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MECHANICAL AND ELECTRICAL TECHNICAL

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2. THI ECT I I I Le Lora lt re re ra A gt gt IT U ONA F J J 100mr EE DETAIL A As A Ej Jot FL 2 6 cos I KI ail E d ch IT 27h FE ST EST m A 0 A AGS LECH EFRIG MACHINE 3 EFRIG MACHINE 3 74 e SR I i EE NDENSE Ly ow ld E 4 WATER FLOW RATE ATER FLOW RATE 141 INLET WATER TEMP 23 9 INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt mr
3. THI ECT I I Leg em em lt re re ra i 2 gt gt IT U ONA F J J 100mr EE DETAIL A sa ZJ NEW Tot FL P 2 6 cos I d Gi Ge E LE d ch P d F J j see A A t AGS LECH EFRIG MACHINE 3 EFRIG MACHINE 3 18 ES sa z TA Son ENSE dees Ly ow ld g LL WATER FLOW RATE ATER FLOW RATE 1141 INLET WATER TEMP 23 9 INLET WATER TEMP FIRST TLET WATER TEMP TLET WATER TEMP LS gt mr lt EVA
4. THI ECT I I I Le Lora lt re re ra A s gt gt IT VT ROOM ONA F J J 100mr EE DETAIL A As A E Jot FU 2 6 cos d IS x E A Lyh ald 470 ST yJ FF A A t AGS TA 15m EFRIS VACHINE 3 EFRIG MACHINE 3 18 e SR I i EE NDENSE Ly ow ld E 4 WATER FLOW RATE ATER FLOW RATE INLET WATER TEMP 23 9 INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt 65mr EVAPORAT EVAPORAT 1 I T lp S ATER FLOW RAE 5 ATER FLOW RATE m pa FOR WALIE mm CHW F me INLET WATER TEMP INLET WATER TEMP Se ERIE lt WL TLET WATER TEMP TLET WATER TEMP s CTT 4 I LING CAPACITY 400 TON LING CAPACITY 900 T ERAUS UNIT z RANNA AT VEZZANINE LEVEL Lb y 4 100mm CHW F RUA gt A 24H CH
5. THI ECT I I I Le Lora 4 lt re re ra s gt gt IT VT ROOM ONA J F J J 100mr EE DETAIL A 6 acs A Ej ot FL RE DP ES I dE x E A Lyh ald 470 ST yJ FF A A t AGS TA 15m EFRIS VACHINE 3 EFRIG MACHINE 3 18 e SR e i EE NDENSE dlgh xw Jl E 4 WATER FLOW RATE ATER FLOW RATE INLET WATER TEMP 23 9 INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt mr EVAPORAT EVAPORAT I I SS Lu lt ATER FLOW RATE 5 ATER FLOW RATE I lei ST FOR MALIE mm CHW F INLET WATER TEVP INLET WATER TEMP Se ERIE lt WL TLET WATER TEMP TLET WATER TEMP s CTT 4 I LING CAPACITY 400 TON LING CAPACITY 900 T Ie HANOLN UNIT z RANNA AT VEZZANINE LEVEL Lb mm CHW E a gt A 2AHR CHUL 40MM LATE lt FRAVE H HEAT EFRIO MACHIN
6. THI ECT I Leg em em lt Le re ra A ES gt gt IT U EE I d 100m EE DETAIL A sa Tal VEW Tot FL P4 pe Al het E d ch T 27h d F J I F A A t A n EFRIG VACHINE 3 EFRIG MACHINE 3 18 CR 0 SR Y Dep PSE DENSE A Ly ow ld g LL WATER FLOW RATE ATER FLOW RATE INLET WATER TEMP 23 9 INLET WATER TEMP FIRST TLET WATER TEMP TLET WATER TEMP 65m E a e EVAPORAT EVAPORAT I i T lp S ATER FLOW RAE 5 ATER FLOW RATE lei ST FOR MALIE mm CHW F imal INLET WATE TEVP INLET WATER TEMP Se ERIE lt WL TLET WATER TEMP TLET WATER TEMP s FJ 4 I LING CAPACITY 400 TON LING CAPACITY 9 ERAUS UNIT z RANNA AT VEZZANINE LEVEL Lb y 4 00mm CHW E RUA gt A 24H H W F I 40MM LATE M FRA d e 7 wer EFRIC MACHINE H AUTOFLOW ay ay SY WE WATE un ENSER WATE E R m 1l gt l A ENSE
7. THI lt gt gt Fr 7 ST ld Ll A EFRIG MACHINE ii DENGE zl eee Mies ATER FLOW RATE INLET WATER TEM FIRST TLET WATER TEN mr lt EVA AT i ATER FL ATE ra gt INLET WATER TE TLET WATER TEM LI APACITY 9 EZZANINE gt 00mm CH LATE FRAVE mud EFRIG MACHINE 3 ENSE Y L rie YA gd EVAPORAT l EF MACHINE 5 8 X ENSE Leg LATE EVAPORAT YS FRAME SYSTE SYSTEM b ER WCHNE I ISOLATION ISOLATION 5 EE pet gt EVAPORAT I I 5 gg S HILLE AGE TOTAL ST LT
8. THI ECT I I I Le Lora lt re re ra i 2 gt gt IT U ONA J F J J 100mr EE DETAIL A A o A Sate tt AIR HANDLI E d ch IT 27h FE ST SI NES A A t ACS TA 15r EFRIG MACHINE 3 EFRIG MACHINE 3 i ais I ENSE NDENSE zl Jl E 4 WATER FLOW RATE ATER FLOW RATE 141 INLET WATER TEMP INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt m E EVAPORAT EVAPORAT r 1 B ni ATER FLOW RAE 5 ATER FLOW RATE VA n l je WP Pp ja ja FOR VALVE NE INLET WATES TE INLET WATER TE SEE ERIE U 4 WD TLET WATER TEMP TLET WATER TEMP LT FT f LING CAPACITY 400 TON LING CAPACITY 900 T Ie HANOLN UNIT z SN AT VEZZANINE LEVEL Lb y 4 ien CHW F RUA gt A 2AHR CHUL W p LATES amp de a pI OPTION 2 MER 28 HEAT rot MACHINE 3 AUTOFLOW y HILLED WATE EXCHANGE ENSER WATE i RER gt M K ENSE M A I m mr VARY Fi H H H U rh ES ES EJ T ch ES A WST n M L OF E Sg 5 EVAPORAT y T H i TR M Gi rz ARCHIVES AH d T EFRIDG VACHINE w Ia id A z 7 T d EN 5 ES L rt ES ES x i I H zm SS H ENSE LI gt gt His ITA E gt ah l H A PLATE Y EVAPORAT ETEIL A AINTENANCE BPA i ive I z EFRIG MACHINE 3 A
9. PIPEWORK FREEZING NEW VALVES CLOSED VALVES NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK THI lt I I I Le em em se lt re re ra FOR VALVE ep gd d ARPANCEVENT TT r EE JETAIL A E o t d Ly ST A A EFRIG MACHINE m m NDENSE dl ATER FLOW RATE INLET WATER TEM FIRST TLET WATER TE m gt EVAPORAT I I i ATER FLOW RATE m pa FOR WALIE mm CHW F INLET WATER TE Se ERIE lt TLET WATER TEM d 3 ETER TE LI ITY ARONA lt EE AT VEZZANINE LEVEL Lb y 4 00min CHW E gt A 24
10. WEEKEI KS REMOVAL AND REPLACEMENT OF THE CHILLE AND ASSOCIATED VALVE mum PIPEWORK FREEZING C NEW VALVES Fa CLOSED VALVES gt 4 NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK THI lt ET I I I Le Lora lt re re ra A s gt gt IT VT ROOM ONA J F J J 100mr EE DETAIL A A o A Adel tt SE AIR HANDLI E d ch T PJ FE ST EST m A A t ACS TA
11. NEWLY INSTALLED PIPEWORK THI ECT I I I Le Lora lt re re ra A gt IT U FOR KELE y g F J J 100mr EE DETAIL A A o tt i Lh ls ape ST yJ m A t AGS TA 15mt EFIC VACHINE i EFRIG MACHINE 3 14 cis WW i l ENSE NDENSE lsd ow ato EH WATER FLOW RATE ATER FLOW RATE 141 INLET WATER TEMP 233 INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt m E EVAPORAT EVAPORAT I I i SS Lu lt
12. Meanwhile we trust the quotation is in accordance with your requirements and assure you of our continued attention to your further instructions Yours faithfully David Wilson Senior Sales Engineer Building Efficiency Johnson Controls Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com Johnson WK Controls Our Ref RETRO 6808 DW 11249 Op2 9 January 2012 The European Bank for Construction amp Development 1 Exchange Square London EC2A 2JN For the attention of Mr G Card Dear Graeme Re European Bank Temporary Air Cooled Chiller Supply Further to your recent request for information would you please accept our proposal to design manufacture supply and Commission the following York manufactured Air Cooled Liquid Chiller New Equipment 1 x York manufactured YLAA HE 0260 266kW R410A Air Cooled Liquid Chiller Inclusive of R410A Refrigerant Charge Single Point Non Fused Disconnect Switch Low Ambient Kit Bacnet Communication Micro Channel Condenser Coil PED CE Standard Single Speed Condenser Fans Additional Options amp Accessories Soft Start Power Factor Correction Pressure Relief Dual Kit Flow Switch Full Unit Enclosure Wire Compressor Acoustic Enclosure Spring Anti Vibration Mounts Commissioning Technical Data A full description of the chiller equipment offered can be found on www jo
13. Once the preparatory works are completed the Contractor is to undertake the following Buffer vessel The two existing buffer vessels are installed on the primary side of the 3 port secondary mixing valve and are each sized at 5000 litres These provide additional backup to the supply of chilled water in the event of the smallest chiller or pump failing The current arrangement on the flow and return to the buffer vessels is incorrect as the flow from the buffer vessels is on the top and therefore the flow is at a higher temperature than the flow to the buffer vessels To take advantage of the lower water temperatures at low level in the buffer vessels it is proposed to reverse the fluid flow through the buffer vessels resulting in the infill being at the top These works would involve the existing buffer vessel connections on the secondary flow pipework to be cut off so the connections can be reversed Existing Low loss Header e Cut the existing chilled water flow and return connections for the buffer vessels from the secondary chilled water flow pipework after the low loss header and install new isolating valves alongside new blank flanges to enable new connections to the low loss header e The existing low loss header blind flanges on either end are to be removed and replaced with flanged eccentric reducers and fully lugged butterfly isolating valves on either side the pipework is to be completed with blind flanges Before the reducer an ai
14. e Test the functionality of the temporary chiller and ensure that the secondary system runs without any complications prior to commencement of any works e Ensure that the Bank s representatives have prepared and tested all additional methods of cooling for the nonessential cooling loads for the remaining secondary cooling loads Once the works are completed the system is to be topped up purged of all air and the relevant section is to be pressure tested If no problems are observed the Contractor shall restart the system and test its operation 500 010 WORKS ON CONDENSER WATER SIDE A subsequent weekend shut down would be required to accommodate the modification works on the condenser water circuit The modifications would enable complete isolation of the condenser water circuit and disconnection of the heat exchangers Once the temporary chiller is running the Contractor is to drain the condenser water side of the system The drainage of the system needs to be closely controlled and it is necessary to take into consideration that it can take up to 5 Hrs The weekend shutdown works cannot extend outside the previously stated period for weekend shutdown The existing isolation valve on the condenser water flow shall be replaced with a new butterfly valve including a new air purger On the condenser water return pipework the Contractor is to remove the existing motorised valve and install a new butterfly isolation valve Upon completion
15. secondary using the existing primary isolating valves before the low loss header The isolating valves on the temporary chiller connection would be opened and the main circuit valve closed The Contractor then would energise the temporary chiller Once the temporary system is running both the primary chilled and condenser water circuits would be isolated using the new isolation valves and drained down in the whole plant room The pumps that serve chiller No 3 3 are chilled water P3 16 and condenser water P3 17 pumps The pumps are to be disconnected back to the main headers and new isolating valves and double regulating valve incl commissioning set would be installed The chilled and condenser water connections to the chiller No 3 3 would be disconnected back to the chilled water and condenser water headers and new isolation valve and double regulating valves incl commissioning station would be installed on the connections Once all of the above works are completed the Contractor is to ensure that the newly installed valves are in a closed position The system consisting of remaining two chillers is to be topped up purged of all air and the relevant section of the system is to be pressure tested Upon completion of the testing the system is to be energised and the Contractor is to test its operation to ensure that the system is operational If no problems are observed the works can be completed by opening the primary and secondary circuit whilst
16. representatives have prepared and tested all additional methods of cooling for the nonessential cooling loads for the remaining secondary cooling loads The primary circuit shall be isolated from the secondary using the existing isolating valves on the primary chilled water flow and return before the low loss header The isolating valves on the temporary chiller connection would be opened and the main circuit valve on the buffer vessel chilled water flow will be closed This action will divert water through the temporary chiller To enable the isolating valve replacement without draining down of the whole system the Contractor is to appoint a specialist company to undertake a pipework freezing of the primary chilled water flow and return pipes at plantroom level 400 010 PIPEWORK FREEZING The pipework shall be frozen in the chilled water plant room in the location identified on the tender drawings using liquid nitrogen To freeze the 400mm diameter mains chilled water pipework flow and return would take 4 6 hours Upon this the system shall be drained down to a sufficient level to relieve excessive pressure and undertake subsequent installation of the new lugged butterfly isolating valves and an air purger on the chilled water flow When the installation is completed the pipework shall be slowly thawed with the help of a local heat source which would melt a channel in the frozen plug Once the water has then passed through the plug induced
17. Appertaining to this Specification the following works shall have the meanings assigned to them unless there is something in the subject matter or context consistent with such construction Project Team shall mean the Bank Project Manager Consulting Engineer CDM Coordinator Planning Supervisor Consulting Engineers Consulting Engineer Engineer shall mean the Building Services Consultant Bank s representatives shall mean Bank Project Manager Consulting Engineer CDM Coordinator Planning Supervisor Consulting Engineers Contractor shall mean the Principle Contractor appointed for the works and shall include the legal personal representative and successor By other means a Specialist Contractor appointed by the Contractor or Bank to carry out a specific item of work Tender shall mean the Engineer s Tender Form on which the Contractor shall have shown the Contract Price Equipment shall mean fixed machinery provided under the contract Plant shall mean portable tools instruments and machinery to be used in carrying out the works Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx Checked SGJ June 2012 FHPP Provision Works shall mean and include all equipment to be provided and work to be done under the contract and shall include supplying fixing testing regulation and commissioning of the installations described in the Spec
18. ES ES x A p eg mr VARY Fi ei t T ES ES WI Va I a SE oF UR 878 T T 8 RAPORT r l k RM Wwa ARCHIVES AH e j Y E734 EFRDG WACHINE 3 2 E T 1 EJ L 5 amp L D P ER H lt i I H zk m H A A ENSE 11 P gt TE i i o wily S aj L l Y Y PLATE i Y EVAPORAT ETAIL 4 AINTENANCE BYPA E z a e I I L 2 EFAG VACHNE So ALVE DETAIL SERVI M ES ES Seite I I Arte SS H LT ROOM UNIT aT 2 L a ENSIBLE COOLE Ta Iw WE D T T 7 sry AD iced I I M ST a k EVAPORAT tt H L H Le A ad T EE EMT BE THE HEAT EXCHANGERS CAN B Em 5 REMOVED AT THIS POINT DURING 4 s gt 1 KI HH NORMAL WORKING HOURS R Tl 1 m E Bun E Horde r4 j f T HILLED WATER STORAGE TOTAL STORAGE LT mam PIPEWORK FREEZING C NEW VALVES Fa CLOSED VALVES Fa NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK T
19. Fa CLOSED VALVES P 4 NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK THI lt ET I I I Le Lora lt re re ra A s gt IT VT ROOM ONA J F J J 100mr EE DETAIL A A o A Z Zell tt SE AIR HANDLI E d ch T 27h FE ST EST m A 0 A AGS LECH EFRIG MACHINE 3 EFRIG MACHINE 3 74 e SR l EE NDENSE Ly ow ld Ej WATER FLOW RATE ATER FLOW RATE 141 INLET
20. One large chiller operational Stage 3 Two large chillers operational Stage 4 All chillers operational When changing from one stage to another sequence may appear different until a chiller has fully shut down A simplified description of change in sequence is as follows Unloading A chiller stage is unloaded when the common chilled water flow temperature is less than 7 5 C and the difference between the common flow and return temperature sensors delta T is less than the parameter set usually set to 3 C If these parameters remain for the duration of the chosen time set usually set to 30 minutes the chiller stage will change to a lower number Loading To increase a chiller stage the common chilled water flow temperature must be above 7 5 C and remain above this value for the duration of the chosen time set once this time has elapsed the chiller stage will change up to a higher number Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 69 FHPP Manual Adjustment A manual adjustment of the chiller staging is possible if necessary by adjusting the timer on the settings so the time set is reduced from 30 minutes to 3 minutes It is necessary to always ensure that the timer value is reset to 30 minutes immediately following the chiller stage change taking place failure to act swiftly may lead to further stage changes taking place unexpectedly The delta T can be c
21. Perforations shall be admiralty pattern for light or medium duty GDCD pattern standard 23 or manufacturer s standard pattern The contractor shall use factory made fittings throughout of same material type pattern finish and thickness as cable tray Join lengths of tray and fittings using manufacturer s standard shouldered ends fish plates or couplers with galvanized or zinc plated slotted domed head roofing bolts nuts washers and shakeproof washers The Material shall be hot rolled steel galvanized after manufacture to BS EN 10327 or BS EN 10143 Trays and rack are to be supported from building fabric with minimum clearance behind of 20mm Install fixings at regular intervals to prevent visible sagging when loaded with maximum spacing 1 2m and 230mm from fittings Keep cutting of cable tray to a minimum Cut along a line of unperforated metal Make good finish with zinc rich paint primer and top coat or two pack epoxy paste as appropriate to tray material and finish Fit holes cut in tray for passage of cables with grommets bushes or other lining Install all bolts fixings and hangers with threaded portion away from cables Cable routes to cross at right angles or spacing to BS EN 50374 Cable cleats shall be one piece or single way pattern or claw pattern or two bolt pattern Manufactured from Die cast aluminium alloy moulded black polyethylene or nylon 300 140 MODIFICATIONS TO BMS The proposed works to the BMS
22. as specified elsewhere Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 49 Checked SGJ June 2012 FHPP The Contractor is to state on the Summary of Tender the name of the firm or firms to whom the insulation work wilt be sub contracted The firm selected must be of good repute and a member of the Thermal Insulation Contractors Association All services are to be insulated in the following manner a Chilled Water Pipework generally To be insulated with rigid preformed sections of Kingspan Kooltherm Phenolic Foam or Knauf Crown Glassfibre or Rockwool Rockfibre each having a factory applied reinforced aluminium foil facing material or equal and approved Finish to be Class O as specified by the Building Regulations Approved Document B Sections are to be close butted and all longitudinal and circumferential joints are to have an overlap of facing material of not less than 50 mm Overlaps and butt joints to be well sealed with an adhesive or self adhesive foil tape approved by the insulation manufacturer and conforming to the Class 0 requirements Sections are to be taped into mitred lengths to run in uniform thickness around all bends sets and tees Vapour barriers are to be maintained thorough b External Chilled Water Pipework External pipework and fittings are to be insulated as for chilled water pipework generally but with the following further r
23. of works have been agreed and is expected to be undertaken by Johnson Controls YORK during the replacement programme Temporary Chiller e Supply packaged liquid chiller complete with motor compressor condenser evaporator starting and control equipment and all auxiliary and ancillary items to complete the refrigeration cycle e The unit is to be factory assembled with all interconnecting refrigerant piping and wiring ready for field installation e The unit is to be pressure tested evacuated and fully factory charged with refrigerant and oil in each of the independent refrigerant circuits e The unit shall be delivered to site and installed in the compound indicated on the external services drawing on a cork or similar TICO pad to protect the existing tiled support base areas Existing Chillers e Decommissioning of the existing units one unit at a time before the installation of new chiller in line with the programme above e Removal and safe storage of the refrigerant R123 on site until the final removal of the third chiller e Dismantling of the existing machines and the safe removal from site e Disposal of the existing machines in line with the requirements of current regulations Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 32 Date Checked SGJ June 2012 FHPP e Safe disposal of the refrigerant in line with the BS EN 378 4 2008 o
24. official order Terms and Conditions of Sale EBRD Terms and Conditions apply with Amendments as requested Warranty Please note that the standard warranty period ends 12 months after dispatch from the factory Yours faithfully David Wilson Senior Sales Engineer Building Efficiency Johnson Controls Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com FHPP APPENDIX G Working Area and Contractor s Facilities to be attached to the final pdf document Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 13 APPENDIX G Facilities o T 7 z Working Area and Contractor s actor s Working Area king in this area is subject to king permit EE i tractor s Facilities ing in this areas is to subject vent Schedule TEMPORAR CHILLER CHILLER ROOM CHILLER ROOM COMPOUND 1570 Wu FRAME 1670 STORAGE ROOM A 1520 D 1520
25. temperatures and pressures To be as manufactured by Powerflex Ltd their Elaflex range or equal and approved 200 030 THERMAL INSULATION The Contractor is to include the provision and fitting of thermal insulation of the type grade and thickness all as specified later but generally to e All new chilled and condenser water pipework except gdrains and overflows within plantroom on the ground floor and externally in the temporary chiller location e The areas where modifications and replacement of the pipework and valves was undertaken Insulation is to be installed in a neat manner and particular attention to neatness is required in the plantroom and other areas where it is exposed to view The method of installation of each type of insulation is to be strictly in accordance with the manufacturer s recommendations All insulation is to be in accordance with B S 5422 2001 and the appropriate thickness tables therein The thermal conductivities of the insulating materials and tables to be used are as listed below All insulation shall be zero ODP and a maximum GWP of 5 such as phenolic foam as manufactured by Kingspan Kooltherm installed fully in accordance with their requirements and recommendations A complete vapour seal shall be made to all insulated ductwork even at support points by the use of spacer Kooltherm or wooden blocks at pipe clips and brackets Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp
26. while eliminating as far as practicable all air Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 36 Date Checked SGJ June 2012 FHPP Upon completion of these works the Contractor is to allow for testing and commissioning of the whole of the system under the dictates of new control schedules The detailed description of the proposed commissioning is to be found under Section 8 00 200 050 COMPLETION WORKS Upon the complete chiller replacement the Contractor is to allow for complete drain down and disconnection of the temporary chiller The temporary chilled water pipework and temporary chiller controls are to be retained in the generator room and the temporary chiller and the external pipework incl associated accessories are to be stored in the Bank s preferred location The Contractor is to allow for the temporary chiller compound and the existing louvre is to be cleared and returned to its original status PART 3 GENERAL REQUIREMENTS 300 010 CHILLERS The chillers have been procured by EBRD however the contractor shall be responsible for close liaison with the chillers manufacturer to ensure that all works are undertaken in a manner and as scheduled by the Bank s requirement Temporary Chiller The temporary chiller is to be 250 kW air cooled liquid chiller YLAA HE 0260 as manufactured by Johnson Controls YORK A detailed technical specification f
27. 16 FHPP 2 40 2 41 Checked SGJ June 2012 All spares shall be fully labelled and located in an agreed position All tools and keys shall be fully labelled and held on tool racks and within a key cabinet in a position to be agreed A signature shall be obtained from the Client at handover Together with the above spares the Contractor shall provide a detailed schedule of recommended spares together with their part number for All installations This shall be presented to the client prior to handover for him to review the necessity if any of purchasing further spares Making Good Defects The Contractor will be provided by the Bank s representative upon Practical Completion a list of incomplete and unacceptable works The Contractor will immediately be provided with written notice by the Bank s representative to remedy the incomplete or unacceptable works within one month The Contractor is to produce a written schedule of those items on the Bank representative s list of incomplete an unacceptable works that he is unable to remedy within the period of notice together with a fully detailed programme of when such works can be completed The incomplete and unacceptable works will be valued by the Bank s representatives The Bank s representatives will recommend to the Bank that this sum will be a minimum to be withheld from the Contractors Final Account pending remedy of the incomplete and unacceptable works Shoul
28. 95 C running singly or in pairs vertically or horizontally where exposed to view are to be supported by screw on type brackets all Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 55 FHPP made by Bryson Brackets Ltd or other equal and approved Where concealed and in plantrooms Unistrut or approved equal may be used All supports rods to clips are to have appropriate anti vibration spring or rubber noise suppression units fitted Build in brackets are to be of the long shank type while screw on type brackets are to have a minimum of two fixing screws In either case the half hoop to pass round the pipe is to be secured by a single screw Brackets are to be of malleable iron for mild steel pipes galvanized for galvanized pipes and chromium plated for chromium plated pipes Brackets for copper pipes are to be of cast and not stamped brass Steel pipes larger than 80 mm nominal bore and copper pipes larger than 76 mm o d and all multiple runs of pipe are to be supported on angle iron or equal bearers All vertical pipes in vertical ducts are to be supported on specially fabricated mild steel brackets supported from the back wall of the ducts The detail of the brackets proposed to be forwarded to the Consulting Engineers for comment approval All copper pipes supported by this type of bracket to be protected from contact with ferrous metal by asbestos free ring tape 25 mm w
29. ATER FLOW RATE 5 ATER FLOW RATE VA m pa FOR WALIE mm CHW F me INLET WATER TEMP INLET WATER TEMP Se ERIE lt WL TLET WATER TEMP TLET WATER TEMP LI 5 l LING CAPACITY 400 TON LI APACITY 900 Ti lt EZ2ANINE aah d Y A 00mm CHN F Y m ra z I IHR CHF e IV een LATE gt do lt T I FRAVE HEAT EFRIG MACHINE AUTOFLOW y g HILLED WATE anne ENSER WATE R m 1l Ty a ei PS 3 4 DENSE Hr Otr n 1 iamm PRIMARY F i vs B Wa Li vey y pea m GA Petal es Le pea ROME UL NND SS A 3c k E 7 i a a Ka ARCHIVES 4H S p 6 j P3 4 pe U Li lt Y e cs b f M STR NRV i vosR P nev CS j E mom zi GH ET 2 A 3 i I Wavre kan A A CONDENSER w u d Wdy d hace a TA e gt va 3 2 PLATE l _ Y p4 EVAPORATOR il d er M d ETAIL A AINTENANCE BYPA 1 1 PES ive p gt EFRIC MACHINE 3 N gt n F D s REY H papa MESI ve De R ee PESPAAAA ENSIBLE COOLE T SGL Gg u m e E gt 7 3 7 I I crc EDA ST EVAPORAT i MS fe ze y H ZH NTROL ROOM AH m m d REESE Hoo X5 SUE Tap I 9 3 I i gt gt d F z ech IH U I rd 40MM CHW Fi Hd nt d gt f T HILLED WATER STORAGE TOTAL STORAGE LT AIN WORKS REPLACEMENT OF CHILLER 3 VEEKE HUTDOWN DI NNECTION OF EXISTI Al HILLE rimal t hutdowi ndal tem runni ia t mam PIPEWORK FREEZING d NEW VALVES Iv
30. CH Main Works 135 days Thu 22 11 12 Wed 29 05 13 y ba EMEN EM Installation of Chiller One 25days Thu 22 11 12 Wed 26 12 12 17 22 Proving period 30 days Thu 27 12 12 Wed 06 02 13 21 23 Installation of chiller Two 25days Thu 07 02 13 Wed 13 03 13 22 i 24 Proving Period 30 days Thu 14 03 13 Wed 24 04 13 23 25 Installation of Chiller Three 25days Thu 25 04 13 Wed 29 05 13 24 teobi4 EBRD implementaion Programme I SSES sou FHPP APPENDIX D Schedule of Valves VALVE SCHEDULE Existing valves LABEL REF EXISTING NO SIZE TYPE NEW TYPE DESCRIPTION ACTION MANUFACTURER C W S to Flat Plate Heat Exchanger C W S G 33 250 M V HX3 1 C W S from Flat Plate Heat C W S G 34 250 D R V Exchanger HX3 1 To be removed C W S to Flat Plate Heat Exchanger C W S G 35 250 M V HX3 2 Hattersley C W S from Flat Plate Heat C W S G 36 250 D R V Exchanger HX3 2 970G Butterfly valve gear operated C W S G 37 400 LV IV ALI BRZ disc C W S Toberepiaced 970G Butterfly valve gear operated C W R G 38 400 LV IV ALI BRZ disc C W R C W S G 39 400 M V C W S Bypass To be retained C W S to Refrigeration Machine C W S G 40 250 M V MV HiLok Fully Lugged c w IP2 RM3 1 Keystone M2000PN16 S S 4983 DI B FLY C W S from Refrigeration Machine C W S G 41 250 D R V DRV MS DRV G OP PN25 RM3 1 To be replaced Hattersley C W S to Refrigeration Machine C W S G 42 250 M V M
31. Chilled Water System PART 1 SYSTEM OBJECTIVES 100 010 PERFORMANCE OBJECTIVES The Contractor shall supply install test and set to work a fully functional chilled water system The installation will involve replacement of the existing chilled and condenser water pumps replacement of existing isolating double regulating and motorised valves and modifications to the existing pipework 100 020 EXISTING SYSTEM The building is currently served by 3 No chillers with chillers 3 1 and 3 2 rated at 3165 kW and chiller 3 3 rated at 1400 kW and these were installed around 1989 They each have a capacity control system using inlet guide vanes which partially block the inlet to the compressor and thereby reduce the refrigerant flow and ultimately the output The chillers are therefore capable of some capacity control although overall COP Coefficient of Performance suffers as they throttle down The above chillers therefore provide a theoretical output of around 7730 kW but this has been reduced by the use of the refrigerant R123 which replaced R11 the original refrigerant when this was no longer available Information from the manufacturer would indicate that after the refrigerant replacement the overall output of the chillers dropped to around 7350kW The existing chilled water pumps are not all the same size with 3 No P3 1 P3 2 P3 3 each the same and sized for the flow rate from the larger chillers 3 1 amp 3 2 with the last pump P3 16 sized
32. E Technical Specification docx 48 Checked SGJ June 2012 FHPP A Class O foil finish shall be applied throughout with matching 100mm wide self adhesive Class O tape a Internal Pipework Use Table 8 for contents at 5 C and a thermal conductivity of 0 040 W m K for Mineral Wool and 0 020 W m K for Phenolic Foam g External Pipework Use Table 23 and a thermal conductivity of 0 035 W m K for Mineral Wool and 0 020 W m K for Phenolic Foam O Trace Heating Where pipework has trace heating tape along its length due allowance is to be made for pipe insulation size to accommodate same The thickness of insulation should also be as recommended by the trace heating tape manufacturer if thicker than B S 5422 2001 This applies to HWS pipework for maintaining the hot temperature or any other pipework for freeze protection All flanges and valves on insulated pipework of 65 mm nominal bore and larger are to be fully insulated Valves flanges and all other fittings on chilled and cold water pipework are to be fully insulated and vapour sealed All flanges valves and other fittings which are to be insulated on any pipework are to be enclosed additionally in removable buckle fixed 0 6 mm Stucco Aluzink Dobelshield enclosures All services in the plantroom external or which are less than 2 5 metres above floor level to their underside are to be fully insulated and finished with 0 6 mm Stucco Aluzink Dobelsh
33. Engineer deem the amount to be inadequate for the purpose it shall be in the Consulting Engineer s power to recommend that a common amount be employed for the purposes of comparison of Tenders and that the Contractor shall become liable for such sum as if such sum had been originally included subject to the Tenderer having been given the option to confirm or withdraw his Tender In the event of the Contractor failing to comply with this Clause in the stipulated time for production etc the Consulting Engineer shall have the power to recommend that the Contract Works as being unacceptable to hand over to the Bank due to insufficient information available to enable the Bankto operate and maintain the plant in accordance with the Health and Safety at Work Act and furthermore shall have the power to instruct such Work to be carried out by others and deduct the resultant costs from the Contractor s Final Account On final acceptance of the manuals electronic copies of the manuals shall be provided on Compact Diskette s 2 39 Spares and Tools At the completion of the project the Contractor shall provide the following spares and tools as a minimum e Lockshield valve doc key e Replacement fuses for all control systems e 1 no replacement of each type of sensor e All keys and lock releases as necessary for each and every installation Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx
34. IT rooms during the chiller replacement a temporary chiller is to be installed during the enabling stage of the works The new chillers shall be installed one at a time to minimise the risk This will enable the new plant to be installed in a manner so it works along side the existing equipment during a period of time The new plant has been sized to match the capacity of the existing chillers although the building heating loads were calculated to be 30 lower The new equipment will be connected to the existing BMS system modified in accordance with revised hydraulic design Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx Checked SGJ June 2012 FHPP Further works will also include for the refurbishment of the existing Motor Control Centers MCCA amp MCCB as described in a later section of this specification During the proposed works the existing heat exchangers are planned to be removed from site and the existing buffer vessels require modifications All the above works are described in detail within the later sections of this specification along with the Mechanical and Electrical tender drawings Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx FHPP Checked SGJ June 2012 SECTION 2 00 General Requirements 2 01 Regulations and Standards DI Design Criteria Maximum External Temp Summer 30 C Min
35. Technical Specification docx Checked SGJ June 2012 FHPP The above list is provided as a guide to applicable regulations and standards only and shall not be deemed as an exhaustive list 03 Engineering Guidance Principles for Design e The engineering services shall be capable of satisfying the following needs e To provide and maintain the environmental conditions within the building e To provide the facilities for departments and services to function e Tocomply with all Statutory Requirements National and Regional guidance e To be planned for economy in design and operation with adequate safe access ease of maintenance and full use to be made of standardisation e Consideration should be given to the availability of service spares when selecting items of plant and equipment e To provide standby services where specifically stated e The essence of the construction of the installation shall be simplicity reliability and ease of maintenance with particular attention being paid to the internal and external access to facilitate inspection maintenance and cleaning e All equipment shall be installed in accordance with the Requirements of this Specification 2 02 Contract Conditions For details of Contract Conditions refer to the Main Contractors Terms and Conditions The Contractor shall ensure that the system and design method complies with the Construction Design and Management Regulations 1994 2 03 Definitions
36. are vertical buffer vessels provided by Rother Engineering These provide additional backup to the supply of chilled water in the event of the smallest chiller or pump failing As discussed previously the buffer vessels are quite important for both the temporary chiller works and for the new chillers The current capacity of the vessels provides enough storage to cover the anticipated 250 kW essential IT load for 17 minutes which should limit the chiller to a maximum of 3 starts per hour to cover the essential IT loads As it has been described previously the current arrangement on the flow and return to the buffer vessels is to be modified and reverse the flow and return from the buffer vessels having the infill at the top The temporary chiller circulating pump is to be also used as a buffer vessel circulating pump once the whole system is commissioned 300 060 HEAT EXCHANGERS The existing 2 No Alfa Laval plate amp Frame heat exchangers are located in the chiller plantroom As they are not used in the current system arrangement and are not planned to be utilised for the new system they are redundant and are to be dismantled and remove from site The heat exchanger are proposed to be disconnected during the enabling stage of the work and it will be beneficial to remove the redundant system before the installation of new chiller so there is more working space in the chiller plantroom 300 070 REFRIGERANT LEAK DETECTION Y 00 Enquires E4
37. be provided with a T P amp N contactor controlled power supply from the control panel The motor speed is to be monitored by the B M S When at ON the motor is to run at a speed which is to be manually adjustable at the VFD s keypad The VFDs are to be as manufactured by Danfoss Ltd and are to be provided by the Controls Sub Contractor They are to be suitable for either panel or field mounting as specified later Sequenced Starting Where the instantaneous starting currents of all motors etc connected to a control panel would exceed the capacity of the fuses provided on the electrical supply to the control panels delay timers are to be provided to reduce the maximum instantaneous current as necessary when started under automatic control or by the Fireman s switches Sequential starting is to be provided also to ensure that the plant starts in an orderly and safe manner and the correct conditions are met before starting plant Thermal Controls Unless otherwise later specified in any particular instance every control circuit which automatically controls temperature humidity etc in any air or water system other than 2 position control loops is to incorporate a proportional plus integral plus differential modulating controller mounted in the control panel of the plantroom concerned Setpoints are all to be fully adjustable Proportional band integral action rate and differential rate are to be adjusted to optimum
38. by the system pumps the remaining ice will be flushed away rapidly The estimated time for the de frosting is 1 2 hour Once the works are completed the chilled water system shall be topped up purged of all air from the system and the working section of the pipework is to be pressure tested On completion of these works the Contractor shall restart the system and test its operation It is necessary for the Contractor Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 27 Checked SGJ June 2012 FHPP to produce a method statement for the proposed works during this shutdown period as set out in the General Conditions of this specification The pipework freezing shall be undertaken by IPS Industrial Pipefreezing Services Ltd 8 The Coles Shop Merton Abbey Mills Watermill Way London SW19 2RD Web www ipsgroup net Steve Turner Phone 07768 616 020 Fax 020 8543 8748 Mail steveQipsgroup net PART 5 SUBSEQUENT WEEKEND SHUTDOWN OF PRIMARY SYSTEM Each scope of the works described below is to be undertaken during an individual weekend shut down As all works require complete isolation of the primary system and it is crucial to cover the essential cooling loads at all times the following operations shall repeat before commencing of any works e Produce a method statement on the proposed works during the shutdown as set out in the General Conditions of this specification
39. distribution system and is backed up by the generator in the event of a power failure 300 120 LIGHTING INSTALLATION The existing lighting to the chiller room in the vicinity of the chillers shall be modified were necessary Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 42 Date Checked SGJ June 2012 FHPP The electrical contractor shall temporarily relocate the existing light fittings in the area of the chillers where removal replacement of chillers is taking place to allow unrestricted access egress of the each chiller Once each chiller has been replaced the contractor shall install new Cooper Industries Tufflite IP65 fittings as per the electrical drawing for this area The fittings are to be High frequency T5 type luminaires and suspended to a height equivalent to the existing fittings The positions indicated on the drawing are indicative and the exact position shall be agreed on site 300 130 CONTAINMENT The contractor shall make use of the existing containment system The contractor shall make the necessary site survey of the existing services route for tendering purposes and to establish the works required Any additional containment should be supported and installed to match the existing containment system The new containment should be routed as not to conflict with the existing and proposed services Tray and rack shall be Flanged or return flanged
40. drop affecting the main starter operation It is the Control Sub Contractor s responsibility to determine and supply this relay if it is required Where a manual switch with Duty Sharing is specified the lead motor of a pair of duty standby motors is to be alternated automatically each time the plant is run when the switch is at Duty Sharing If the motor is required to run continuously then the Duty Standby motor is to be alternated automatically every 7 days at a time suitable to the operation of the plant Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 65 FHPP Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx Where variable speed control of motors is required they are to be provided with Variable Frequency Drives VFD as follows Each motor is to be controlled by a dedicated VFD which is also to provide motor protection for overcurrent and loss of phase along with the normal facilities provided by the manufacturer as standard The VFD is to have the facility to control the motor speed in response to a 0 to 10V signal from the B M S Run and Trip lamps are to be provided on the panel fascia and the operating status is to be monitored by the B M S An ON OFF AUTO selector switch is be provided for each motor on the control panel fascia When at AUTO the motor is to be started and stopped by the B M S Each VFD is to
41. e 005 Craneage material handling Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx App 2 FHPP 006 Removal of redundant plant and equipment e 007 Testing commissioning and proving e Main Works Electrical 001 Main HV LV Panel Works e 002 MCC Panel Modifications 003 Pump Isolators Replacement e 004 Small Chiller Cable Installation e 005 Containment 006 Lighting 007 Labour extra over for of hours working e 008 Testing and Commissioning e Sub Total Main Contract Preliminaries Main Contractor OH amp P Contingency 100 000 00 GRAND TOTAL Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 3 FHPP SUMMARY OF TENDER For the Mechanical Services Continued To be completed by Tenderer The Contractor shall indicate below the percentages additions required for variations on a daywork basis and quotations based on time material Quotations Dayworks a tite Cute Ota REN cate E Labour ani EEEE ELE erect PE ROL Labour SE Material he Ak ik ee he E ee E Material RRC Plant T RENTRER 96 Plant SIGNED FOR AND ON BEHALF OF ADDRESS uuuunnsnuznnunnnniBiB INESSE DATE Y 00 Enquires E4340 4 0 FHP SpecificationsM 8 Combined M amp E E4340 MAE Te
42. for all items whether tested at site or at a supplier s works Due allowance shall be made for the time required to assemble the inspecting authority where applicable to witness any and all tests carried out at the discretion of the inspecting body All tests shall be carried out in accordance with the recommendations of this specification and requirements of the professional bodies recognised as offering authorative matter on the subject All costs incurred in complying with the foregoing shall be deemed to have been included by the Contactor Any defect which occurs after the date of Practical Completion of the Works for any section of the works due to non compliance shall be made good by the Contractor at his expense within 28 days or sooner of notification dependent upon the nature of the defect Client Instruction The Contractor shall after satisfactory testing commissioning and putting to work all the installations carry out a detailed Client Instruction procedure The instruction shall include for training up to 3No of the Bank s team The Contractors shall include for every installation and every Specialists to provide representation on an agreed date to instruct the Bank s team in the operation of the system The Contractor shall prepare a detailed programme together with a schedule of proposed items to be covered to the Bank s representative and Consulting Engineer for approval prior to the demonstration commencing They sh
43. for interconnection of the temporary chiller chilled water pipework with the new connections on the buffer vessels connection side Within the generator room the Contractor is to create the builders work openings through the generator wall louvres for the temporary chiller flow and return pipework and the electrical connections The builders works are described in further detail under the Builders work Section 8 00 The chilled water flow and return pipework shall have flanges provided on internal side of the louvre wall to enable easy maintenance and disconnection The connections are to be provided with blanked flanges within the generator plantroom until the temporary chiller is delivered on site Temporary chiller The Contractor is to closely liaise with the temporary chiller manufacturer Johnson Controls YORK on the delivery date of the temporary chiller so its installation is scheduled within the enabling package scope of works Once the temporary chiller is delivered on site and positioned the Contractor is to extend the temporary chiller chilled water flow and return connections and connect the temporary chiller to the system with all associated valves A detailed description of the chiller and its controls can be found in Section 5 00 and 7 00 The pipework is to run externally on a suitably sized galvanised tray supported from the filed external surface on duck foot supports Electrical works The electrical contractor shall be
44. headers tubes and fins are all aluminium Coils can be easily pressure washed 100bar maximum saving time and sustaining efficiency High Efficiency Evaporator All models have high efficiency evaporators to provide high cooling capacities and low water pressure drops Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com Design Data Unit Type and Size Model Number and Type of Compressor Number of refrigerant circuits per Unit Capacity steps per chiller Technical Data Refrigerant Type Cooling Capacity Power Input Compressor EER ESEER Sound Pressure 1m Single Speed Fan Parallel surface method in free field without reflection Evaporator Number and Type Total Fluid Content Fluid Concentration Entering Leaving Fluid Temperature Fluid Flow Rate Pressure Drop Fouling Factor Diameter of Fluid Connections Condenser Air Cooled Air Inlet Temperature Air Flow Rate No of Fans Total Fan Motor Power Altitude Electrical Data Mains Supply Number of Panels Nom Current Unit Max Current Unit for cable sizing Starting Current Compressor 1 2 3 4 Max Instant Current Unit No Type No kW kW dBA No Type L EG CC L s kPa m K kW in CO m3 s kW m V Ph Hz A A A A Single Point Non Fused Disconnect Switch with Power F
45. mg EFRIG WACHINE 3 EFRIG MACHINE 3 18 e SR l EE NDENSE Ly ow ld EH WATER FLOW RATE ATER FLOW RATE 141 INLET WATER TEMP 233 INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt mr lt EVAPORAT EVAPORAT I I M Lu lt ATER FLOW RATE 5 ATER FLOW RATE VA l m pa FOR WALIE mm CHW F me INLET WATER TEMP INLET WATER TEMP EEE lt WL TET WATER TEMP TLET WATER TEMP s TA I I LING CAPACITY 400 TON LING CAPACITY 900 T ERAUS UNIT z RANNA AT VEZZANINE LEVEL Lb y 4 00mm CHN E Y m gt gt I IHR CHF e I LATE gt de lt T po FRAVE D TOM y ufo wash i HAT mem EFRIG MACHINE fg i lt EM gt R a E I IPS v DENSE O0 em T E lt T n 1 I A IA Cl st malu A PUT ga Te i F gt Hot z 4 1 imm PRIMARY F p I 1 7 gt lt Era gt PP I m T gt lt Era Dr AW EWPORAT IA ap mi pR N EET 4 H HIVES 4H p Y ra al i NE EFRIDG MACHINE 5 7 p Y peat gt Dr X T 1 c Eni b y Es EK U b e v og ai 1 4 F ct den LI t gt gt gt HVS vi AE gt A l E AT 1 Y Y Y LATE Y pp ETAIL A AINTENANCE BYPA A et gy PY pz FRAVE I I ALVE DETAIL SERV E ACE i e h A N SONDI IT uT be ee PAZ o m z i L CONDENSER i SE ed m vos P d o d EVAPORATOR ved F FC STRI l Y tt H NTROL ROOM AH b SS gua e SRY Cyn iv zd i e Hoo X5 mE A I z gt H I
46. nennen App 11 APPENDIX E Temporary chiller and Main Chiller technical details App 12 APPENDIX G Working Area and Contractor s Facilities seeee App 13 Checked SGJ June 2012 FHPP SECTION 1 00 Introduction 1 01 Building Description This detailed specification has been prepared by FHPP Ltd to enable interested parties to prepare tender submissions for the chilled water plant replacement works at the Headquarters building for the European Bank for Reconstruction and Development EBRD that is located at One Exchange Square London EC2A 2JN The intention of this Project is to replace 3No existing water cooled chillers with new equally sized water cooled chillers with variable speed drives The works under this contract includes the preparation of the site and the enabling works and also the installation of the new equipment and it s testing and commissioning The temporary chiller and 3 No permanent chillers will be procured by EBRD direct 1 02 Description of existing system The European Bank for Reconstruction and Development EBRD is a 13 storey office building The existing cooling system within the building consists of 3No YORK water cooled chillers installed around 1989 located in the ground floor plant room Condenser water for the chillers is provided from 4No roof mounted open circuit evaporative cooling towers There are existing heat exchangers within the chiller plant room that were install
47. on all drawings and included on engraved Traffolyte labels permanently fitted to the relevant item at the completion of the project by the Controls Sub Contractor The Contractor is to check with the manufacturers of all mechanical plant and equipment that the motor and the electrical equipment sizes stated in this Specification are correct and is to inform the Consulting Engineers in the event of an alteration The Contractor is also to ensure that the details of the controls and wiring of all plant and equipment are made available to the Controls Sub Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 63 FHPP Contractor The Controls Sub Contractor is responsible for ensuring that his control systems are fully compatible with the requirements of all plant and equipment The Contractor is to prepare drawings confirming the exact locations of all items to be wired before electrical installation work is started The new control panels must be delivered to site to suit the Contract programme Panel design and wiring diagrams must proceed in sufficient time to allow any comments necessary to be made and incorporated prior to manufacture of the panel The new control panels to be of sheet steel painted with primer undercoat and topcoat of oil based paint to an approved colour They are to have front access hinged doors for maintenance All lamps gauges manual controls etc are to
48. period 12 hours 12 hours Permitted ice formation 50 50 Pipe size mm Thickness of insulation mm O Diameter Bore Phenolic Foam Mineral Wool Phenolic Foam Mineral Wool Copper Pipes zs 5 76 8 88 7 ers 2 22 0 20 2 10 15 23 25 21 25 58 60 28 0 26 2 7 15 13 20 13 15 28 30 LIES 42 0 39 6 4 15 7 20 7 15 13 20 54 0 51 6 3 15 5 20 5 15 9 20 76 1 73 1 2 15 4 20 4 15 6 20 5 15 Table 23 continued Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 53 Checked SGJ June 2012 FHPP Pipe size mm Thickness of insulation mm O Diameter Bore Phenolic Foam Mineral Wool Phenolic Foam Mineral Wool 21 3 16 0 18 20 48 50 44 45 173 175 26 9 21 6 10 15 21 25 20 20 52 60 2900 42 4 35 9 5 15 9 20 9 15 17 20 48 3 41 8 4 15 7 20 7 15 13 20 ros oo 3388 80 5688 49 gt 88 9 gt 80 8 2 15 4 20 3 25 6 25 NOTES Thicknesses given are calculated specifically against the criteria noted in the table These thicknesses may not satisfy other design requirements The thicknesses shown in brackets are nearest the standard thicknesses available from manufacturers Some of the insulation thicknesses calculated are too large to be applied in practice but are included to highlight the difficulty in protecting small diamete
49. section of pipework on all pipework systems the Contractor is to subject the section to pressure testing and demonstrate to the satisfaction of the Consulting Engineers or other approved witness that the Section is sound The testing procedures are to be in accordance with the H V C A Guide to Good Practice for Site Pressure Testing of Pipework published in 1980 Each witnessed test is to be for a duration of one hour or such longer time as is necessary to inspect all valves and joints on the section being tested The decision as to whether or not the section is sound being governed by the rate at which the pressure fails together with visual inspection of all joints All faults discovered during such tests are at once to be remedied by the Contractor at his own cost and expense and the test re applied until the Consulting Engineers are satisfied that the section under test is sound On completion of the test the water is to be released and drained completely away as rapidly as possible the section being then thoroughly sluiced through to ensure the removal of as much dirt and dross as possible before being refilled and put into service On lines in which filling points air release points and drains have not been specified as a permanent feature they are to be provided by the Contractor to enable the lines to be tested In these cases the Contractor is to weld into the crowns and the inverts of the lines at appropriate points 15 mm wr
50. settings to match the characteristics of the plant concerned If the Controls Sub Contractor considers that superior control will be achieved by an integral action controller then this may be offered as an alternative it should have fully adjustable setpoint and integral action rate Where individual controllers are used for the various control functions they are to be flush mounted onto the face of the control panels Where a composite programmable controller is used a keyboard and back lit display for monitoring and adjusting the operation of the systems that are controlled are to be permanently mounted on the front of each control panel All thermostats sensors actuators control valves etc are to be individually labelled with Traffolyte labels using the reference numbers contained within this Specification All settings of all controls are to be fully adjustable 66 FHPP Electrical Work Every control panel is to have an isolator on each incoming feeder Relays delay timers H R C control circuit fuses etc are to be provided to ensure fully functional systems All internal wiring is to be neatly loomed with numbered ferrules at both ends of every wire corresponding to the numbering on the Controls Sub Contractor s wiring diagram All external connections are to be via numbered Klippon clamp type terminal blocks or equal Any wiring and equipment which could remain live when panel doors are open is to be shro
51. system is described in the mechanical portion of this specification The contractor shall allow for the installation of all containment required for the installation of the BMS 300 150 FIRE DETECTION AND ALARM INSTALLATION The contractor shall modify the existing fire alarm circuit in the chiller room where necessary to suit the alterations indicated to plant and equipment on the FHPP Drawings Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 43 Date Checked SGJ June 2012 FHPP All works including device disconnection and reconnection programming and commissioning shall be undertaken by the Honeywell the Bank s incumbent fire alarm maintenance provider Any alteration in the area of works which forms part of the Banks system shall only be worked on out of office hours and with the permission of the Client Areas requiring alteration shall be taken off line whilst works are carried out and the client informed with regard to the system being on or off line 300 160 EARTHING SYSTEM An earthing system shall be provided to conform with BS7671 2001 BS7430 1991 and local electricity supply authority guidelines The Equipotential bonding conductors shall include but not be limited to Drainage pipework Ventilation ducts Mechanical services pipework Mechanical Plant Domestic hot 8 cold water pipe Cable ladders trays trunking conduit All conduct
52. to inhibit electrolytic action Protection of pipes All tubes delivered to the site by the Contractor are to be unpainted and are to be given one coat of an approved preservative before despatch While stored on site care is to be taken to prevent the tubes from rusting and they are to be properly racked and covered the necessary racks and covers being supplied by the Contractor No installed tubing showing evidence of corrosion will be permitted to be put into service Pipe grading air release and draining All pipes are to be carefully graded to a rise or fall to facilitate the removal of air and for the complete draining of lines for maintenance purposes and otherwise as specified Wherever high points or other air traps occur or as noted on the tender drawings the Contractor is to supply and fix an air vent terminals At all low points and on the downstream side of all isolating valves and wherever else shown on the drawings and elsewhere as necessary to ensure that all sections which may be isolated may also be drained the Contractor is to provide a drain valve as specified in this Specification Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 60 FHPP Pipe expansion and anchoring In the pipework of any service likely to operate at 40 C or over arrangements are to be made for thermal expansion to be taken up by change of direction or by the installation of expansion jo
53. which shall be reviewed by the project team The Contractor shall review the working drawings to satisfy himself that they are in general accordance with the contract and drawing review procedure but neither such review nor the project team comments shall relieve the Contractor from responsibility for e Any deficiency or inaccuracy or non compliance with the Contract or of the Specification e Any error in the proper fixing of the Contract Works e The necessity of providing any work required by the Contract or the Specifications not indicated on the Working Drawings when reviewed by the Main Contractor Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 11 Checked SGJ June 2012 FHPP All drawings shall be produced at the following minimum scales Layout drawing and general arrangements 1 50 Plantroom and switchroom layouts 1 20 Sections 1 20 External Services 1 200 Schematics No Scale All drawings wherever possible to be on A1 sheets All drawings shall be AutoCAD format Version 2004 as a minimum Standard symbols shall be used throughout and a legend drawing or legend shall be attached to each drawing The Contractor shall take note that the level of information submitted must fully reflect the requirements of the specification and documentation issued for the project by the project team Should the level of information not be in line with the documentation or
54. with suitable fire resisting material and sealed with intumescent paste 200 080 ANTI VIBRATION PADS Except where higher performance anti vibration measures are specified or are necessary to meet the noise limitations specified the Contractor is to supply only a 25 mm thick Ticopad or equal and approved anti vibration pad for each pump and temporary chiller or other machine which he is supplying under this Contract and which is to be erected on a concrete base The pads are to be incorporated onto the base by the Main Contractor 200 090 PIPELINE WORKMANSHIP This Section describes the procedure and or the methods of installation of pipelines and materials etc to the Standard Requirements of the Consulting Engineers and is to apply to this Contract where appropriate in extension and amplification of the general intent and meaning of the basic descriptions given elsewhere in this Specification and the associated Drawings The contractor is to allow for taken welding testing samples to minimise the risk of developing crevice corrosion and to identify the proper materials and practices that are to be used Mild steel pipework All mild steel pipework is to be run in the quality of tubing later specified with joints whether screwed welded or flanged as stipulated all to the relevant British Standard Unless otherwise later specified pipework of size 50 mm or less to which there is easy access is to be screwed Other pipework is to be w
55. 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 31 Date Checked SGJ June 2012 FHPP system shutdowns The temporary chiller is to be installed alongside a new circulating pump which is to be retained on site once the temporary chiller is decommissioned PART 2 SPECIFICATION CLAUSES SPECIFIC TO T69 200 010 DESCRIPTION OF WORKS The whole scope of replacement works of the existing chillers have been phased into 3 periods In the first period existing chiller No 3 1 is to be replaced with its associated pumps No P3 1 8 P3 4 It is proposed to replace the Refrigeration machine No 3 1 first so the Refrigeration Machine 3 3 that directly works under the dictates of the secondary circuit is replaced last This would enable the chiller to run in the existing arrangement whilst eliminating the risk of unnecessary problems on the secondary circuit In the second period chiller No 3 2 shall be replaced with its chilled water and condenser water pumps No P 3 2 8 P3 5 in the same manner as the first chiller During this phase the standby pumps no P 3 3 and P3 6 shall be replaced too In the last period chiller No 3 3 shall be replaced with its associated pump no P3 16 amp P3 17 The following description of works is to be read in line with the phasing drawings in Appendix E 200 020 RESPONSIBILITIES As the proposed temporary and main chillers will have been procured by EBRD the following scope
56. 0G Butterfly valve gear operated C H W G 67 400 LV IV ALI BRZ disc C H W Return 970G Butterfly valve gear operated C H W G 72 250 LV IV ALI BRZ disc C H W to C H W Pump P3 1G M2000PN16 S S 4983 DI B FLY C H W G 73 250 D R V DRV MS DRV G OP PN25 C H W from C H W Pump P3 1G 970G Butterfly valve gear operated C H W G 74 250 LV IV ALI BRZ disc C H W to C H W Pump P3 1 M2000PN16 S S 4983 DI B FLY To be replaced Hattersley C H W G 75 250 D R V DRV MS DRV G OP PN25 C H W from C H W Pump P3 1 970G Butterfly valve gear operated C H W G 76 250 LV IV ALI BRZ disc C H W to C H W Pump P3 2 M2000PN16 S S 4983 DI B FLY C H W G 77 250 D R V DRV MS DRV G OP PN25 C H W from C H W Pump P3 2 970G Butterfly valve gear operated C H W G 78 250 LV IV ALI BRZ disc C H W to C H W Pump P3 3 M2000PN16 S S 4983 DI B FLY C H W G79 250 D R V DRV MS DRV G OP PN25 C H W from C H W Pump P3 3 970G Butterfly valve gear operated C H W G 80 50 LV IV ALI BRZ disc C H W Future New Valves Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx App 8 970G Butterfly valve gear operated CHW from Refrigeration Machine FHPP CHW 12 01 250 CHW 12 02 250 CHW 12 03 150 CHW 12 04 150 CHW 12 05 150 CHW 12 06 150 CHW 12 0
57. 340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx FHPP 2 08 2 09 2 10 Checked SGJ June 2012 Discrepancies All equipment shown on the drawings and not detailed in the specification room data sheets and all items detailed in the specification room data sheets and not shown on the drawings shall be deemed to be included and detailed in both Where there is a discrepancy between specification room data sheets and drawings tenders shall allow for the most onerous condition and identify any such instances with this tender Any queries on the specification and drawings shall be clarified with the Consulting Engineer not later than 10 working days before the date of return of the tender Working Area amp Contractor Facilities Contractor Facilities and the Contractors Site Boundary have been identified on the Ground Floor Plan drawing in Appendix G The Contractor is to agree with the Bank s representative on the location of the welfare facilities For the works in restricted iareas identified in the Appendix G the Contractor is obliged to obtain a Site Working permit from the Banks representative each time he needs to access and work within these areas A separate Event Schedule will be issued by the Banks representative on a weekly Monthly basis that will restrict the noise in the generator room chiller room as detailed in Appendix G in order to minimise disruption to the building opera
58. 340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 39 Date Checked SGJ June 2012 FHPP The existing site has an existing refrigerant leak detection system suitable for refrigerant R123 Due to the chiller replacement and change of the refrigerant the Contractor is to be responsible to supply install test and commission a replacement refrigeration leak detection system compatible with refrigerant R134a The system shall be provided with 4 point detection system and connect to the existing 2 point detection devices and 2 new detection devices The existing refrigerant leak detection system is 2 points CHILLGARD RT R123 Sn 591 B01 supplied by MSA Britain Ltd Lochard House Linnet Way Strathclyde Business Park Belshill ML4 3RA Tel 01698 573357 Fax 01698 740141 300 080 ELECTRICAL The existing power supplies to the chiller room emanates from the main building HV LV switch room which is located at Mezzanine level it is proposed that the MCCB s feeding the chillers will have been replaced prior to the contract A new MCCB has been installed to feed the temporary chiller and the existing MCCB s feeding the Motor Control Centres replaced prior to the contract The contractor shall utilise these devices and associated cabling for the connection of the new chillers with the exception of the supply to chiller 3 which shall require an additional cable installed in paralle
59. 34a Refrigerant P amp I Diagram amp General Arrangement Drawing Additional Prices amp Scope of Work Factory Performance Testing 100 Part Load Min Load 3 persons 1 JCI Inclusive of Travel Arrangements Accommodation etc 16 878 00 Decommissioning of the existing YT Machines R123 Disposal 17 580 00 Removal Disposal of YT machines 9 843 00 Storage of 2 Chillers from Oct 2012 to June 2013 1 785 00 Setting New Chillers in Place amp Rebuilding 35 724 00 Commissioning 3 915 00 Maintenance as Requested 10 246 00 Warranty as Requested No Additional Charge Extended 2 Year Maintenance 8 868 00 Extended 2 Year Warranty 18 660 00 Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com Johnson WK Controls Delivery Delivery periods will be confirmed in our acknowledgement of your official order However for your guidance we estimate that delivery of your equipment will be 15 16 Working weeks from receipt of your official order Please allow an additional 2 weeks if a factory witness test is required All delivery times are based on current production schedules stock position and order backlog and are from the date of receipt of your order with full and final instructions enabling us to proceed Warranty Please note that the standard warranty period ends 18 months after dispatch from the factory
60. 7 150 CHW 12 08 100 CHW 12 09 100 CHW 12 10 100 CHW 12 11 100 CHW 12 12 150 CHW 12 13 100 CHW 12 14 100 CHW 12 15 100 CHW 12 16 100 CHW 12 17 150 CHW 12 18 150 CHW 12 19 100 CHW 12 20 100 CWS 12 01 250 CWS 12 02 250 IV ALI BRZ disc 3 1 970G Butterfly valve gear operated CHW from Refrigeration Machine IV ALI BRZ disc 3 2 IV 970W DI B FLY VVE L OP CHW Bypass MV HiLok Fully Lugged c w IP2 CHW Bypass A FLOW 2050 PN16 D IRON BAL Autoflow VVE CHW Flow to buffer vessels IV 970W DI B FLY VVE L OP CHW Flow to buffer vessels IV 970W DI B FLY VVE L OP CHW Flow from buffer vessels IV 970W DI B FLY VVE L OP CHW to temporary chiller pump IV 970W DI B FLY VVE L OP CHW to temporary chiller pump DRV M2000PN16 S S 4983 DI B FLY MS DRV L OP PN25 CHW from temporary chiller pump DRV M2000PN16 S S 4983 DI B FLY MS DRV L OP PN25 CHW from temporary chiller pump IV 970W DI B FLY VVE L OP Temporary Chiller bypass DRV M2000PN16 S S 4983 DI B FLY MS DRV L OP PN25 CHW from temporary chiller IV 970W DI B FLY VVE L OP CHW to temporary chiller IV 970W DI B FLY VVE L OP CHW from temporary chiller IV 970W DI B FLY VVE L OP CHW to temporary chiller IV 970W DI B FLY VVE L OP CHW Flow to buffer vessels IV 970W DI B FLY VVE L OP CHW Return from buffer vessels IV 970W DI B FLY VVE L OP CHW to temporary chiller IV 970W DI B FLY VVE L OP CHW from temporary chiller 970G Butterfly valve gear operated IV ALI BRZ disc C
61. C H W G 54 250 D R V Exchanger HX3 1 C H W to Flat Plate Heat Exchanger C H W G 55 250 M V HX3 1 i C H W from Flat Plate Heat SZEFA C H W G 56 250 D R V Exchanger HX3 2 C H W to Flat Plate Heat Exchanger C H W G 57 250 M V HX3 2 C H W to Refrigeration Machine C H W G 58 250 M V MV HiLok Fully Lugged c w IP2 RM3 1 To be replaced Keystone M2000PN16 S S 4983 DI B FLY C H W from Refrigeration Machine C H W G 59 250 D R V DRV MS DRV G OP PN25 RM3 1 To be replaced Hattersley C H W to Refrigeration Machine C H W G 60 250 M V MV HiLok Fully Lugged c w IP2 RM3 2 To be replaced Keystone Y 00 Enquires E4340 4 0 FHP SpecificationsM 8 Combined M amp E E4340 MAE Technical Specification docx App 7 sou FHPP M2000PN16 S S 4983 DI B FLY C H W from Refrigeration Machine C H W G 61 250 D R V DRV MS DRV G OP PN25 RM3 2 To be replaced Hattersley C H W G 62 400 M V C H W Heat Exchanger Bypass To be retained C H W from Refrigeration Machine C H W G 63 250 M V MV HiLok Fully Lugged c w IP2 RM3 3 To be replaced Keystone M2000PN16 S S 4983 DI B FLY C H W from Refrigeration C H W G 64 250 D R V DRV MS DRV G OP PN25 Machined RM3 3 To be replaced Hattersley C H W to Refrigeration Machine C H W G 65 250 M V MV HiLok Fully Lugged c w IP2 RM3 3 To be replaced Keystone 970G Butterfly valve gear operated C H W G 66 400 LV IV ALI BRZ disc C H W Supply 97
62. Checked SGJ Date June 2012 FHPP MECHANICAL AND ELECTRICAL TECHNICAL SPECIFICATION for the Replacement Chiller Works at European Bank for Reconstruction and Development Prepared by Fi FHPP Hepton Court York Road Leeds LS9 6PW June 2012 FHPP Checked SGJ pare sune2or2 Date Revision Date Details Author Checked June 12 Tender Issue MA SGJ Checked SGJ Date L June 2012 FHPP INDEX SECTION DESCRIPTION PAGE No SEG TION 1 00 NtrOduGtion s edo RE dA ieee eect AA iza dele das 1 SECTION 2 00 General Heouiremente eee aaa aaa aaa aaa enne 3 SECTION 3 00 Scope of Works enne aaa aaa innen nnns nn 19 SECTION 4 00 Enabling Works enne en nennen enn nn nennen rennen nn 22 SECTION 5 00 Chilled Water System sesssssssssssssseseseenenee nennen enne nnne nenne nennen 30 SECTION 6 00 Chilled Water Pipework and Fittings ccccecsceeeseeeeeeeeeeeeeeneeeseaeeseeeeseaeeeeneeeseaeens 45 SECTION 7 00 eet EE 63 SECTION 8 00 Sundry Works in Connection with Engineering Gervices 76 APPENDIX A Schedule of Tender Drawings eee aaa aaa aaa aezaaaeaaacece App 1 APPENDIX B Summary of Tender eee aaa aaa aaa nennen nnne nennen nennen App 2 APPENDIX C Project Programme App 5 APPENDIX D Schedule of Valves nennen nennen nenne nennen App 6 APPENDIX E Phasing Drawinges eee aaa aaa aaa aaa ENE
63. E THI ECT I I I Le Lora re re ra gt IT U ONA F J J 100mr EE DETAIL A As A Ej Jot FL 2 6 cos I KI ail x E A Lyh ald 470 ST yJ FF A A t TA 45r EFRIG WACHINE 3 EFRIG MACHINE 3 18 ER e 1 ENSE NDENSE d lod poll WATER FLOW RATE ATER FLOW RATE 141 INLET WATER TEMP INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS 4 gt EVA AT EVA AT EI Bag ATER FLOW RATE ATER FLOW RATE VA I ma FOR WALIE mm CHW F INLET WATER TEMP INLET WATER TEMP Se ERIE lt TET WATER TEMP TLET WATER TEMP LI cj ADM o S LIN ITY d LI ITY T EASING UNIT z RANNA AT VEZZANINE LEVEL Lb y 4 n HW F m d gt T A mr CHF I LATES amp gt do E Aon AS TOFLOW HILLED WATE HEAT ANSE WAT lt EFRIG MACHINE S A ow EXCHANGE Aa q P4 Yt gt Ty a E A a f per H a a iy x E A 1 H 150mm PRIVARY F oS a LT ga T Cal D PAL e E pa GER gt lt I A l
64. E 40MM LATE gt d 4 FRAVE H HEAT EFRIO MACHINE 3 AUTOFLOW y Y HILLED WATE EXCHANGE ENSER WATE Eea AEN gt g d E ENSE Reeg fi eise R wsl 4 Eegen ze SE 1 gt 0 s 2 ee D SE 8 i y 8 r pT v Wwa ARCHIVES AH Y Fe EFRIDG VACHNE 3 as D 8 8 a E d Ee A A Ges LI t gt gt gt Wu s Y A 4 gt l H Y 4 LATE Y EVAPORAT ETAIL_A AINTENANCE BYPA E I TOME L EFRIG MACHINE 3 ALVE DETAIL SERVI 1 i 8 68 EXCHANGE E 5 LT ROOM UNIT EN ENSE ENSIBLE COOLE i it D T E i i e A Baren I m S ved al TROL 2H E 4O H 3 Ox ER H TL ZE 8 8 p M d F z ech IH U I rd 40MM CHW Fi Si Hd r4 j f T HILLED WATER STORAGE TOTAL STORAGE LT PIPEWORK FREEZING NEW VALVES CLOSED VALVES NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK
65. E 3 HILLED WATE EXCHANCE E SER WATE d T gt T z T S T ENSE 150mm PRIVARY F F A IF Ou H d D Bog T x 8 y amp l D MT d ARCHIVES AH 3 P EFC VAHE n ES ES zi H Ox M ES E H A A ENSE ES LT His E T BV gt Si l H Y LATE Y EVAPORAT ETAIL A AINTENANCE BYPA E E I TEE L 7 EFRIG MACHINE 3 ALVE DETAIL SERVIN M NE FEST m Um AE 7188392 ze LT ROOM UNIT ENSIBLE COOLE la ut als bd dum EF Iur TT 8 g el vos P gt EVAPORAT ved F FC STRI I I LU al NTROL AH ES ES 4 I 4 ES H TL a 8 8 p M a d F i ech IH U I rd ur Hd nt d gt f T HILLED WATER STORAGE EQUENT WEEKEI HUT REPLACEMENT OF MAIN ISOLATI ALVE ENSE ATE E Primal t hutdowt n dat tem running via temporary chiller mmm PIPEWORK FREEZING C NEW VALVES Fa CLOSED VALVES Fa NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEWLPIEYPAILED PIPEWORK NEWLY INSTALLED PIPEWORK
66. EVAPORAT EVAPORAT 1 I T lp S ATER FLOW RAE 5 ATER FLOW RATE m pa FOR WALIE mm CHW F me INLET WATER TEMP INLET WATER TEMP EEE lt WL TLET WATER TEMP TLET WATER TEMP s CTT 4 LING CAPACITY 400 TON LING CAPACITY 900 T ERAUS UNIT z RANNA AT VEZZANINE LEVEL Lb y 4 00mm CHW F a RUA i I A 24HR CHALF et N cen LATES amp gt do T I FRAVE H HILLED_ WATE HEAT AUTOFLOW y ay SY EXCHANGE ENSER WATE e z lt lt EN gt D i CONDENSER f l I TE M STRAP v 0 NRY y fg gs He tp i A r ARY E j 1 m EE eps me I m idi EVAPORATOR M L ei d gt VAPORATO Y L I D sm W d a ARCHIVES AH Ge z Y Ha EFRIDG MACHINE 5 el He e Er H ZO H lt ENSE L gt lt gt gt Hv3 Y d A gt L l H Y 4 PLATE Y EVAPORAT ETAIL_A AINTENANCE BYPA E E I ive L m EFRIG MACHINE 37 ALVE DETAIL SERVI 1 8 8 EXCHANGE E 5 LT ROOM UNIT TM ENSE ENSIBLE COOLE i it D T E l Y T et t tf EVA AT S ved al TROL 2H E 4O H E X Ox 4 ER Hoo X5 SUE mE a d F iv H HI nA E i Hd r4 j f T HILLED WATER STORAGE TOTAL STORAGE LT mam PIPEWORK FREEZING d NEW VALVES W W CLOSED VALVES P 4 NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK F HILLE F EA HILL
67. F 2 4 E Bun E Horde r4 j f T HILLED WATER STORAGE TOTAL STORAGE LT FHPP APPENDIX F Temporary chiller and Main Chiller technical details to be attached to the final pdf document Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 12 Johnson WK Controls Our Ref RETRO 6808 DW 1 1204 5 Op1 2 May 2012 EBRD One Exchange Square London EC2A 2JN For the attention of Mr G Card Dear Graeme Re European Bank Water Cooled Chiller Supply Further to your recent request for information would you please accept our revised proposal to design manufacture amp supply the chillers as detailed in your tender documents ref PUR1108 23 Option 1 New Equipment 3 x York manufactured YKHDFVP85ENG 2500kW R134a Water Cooled Wariable Speed Driven Liquid Chillers with Centrifugal Compressor Inclusive of Compressor motor assembly PED Heat Exchangers Oil Management System Optiview Micro Computer Control Centre Variable Speed Drive VSD amp Harmonic Filter Additional Options amp Accessories Cooler Flow Switch Condenser Flow Switch 19mm Cooler Insulation Evaporator Marine Water Boxes 10bar Evaporator Connection Flanges DN250 Condenser Marine Water Boxes 10bar Condenser Connection Flanges DN250 Compressor Isolation Valves Form 7 Shipment R134a Refrigerant Spring Anti Vibration Mounts P amp I Diagram amp Gener
68. H H W F gt 4 E AUTOFLOW jy craig MACHINE 3 e Ha ar gt lt lt HEX FE A Y A Ai CP E E T IA O sp E g ABORA H r2 d EFC VAHE z Os L RU i ENSE m SS t i EVAPORAT ds ETAIL A AINTENANCE BYPA 1 NETS ALVE DETAIL SERV v f CS Wun a FC S IT UT t Acca C TRY me ENSIBLE COOLE x didis E D V cie Daho EVAPORAT da za a ES cs VFC FO TRW M Se Ze Se Ze o WD H z HI GA GR LIS i S 2 p E H TR D HILLE TOTAL ST PIPEWORK FREEZING NEW VALVES CLOSED VALVES NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK
69. H T a ET d i nz APORA Y N A T v ARCHIVES AH 4 IM EFRIDG MACHINE 5 E x v 2 T 1 cs Li i J iy A y M LL d 5 amp w od Saa T i HPE AF A A EVE per Bn ZS 1 ES i E 44 m JAZZ LLLA Jy t we Y I I A Mr HI cs L l Y A PLATE j Y mapaes et ah FRAVE ETAIL A AINTENANCE BYPA D E cs i v L CS K EE MACHINE 3 ALVE DETAIL SERVI M nt HF mox HE HE HF am I LT ROOM UNIT TM d ENSIBLE COOLE T it D I T a EVAPORAT M M H La LE patel pact Li de e il F m TROL AH FAE GAA I TAA UAR U Hoo X5 SUE I man i e d F z ech IH U I rd ur Horde f T HILLED WATER STORAGE TOTAL STORAGE E IE CHILL AND A JATED VALVE mam PIPEWORK FREEZING C NEW VALVES Fa CLOSED VALVES Fa NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK
70. LVE DETAIL SERVIN H chm EXCH AGE E m LT ROOM UNIT e ENSIBLE COOLE alae R it D T l Y FU SC z l NSE EVAPORAT F ved WA L ROOM AH H F ES I rt ES Sp Gei H TL ZE T M a H I fi zt I pq J Lan z i Fi gt gt pod nt T HILLED WATER STORAGE TOTAL STORAGE E ESSURISATION UNIT E A A A E mm T s B C CENE r1 T j ALTE ATI O THE E IZATI IT ECTI H HE S TI IFICA TI IO EXISTI H t A FA E AOmr NOU E HILLED WATE roty COLD FEE ET 1 PRESSURE RELIEF SET TO Stren AT FS T HL LEVEL E PLANT cs n n OPTION 1 Al KS REPLACEMENT OF CHILLER J E F EXI Al HILLER Primal i hutd hillei mam PIPEWORK FREEZING NEW VALVES Fa CLOSED VALVES Fa NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK
71. PORAT EVAPORAT r 1 eg lt ATER FLOW RATE 5 ATER FLOW RATE 114 I a gt I m ma FOR WALIE mm CHW F me INLET WATER TEMP INLET WATER TEMP ERARIO 4 WD TLET WATER TEMP TLET WATER TEMP LT EI AP APA 9 I LIN m TON LI m T dE z SN AT VEZZANINE LEVEL Lb y 4 ien CHW F a RUA gt T A 24HR CHW F ell LI IV op LATE gt do lt I FRAVE H HEAT EFRID MACHINE 3 AUTOLOW w 7 WE WATE EXE ANGE ENSER WATE y Eet e e l T GT GT ENSE DRM T 2 Jor XY p JE La uut 3 i QJ UA H AZ ONO ALL UMS B8 1 PADRE TK WST e a A A y m ae rsen E ez Y 4 M T a SE HH pese po di 5 U STM al ARCHIVES 4H He a Y Hee s EFFIDC HE as D I aS a 5 T Ee A A ia P no Y i gt L l H Y PLATE Y EVAPORAT ETAIL A MAINTENANCE BYPA z mI ive EFRIG MACHINE 3 ALVE DETAIL SERVI 1 8 8 EXCHANGE E 5 LT UNIT ius ENSE ENSIBLE COOLE alae R it D T E KS n EVAPORAT a me Y Y Z H TROL AH H OE 4 X H E H TL ZE Fy FT M a d F 9 US U U ru 40MM CHW Fi gt Hd r4 j T HILLED WATER STORAGE TOTAL STORAGE LT AIN KS REPLACEMENT OF CHILLER IE CHILL IP AND A IATED VALVE PIPEWORK FREEZING NEW VALVES CLOSED VALVES NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK
72. Speciallo lr 0 8 Pi ramp Ft ON Ft OFF Short time current Isd Short time delay tsd 8 Switch OFF PE QU Fixed at 06 sec OU b Special 6 Instantaneous pick up li Adjust to Mid point settings Fixed at 4800 A Bs88 _MCB Factory settings Rated 320 A adjusted to 297 6 A Reset to original Switch panel 2B Way 18 MCCB Settings for Temporary Chiller The contractor shall allow for the final connection to the temporary chiller using 4 core 50mm XLPE SWA LSF cable and auxiliary 25mm CPC This cable shall be installed on to an external uni struct frame with cable ladder and Big foot floor pads to protect the existing concrete slabs located between the exit point of the cable to the temporary chiller position The contractor shall ensure the Final termination in to the temporary chiller is in line with the manufacturers recommendations A temporary connection shall be made from the temporary chillers steel framework to the nearest earth spike pit in accordance with BS EN 62305 This cable shall be protected throughout its length mechanically and for the avoidance of theft The temporary chiller shall require a new BMS outstation located adjacent to the LV isolator in the generator room the electrical contractor shall provide all necessary power supplies to this equipment wired using XLPE SWA LSF cable from local distribution boards The power supply to the chiller shall be metered and moni
73. THE TENDERER The following Summary of Tender must be completed and returned with the completed tender documents Failure to complete this summary will not permit the Tenderer to be considered The Tenderer is required to break down the Tender into the following items These values shall include the cost of all materials labour overheads and profit and shall be complete in all respects Enabling Package Mechanical 001 Pipe Freezing e 002 New shunt pumps e 003 Pipework valves insulation etc c 004 Automatic controls BMS 005 Installation of temporary chiller inc mark up for Contractors attendance handling charges coordination etc g 006 Chilled Water Bypass Modification to the existing bypass e Installation of new bypass 007 Crash deck 008 Craneage material handling e 009 Removal of redundant plant and equipment Enabling Package Electrical 001 Main HV LV Panel Works a 002 Remote Distribution Board e 003 Cable Installation 004 Isolators g 005 Containment 006 Labour extra over for of hours working 007 Testing and Commissioning Main Works Mechanical 001 CHWS amp Cond Water pumps 002 Pipework Valves insulation etc 003 Automatic Controls BMS 004 Installation of chillers inc mark up for Contractors attendance handling charges coordination etc
74. V HiLok Fully Lugged c w IP2 RM3 2 Keystone M2000PN16 S S 4983 DI B FLY C W S from Refrigeration Machine C W S G 43 250 D R V DRV MS DRV G OP PN25 RM3 2 Hattersley Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx App 6 sou FHPP C W S to Refrigeration Machine C W S G 44 250 M V MV HiLok Fully Lugged c w IP2 RM3 3 Keystone M2000PN16 S S 4983 DI B FLY C W S from Refrigeration Machine C W S G 45 250 D R V DRV MS DRV G OP PN25 RM3 3 970G Butterfly valve gear operated C W S G 46 250 LV IV ALI BRZ disc C W S to Cond Water Pump P3 17 M2000PN16 S S 4983 DI B FLY C W S from Cond Water Pump P3 C W S G 47 250 D R V DRV MS DRV G OP PN25 17 970G Butterfly valve gear operated C W S G 48 250 LV IV ALI BRZ disc C W S to Cond Water Pump P3 4 M2000PN16 S S 4983 DI B FLY C W S from Cond Water Pump P3 AAA C W S G 49 250 D R V DRV MS DRV G OP PN25 4 970G Butterfly valve gear operated C W S G 50 250 LV IV ALI BRZ disc C W S to Cond Water Pump P3 5 M2000PN16 S S 4983 DI B FLY C W S from Cond Water Pump P3 C W S G 51 250 D R V DRV MS DRV G OP PN25 5 970G Butterfly valve gear operated C W S G 52 250 LV IV ALI BRZ disc C W S to Cond Water Pump P3 6 M2000PN16 S S 4983 DI B FLY C W S from Cond Water Pump P3 C W S G 53 250 D R V DRV MS DRV G OP PN25 6 C H W from Flat Plate Heat
75. WATER TEMP 23 9 INLET WATER TEN FIRST TLET WATER TEMP TLET WATER TEMP LS gt mr lt EVAPORAT EVAPORAT I I i M Lu lt ATER FLOW RATE 5 ATER FLOW RATE VA m ma FOR WALIE mm CHW F me INLET WATER TEMP INLET WATER TEMP EEE lt WL TET WATER TEMP TLET WATER TEMP LI E cj F ADE o S LIN ITY 400 TON LI ITY T EASING UNIT z RANNA AT VEZZANINE LEVEL Lb y 4 00mm CHN E Y m gt lt gt I IHR CHF e V ce LATE gt do lt T I FRAVE AUTOFLOW ty Y HILLED WATE i Loft WEST EFRIG MACHINE 5 lt AEN gt R LE y i DENSE ree Hx z S A 1 L Lt 150mm PRIMARY Fi E i n La Wet gg te I ka 7 n T do TT gy Te y pr TEEN d M s T EVAPORAT YA j 1 O SR W P tA ARCHIVES AH 6 m Y MA x S EFRING VACHNE 3 2 p j S T j p Tye ln ES ES EF K pa keo kal a I i i Li R gy Pe B k 4 3 ENSE i LI t gt gt HVS ri La pig 2 gt gt A I E AT F l Y YA PLATE i i Y D ETAIL A AINTENANCE BYP A Wi Be gy Te 7 pr ive W ST EFRIG NACHINE 3 ALVE DETAIL SERVI mi fen EXCH AGE pe ea Dee L l4 2 BLE SC um eee e D m PA E ESR ML I HD p mol V sT EGEKET 1 Fo FECIT Y y tA ke TROL ROOM AH Ep dea ECH W L Lol K SE Fi TI I AH a A FE zer Ip B Hope gt I I 2 gt H I F 2 4 E Bun E Horde r4 j f T HILLED WATER STORAGE TOTAL STORAGE LT
76. WS to Refrigeration Machine 3 1 970G Butterfly valve gear operated IV ALI BRZ disc CWS to Refrigeration Machine 3 2 Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 9 To be installed new sou June 2012 Hattersley Keystone Hattersley Oventrop or equal and approved Checked SGJ June 2012 FHPP 970G Butterfly valve gear operated CWS 12 03 250 IV ALI BRZ disc CWS to Refrigeration Machine 3 3 Strainers 910PN16 CI Y STRAINER TAP amp DRILLED C W TEST POINTS Non return valves 850PN16 CO CHECK VVE WFER PATT Drain Cocks 15mm 81HU BZE GLAND COCK IV Isolating Valve DRV Double Regulating Valve MS Metering Station MV Motorised Valve CHW Chilled Water CWS Condenser Water Note This Valve Schedule is to be read in conjunction with the M amp E Technical specification and tender drawings Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 10 FHPP APPENDIX E Phasing Drawings to be attached to the final pdf document Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 11 PIPEWORK FREEZING NEW VALVES CLOSED VALVES NEW OPEN VALVES EXISTING PIPEWORK STRIPOUT NEW PIPEWORK NEWLY INSTALLED PIPEWORK
77. a signal to pumps to match the chiller frequency drive value in order to increase decrease the chilled water flow rate The TREND system is to monitor the chiller operation and unload load the chiller base on the COP value so the maximum efficiency on the chiller is achieved On increasing load the chiller is to operate up to 75 output prior to signalling the next chiller operation The reason for this is to ensure that the operating chillers do not trip when another chiller is loaded During a low cooling load requirement it is necessary to ensure that a minimum flow rate of chilled water is maintained across the operating chiller therefore the chilled water pumps would never drop below the set value On the condenser water side the pumps are to be set to operate under the dictates of the set point temperature in conjunction with the cooling towers Motorised control valves are provided on chilled and condenser water flow to each chiller and are to be used only for full isolation of the chiller The new chillers are to be set on Sequencing of the chillers to rotate weekly to a new lead chiller A Green Run lamp is to be provided on the control panel for each chiller and is to be lit when the chiller is operating A Red Trip lamp is to be provided on the control panel and is to be lit when the Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 71 FHPP alarm contact which is integr
78. actor Correction Weights and Dimensions Shipping Weight with Micro Channel Coil Operation Weight with Micro Channel Coil Refrigerant Charge R410A Overall Length Overall Width Overall Height kg kg kg mm mm mm Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A WilsonQjci com Johnson WK Controls YLAA HE 0260 4 Scroll hermetic 2 17 35 67 100 R410A 266 76 3 5 4 72 71 1 Shell and Tube 28 6 7 400 3 50 1 142 181 310 141 310 141 293 Soft Start 2394 2588 49 2911 2242 2508 based on no AVMS fitted Johnson WK Controls Prices Our prices exclusive of vat to supply amp deliver equipment would amount to the sum of 1 x YLAA HE 0260 Standard Chiller Inclusive of R410A Refrigerant Charge Single Point Non Fused Disconnect Switch Low Ambient Kit Bacnet Communication Micro Channel Condenser Coil PED CE Standard Single Speed Condenser Fans Additional Options amp Accessories Soft Start Power Factor Correction Pressure Relief Dual Kit Flow Switch Full Unit Enclosure Wire Compressor Acoustic Enclosure Spring Anti Vibration Mounts Commissioning Delivery Delivery periods will be confirmed in our acknowledgement of your official order However for your guidance we estimate that delivery of your equipment will be 8 Working weeks from receipt of your
79. aintained at the required setpoint by the chiller s integral controls The leaving water setpoint is to be automatically re set via the LON data link on a schedule as follows The base setting shall be as follows Chilled Water Flow Temperature 6 7 deg C Chilled Water Return Temperature 13 3 deg C all settings to be fully adjustable A Green Run lamp is to be provided on the control panel for each chiller and is to be lit when the chiller is operating A Red Trip lamp is to be provided on the control panel and is to be lit when the alarm contact which is integral with the chiller signals a fault condition Alarms and warnings are to be signalled as detailed in Standard Conditions The operating condition of each chiller is to be monitored by the B M S via the LON link and all available data is to be displayed on the B M S Graphic Shunt Pump A new fixed speed circulating pump is to be incorporated into the existing control system by utilising two existing spare ways where each pump is to be fed from a separate panel Each shunt pump is to be provided with a HAND OFF AUTO switch Each pump is to have a DOL as set in Standard Conditions The condenser water pumps and the chillers are to be shut down immediately without pumpset run on if a pressure alarm is relayed from the pressurisation unit The pumps to have dpt differential pressure transduces fitted across the flow and return connections for BMS fault
80. aison between the users on site Bank s representative and Consulting Engineers to ensure that when existing services are shut off modified cut back etc that all parties are aware and in agreement with the proposed works well in advance of their implementation 2 25 Origin of Equipment Wherever practicable equipment installed shall have been manufactured in a country within the EEC The equipment shall carry CE markings for proof of construction to International Standards Where equipment does not carry CE marking copies of conformity certificates shall be provided Any equipment not meeting this criterion may be rejected and any costs associated with this rejection will be borne by the Contractor 2 26 Standard of Manufacture Where equipment is identified either by manufacturer and or model number it shall be taken that this is the standard of quality expected However this does not preclude the offer of alternative equipment provided it is of equal standard and quality to the named manufacturer 2 27 Equipment Equipment shall be installed and connected to the manufacturer s recommendations unless detailed otherwise in the Specification or agreed in writing with the Engineer 2 28 Equipment Quotations The Contractor shall ensure that where quotation references are given in the Specification the equipment and numbers of items offered by the manufacturer comply with the details given to the relevant drawings and in this Specificatio
81. al Arrangement Drawings Additional Scope of Work Factory Performance Testing 3 persons 1 JCI Decommissioning of the existing YT Machines R123 Disposal Removal Disposal of YT machines Setting New YK Chillers in Place YK Chiller Rebuild Storage of 2 YK Chillers Extended Warranties Maintenance amp Commissioning Technical Data A full description of the chiller equipment offered can be found on www johnsoncontrols com Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com Design Data Unit Type and Size Model Number and Type of Compressor Number of refrigerant circuits per Unit Capacity steps per chiller Technical Data Refrigerant Type Cooling Capacity Power Input Compressor Full Load COP NPLV Evaporator Number and Type Passes Entering Leaving Fluid Temperature Fluid Flow Rate Pressure Drop Fouling Factor Diameter of Fluid Connections Condenser Number and Type Passes Entering Leaving Fluid Temperature Max Min Entering Fluid Temperatures Fluid Flow Rate Pressure Drop Fouling Factor Diameter of Fluid Connections Electrical Data Mains Supply Number of Panels FLA Min Circ Amps Max C B Weights and Dimensions Shipping Weight Operation Weight Refrigerant Charge R134a Oil Charge Overall Length Overall Width Overall Height No Type No kW kW No Typ
82. al with the chiller signals a fault condition Alarms and warnings are to be signalled as detailed in Standard Conditions The operating condition of each chiller is to be monitored by the B M S and all available data is to be displayed on the B M S Graphic Chiller Demand The positions of all selected primary and secondary chilled water control valves in the building are to be monitored by the B M S Whenever any of the valves is open to its pre set set point and providing that at least one zone of the building is in occupation it is to be deemed that chilled water is required and the chilled water plant is to be started noting that there is always a cooling demand for the secondary circuit Whenever all of the valves are less open than pre set set point it is to be deemed that chilled water is not required and the chilled water plant is to be shut down Whenever it is shut down under these conditions the pumps are to run on for a period of one hour Time delays and position dead bands are to be provided to prevent short cycling of the chillers Chilled Water Primary Pump Operation 4 No chilled water circulating pumps are to vary the chilled water flow rate to match the chiller load The pumps own controls are to be incorporated into the existing control system and to be controlled in such a manner that when the chiller load changes the pump would automatically change its operation based on the signal from TREND controls It is prop
83. all be given 5 working days to provide any comments on the programme The demonstration may if felt necessary include classroom type discussions and visit to the manufacturers premises As Built drawings and O amp M Manuals Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 14 Checked SGJ June 2012 FHPP The Contractor shall not later than 6 weeks prior to practical completion provide the completed operating manuals and as fitted drawings At the commencement of the testing and commissioning the draft copies of the manuals and drawings shall be available for the bank s representatives and Consulting Engineers comments The completed manuals and drawings shall be handed to the Bank via a hand over certificate suitably signed The Contractor shall note that a separate copy will be required for the Health and Safety file 01 As built Documents The Contractor shall provide 3No paper copies 3No CAD current version 2004 as a minimum copy of all as built drawings When produced as built drawings shall present to the Bank s staff sufficient diagrammatic information to enable them to maintain and operate the plant as effectively as possible to the original design standard 02 O amp M Manuals The service manual documents shall be contained in suitable binders The binders shall be Nyrox Sliplock NLA A4 welded PVC with pull open two rings fittings at 80mm centres
84. and welded or screwed in the lines as applicable All ends of pipe are to be reamed before fixing to remove the burr Particular care is to be taken to ensure that all vertical pipework is parallel with the adjacent walls and at right angles to the walls and ceilings Any pipes which in the opinion of the Consulting Engineers are not fixed in accordance with the above are to be removed and refixed at the Contractor s expense Generally Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 59 FHPP pipes are not to be fixed at less than 75 mm clear from ceilings and floors without written sanction to do so from the Consulting Engineers The Contractor is to take special care to prevent dirt or rubbish entering the open ends of pipework during erection Appropriate metal or plastic screwed caps or wood plugs only are to be used to prevent this occurring plugs of waste or wool are under no circumstances to be used Should any stoppage in the circulation occur after the various systems have been put into operation the Contractor is to attend and rectify the matter at his own expense Pipework which is to be insulated is to be fixed in such a manner as to allow each pipe to be insulated around its full circumference leaving 25 mm minimum between the insulation of any pipe and the finished surfaces of the building or any other pipework insulation or other services Any such pipework incorre
85. aster programme can be satisfied The Contactor shall ensure that all aspects of the works whether Mechanical Electrical or Building are closely co ordinated as no extra costs will be accepted for any works required due to non compliance with this clause The Contactor shall ensure that where necessary the manufacturer and equipment suppliers receive copies of the Electrical and Mechanical and Building drawings and information to ensure the above is fulfilled 2 05 Tender Information The drawings relating to the Contract provided by the Bank s representative shall be read in conjunction with each other and all relevant Specifications in the preparation of the Tender by the Contractor No claim will be considered on the grounds of want of knowledge in this respect 2 06 Documentation Prior to Tendering Any questions in respect of the requirements for testing and commissioning shall be raised in writing with the Consulting Engineer during the tender period No claims for extra will be considered if the Contractor neglects to examine the full requirements 2 07 Project Programme For a detail project programme please refer to Appendix C The Contractor is required to review the works described in this specification and with his expertise to develop a proposed programme of works where he shall illustrate a revised time scale for each activity if he feels that it would be more suitable for the installation works Y 00 Enquires E4
86. ating of the tapes must be sufficient to maintain the frost protection of the water in the pipe at 10 K above outside ambient Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 56 FHPP The heating tapes are to be moisture proof and rated at approximately 10 Watts per metre Each length of tape is to terminate in a waterproof junction box Tapes are to be spiralled around the pipes at the pitch necessary to achieve the 10 K differential temperature for the size of pipe concerned The installation is to be strictly in accordance with the manufacturer s recommendations Any fittings valves air vents etc are to be traced To be manufactured by Tyco Thermal Controls 3 Rutherford Road Stephenson Industrial Estate Washington Tyne and Wear NE37 3HZ Tel No 0800 169 6812 their Type FS A 2X or equal and approved 200 070 FIRE STOPPINGS AND SLEEVES In all cases where pipes of any service pass through walls floors or ceilings the pipes are to be enclosed by sleeves of similar metal to the pipe concerned and such sleeves are to be of a size to permit free movement of the pipe and carefully cut to length The Contractor is to acquaint himself with the nature of the wall finishes and is to co ordinate his work with the Main Contractor A neat finished appearance is required Where the wall is fire resisting oversize sleeves are to be used and the annular gap is to be packed
87. atisfy only one minute of chiller operation at minimum cooling capacity Therefore on standard air conditioning systems such as Fan Coil etc a buffer tank is not normally required Heat Recovery An additional dual refrigerant circuit plate heat exchanger provides warm water up to 50 C Suitable for air driven heating systems and domestic hot water preheat Tested for operating reliability Every TEMPO chiller is fully factory tested before being shipped in order to ensure trouble free installed operation Dual refrigeration circuits TEMPO dual refrigerant circuits and multiple scroll compressors provide system stand by security Plain language 40 character display TEMPO has a microprocessor controller with a 40 character plain language display of temperatures pressures operating hours number of starts and start stop holiday times Control functions include accurate leaving liquid temperature compressor lead lag system safety protection and integral circulating pumps Efficient low sound fans TEMPO has aerodynamically designed low sound fans located in separate compartments to prevent air Re circulation and to reduce inefficient fan start stop operation All aluminium condenser coils The incorporation of micro channel aluminium coils provide improved heat transfer reduced fan power require less refrigerant and eliminates the possibility of galvanic corrosion caused by the contact between dissimilar metals The coil
88. attendances coordinate deliveries installation removal testing amp commissioning and setting to work monitoring of the completed works Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx FHPP Checked SGJ June 2012 2 20 Early Plant Deliveries and Extended Warranties 2 2 The Contractor shall include in his tender for the timely delivery and protection of all equipment materials and plant as may be necessary to ensure the works proceed in accordance with the overall programme together with extended warranties to ensure all manufacturers warranties are valid for at least the full defects liability period commencing after acceptance of the complete installation under this Contract The Contractor shall take account of the severly restricted space available for the storage of equipment materials etc Under no circumstances will any storage be allowed in the Service Road outside the plantroom The Contractor shall also advice when he anticipates deliveries and offloading of any consequence 10 days in advance of such deliveries and which will have to be carried undertaken outside of normal working hours Lifting Hoists And Temporary Scaffolding The Contractor shall include for all temporary hoists temporary scaffolding etc necessary to complete his services installations The Contractor shall submit to the Engineer a method statement describing the proposed procedur
89. be arranged in a logical array on the front face of the panels at a convenient height with Traffolyte labels to indicate their function To be arranged for top entry of all cables unless otherwise stated Externally mounted control panels must be weatherproof and constructed from GRP Unless otherwise stated all controls starters etc for plant are to be located in the control panels Refer to Control Panel Schedule for the number and location of each panel The Automatic Controls components covered by this Section are to incorporate the products of the TREND manufacture who is also responsible for maintenance of the existing control system The selected manufacturer s products must be used throughout except where inappropriate or where otherwise specified later The controls subcontractor is to be responsible for modifications and amendments to the existing BMS graphics so all new equipment is included The programmable controllers are to be manufactured by Trend The automatic control system design engineering including control panels actuators isolators valves Sensors and controls wiring supply BMS Graphics etc shall be provided and commissioned by the incumbent automatic control specialist London Field Services Department Trend Control Systems Ltd Albery House Springfield Road Horsham West Sussex RH12 2PQ Tel 01403 22691 Contact James Dauncey Mobile 44 0 7794622089 email james dauncey trendcontro
90. been disconnected the electrical contractor shall install a new 3 core 240mm XLPE SWA LSF cable to run in parallel with the existing 3 core 240mm cable from switch panel 2A way 7 The MCCB protecting chiller No 3 shall be adjusted to 750A using the settings as detailed below 1250A NS Micrologic 2 0 A N Long time current lo lr Long time delay tr lo Ir 0 6 0 5 f j Use IDML setting S hte ipo EE 24 De rated sett i SBE RED Special tr reo Standard v fos Speciallo lr 0 4 Pi ramp Ft ON Ft OFF Short time current Isd Short time delay tsd 1 5 Switch OFF Eli Fixed at 02 sec foe A Special 1 5 Adjust to Mid point settings B588 MCB Factory settings Reset to original Settings for Main chillers when replacement has occurred As the remaining new chillers are connected the electrical contractor shall adjust the MCCB devices within the main switch panels utilising the settings illustrated above 300 090 MOTOR CONTROL CENTRES The electrical contractor shall allow for the replacement of each of the protective devices within each of the motor control centres as each item of plant is replaced As part of the new chiller installation the mechanical contractor shall be replacing the pumps associated with the chillers As each pump is disconnected the electrical contractor shall replace the existing BS88 switch fuse within the MCC with a new BS88 switch fuse rated as the existing as a di
91. cess requirements The Contractor shall in accordance with the Main Contract and in accordance with the Main Contractor s programme provide detailed builder s work information detailing without limiting the generality of the foregoing the positions of all holes chases ducts trenches manholes plinths bases building in requirements for brackets or inserts cut outs etc and all related making good requirements Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 12 Checked SGJ June 2012 FHPP The Builder s work shall be carried out by the Contractor 2 34 Definition of Approval 01 Submission Of Working Drawings The Contractor shall be required to provide all necessary working drawings details for the correct execution of the works and method statements These drawings shall include but not be limited to information for builderswork co ordination with the work of other disciplines and any other drawings reasonably requested by the Client or his authorised representative All drawings shall be submitted for approval comment by the design construction team at least 10 working days prior to the date whereby the information is to be implemented The Services Contractor shall provide three to scale paper copies of each drawing per issue and 3 A3 copies of each drawing per issue Additionally all drawings shall also be in AutoCAD format Version 2004 as a minimum 02 Wo
92. chnical Specification docx App 4 Checked SGJ June 2012 FHPP APPENDIX C Project Programme to be attached to the final pdf document Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx App 5 EBRD Chiller Replacement IMPLEMENTATION PROGRAMME gi rose 3 project services poem Dm Di Prem Tri E 1011724 los 15 222905 12 182808 1017 EST 1421280411 1929104 1118 2801108 16 22290018 202708 IMPLEMENTATION OF MAIN WORKS 208 days Mon 13 08 12 Wed 29 05 13 B Appoint Contractor Odays Mon 13 08 12 Mon 13 08 12 13 08 EW Lead in Familirisation Period 25days Mon 13 08 12 Fri 14 09 12 4 6 Pre contract Meeting 0 days Fri 17 08 12 Fri17 08 12 4FS 5 days 17 08 isa Risk Workshop with Contractor 0 days Fri 31 08 12 Fri31 08 12 5SS 15 day r 31 08 i 8 Stakeholder Liaison 5days Mon 10 09 12 Fri 14 09 12 5SS 20 day 9 Pre start meeting Odays Tue 18 09 12 Tue 18 09 12 5SS 27 day 18 09 ES EMEN a Enabiling Works 47 days Tue 18 09 12 Wed 21 11 12 q E Preparotory Works 24days Tue 18 09 12 Fri 19 10 12 5FS 1 day 31 First Shutdown 2days Mon 22 10 12 Tue 23 10 12 13 mM Enabiling works 14days Wed 24 10 12 Mon 12 11 12 14 KE Second Shutdown 2days Tue 13 11 12 Wed 14 11 12 15 d Handover 5days Thu 15 11 12 Wed 21 11 12 16 B RER
93. ctly fixed is to be removed and refixed correctly at the Contractor s expense Wherever it is possible to do so pipework is to be fixed in such a manner that subsequent access to any pipe can be made without disturbing the other pipes No joints of any kind are to be made within the thickness of walls floors or ceilings or in a vertical duct without permanent access In screwed pipework of 50 mm nominal bore and under unions are to be provided in all cases where they may be required to enable sections of pipework to be subsequently dismantled and refixed without disturbing the building fabric and in any event at intervals not exceeding 12 metres on straight runs All pipework larger than 50 mm nominal bore 54 mm o d and all flanged pipework of 50 mm nominal bore and below is to be provided with flanges for the connection of valves expansion joints fittings etc and pairs of flanges in all cases where they may be required to enable sections of pipework to be subsequently dismantled and refixed without disturbing the building fabric and in any event at intervals not exceeding 12 metres on straight runs All pipework and fittings are to be installed at least 150 mm clear from electric conduits and wiring after allowing for the thickness of any insulation Anti electrolytic couplings The Contractor is to provide and fix between copper pipe and all galvanized steel and mild steel pipework and vessels non ferrous couplings of an approved type
94. d M amp E E4340 MAE Technical Specification docx 73 FHPP It is intended to retain the system operation as existing however in order to make the most of the new chillers and new refrigerant the temperature set point on the outlet water temperature will be changed from 23 9 C to a variable minimum figure of 13 5 C The Contractor is to allow for a new external wet bulb temperature sensor that is to be linked to the control system The temperature set point is to be set so it varies with the external wet bulb temperature The above works are to be undertaken after the final chiller replacement has taken place Temporary Chiller The temporary chiller is to be available to run at night and during weekend shutdowns as required The chiller is to be provided with it s own control panel in the generator room The chiller is required to run under its own individual controls The main electrical power supply to the chiller is to be separate from the Main Control Panels and is supplied from the new control panel in the generator room The operation of the chiller is to be initiated by closing voltage free contacts in the Control Panel and is to be stopped by opening the same contacts A HAND OFF AUTO switch for the chiller is to be incorporated on the Control Panel The BMS Is to be provided with a compatible device in order to monitor the chillers operating conditions on the BMS supervisor When operating the chilled water temperature is m
95. d into the lines Mild steel flanges are to be used for flanged pipework with welded bosses Particular care is to be taken to ensure that branch pipes do not protrude into the bore of the main and that no welding material projects into either of the tubes Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 58 FHPP The Consulting Engineers may require to inspect any or all of such pipework before it is installed to ensure that these conditions have been complied with Sample tests of welds are to be carried out To be not less than 1 of the welds on the project nor less than 3 per welder Results are to be recorded and submitted to the Consulting Engineers Copper pipework and fittings All copper pipework is to be run in the quality of tubing specified with the joints whether soldered screwed brazed bronze welded or flanged as stipulated all to the relevant British Standard Flanged joints are to be made by brazing insert type flanges with copper alloy inserts and loose steel locking rings to the ends of the pipe otherwise as for steel flanged joints except that brass bolts are to be used Joints in the run of pipes of 54 mm O D and over in closed circuit systems only may be made by bronze welded butt joints in accordance with the requirements of Clause G3 5 Bends sets and springs are to be either prefabricated or cold drawn on Site by machine to a radius of no
96. d making the existing louvre good so it matches the existing however this is to be agreed with the Bank s representatives prior to commencing of the works Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 78 FHPP APPENDICES APPENDIX A Schedule of Tender Drawings The following drawings are indicative only and are produced to provide the Contractor with an overview of the various areas of the building They are not intended to be design drawings and shall not be used as such Drawing Number Title Scale E4340 1001 Rev B Temporary Chiller Location 1 50 E4340 1002 Temporary Chiller Installation 1 50 E4340 1003 Chiller Plantroom Proposed Modifications to 1 50 Chilled Water and Condensate Pipework Layout E4340 1004 Proposed Chilled Water Schematic NTS E4340 1005 Proposed Controls and valve Schedule NTS Drawing E4340 1013 Chiller Plantroom Existing Chilled Water and 1 50 Condensate Pipework Layout E4340 1014 Existing Building Air Conditioning Schematic NTS E4340 1015 Existing Chilled Water Plantroom Schematic NTS and Valve Schedule E4340 3001 Proposed LV Schematic NTS E4340 3003 Proposed Electrical Services 1 200 Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx App 1 FHPP APPENDIX B SUMMARY OF TENDER SUMMARY OF TENDER FOR THE MECHANICAL SERVICES TO BE COMPLETE BY
97. d the Contractor fail to remedy the defects within the specified time period issued under written notice the Bank s representative shall instruct the works to be executed by other competent bodies and the costs of this instruction will be deducted from or added to the retained sum In the event the Contractor calls the Bank s representative for re inspection of the works and the works are deemed unacceptable and not remedied the cost of the Bank s representatives abortive visit will be charged against the retained sum All lists of incomplete and unacceptable work prepared by the Bank s representatives will be carried out at the discretion of the Bank s representatives The Contractor shall carry out his own detailed inspection of the works prior to notifying the Bank s representatives that the works are fully complete and ready for inspection All services prior to being covered up shall be offered for inspection with a minimum 5 days notice being provided In the event that the inspection carried out by the Bank s representatives produces an excessive list of items that are incomplete or needing corrective action then the Bank s representatives reserves the right to contra charge the Contractor the cost of carrying out the inspection Maintenance During Defects Liability Period The Contractor shall include for the full planned preventative maintenance of all installed plant and ancillaries during the 12 months Defects liability Period inc
98. discretion No guarantee is given or implied that the expenditure of such sums will be authorised in whole or in part The sum stated shall be included in the Tender for the Contract Works without any addition of any kind The full amount of all Provisional Sums shall be deducted from the Final Account to which there shall be added the agreed cost of such works as carried out against the Provisional Sum 2 13 Contractor Supplied Information The contractor shall supply the following information at the time of tender submission DI List of equipment used and manufacturers of equipment 02 Fully completed Summary of Tender 03 Any applicable qualifications 04 Proposed Programme of Works 05 Method Statements 06 Proposed Team CV s 2 14 Programme The Contractor shall be responsible for familiarising themselfs with the site and any relevant documentation within the tender or otherwise which provides details relating to the programme phasing of works out of hours working dates and time periods for executing such works All works shall be carried out and executed in accordance with the main programme The Contractor shall ensure the Bank s representative is fully aware of the requirements for testing commissioning and verification of the installation The time allocated for the above sequence of works shall not under any circumstances be reduced or compromised to allow other activities to be carried out The criterion for system verification
99. e CC L s kPa m K kW in No Type C CC L s kPa m2K kW in V Ph Hz A A A kg kg kg L mm mm mm Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A WilsonQjci com Johnson WK Controls YKHDFVP85ENG 1 Centrifugal 1 10 100 VSD R134a 2500 364 6 869 9 726 1 Shell and Tube 2 13 3 6 7 90 5 53 0 01761 10 1 Shell and Tube 2 23 8 31 57 32 12 87 4 52 4 0 04403 10 400 3 50 2 582 728 1200 15760 16965 779 75 7 5650 2210 2794 based on no AVMS fitted Johnson WK Controls Prices Our prices exclusive of VAT to supply deliver equipment amp carry out the scope of works below would amount to 3 x York manufactured YKHDFVP85CNG 2500kW R134a Water Cooled Variable Speed Driven Liquid Chillers with Centrifugal Compressor Inclusive of Compressor motor assembly PED Heat Exchangers Oil Management System Optiview Micro Computer Control Centre Variable Speed Drive VSD amp Harmonic Filter 505 563 00 vat Options amp Accessories included in the above Price Cooler Flow Switch Condenser Flow Switch 19mm Cooler Insulation Evaporator Marine Water Boxes 1Obar Evaporator Connection Flanges DN250 Condenser Marine Water Boxes 10bar Condenser Connection Flanges DN250 Compressor Isolation Valves Form 7 Shipment R1
100. e temporary chiller and pipework with electrics If required by the Bank s representative the Contractor is to also allow for making good louvre penetrations The decommissioning and removal of the existing water cooled chillers including the existing refrigerant disposal that will be undertaken by Johnson Controls YORK under the control and supervision of the Contractor Chillers and associated equipment The new scheme shall provide 3No VFD Water Cooled chillers each rated at 2500kW The new chillers are procured by EBRD direct under a separate contract The whole scope of replacement works of the existing chillers have been phased into 3 periods At each period only one chiller shall be replaced with its associated pumps During the last phase the standby pumps shall be replaced Due to the restricted access and service space each chiller is to be delivered to the site dismantled and is to be rebuilt in the chiller plant room by the chiller manufacturer Johnson Controls YORK The manufacturer is to be responsible for the delivery positioning installation and commissioning of the chillers The pumps chilled water connections and controls are to be the responsibility of the Contractor After each installation period the new equipment will be tested and commissioned so that its operation will match the existing equipment After the replacement of the third chiller and all associated equipment the Contractor is to allow for the re commissi
101. e to be fixed speed however they are to be provided with an inverter control to simplify the commissioning process and also to ensure that the pump would be set on its best system resistance As described previously the chillers are to be replaced one at a time and there selected a testing period for each chiller and a set of pumps before a subsequent replacement of another chiller takes place Before all three chillers are replaced it is important for the new system to match the operation of the existing system therefore the inverter drives on chillers and pump shall be disabled until the installation is completed Once all of the works are completed the system controls are to be rewritten under the dictates of the new system This part of the testing and commissioning is more closely described under Section 8 00 The existing condenser water circuit is to remain the same although to gain the most efficient operation it is proposed to amend the cooling water temperature set point at 13 5 deg C At this point the refrigerant R134a that is used in the water cooled chiller would work most efficiently The existing secondary pumps are to remain operational and are to be refurbished as a part of the EBRD s own refurbishment programme To minimise the risk on the project an additional air cooled 250kW temporary chiller is to be introduced to the system this chiller will support the essential cooling loads during the primary Y 00 Enquires E4340 4
102. ed to provide free cooling to the building during the colder months This system is no longer in use and it is redundant The chillers serve the building via two separate chilled water circuits The primary circuit provides chilled water for the cooling coils in numerous air handling units that serve the VAV system within the building The primary chilled water flow to the cooling coils is controlled via a pressure operated 2 port motorised control valve As the motorised valve closes the chilled water is regulated via a bypass system installed at the end of the primary chilled water run The secondary chilled water circuit was not part of the original installation and it has been installed at a later stage to suit the specific Bank s requirements and it serves IT suites within the building The system demands cooling 24 7 and is referred to in this specification as an essential cooling load system The existing installation also includes 2No 5000 litre buffer vessels connected to the secondary circuit to back up the cooling if the primary system fails The buffer vessels are located in the mezzanine plantroom 1 03 Description of the proposed works The new works consists of replacing of the existing the chillers pumps valves and replacement of all final connections to the chillers and pumps The work is to be carried out in phases so that shut downs are minimised and the chilled water to the IT rooms is maintained To maintain the cooling to the
103. een Run lamp are to be provided for each starter Auxiliary contacts are to be provided as necessary Manual control switches are to be as specified in the appropriate clause All Run and Trip statuses are to be monitored by the B M S Alarms are to be signalled for trip and read back occurrences Each Star Delta starter is to be of the multi contactor type with suitable interlocks between the contactors and a suitable automatic timer to control the closing of the Delta contactor Each Star Delta starter is to start the associated motor in Star however the start is initiated Each Star Delta starter is to be de energised whenever the isolator local to the motor is opened An auxiliary pole is to be provided on the isolator of each Star Delta motor for this purpose In other respects the starter is to be equipped as for DOL starters specified above Where auto changeover is specified each motor is to have its own starter or VFD and associated lamps switches fuses etc all as specified above An additional No 1 No 2 Duty Sharing lead motor selector switch is to be fitted In the event of the selected motor tripping the trip lamp for that motor is to illuminate and control is to be transferred to the other motor The run and trip status of each starter contactor VFD is to be monitored by the B M S With ELV control circuits it may be necessary to have a low current control relay within the remote control circuit to prevent voltage
104. elded Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 57 FHPP Screwed joints are to be of British Standard pipe thread clean threaded and pulled up tight Joints are to be made with an approved graphite compound and fine threaded hemp or P T F E tape only Red lead will not be allowed Welded joints are to be in accordance with the requirements of Clause G3 5 Flanged joints are to be made by screwing on screwed pipework or welded on welding pipework to the ends of the pipes drilled flanges the flanges to be turned on edge faced full across The ends of the pipes are to be flush with the face of the flanges The two flanges forming a joint are to be flush with one another all round when in position with all bolt holes in alignment The joints are to be made with Klingerite or other equal jointing materials full faced specially stamped and not cut from sheets on Site arranged to fit concentrically with the bore of the pipe and in no way to obstruct the bore of the pipe Mild steel pipework fittings a Screwed Pipework Malleable iron long and easy sweep beaded or banded fittings are to be used for screwed and socketed work Square tees will not be used except where open vents are taken off or for non circulatory branches Eccentric reducing sockets are to be used where changes in pipe sizes occur Unions are to consist of two screwed halves with ground spherical faced
105. em for maintaining critical site plant during the works e Existing panel control sections are to be modified to allow parallel operation of the old and new control systems e Starter controls contactors and timers are to be removed or modified to accomodate the new variable speed pump systems The existing controllers are to be removed and disposed of in accordance with environmental and electronic equipment regulations Provide details of compliance with obligations such as Environment Agency waste permit or licensed disposal facility e Interfacing with existing Hand Off Auto and run and fault lamps is to be modified to accomodate the new variable speed pumps e A temporary control panel is to be manufactured installed and commissioned to provide basic control and monitoring of the temporary chiller e Chiller interfaces will utilise BACnet over MSTP protocol One interface controller per chiller is to be used to avoid a single point of failure e New sensors valve actuators and controls are to be installed in the chiller plant room to replace the aging existing equipment e Seasonal commissioning minimum two visits to be included Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 70 FHPP e Update the operations strategy to current required software standard and provide strategy drawings for all BMS controllers for prior approval by client engineer Primary Chillers O
106. enerally electronic electric All control valves actuators linkages sensors controllers relays etc necessary for fully operational systems are to be provided under the Contract unless specifically otherwise stated All controls are to be selected by the Controls Sub Contractor to ensure stable and accurate operation The Contractor is to arrange for the Controls Sub Contractor s schematic and wiring drawings to be forwarded in duplicate to the Consulting Engineers for comment in reasonable time before manufacture or installation proceeds Irrespective of any comments it is the responsibility of the Controls Sub Contractor through the Contractor to ensure that the finished installation performs as specified in this Section The new control panel and modifications to existing control panels are to be supplied and installed under this contract Wiring of motors equipment sensors valves dampers etc from the outgoing terminals of the control panel is to be carried out by the Contractor The Contractor is to ensure that the outgoing terminals are sized to suit the cables concerned External wiring diagrams for the control panels detailing terminal numbering cable sizes and number of cores are all to be provided by the Controls Sub Contractor under this Contract in good time to allow the work to be carried out The reference codes adopted in the Schedules at the end of this Section are to be followed throughout the project indicated
107. entrifugal chillers The chillers are proposed to be variable speed drive to enhance the efficiency of the cooling system in the building The chillers are proposed to connect to the existing primary and secondary chilled water system The system capacity has been sized to match the capacity of the existing chillers to ensure that the landlord system capacity would remain the same once the building changes its tenant The current cooling demand of the building has been calculated to be 4750 kW which is approximately 35 lower than would be the actual chiller capacity As the proposed chillers are variable speed drive this would enable the system to stimulate its output so it runs on its best efficiency The actual proposed control system is described in more detail in Section 7 00 One of the leading criterion for the chiller selection was the ability of the chiller to turn down to 10 of its total load and to remain without tripping at this load for a longer period of time This criterion has been derived from the essential cooling requirements that are required to run 24 hours a day During the out of working hours and weekend when the building is unoccupied the chiller will always be required to run on its minimum loads The chillers are proposed to be replaced alongside the existing chilled water and condenser water pumps It is proposed to install a sensor less variable speed pump on the chilled water side On the condenser water side the pumps ar
108. envisaged these will require replacement as the termination position at the pumps is not being altered Switchgear and final local isolation at the pump positions is to be renewed and existing power factor correction removed as the new pumps are installed with variable speed drives located on the new pumps The section of the MCC s which contains the Trend controller is to be refurbished with replacement of the controller and associated relays and control equipment this will need to be carried out item by item as there is no available space in the existing cabinet nor adjacent to the existing panel alternatively a chassis could be manufactured which would sit inside the existing doors to the cabinet with the necessary control equipment attached built in such a way to enable removal of existing equipment as it becomes redundant 300 100 SHUNT PUMP ELECTRICAL SUPPLIES The electrical contractor shall install the power supplies for 2No shunt pumps Shunt pump No 1 shall be supplied from Motor Control Centre A MCC A and shunt pump 2 from Motor Control Centre B MCC B In order to supply the shunt pumps from the motor control centres the electrical contractor shall install a new BS88 switch fuse rated to the load of the pumps which have an FLC of 6 10Amps 3KW This new switch fuse shall match the existing control centre switch gear manufacturer within each existing MCC The switch fuse shall utilise one of the existing spare ways within each o
109. equirements The insulation is to be finished with a covering of Aluzinc 0 6mm Thick Stucco finish metal cladding fitted so as to have joints beneath to shed water and with all valves and flanges fitted with lined removable purpose made metal boxes with quick release metal toggle fasteners Cladding to be secured by self seal pop rivets It should be noted that the chilled water flow and return pipework external to the Plantroom is to be electrically trace heated as specified elsewhere and the insulation sections support brackets etc are to allow sufficient space for this Sections are to be close butted and all longitudinal and circumferential joints are to be sealed by having overlap of facing materials of not less than 50 mm sealed with an adhesive Alternatively all butt joints sealed with Idenden T303 aluminium foil adhesive tape as approved by the Insulation manufacturer to form a complete vapour barrier and weathering seal Sections are to be formed into mitred lengths to run in uniform thickness around all bends sets and tees At all pipe support brackets Kooltherm or similar high density pipe insulation support units of a thickness equal to the pipe insulation thickness are to be installed with the pipe clips installed over the weatherproof finish Insulation sections are to be close butted to these units sealed with foil faced Class O tape and the weatherproof finish taken over the joints with the completed work
110. er drawing further described in Section 5 00 e Installation of the new controls including electrical works in connection Temporary chilled water pipework and circulating pumps At this stage of the works the Contractor is to complete the installation of the modified buffer vessels chilled water pipework that reconnects the new circulating pump with the existing buffer vessel flow connection and the new modified connections on the low loss header The Contractor is to allow for the installation of all associated valves as detailed on the tender drawings and in line with the valve schedule The existing cable tray that runs alongside the mezzanine level is to be removed and the cables located on this tray are to be repositioned to the adjacent tray This would enable the buffer vessels chiller chilled water pipework to be routed to and from the mezzanine level New connections for the temporary chiller chilled water shall be installed on the buffer vessels flow chilled water pipework alongside a new fully lugged butterfly type isolating valve The return chilled water pipework from the buffer vessels shall be reconnected to the prepared connection on the low loss header The new buffer vessel connections from the low loss header shall be interconnected with the existing flow and return connections son the buffer vessels will remain operational once the temporary chiller is not working Once the connections are completed the Contractor shall allow
111. er the installation and mechanical testing of the temporary chiller and the circulating pumps the Contractor is to allow for the thorough Testing and Commissioning of the temporary chiller and associated equipment The temporary chiller is to be controlled from its own control panel located in the generator room and the Contractor is to allow for detailed testing of the temporary chiller controls Installation of first and second chiller Upon the completion of installation of the first chiller chilled and condenser water pumps the whole system is to be tested and commissioned The system is proposed to run in the same manner as existing which would require the frequency drives on both chiller and pumps to be set on fixed speed until the last testing and commissioning Installation of third chiller Upon the completion of the last phase of the installation the new controls for the pumps and all three chillers shall be incorporated into the existing BMS and control system New primary chilled water pumps shall be reprogrammed to run on a variable speed in line with the chillers The whole of the installation shall be commissioned examined performance and pressure tested based on the full load operation All of the existing drawings and records shall be amended as necessary however new operation and maintenance manuals shall be produced for the chiller and control operation Once commissioned a 12 month monitoring of the installed equipment sha
112. es Wafer pattern to BSEN 1092 2 flanged connectors 65 mm and above to B S 1452 GR220 cast iron body Gunmetal disc and EPDM seal Approved non return valves or equal are Hattersley and of the exact type as set in the valve schedule Test Points To assist with commissioning self sealing pressure temperature test plugs are to be fitted in the locations listed below and wherever else shown on the Drawings or called for in other Sections of this Specification Each is to be fitted to the side of the pipe to prevent collection of air or scale Each is to be complete with a screw on brass cap and is to be suitable for the fluid in the pipe throughout its range of operating temperatures and pressures Test points to be constructed from a single piece of copper alloy body with two Elastomeric cores to provide a dual seal to prevent leakage when withdrawing P T probes The cap is to have an O ring seal allowing positive finger tightening Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 47 Checked SGJ June 2012 FHPP Test points to be Figure 631 standard length when fitted directly to uninsulated pipework components and Figure 633 extended type for insulated pipework components To be manufactured by Hattersley or equal and approved Pressure Gauges The Contractor shall supply and install in the positions indicated on the drawings including the schematic layout and
113. es and sequences for the delivery to site and hoisting into final position of the mechanical and electrical services equipment for each and every stage of the project 2 22 Labels Charts and Notices All labels charts and notices shall be in accordance with this Specification The details below give typical information on the type of labelling to be used on the project The Contractor shall note that the labelling requirements are extensive and detailed schedules and proposals shall be issued for comment prior to any labels being procured e Labels to indicate danger or acting as a warning shall be red characters and on a white background Labels on the outside of switchgear shall be laminated plastic with black characters on a white background Character for labels fitted to isolators and at the origins of installations shall be 10mm high and 1 5mm thick All other labels shall be 4mm and 0 5mm thick All labels shall be fixed with screws and shall not be glued or similar e Labels on single phase equipment as part of a three phase installation shall be indicated to which phase they are connected e Danger labels should be provided to all items of equipment and plant to identify where there is a separate source not isolated by the local point of isolation that needs to be isolated elsewhere e Each item of plant equipment shall be provided with an engraved label providing advice as to its function area that is serves where necessary the ke
114. esting equipment including the air compressor where relevant and is also to supply all necessary water for testing The Contractor is responsible for checking whether any components of the system are unsuitable for the full test pressure and for temporarily blanking off the pipes at the points of connection to those components for the duration of the test Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 62 FHPP SECTION 7 00 Controls PART 1 SYSTEM OBJECTIVES 100 010 PERFORMANCE OBJECTIVES The performance objective of this section is to replace the existing chiller controls with new ones under the dictates of new equipment and schedules The Contractor is to allow for close collaboration with the Consulting Engineers chiller manufacturer and TREND controls during the final software development phase A detailed control strategy is to be developed by the Contractor in conjunction with the TREND and consulting engineers for the scope of works described in this Section During the process the Consulting Engineers met with the TREND field department who is the current controls suppliers and discussed the project in greta depth PART 2 GENERAL AND STANDARD REQUIREMENTS 200 010 GENERAL REQUIREMENTS The automatic controls for all refurbished and new mechanical services are to be supplied installed commissioned and demonstrated under this contract The control systems are to be g
115. f plant and restrict a single fault shutting down large amounts of Plant Discrimination is required between the sub circuit fuses and control circuit transformer protection fuses Where a Form 4 Panel is supplied each compartment will have its control circuit separately fused and both poles isolated by the door interlocked isolator The circuits of any contacts which signal to other panels or equipment and which are energised from outside the control panel or any other items which are energised from outside the control panel are to be either i Appropriately shrouded and fitted with warning notices or Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 67 FHPP ii Located in the Category 2 area and isolated by auxiliary poles on the main control panel isolator or iii If the voltage is sufficiently low located in the Category 1 area Indication lamps are to be flush mounted on the panel fascia be a minimum of 22 mm diameter and have a multi segment LED lamp of sufficient intensity to be easily visible under normal ambient light conditions The lamps are to be replaceable from the panel fascia without the need to shut the panel down All lamps are to operate at 24 Volt maximum Time Switches Any time switches unless otherwise specified are to have a 7 day dial sub divided into hours or the electronic equivalent They are to have a 36 hour battery reserve which i
116. f the MCC s From each MCC the electrical contractor shall install a 4 core 6mm XLPE SWA LSF cable installed on new Heavy duty Galvanised tray at high level in the chiller room to a lockable isolator to be installed adjacent to each pump this shall be controlled via a contactor which in turn shall be controlled via the Building Management system BMS This contactor shall give a signal to the BMS when energised to indicate run status and isolated status All cabling shall be installed using XLPE SWA LSF cable Enclosures should give IP 55 protection for units installed in boiler rooms pump rooms and the chiller room and shall be of a standard equivalent to BS EN 60947 4 1 or BS EN 60947 4 2 The contactors shall be rated for continuous use and give in excess of 15 000 operations The pumps are to be supplied and installed by the mechanical contractor 300 110 SMALL POWER INSTALLATION The existing small power installation shall be modified were necessary The electrical contractor shall also be responsible for the provision of LV power to each new outstation on the Building Management System which shall be located at the new shunt pump position and the temporary chiller position The power supply shall consist of a unswitched fused connection unit wired in XLPE SWA LSF cable from the nearest distribution board with spare capacity available The contractor shall ensure that the distribution board utilised shall be part of the essential services
117. flanged All pipework and fittings shall be thermally insulated in full accordance with section 100 030Thermal insulation shall be CFC free foil faced phenolic foam installed fully in accordance with manufacturer requirements and recommendations Aluminium cladding will be required within all plantroom areas and where exposed externally The systems shall be duly pressure tested flushed cleaned and treated with inhibitors as per section 3 3 prior to commissioning All chilled water services pipework shall be installed as a traditional two pipe flow and return system complete with all necessary draining venting commissioning and isolation valves required to commission and maintain the system 200 020 CHILLED WATER VALVES AND FITTINGS Motorised Valves A motorised control valves are to be provided generally on chilled and condenser water connectors to the chillers generally as shown on the tender drawings and described elsewhere in this specification The motorised valves are to be fully lugged butterfly valves provided with a 0 10 V actuators The motorised valves are to be manufactured by Keystone or equal and approved and to be HiLok tyco lugged valve bodiesc w EPI modulating matching actuators Isolating Valves The following valves are to be provided and fixed as required by the Specification and or shown on the Drawings Generally isolating valves are to be provided with handwheels whilst regulating valves are to be of the sa
118. for the smaller chiller 3 3 Although the system serving the air handling units is a 2 port valve system which would intimate variable flow in reality the system is a stepped flow with chillers and pumps switching off if the cooling requirement drops Therefore as the 2 port valves around the building throttle down because the pumps are fixed speed the excess flow passes around a bypass at the top of the building until the point is reached where a chiller and matched pump can switch off and at that point the chiller is isolated from the system with 2 port valves On the condenser water side the pumps replicate the logic of the chilled water system with pumps switching off and chiller isolated when the system turns down Again the 3 No pumps P3 4 P3 5 P3 6 are sized for the larger chillers 3 1 amp 3 2 and a smaller pump P3 17 was installed to serve chiller 3 3 The existing system incorporates heat recovery in the form of plate heat exchangers that allow through a system of bypasses and 2 port valves the condenser water to cool the chilled water and in theory provide free cooling This only works when the external temperature is quite low and the low condenser water temperature can provide cooling to the chilled water without the need to operate the chillers The above system describes the Landlords base scheme originally provided to the building However as part of the tenant fit out a secondary chilled water system was installed that pro
119. for a period of 10 minutes adjustable after the chiller is shut down The pump is to re start immediately if the chiller is re started e The chiller and pump are to stop immediately if an Emergency Stop button is pressed Standard Warning and Alarm signalling is required Chilled Water Bypass The operation of the chilled water bypass is to be priced as an additional option as it yet is to be determined new bypass is to be installed or the existing bypass is to be reused Option 1 Existing chilled water bypass If an existing bypass is to be reused the Contractor is to allow for replacement of the existing double regulating valve on the chilled water bypass and allow for an installation of new metering station The Contractor is to Option 2 Installation of new chilled water bypass Installation of new chilled water bypass in between the chilled water flow and return pipework will ensure that the required minimum chilled water flow rate is always provided to the chillers no matter what the requirement is for the air handling units The bypass is to be fitted with a 2 port valve and with an accurate flow meter on the primary chilled water flow If the cooling load reaches a minimum level and the two port valves around the building close and reduce the chiller flow rate to a minimum level then a bypass valve will be opened to maintain a minimum chiller flow Condenser System Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combine
120. ging to the nearest drain or to atmosphere through a 15 mm copper drip pipe terminated with mitred end Automatic air vents are not to be fitted to pipework which may be at negative pressure under certain conditions of service or at a negative static pressure with all pumps and any pressurising devices turned off Air bottles as described above are to be provided instead in these locations Strainers Where indicated on the Drawings the Contractor is to supply and install Y type strainers with B S P T connections and gunmetal body on sizes up to 50 mm and flanged cast iron body on sizes 65 mm and above All units to include stainless steel strainer element and have integral tapped test points either side of the element plus gland cock for draining purposes in the cap cover Flanged strainers are to also incorporate a magnetic core element in the cover plate Screwed strainers are to incorporate a hose connection gland cock in the plug Approved strainers or equal are Hattersley and of the exact type as set in the valve schedule Non Return Valves Non return valves are to be provided on the discharge pipelines of individual pumps and in other locations required by the Specification and or indicated on the drawings All non return valves are to be suitable for both horizontal and vertical pipelines Non Return Valve Swing check pattern to B S 5154 PN25 Gunmetal or Bronze 50 mm and under body screwed to B S 21 taper Non return valv
121. giving a reliable vapour proof and weather resistant finish Flanged joints are to be insulated with oversized insulation sections and site cut rigid slab sections with the weatherproof finish neatly dressed over the complete assembly all sealed in accordance with the manufacturer s recommendations All external valves including metering stations are to be insulated with 50 mm flexible mineral mat Ductwrap covered in Bright Class 0 faced foil with all joints taped to maintain the vapour seal around the valve and the adjacent pipework The valves and flanges are to have a removable 0 6 mm Stucco Aluzink Dobelshield box which is to have an internal insulated lining with vapour seal to avoid damage to the valve insulation when the box is removed and re fitted Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 50 Checked SGJ June 2012 FHPP The Contractor is to ensure that even minor items e g pipes to sensors etc are fully insulated to prevent freezing and where main pipes are trace heated the minor items are also to be trace heated It should be noted that during the course of commissioning access will be required to double regulating valves metering stations and test points and due allowance should be made for removal replacement temporary weathering and making good of insulation as necessary c Chilled Water Pipes in Plantrooms and External Areas To be insu
122. hanged to a higher value to ensure the required parameter to unload is met sooner again remember to reset all parameters back to their original values once the operation has been completed 300 020 NEW CHILLER STRATEGY CONTROL The existing Trend BMS system will be modified to suit the operation of the new chillers and pumps which will require fairly extensive changes to the chiller and pump operation strategy The chillers will run under their own internal control regime but additional strategies will be required to make sure the chillers run at optimum efficiency The control strategy will remain largely as existing throughout the project until the last of the old chillers is de commissioned and replaced the system will remain a constant volume system The new controllers chillers and chilled water pumps are to be configured initially to operate in the same manner and in conjunction with the old system This would require the frequency drives on the new chillers and chilled water pumps to be set as existing until the very last chiller installation and its testing and commissioning Scope of Works e Old and new control systems are to be changed over in stages to allow the old and new plant to operate together through each of the project stages e Recover from the existing site system the required strategy and plant operation information and verify all inputs outputs and sensor requirements e Make safe electrical supplies and provide syst
123. he whole replacement work and to minimise the shut down period a 250 kW Johnson Controls YORK air cooled chiller is being temporarily added to the installation The temporary chiller is being purchased by EBRD and is to be installed by the Contractor The temporary chiller was sized essentially to cover the IT room cooling loads during the work on the chillers 3 03 Modification and Strip Out of Existing Services The Contractor shall allow for the stripping out of the existing chilled water pipework and the stripping out and removal from site of all redundant materials associated with the Mechanical services installation This shall include but not be limited to the following e Replacement of the existing chilled water run and standby pumps located at the ground floor plantroom e All existing connections to the existing chillers in the ground floor plantroom Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 19 FHPP 3 04 3 05 3 06 3 07 Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx Checked SGJ June 2012 e All existing connections to the existing pumps in the ground floor plantroom e All existing valves that are to be replaced on the chilled and condenser water system e Removal of the existing heat exchangers e Any works associated with the enabling and installation works e Removal upon completion of th
124. hnsoncontrols com General Comments The inclusion of some optional accessories can affect standard performance data and or unit weight dimensions Should you wish to incorporate any extras or other available accessories please contact the writer to establish if there would be any changes in the capabilities of the equipment quoted Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com Johnson WK Controls General Description of the Unit YORK TEMPO is a fully packaged air cooled liquid chiller with scroll compressors designed to be located outside on the roof of a building or at ground level There are two levels of operating efficiency Standard efficiency SE models amp High efficiency HE models Standard SE and HE chillers have normal speed fans and no compressor enclosure Each efficiency level has a selection of acoustic options Two speed fans Acoustically lined compressor enclosure Acoustically lined compressor enclosure and two speed fans Low sound LS models with acoustically lined compressor enclosure and fixed low speed fans Economical operating costs year round The incorporation of multiple scroll compressors results in high full and part load efficiencies As each compressor represents a cooling capacity step there is no efficiency reduction when the chiller operates at part load As the cooling capacity demand falls
125. ide x 6 mm thick All pipes likely to operate at 40 C or over and supported by bearer brackets are to be supported from their undersides with cast iron or non ferrous chairs and rollers The Contractor may propose alternative sliding support arrangements for consideration Wherever hangers or bolts are to be suspended from the soffit where no insert is provided the hanger or bolt is to be taken through the concrete slab to a 100 mm square backplate with nuts and washers except in the case of single steel pipes of 65 mm nominal bore and under and in the case of single copper pipes of 54 mm o d and under 200 050 IDENTIFICATION All pipes and items of equipment are to be identified in strict accordance with the established Colour Code or with B S 1710 and are to be further marked for direction of flow Such identification is to be applied at intervals not exceeding 16 metres and more frequently as necessary for clarity where any confusion might otherwise exist including plantrooms where identification is to be applied to each straight length All pipework that is trace heated is to be identified as such at a maximum of 3m centres 200 060 TRACE HEATING The temporary chiller chilled water pipework in the generator room and externally in the temporary chiller compound is to be trace heated with self regulating tapes below the insulation The trace heating is to be fed from and controlled by the Temporary Chiller Control Panel The r
126. ield sheet metal All insulation is to have a factory applied finish of Bright Class 0 reinforced aluminium foil The Contractor is to be responsible for ensuring that no paint or other covering is applied to the surface of any portion of the insulation that will impair it s Class 0 rating Any insulation work which is at variance with the specified requirements or which exhibits inferior workmanship is to be removed and subsequently replaced free of charge All pipes are to be insulated individually and not in groups of two or more and there is to be a minimum of 25 mm clearance between finished surfaces and 25 mm finished clearance from any building surfaces unless otherwise specified The Contractor is to ensure that all pipes and ducts are installed so as to meet this requirement Any variation from this requirement must have the approval of the Consulting Engineers prior to the installation of the pipework Care is to be taken that no insulation or cladding by passes or interferes with any vibration isolation provisions The Contractor will be responsible for the protection of all equipment during the application of insulation and is to promptly remove all waste surplus material and packaging from the site All un insulated plant and equipment is to be thoroughly cleaned and left clear of fouling by insulating materials No thermal insulation work is to be put in hand until after the satisfactory completion of leakage testing
127. ification Specification shall mean the Specification on which the Tender is based Site shall mean the actual place or places to which equipment shall be delivered or where work shall be done by the Contractor together with so much of the area surround the said place or places as the Contractor shall actually use in connection with the Works otherwise then merely for the purpose of access to the said place or places The site boundaries shall be shown on the contract drawings and agreed with the Main Contractor 2 04 Compliant Tender In considering a tender proposal the Bank and his authorised representatives will assume that the tenderer has made due allowance for all works under his control and that the submission of an offer is deemed to include all requirements for labour materials transport out of hours working and the like for both the design and execution of the work within the time scale detailed in the tender documents The successful tenderer will be obliged to provide any and all procurement information whether prepared by the tenderer directly or by his sub contractor supplier as requested by the client or his authorised representative for consideration by a nominated specialist Due allowance of time shall be deemed to have been included for the completion of the procurement together with approvals preparation of the builders work drawings completion of the procurement of goods and services in order that the m
128. imum External Temp Winter 5 C Main Chillers Capacity 3 No 2500 kW Temporary Chiller Capacity 250 kW New Chilled Water Primary 6 7 C flow 13 3 C return New Chilled Water Secondary 8 5 C flow 13 5 C return Condenser Water Temperature Set point Variable summer winter 02 Regulations and Standards The complete mechanical and electrical services installation shall be supplied installed tested and commissioned in full accordance with the following regulations and standards This shall include but not be restricted to FHPP Technical Specification British Standards Current Codes of Practice CIBSE Design and Commissioning Codes Clients insurance Requirements copies shall be provided on request to the Contractor Local Planning Requirements Building Regulations all relevant Approved Documents and Clauses Health and Safety at Work Act 1974 and associated references Machinery directive 2006 42 EC EMC Directive 2004 108 EC Pressure Equipment Directive 97 23 EC Safety Code for Mechanical Refrigeration EN378 2 2008 E T Regulations 17th Edition Construction Design and Management Regulations CONDAM Environmental Health Requirements Fire Officer Requirements and Precautions Act Local Bye Laws FOC Rules Control of Pollution Act 1974 DDA Requirements All current standards to be utilised for each service Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE
129. ints In all cases free guided movement of pipes is to be maintained and static points are to be arranged between joints by the installation of suitable anchors Expansion at changes of direction expansion joints and anchors are to meet with the following requirements The Contractor must ensure that expansion movements do not give rise to noise Pipes heat emitters etc must be supported on Teflon skids or hung on swivelling suspension rods or by other effective means to eliminate expansion contraction noises a Expansion at changes of direction Wherever this is possible bends are to be opened during erection to the full extent of their cold draw Where expansion is planned to take place through a change in the direction of the line of the pipe U bolt guides are to be omitted on the pipe supporting brackets immediately around the bend in order to permit lateral movement of the pipe Expansion Joints Expansion joints are to be of the corrugated stainless steel bellows type having outer sliding sleeves and end flanges to the appropriate B S Table as made by Vokes Ltd Engineering Appliances Ltd or other equal and approved All expansion joints are to be compatible with the material of the pipes into which they are fitted All expansion joints are to be opened during erection to the full extent of their cold draw while two suitable purpose made guides are to be provided on each side of each expansion joint at spaci
130. is paramount Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx Checked SGJ June 2012 FHPP 2 15 Inspection of the Site The Contractor shall be deemed to have visited the site to establish the details site conditions and existing services before submitting his tender bid No claim for extra costs will be considered is respect of any items the existence of which could have been established by inspection of the site The Contractor must make all arrangements to visit the site during the tender period with the named Clients representative 2 16 Inspections and Approvals The Contactor shall be responsible and shall make due allowance in the Tender for giving all notices to and attendance for inspection by the local Authority required for the execution of the Contract Works obtaining all necessary licenses approvals etc and paying all fees charges rates and taxes legally demandable The Contactor shall install the Contract Works in accordance with the Bye Laws Building Regulations and Regulations of all interested parties as previously noted and utilising best practises throughout Prior to commencement of the works a joint inspection of all areas where work is to be carried shall be undertaken and a detailed photographic record taken of all areas and existing services to form the basis of an agreed record of the areas to be handed to the Contractor 2 17 Use of Services Ins
131. it is running e The chiller will not operate unless the chiller s water flow switch is made thereby assuming water flow is maintained Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 72 FHPP e The pump is to run on for a period of 10 minutes adjustable after the chiller is shut down The pump is to re start immediately if the chiller is re started e The chiller and pump are to stop immediately if an Emergency Stop button is pressed Standard Warning and Alarm signalling is required Condenser Water Pump Operation The condenser water pumps are to maintain fixed speed at all times The pumps are to operate when the chiller operates and to be stepped in conjuction with the chiller operation and any minimum flow requirements of the cooling tower system The condenser water primary pumps are each to be provided with a HAND OFF AUTO switch Each pump is to have a DOL as set in Standard Conditions The condenser water pumps and the chillers are to be shut down immediately without pumpset run on if a pressure alarm is relayed from the pressurisation unit The pumps to have dpt differential pressure transduces fitted across the flow and return connections for BMS fault monitoring Each chiller and the pump are to be mutually interlocked so that e The chiller is to shut down if the pump s starter does not signal that it is running e The pump is to run on
132. joints between the two faces and one of the two faces is to be of bronze ie b Welded Pipework Testing Samples The Contractor is to allow for 10 of all welds to be X rayed If defects are found a further 10 of all welds at contractor cost are to be tested This process is to be continued and repeated until all defects are eliminated Welding General Tee branches of smaller bore than the bore of the main are to be welded on site generally but not without exception with a lead in the direction of the flow while branches of equal bore to that of the main are to be prefabricated with ends for butt welding to the appropriate British Standard Welds shall be suitably assembled to ensure that no crevices are introduced where corrosion may occur Bends are to be purpose made seamless mild steel of the same grade as the line with ends for butt welding while springs and sets are to be purpose made on the site cold drawn to a radius of not less than six times the nominal bore of pipes of 50 mm nominal bore and under and hot bent to a radius of not less than three times the nominal bore of pipes of 65 mm nominal bore and over In pipes of 80 mm nominal bore and under the seams are to be arranged along the sides of the springs and sets where possible or where not possible along the inside radii of springs and sets Reducing pieces may either be prefabricated or cut swaged and welded on Site with the pieces in either case butt welde
133. l to increase the overall in cabling size The existing cables feeding the chillers are 3 core PVC SWA PVC which are to be retained and reconnected to the new chillers when installed The contractor shall use new cables delivered to site with seals intact manufactured not more than one year prior to delivery labelled with manufacturer s name size description BS number classification length grade and date of manufacture and mark all types of cables with CENELEC cable certification marking or if included in British Approvals Service for Cables BASEC in accordance with BASEC regulations Supply cables with Low Smoke Zero Halogen LSOH sheathing shall be tested in accordance with BS EN 50267 and BS EN 60332 Wiring to power control and auxiliarycircuits shall be in accordance with Standard BS EN 50262 metallic cable retention Class A protective connection to earth IP54 Type B as BS 6121 5 Annex A All cables which are to run in parallel with new cables shall be harmonised and relabelled as per IET 17 Edition of the wiring regulations New Chillers The replacement of the chillers is to be carried out in a phased manner as described above with chiller No 3 being the first to be carried out Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 40 Checked SGJ June 2012 FHPP Each chiller shall require disconnection in a phased sequence and once chiller No 3 has
134. lated as described in a above with an additional cover of 0 6 mm Stucco Aluzink Dobelshield finish sheet metal where required by Clause M8 2 c with sacrificial layer Valves are additionally to have a removable 0 6 mm Stucco Aluzink Dobelshield cover as in a above Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx Si Checked SGJ June 2012 FHPP Based on B S 5422 2001 Table 8 Thickness of insulation for chilled and cold water supplies to prevent condensation on a low emissivity outer surface with ambient air conditions of 25 C and 80 rh Steel pipe size Temperature of water OD Phenolic Foam Mineral Wool Phenolic Foam Mineral Wool Phenolic Foam Mineral Wool EE E 9 M S EC ECL EE 25 34 15 25 20 30 25 40 32 42 15 25 20 30 25 50 100 14 150 168 20 40 30 50 35 60 200 29 2 8D 4 e 300 324 25 40 35 60 40 65 Vessels and flat surfaces 30 50 40 65 50 80 Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 52 Checked SGJ June 2012 FHPP Based on B S 5422 2001 Table 23 Minimum thickness of insulation required to give protection against freezing under specified commercial and institutional conditions Initial water temperature 2 C 2 C 6 C indoor unheated areas 10 C outdoor Evaluation
135. lengths of steel tube of the same size as the valve are provided upstream and down stream of each metering station to the distances recommended by the manufacturer Plantroom Drain off Valves At all low points and on the downstream side of all isolating valves and wherever else shown on the drawings and elsewhere as necessary to ensure that all sections which may be isolated may also be drained Copper alloy drain cocks for closed circuits shall be suitable for service conditions of 10 bar and 120 deg C and be of the glanded type The pipe connection shall be threaded male parallel to BS 2779 with hose union outlet cap and strap Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 46 Checked SGJ June 2012 FHPP Approved drain cocks are Hattersley and of the exact type as set in the valve schedule or equal and approved Drain valves are to be fully in accordance with B S 2879 Air Vent Wherever high points or other air traps occur the Contractor is to supply and fix an air release unit or bottle comprising a 75 mm length of 32 mm nominal bore pipe with 6 mm nominal bore tube to an air cock fitted in an accessible manner so that all sections are efficiently vented In all Plant Rooms and wherever else specifically noted air vents are to be of the automatic float type made by Charles Winn Ltd Type A or other equal and approved with lockshield isolating valve dischar
136. lers are installed the manufacturer shall allow for final seasonal commissioning of the chillers in conjunction with the BMS system and circulating pump design strategy Setting to work and commissioning shall be in accordance with CIBSE code R e Upon completion of the chiller installation and the final combined commissioning the manufacturer is to supply the final O amp M documentation e Johnson Controls YORK shall submit a proposed method statement for all works with this tender The Contractor will be responsible for all liaison with Johnson Controls YORK on the proposed works to ensure that all works have been scheduled and the equipment is delivered in line with the planned project programme The Contractor will be responsible for the works associated with the installation of the chillers including existing pipework modifications replacement of the valves and procurement and installation of the plant associated with the chillers 200 030 REPLACEMENT OF CHILLER NO 3 1 Prior to the replacement of any equipment during the main works it is necessary for the contractor to prepare the plantroom for the installation works The Contractor is to also liaise with the chiller Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 33 Checked SGJ Date June 2012 FHPP manufacturer to schedule the delivery dates The following preparation works prior to the installa
137. ll commence together with a site visit to monitor the on going planned preventative maintenance of the chiller installation and its performance The Contractor is to allow for seasonal commissioning to be carried out as part of the contract As part of this monitoring an energy efficiency audit shall be undertaken to ensure that the cooling system performance and the energy saving measures have been achieved ensuring that a reliable and efficient system is in operation Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 76 FHPP PART 2 BUILDERS WORK Scope of Works e Forming holes through existing walls to accommodate new services e Making good existing holes made redundant by the removal of existing services e Forming new plinths for equipment on the roof e Provide paving slabs beneath pipework supports e Removal of all rubble and waste from site e Holes Through Structure e Existing Holes to be made good e Equipment Bases e Provide temporary permanent anti vibration pads beneath pumps and temporary chiller mountings Holes through Structure Holes through the structure shall be to suit the new routes of services and equipment The approximate number of holes shall be as follows e 2 No 200mm DIA holes through internal walls e 2 No 300mm DIA hole through external walls e 1No 180mm DIA hole through external walls The Contractor shall allow for making good and a
138. loors above and below The fire barriers shall be provided to maintain the integrity of the fire compartment in strict accordance with the building layout Details of the fire barrier construction for various containment systems are covered in the relevant sections of the Specification The location of penetrations shall be clear of an access routes Any openings shall be sealed as soon as possible to avoid the ingress of dust and debris where openings need to be left open for periods of time they shall be temporarily covered and protected The Contractor shall provide a detailed drawing of every type of penetration for comment prior to construction commencing CDM Regulations All works shall be carried out after a detailed risk assessment of the works and installation drawings have been carried out for the whole of the mechanical and electrical installation All relevant documentation for the Health and Safety file shall be issued to the Bank s representative The Contractor is required to work strictly in accordance with the Contractor Code of Conduct and all relevant pre contract H amp S documents All risks wherever possible shall be designed out The Contractor is to strictly follow the working restrictions detailed under Section 2 09 Working Area amp Contractor Facilities Drawing Production The Contractor shall submit working installation and detailed drawings for review comment at a time consistent with the programme
139. ls com The Contractor shall hold a current manufacturer certificate of authorisation for supply and installation of the specified works All site operatives shall be trained to industry standard and hold current certificate of competence for installation of specified BEMS Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 64 FHPP All site operative shall hold a certificate that demonstrates competence for safe isolation of electrical circuits in accordance with the Electricity at Work Regulations 1989 The Contractor is to provide details of compliance with the Waste Electronic and Electrical Equipment Regulations 2006 All certification to be produced prior to works commencing Training Training is to be provided on the BEMS operation for site engineers and client 200 020 STANDARD REQUIREMENTS The control panels are to incorporate the standard requirements of this Clause unless specifically otherwise stated a Starters are to be provided for the motors of all equipment associated with each control panel Each DOL starter is to be contactor type complete with suitably rated HRC fuses of the Motor Starting type and thermal overloads with protection against single phasing The coils of all starters are to be rated for 24 Volts A C and all operating and interlock circuits are to be at this voltage Overloads are to be set to suit the motor A Red Trip lamp and a Gr
140. luding the extended warranty period The maintenance shall allow for attendance by the relevant manufacturers of specialist equipment which shall include controls water treatment chillers etc Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 17 Checked SGJ June 2012 FHPP The Contractor shall include in the Tender for all necessary tools equipment and materials to properly effect the maintenance of the installation to the satisfaction of the Bank and bank s representatives The Contractor shall include relevant to this clause only details of all percentage on costs required on items such as Sub Contract replacement parts plant hire etc The Sub Contractor shall provide at the commencement of the Defects Liability Period a maintenance programme for approval by the Bank s representative Further the Sub Contractor shall provide following each service visit during the Defects Liability Period and consequent thereto a report on plant and services which shall include DI Details of works undertaken 02 Plant Condition report 03 Repair recommendations This report shall be forwarded to the Bank s representative within 5 working days of the visit Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 18 Checked SGJ June 2012 FHPP SECTION 3 00 Scope of Works The named Services Contractor herein after refer
141. me pattern but of the lockshield type The isolating valves are to be Cast Iron Fully Lugged Butterfly Valves Cast iron butterfly valves for closed circuits shall be constructed to BS 5155 with a pressure rating of PN16 Castings for bodies bonnets yokes stuffing boxes and wedge shall be grey cast iron conforming to BS 1452 grade 110 All valves to be lever operated with a latch to hold the valve s Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 45 Checked SGJ June 2012 FHPP disc in the fully open and fully closed and intermediate positions To give tight shut off when closed against 10 bar pressure with the low pressure side drained Approved isolating valves or equal and approved are Hattersley and of the exact type as set in the valve schedule Flanges are to be to B S 4504 Table 6 11 wherever the manufacturer s standard range allows whilst screw threads are to be to B S P T Where valves are bolted to other items the Contractor is to ensure that flanges are compatible Double Regulating Valves The double regulating valves are to be provided as required by the Valve Schedule and in positions shown on the Drawings for regulating the water flow rate The degree of opening of the valve during commissioning is to be set on the stop on the valve to enable it to be repeated Plug to be characterised to give good regulation over the full travel of the spindle Pressu
142. monitoring Standard Warning and Alarm signalling is required Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 74 FHPP Monitoring The B M S is to monitor the following in addition to all control inputs and outputs e Common primary chilled water flow temperature on main chillers e Common primary chilled water return temperature on main chillers e Common primary chilled water flow temperature on temporary chillers e Common primary chilled water return temperature on temporary chillers e Common secondary chilled water flow temperature e Common secondary chilled water return temperature e Common primary chilled water flow rate on main chillers e Common primary chilled water flow rate on main chilled water flow Trace Heating A contactor and fused supply are to be provided in the Temporary Chiller Control Panel for the trace heating of the chilled water pipework in the temporary chiller compound There is to be an associated HAND OFF AUTO switch on the Plantroom Control Panel When at AUTO the heating is to be ON below 0 C adjustable external temperature if the chilled water pumpset is not running An Amber Trace Heating On lamp is to be lit whenever the contactor is closed 300 030 OPERATIONAL RISK MANAGEMENT Operational Risk Assessment A written operational risk assessment is to be carried out to analyse each stage of the project to identify high probabilit
143. n Contractors shall note that quotations cannot be accepted on a fluctuating price basis and shall take account of these fluctuations within his tender figure as future increases in costs shall be borne by the Contractor for the scheme 2 29 Accessibility to Plant and Equipment The Contractor shall provide marked up drawings schedules showing the sizes for all access openings required for maintenance installation etc which shall be submitted for comment The Contractor shall co ordinate and agree all such access points with the Bank s representative 2 30 Supports Hangers and Fixings Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 10 FHPP 2 31 2 32 2 33 Checked SGJ June 2012 The Contractor is to prepare and issue for comments to the Bank s representative prior to commencement of works drawings and details showing proposed methods of support including fixings to the structure All support details and locations shall show the anticipated services weights with adequate allowance for future additions The Contractor must provide all supports and fixings necessary for the works and must not assume that any brackets or supports will be provided for his use Fire Barriers and Openings The Contractor shall provide all fire barriers and sealing of openings between fire compartments internal to external openings all internal partitions walls and floors and f
144. n replacement of the third chiller New Machines e The Manufacturer will factory assemble the units with all interconnecting refrigerant piping and wiring ready for the field installation The units are to be pressure tested evacuated and fully factory charged with refrigerant and oil in each of the independent refrigerant circuits e When assembled each chiller is to be factory tested on its full thermal load and each part load minimum load e The manufacturer is to allow for the weighing of the final charge of refrigerant for the end users maintenance records e Upon completion of the off site testing to be witnessed by the Bank s representatives the manufacturer shall allow for the chillers to be discharged of refrigerant and stored in the manufacturer s facility in accordance with their recommendations e Prior to delivery of each chiller unit it shall be dismantled and delivered to site in pieces to allow installation in space restricted areas The chiller manufacturer shall allow for long term storage and protection within his tender e Once the chiller is delivered to site the manufacturer is to allow for rebuilding the chiller within the plant room positioning on suitably adapted bases refilling with oil and refrigerant and commissioning This scope shall be repeated for all three chillers e The manufacturer is to allow for the commissioning of each individual chiller upon completion of its installation When all three chil
145. ngs as recommended by the manufacturer of the expansion joints to ensure that expansion takes place in correct alignment The greatest care is to be exercised in following the maker s instructions for installation and especially for the hydraulic testing of lines containing expansion joints Anchors Rigid anchors are to be generally similar to the supporting bearers previously specified with the exception that the rollers are to be replaced by a small piece of RS channel shorter in length than the diameter of the pipe and cut to the radius of the outside surface of the pipe This RS channel is to be fixed to the supporting brackets and the pipe rigidly anchored by means of U bolts bent to the radius of the outside surface of the pipe and clamped in position with a locknut on the underside of the flange of the supporting bracket The supporting bracket is to be suitably braced and fixed to the structure so as to withstand rigidly the maximum load imposed upon it The Contractor is to supply the Structural Engineer with details of the loads on each anchor bracket and obtain his approval to the design and location of each bracket The anchor is to be located approximately mid way between the points at which provision for expansion is made Testing and scouring Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 61 FHPP Upon completion and before insulation burying or encasing of each
146. ny re decorating required for making good around all new holes Equipment Bases The Contractor shall allow for extension of the existing bases for the new chillers in the chiller plant room which shall be cast onto the existing structure The sizes for the bases are to match the requirements of the new chillers The Contractor is to allow for new base for the temporary chilled water pump at the mezzanine level The Contractor is to allow for temporary tyco pad mats to protect the existing pavement tiles externally Temporary Chiller Compound The Contractor is to allow for building an enclosure for the temporary chiller compound as per the tender drawings The enclosure is to be also provided with a crash deck above the temporary chiller suitable for continual chiller use without affecting performance On the location shown on the tender drawings the Contractor is to allow for modifications to the generator room louvre section to enable temporary chiller chilled water pipework routing The existing louvre is to be modified and prefabricated dummy louvre section shall be installed Y 00 Enquires E4340 4 0 FHP SpecificationsM 8 Combined M amp E E4340 MAE Technical Specification docx 77 FHPP around the new temporary chiller pipework Once the whole replacement works are complete and the Contractor remove the temporary chiller and the chilled water pipework The Contractor is to also allow for sealing of the holes through the structure an
147. of 50mm width lever arch type shall be used where large quantities of information are to be held in the binder Wherever possible papers except where shown below should not be larger than International A4 The following descriptive elements should be provided e Title Page showing the following Client Company Name Title of Installation Date of Completion Consultants Main Contractor Scheme and Specification Numbers Section O O O O O O O e Description of Design Intent and the Engineering Installations including specific components which may affect its operation Sufficient information should be provided to enable engineering systems to be initially started up prior to commissioning taking place in addition to the continuing operation and maintenance e Hazardous substances used shall be clearly identified and safe methods of handling and operation clearly documented to ensure compliance with statutory requirements e Lubrication Details and Procedures Summary Manufacturer s Service Manuals and Spares details of ordering e Operational instructions describing all features and fully explain setting to work instructions and line diagrams Safety features including emergency shutdown buttons e Schedules of Mechanical Equipment and Fittings e Typed operating procedures for the use of Client s technical or non technical staff Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specifica
148. of these works the Contractor is to test the system as described above before bringing the system back into operation Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 28 Checked SGJ June 2012 FHPP 500 020 DISCONNECTION OF HEAT EXCHANGERS Similar to the previous operation to enable disconnection of the existing heat exchangers on the chilled water side it is necessary to isolate and drain down the relevant section of the system during weekend shutdown By using the existing isolating valves on the heat exchanger side of all existing chilled water pumps and chillers the chilled water system shall be isolated and drained down locally The existing motorised valve is to be removed and replaced with new butterfly isolation valve The existing connections to the heat exchanger shall then be cut off and new blank flanges installed Upon completion of these works the Contractor is to test the system as described above before bringing the system back to operation 500 030 INSTALLATION OF THE BYPASS The installation of the chilled water bypass is to be priced as an additional option as it yet is to be determined if a new bypass is to be installed or the existing bypass is to be reused Option 1 Existing Bypass If an existing bypass is to be reused the Contractor is to allow for replacement of the existing double regulating valve on the chilled water bypass and allow for an ins
149. oning of the whole installation under the instructions of the new schedules The testing and commissioning procedure is described in detail in a separate section of this specification Builders work The Contractor shall provide builders work for the new bases for the new chillers pumps etc as detailed in a separate Builders work section In addition holes for pipework through walls etc shall be formed and the hole made good afterwards Where existing pipework is stripped out any redundant holes through walls etc shall be made good The builders work shall also include for the modifications of the existing Motor Control Centre enclosures to match the proposed electrical and automatic control modifications The Contractor shall provide Builders work drawings for approval prior to the works being carried out Electrical Services The Contractor shall provide new electrical services to feed the new temporary chiller and pumps modify the existing electrical services to the replacement chillers and replacement of isolation and current devices within the existing Motor Control Centres Automatic Controls 20 Checked SGJ June 2012 FHPP A new controls system is to be provided for the operation of the temporary chiller this shall interface with the existing Trend BMS to pick up the failure alarms The new chillers are to be controlled from the existing Trend BMS controls system which is to be modified to match the operation of the ne
150. ontract and Drawing Review Procedure but neither such review nor the Consulting Engineers stamp and signature shall relieve the Contractor from responsibility for Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 13 FHPP 2 35 2 36 2 37 2 38 Checked SGJ June 2012 i any deficiency or inaccuracy or non compliance with the Contract or of the Specifications ii any error in the proper fixing of the Contract Works iii the necessity of providing any work required by the Contract or the Specifications not indicated on the Working Drawing when reviewed by the Bank s representative In any case in which a Working Drawing is stamped Status C by the Consulting Engineers the Contractor shall as soon submit an amended drawing or sample the Bank s representative Method Statements Access Method Statement The Contractor shall ensure that when any system is to be isolated and modified a method statement is produced setting out the processes involved and the time scales The Contractor shall also provide method statements relating to the delivery of each major plant of equipment including proposed access storage and positioning The method statement shall be submitted to the Bank s representative and shall be subject to Approval by the Project team as stated in clause 2 33 Test and Commissioning Certificates The Contactor shall provide test certificates
151. or the chiller is part of an Appendix F Main Chillers The main chillers are to be 3 No variable speed drive 2500 kW water cooled chillers YKHDFVP85ENG as manufactured and supplied by Johnson Controls YORK A detailed technical specification for the chiller is part of an Appendix F 300 020 SYSTEM PUMPS General All moving parts are to be guarded 100 mm dial altitude gauges are to be supplied and installed in all suction and discharge connections of all pumps They are to be installed at the same height throughout at least 2 pipe diameters away from the nearest pipe fittings and pump flanges if possible Gauges each to be complete with brass ring syphon and gauge cock The face of each gauge is to be marked with a red line indicating the normal static head as measured on site Isolation butterfly valves and tied flexible connections are to be installed on both suction and discharge of each pump or twin pump Where shown on the drawings a strainer is to be installed on the suction side of each pump and non return valve on the discharge The discharge part of the pump is to be complete with double regulating valve and commissioning station Self sealing test plugs as specified elsewhere are to be installed on the side of the pipe at the suction and discharge of each pump set again at least 2 pipe diameters from the nearest pipe fittings and pump flanges if possible All pumps must be installed strictly in accordance with the manufact
152. ors shall be sized in accordance with BS7671 2001 Cable Trunking and Trays The ends of protective conductors which are to be connected to the earth bar shall be terminated in a crimped cable socket and bolted separately to the earth bar using brass bolts nuts and washers with locking arrangements Each connection to the earth bar shall have an engraved label fixed to the cable Existing bonding in the area of works shall be checked for compliance and modified were necessary Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 44 Checked SGJ June 2012 FHPP SECTION 6 00 Chilled Water Pipework and Fittings PART 1 SYSTEM OBJECTIVES 100 010 PERFORMANCE OBJECTIVES Install set and commission a fully functional chilled water system with all pipelines and ancillaries as set out in this specification PART 2 SPECIFICATION CLAUSES SPECIFIC TO THIS PROJECT 200 010 CHILLED AND CONDENSER WATER PIPELINES The Contractor shall supply and install all pipework and fittings as indicated on the drawings and described in the specification All new chilled and condenser water pipework shall be installed in heavy grade steel tube to BS 1387 up to 150 mm and AP15L Sch20 Welded tubefor the pipework above 150 mm with welded joints and fittings as detailed in PART 3 GENERAL REQUIREMENTS Where required unions shall be used on pipework up to and including 50mm whilst 65mm and above shall be
153. osed to operate the pumps on the number of operating chillers ie if only one chiller is running only one pump is in operation During the uploading process it is proposed that the control system would first give a signal to the pump to increase the flow rate through the operating chiller which would make the water flow switch before the second chiller energises Similarly this is to be followed in reverse order during the unloading process Once a second chiller is in operation another pump is to be brought into operation The pump sequencing is to be set in a manner so they maximise their efficiency The sequencing of the pumps is to be set up so that they rotate weekly to a new lead pump The pumps are to be set in such manner that when there is no demand for the cooling load the pumps are to maintain a minimum flow required by the chiller through a chilled water bypass The chilled water primary pumps are each to be provided with a HAND OFF AUTO switch Each pump is to have a DOL starter as set in Standard Conditions The chilled water pumps and the chillers are to be shut down immediately without pumpset run on if a pressure alarm is relayed from the pressurisation unit The pumps to have dpt differential pressure transduces fitted across the flow and return connections for BMS fault monitoring Each chiller and the pump are to be mutually interlocked so that e The chiller is to shut down if the pump s starter does not signal that
154. ought steel sockets which on completion of the test are to be plugged and sealed by welding around the plug The Contractor is to include for all drain valves and temporary works necessary to flush out all sections of systems thus ensuring that the flushing process is effective through all parts of a section of a system This work will be deemed to include looping of flow and return pipework where heat emitters equipment etc are not installed The recommendations of C I B S E and B S R I A relating to flushing procedures and chemical biocide dosing are to be noted and strictly followed to avoid subsequent problems arising from the water being insufficiently clean and sterile The test pressure to be applied to above ground water pipework is to be 1 5 times the working pressure or 7 bars whichever is the greater or as may be later specified for particular special services Underground pipework is to be tested at twice the working pressure Other pipework is to be tested to the pressures recommended in the H V C A Guide referred to above Each isolating valve on the system is to be tested for tightness immediately prior to installation Any valve not found tight is to be dismantled cleaned and faced as necessary until complete tightness is obtained The Contractor is to issue to the Consulting Engineers a Certificate of Test for each section tested signed by all test witnesses The Contractor is to supply and fix as necessary all t
155. peration The main electrical power supply to each chiller is to be separate from the Plantroom Control Panel and is to be T P amp N The operation of each chiller is to be initiated by closing voltage free contacts in the Control Panel and are to be stopped by opening the same contacts A HAND OFF AUTO switch for each chiller is to be incorporated on the Control Panel Each chiller incorporates a LON communication card The B M S is to be provided with a compatible device in order to monitor the chillers operating conditions on the B M S supervisor When operating the chilled water temperature is maintained at the required setpoint by the chiller s integral controls The leaving water setpoint is to be automatically re set via the LON data link on a schedule as follows The base setting shall be as follows Chilled Water Flow Temperature 6 7 deg C Chilled Water Return Temperature 13 3 deg C A minimum flow rate through chiller evaporator 25 5 litres s Base flow rate through chiller evaporator 90 5 litres s Base flow rate through chiller condenser 90 5 litres s all settings to be fully adjustable Chillers are to be staged to maintain as close as possible a 40 to 60 load on the chillers where their COP is most favourable The chillers are provided with variable speed drives that would turn down the chillers based on the temperature difference The TREND system is to monitor the chillers variable frequency drives and send
156. pport bases shall be cleaned extended as required and prepared for delivery of all new equipment e New pumps will be installed together with the associated accessories while the new valves would provide isolation from the operational system e New chiller will be delivered to site in parts due to access restriction and will be reassembled in plant room by Johnson Controls YORK and prepared for connecting by the contractor e The Contractor is to install new 2 port control motorised valves on the chilled and condenser water side along with temperature pressure gauges sensors flow switches and other accessories generally as detailed on the relevant tender drawings e Having the primary system isolated via the new isolating valves the chiller connections shall be reassembled and connected to the existing system e All essential electrical connections will be installed to the pumps and chiller during the duration of the above works Upon the completion of the above works the new controls for the pumps and chiller shall be incorporated into the existing BMS control system The variable speed function on the new pumps shall be disabled and the pumps shall work on fixed speed only until all three chillers are replaced New chiller and pumps shall be programmed to match the operation of the existing system After the chiller has been charged with oil and refrigerant the valves would open and be made available for refilling of the system The s
157. r is to be introduced to the system The temporary chiller provided by EBRD is to be installed during the enabling stage so when the further works are undertaken on the primary chilled water system the secondary chilled water system will remain in operation The temporary chiller is to be connected to the system via a modified existing buffer vessel connection on the secondary circuit low loss header in the chilled water plantroom The whole of the system is required to be shut down during these installation works The planned shutdown can be undertaken in a maximum length of one weekend and shall not start sooner than 12 00pm on Saturday and end at 12 00pm on Sunday The Contractor is required to produce a method statement on the proposed staging of the works as set out in the General Conditions of this specification 200 010 SITE PREPARATION Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 23 Checked SGJ June 2012 FHPP The Contractor is to isolate the secondary system by using the existing isolating valves on the primary chilled water flow and return connections before the low loss header and the isolating valves on the chilled water flow from the secondary pumps Once the section of the secondary circuit is isolated the system is to be drained down The existing buffer vessels in the mezzanine plant room are also to be drained down 200 020 MODIFICATIONS TO THE EXISTING SYSTEM
158. r pipes against freezing To provide the appropriate level of frost protection to certain sizes of pipes it may be necessary to provide additional heat to the system for example by thermostat controlled water circulation of the water and or trace heating All pipework to be insulated with minimum thickness 25mm phenolic foam internally and 40mm phenolic foam externally where the pipework is trace heated Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 54 FHPP 200 040 SUPPORT AND HANGERS All pipes are to be supported where shown on the drawings and elsewhere as necessary particularly within 150 mm on each side of all changes in direction and everywhere at intervals not exceeding the following a Mild Steel Pipes Nominal Bore Vertically Fixed Horizontally Fixed Metres Metres 15mm 2 5 1 8 20 mm 3 0 1 8 25 mm 3 0 2 1 32 mm 3 0 2 4 40 mm 3 5 2 7 50 mm 3 5 3 0 65 mm 4 5 3 4 80 mm 4 5 4 0 100 mm and above 4 5 4 0 b Copper Pipes Diameter Vertically Fixed Horizontally Fixed 0 d Metres Metres 15 mm 1 2 1 0 22 mm 1 2 1 0 28 mm 1 8 1 2 35 mm 1 8 1 2 42 mm 2 5 1 8 54 mm 2 5 1 8 76 mm and above 3 0 2 5 c Plastic Pipes Diameter Vertically Fixed Horizontally Fixed od Metres Metres Up to 50 mm nominal 1 2 1 1 d Generally Steel pipes of 80 mm nominal bore and under and copper pipes of 76 mm o d and under having an operating temperature less than
159. r purger is to be installed on the low loss header A flanged drain valve is to be also installed after the isolating valves to enable the buffer vessel section of the system to be drained down in the plant room during further works 200 030 FILLING AND TESTING OF THE SYSTEM Upon completion of these works the system shall be refilled vented tested and dosed while eliminating all air using the new purging point in the system The buffer vessel circuit is to remain completely isolated and empty PART 3 POST WEEKEND WORKS normal working hours During these works it is intended that the installation of the temporary chiller be completed including electrical connections building the temporary chiller enclosure and the controls modifications so no future shutdowns of the IT rooms would be required 300 010 INSTALLATION OF TEMPORARY CHILLER The works under this part shall include for installation for the following e Installation of the new temporary chiller chilled water pipework from the chilled water plantroom Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 24 Checked SGJ June 2012 FHPP e Installation of the new circulating pumps on the temporary chiller chilled water pipework e Installation of the new electrical connections for the temporary chiller e Installation of the 250 kW Johnson Controls YORK air cooled chiller externally in the location shown on the tend
160. rbished as a part of EBRD own maintenance team works before the enabling package has taken place 300 030 PRESSURISATION UNITS The existing pressurization unit for the chilled water system is located in the 13 floor roof plantroom The existing unit is Worthington Simpson packaged twin pump pressurisation unit with expansion vessel The unit is to be retained and the connections to the unit are to be modified so that the secondary circuit and the temporary chiller system would be pressurised the same system 300 040 COOLING TOWERS The existing cooling towers are located in the 13 floor plantroom and are 4 cell air cooled open circuit evaporative induced draught flow type incorporating fan motor and pan water level controls The cooling towers are manufactured by Heenan Marley cooling Towers Ltd The system serves the water cooled chillers with current condenser water flow temperature of 23 8 C It is intended to retain the system operation as existing however in order to make the most of the new chillers and new refrigerant the temperature set point on the outlet water temperature is to be changed from 23 9 C to a variable figure which at minimum would be 13 5 C The temperature set point is to be set so it varies with the external wet bulb temperature 300 050 BUFFER VESSELS The two existing buffer vessels are installed on the primary side of the 3 port secondary mixing valve and are each sized at 5000 litres The buffer vessels
161. re drop flow curves are to be provided for all valves installed Approved double regulating valves are Hattersley and of the exact type as set in the valve schedule or equal and approved Cast iron double regulating valves shall be constructed to BS 5152 with a pressure rating of PN16 be of the oblique pattern with characterised disk bronze trim bolted bonnet and bolted gland Castings for bodies bonnets yokes and disks shall be grey cast iron conforming to BS 1452 grade 220 Valves shall incorporate a lockable double regulating device and position indicator Pipe connections shall be to BS 4504 Metering Stations Metering stations are to be provided adjacent to every double regulating valve except those with integral flow measurement tappings and those in the by pass connections of 3 port valves and in any other locations required by the Specification and or shown on the Tender Drawings for measuring water flowrates Each metering station is to be supplied with two test plugs complete with captive blank safety caps to obtain a pressure drop signal The pressure drop flow curves are to be provided for all metering stations installed Metering Stations Gunmetal screwed body 50 mm and under Metering Stations Stainless steel for connecting between flanges 65 mm and over Approved metering stations are Hattersley and of the exact type as set in the valve schedule or equal and approved The Contractor is to ensure that straight
162. rect replacement The electrical contractor shall also install new local isolation devices adjacent each pump as detailed on the electrical services drawings The cables feeding from the MCCB s shall be retained and tested at the time of modification to the MCC panel refurbishment as the overall load on the panels will not increase as the installation replacement of pumps is carried out Due to the physical constraints within the chiller room the frame of the existing MCC s would have to be retained and new switchgear installed in to this frame as a direct replacement of existing switchgear as the chiller and pump replacement takes place It is thought at this time that modification to existing busbar and frames internally may be required to enable new switchgear to be installed Replacement of the main incoming device in each MCC would require a full shutdown of the pumps fed from each panel and thus disable the chillers served by the pumps this could be considered to take place when pumps are being replaced with Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 41 Date Checked SGJ L June 2012 FHPP careful attention to the location of the panels in relation to which pumps are being replaced and the logistics and planning needed to carry out the replacement Cables emanating from the MCC s shall be tested as the pumps are replaced to establish their condition but it is not
163. red to as the Contractor shall be responsible for the supply delivery installation testing and commissioning of all of the mechanical and electrical installation works as shown on the tender drawings and described in this specification The scope of works shall be as follows 3 01 Site preparation The first phase of the chiller replacement work would involve site preparation that would enable the actual equipment replacement The works under this part involve but are not limited to the following e Site preparation e Freezing of the primary chilled water pipework and installation of the new main isolating valves on the chilled water side e Modifications to the secondary chilled water circuit and existing low loss header e Modifications to the existing buffer vessels e Installation of a new temporary chiller chilled water pipework and circulating pump set and temporary electrical and control wiring e Condenser water drain out and replacement of the existing isolating valves e Isolating of the existing heat exchangers e Chilled Water Bypass o Option 1 Modification of the existing primary chilled water by pass to be priced as optional item o Option 2 Installation of the chilled water by pass on primary chilled water run to be priced as an optional item e Testing and Commissioning of the temporary chilled water system 3 02 Installation of the Temporary chiller As already mentioned in order to eliminate the risk of t
164. responsible for installing a 315 Amp TP amp N isolator within the generator room for connection of the temporary chiller This shall be located adjacent to the northerly facing acoustic louvres mounted directly to the wall Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 MAE Technical Specification docx 25 Date Checked SGJ L June 2012 FHPP The isolator shall be fed via LV switch panel 2B The supply from switch panel 2B shall be taken from way 18 utilising the MCCB installed previously by others The electrical contractor shall install a 95mm XLPE SWA LSF cable and auxiliary 50mm CPC from way 18 of switch panel 2B to the temporary chiller 315 Amp TP amp N isolator All cabling shall be installed on the existing containment where possible Any additional containment required shall be installed to match the existing and as illustrated on the scheme drawings As part of a pre enabling works package the moulded case circuit breakers installed within the main switch panels are to be replaced by others this shall enable connection of the new temporary chiller LV supply from the HV LV room through to the generator room The MCCB associated with the temporary chiller shall be set as illustrated below 320A NS400 N STR 43 ME Long time current lo lr Long time delay tr lo 1 Ir 0 93 50 J J Use IDML setting TII gg y p De rated setting Rating plug Ir Special tr ts ne 50
165. rking Drawing Review Procedure After the submission of drawings for approval they shall be returned to the Project Administrator indicating Status A Status B or Status C as described in the Drawing Review Procedure set out below Upon return of these drawings the Contractor shall take such action as is required by the Drawings Submission Procedure contained in the Specification The terms Status A Status B and Status C referred to shall bear the following meanings Status A The Contractor may proceed to authorised fabrication manufacture and or construction providing that the work is in compliance with the Contract and the Specifications Acceptance of the work will be contingent upon such compliance Status B The Contractor may proceed to authorise fabrication manufacture and or construction The Consulting Engineers final acceptance of the work will be contingent upon the compliance with any notations on the Drawings made by the Consulting Engineers and upon compliance with the Contract and the Specification Status C The Contractor shall not authorise work to be fabricated manufactured and or constructed The Contractor shall be responsible for providing prints of all working drawings stamped Status A or Status B and for their distribution Bank s representative The Bank s representative shall review the Working Drawings to satisfy himself that they are in general accordance with the C
166. s and new isolating valves and double regulating valve shall be installed completed with blank flanges The chilled and condenser water connections to the chiller No 3 1 would be disconnected back to the chilled water and condenser water headers and new isolation valve and double regulating valves incl commissioning station would be installed on the connections Once all of the above works are completed the Contractor is to ensure that the newly installed valves are in a closed position Once the above scope of works are completed the system consisting of the remaining two chillers is to be topped up purged of all air and the relevant section of the system is to be pressure tested Upon completion of testing the system is to be energised and the Contractor is to test its operation to ensure that the system is operational If no problems are observed the works can be completed by opening the primary and secondary circuit whilst turning off the temporary chiller Post weekend shutdown normal working hours During the post weekend works the Contractor is to closely coordinate with the chiller manufacturer to ensure completion of the following works e During the post weekend works the existing pumps and chiller will be dismantled removed and disposed of from the site Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 34 Date Checked SGJ June 2012 FHPP e Existing su
167. s are also to be auto dialled via the modem to the remote monitoring station Y 00 Enquires E4340 4 0 FHP SpecificationsM 8 Combined M amp E E4340 MAE Technical Specification docx 68 FHPP h Spare Ways Each Control Panel is to have two spare T P 8 N outgoing ways fitted with 32 Amp H R C fuse holders and Neutral Links i Valve Exercise Where a B M S system is specified the outstation strategies are to be programmed to automatically exercise all control valves once per week to prevent sticking Each control valve is to be driven fully open and fully closed twice during the exercise The valve exercise routine is not to initiate any other automatic functions related to the valve position The routine is not to be carried out on plant that is running under normal automatic control The routine is to be carried out at a time when the minimum amount of plant is running j Pipe Line Equipment All pipe line equipment associated with the water services in the building is to have a normal pressure rating no less than 10 0 bar g PART 3 CONTROLS DESCRIPTION SPECIFIC TO THIS PROJECT 300 010 EXISTING CHILLERS STRATEGY CONTROL The existing system operation is controlled and maintained by on site TREND engineer The chillers operate in stages trying to match the required cooling loads The controls have got 4 different stages where the chillers are operational as follows Stage 1 One small chiller operational Stage 2
168. s self recharging To have two ON and OFF settings for each day Emergency Stop Facilities Each control panel is to be provided with an integral twist to reset Red emergency stop button clearly identified The button is to drop out a relay in the control panel which is to stop all plant controlled from that control panel and where the outgoing power supply is derived from the control panel to disconnect all supplies greater than 50 Volts Attention is drawn to the requirements of the I E E Regulations and the European Machines Directive in respect of wiring of emergency stop circuits Additional remote emergency stop button s are to be provided within any Plantroom adjacent to each entry and are to be wired to any control panels controlling equipment plant in the relevant Plantroom to provide the same functions as the stop button described above Alarms and Warnings Alarms and Warnings are to be relayed to the B M S supervisor Alarms are for occurrences which require immediate attention namely e Motor or Equipment trips where there is no standby or where the standby is also tripped e Any dangerously low or high room or pipe temperatures e Any other items specified later e Warnings are for less urgent occurrences namely e Motor or Equipment trips where there is an operational standby e Any other items specified later The status of all alarms and warnings are to be recorded on the P C s hard disc Alarm
169. t less than six times the nominal bore of the pipe while branches are to be connected to gunmetal tees All bends whether prefabricated or made on Site are to be annealed before fixing in place Where light gauge copper tube to B S 2871 Part is specified the tube is to be manufactured from de oxidised arsenical copper to B S 1174 Light gauge copper tubes and fittings is to be installed in accordance with the manufacturer s directions and using any special tools or fluxes etc recommended The use of old or re drawn copper tube will not be permitted Where it is necessary to connect light gauge tube to iron or gunmetal valves or apparatus straight through adaptors are to be used where the valve or apparatus is screwed and flanged adaptors are to be used where the valve or apparatus is flanged Flanges are to be to the relevant B S Table installed as described elsewhere Pipework generally All pipework is to be delivered to site in manufacturers random lengths and straight runs are to incorporate full lengths No piecings of short cuttings or the use of long screw connections and backnuts will be permitted All pipework will be left free from excessive tool marks distortion of section or other defects Pipe jointing is to be non toxic used with the minimum of P T F E tape or hemp All surplus hemp jointing is to be cleaned off threads and fittings before it hardens Reducing pieces are to be eccentric unless otherwise specified
170. tallation of new metering station Option 2 New Bypass The new chillers variable flow system arrangement requires a by pass installed on the primary chilled water pipework after the pumps to ensure that a minimum flow on the chillers is maintained at all times The primary chilled water pipework bypass is to be installed during a weekend shutdown The bypass is to be completed with an isolating valve and a 2port motorised valve The by pass shall be closed until the chiller replacement scheme is complete and the new system commissioned The above works are to be quoted as on additional option as there is a possibility to reuse an existing bypass on the existing chilled water system 500 040 ALTERNATE CONNECTION TO THE PRESSURIZATION UNIT To avoid the need for a new pressurization unit during periods when only the temporary chiller is in use it is proposed to use the existing pressurization unit which is located on the roof but with a new connection to the secondary CHWS circuit A new connection will be run from the existing system fill line and connected to the existing secondary circuit having removed the existing automatic air eliminator The new connection will incorporate isolation valves and pressure switch for automatic control of the pressurization unit Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 29 Date Checked SGJ June 2012 FHPP SECTION 5 00
171. tallations by the Bank Prior to Practical Completion of each Section of the Works the Bank reserves the right to have beneficial use of the Services installations premises or any portion thereof subject to agreement with the Contractor such Agreement not to be unreasonably withheld 2 18 Co ordination It is essential and the responsibility of the Contractor to liaise fully with all other trades and specialist manufacturers supplies to ensure full co ordination of installations prior to any installation commencement to avoid any misinterpretation which may occur between disciplines and which may impede progress of works on site 2 19 Liaison Between Services Contractor and Manufacturer The Contractor is to ensure that the closest possible liaison is made between other Sub Contractors and Manufacturers The Contractor is to ensure that all aspects of the works whether mechanical electrical control or structural are closely co ordinated as no extra costs will be accepted for any works required due to non compliance with this Clause The Contractor shall ensure that where necessary the manufacturer and equipment suppliers receive copies of the working and installation drawings and compete information to ensure the above is fulfilled Notwithstanding the fact that EBRD are purchasing the temporary and permanent chillers direct the Contractor shall be responsible for and liaise fully with the chiller manufacturer to provide all necessary
172. temporary chiller once the temporary chiller is delivered and positioned in the compound The Contractor is to also allow for the supply of temporary base for the temporary chiller The base is to be used purely for ensuring that the floor is in one level and to protect the existing tiling The temporary chiller is to be provided with its own spring mounts Any crash deck installed is to not impair the operation of the temporary chiller Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 22 Checked SGJ June 2012 FHPP During these preparation works the Contractor is to also allow to measure and manufacture of a dummy louvre which is to be used as a replacement for the existing attenuation louvres in the area where temporary chiller chilled water pipework and cabling is to be installed 100 020 INSTALLATION OF THE TEMPORARY CHILLED WATER PIPEWORK Temporary chiller chilled water pipework shall be installed from the chilled water plantroom through the generator room ready for connection through the generator room louvres during these works The chilled water pipework is to be installed with all associated valves incl thermal insulation in the position as shown on the detailed tender drawings and in accordance with this specification The pipework is to be finished with flanges at the end of the generator room before the attenuation louvre wall The Contractor is to include for all builders
173. the available condenser surface increases in comparison to the load demand and therefore the part load efficiency exceeds the full load efficiency Specifically designed for low sound operation Most major cities today have rigorous noise control legislation and many applications such as medical educational hotels and theatres are extremely noise sensitive In such situations a chiller must not only meet sound level requirements during the day when background noise levels often mask chiller sound levels but also during evenings and at night when legislated levels are more stringent and background levels are diminished Johnson Controls Ltd Unit 1 Russell Square Hornsby Way Basildon Essex SS15 6TA Telephone No 44 0 7798 581063 Email David A Wilson jci com Johnson WK Controls The TEMPO LS chiller has been specifically designed for low sound operation to satisfy these varied requirements by incorporating slow speed fans and arranging all the compressors together in one location and enclosing them in an acoustically treated chamber Suits locations where space is restricted TEMPO has a compact design to suit locations where space is restricted Fast and easy installation TEMPO has a single electrical power connection and optional factory fitted water circulating pump s water filter and flow switch to provide fast and easy installation Buffer tank not normally required TEMPO requires a minimum water volume to s
174. the level of information provided is lacking or indeed the Contractor does not rectify any issues on the second attempt then the project team reserves the right to financially contra charge the Contractor with any abortive time incurred reviewing or rechecking information 01 Working Installation and Detail Drawings Dimensioned layout and fabrication drawings Fully detailed arrangements of plantrooms etc Detail drawings of distribution support systems and connections to plant and equipment Power and control wiring diagrams Drawings showing the work of Specialist Contractors and Manufacturers Manufacturers drawings generally The Contractor shall submit drawings as required to suit the construction programme The drawings shall be progressed to a level sufficient to allow full coordination with other services and the information included is sufficient to permit proper installation of the works Drawings prepared for each area shall be produced to allow a minimum period of two weeks for consideration by the Project Team who may wish designs to be amended or the addition of further details or items of clarification Work on site shall not commence until each drawing has been submitted for comment and formally issued in accordance with this specification 02 Builderswork Drawings Equipment base details where required Major holes through structures above 500mm DIA Primary support steel requirements Ac
175. ther factors applying at the end of each section The said schedule accompanying the Contractors tender shall follow the same headings as those laid down within the Tender Summary Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx FHPP 2 1 Checked SGJ June 2012 The net rates in the said Schedule shall be used for measurement and valuation of any alteration addition to or omission from the Contract Works authorised by the Bank s representative Where it is not practical to apply the net rates in the manner aforementioned such alterations additions and omissions as ordered shall be valued at rates or prices as may be agreed with the Quantity Surveyor and or the Consulting Engineer in accordance with the provisions of the Main Contract Variations The Bank s representative shall be allowed to issue written instruction to vary the Contract Works in accordance with the Main Contract Upon receipt of an instruction a fully detailed priced estimate for such variation shall be submitted via the Bank s representative to the Quantity Surveyor and Consulting Engineers within seven days inclusive of non working days The value of all variations to the Contract Works shall be determined by the Quantity Surveyor in accordance with the provisions of the Main Contract 2 12 Provisional Sums Provisional Sums shall mean a sum to be spent or not spent at the Bank s
176. tion Schedule of Quantities and Rates The Contractor shall provide within ten working days of asking a priced schedule detailing the manner on which the tender for the Contract Works has been based This Schedule shall give DI Quantities of all items the net cost the total net cost per item and the total net cost of all materials 02 A schedule of labour hours allowed for the work together with the basic hourly rate and the total basic labour cost for the contract 03 The overheads and profit margin for the contract Totals for 01 02 and 03 when added shall be equal to the contract price excluding provisional sums and Main Contractor s discount The said Schedule shall show in detail the quantities prices and extensions used in the calculation of the Tender and the Contractor shall accept responsibility for the accuracy of any quantities and extensions contained therein and the said Schedule shall balance with each item of the Tender Summary submitted with the tender If the Quantity Surveyor Engineer when examining the priced Schedule of Quantities and Rates supporting the Contractor s Tender discovers any obvious errors in arithmetic the Contractor will be given details of such findings and shall be required to confirm or withdraw his Tender within a reasonable time scale The Contractor shall identify the amounts for preliminaries overheads design fees profits and Main Contractor s discount along with any o
177. tion processes are to be repeated for each chiller replacement as follows Preparatory works e Scaffolding and task lighting shall be installed where necessary e Where the works on the existing pipework are going to be undertaken the insulation shall be stripped off and cleared from site e The contractor shall measure for all stool pieces and procure all necessary components i e valves flanges etc e During the preparatory works the Contractor shall test the functionality of the temporary chiller and ensure that the secondary system runs without any complications e Any additional methods of cooling for the non essential cooling loads shall be prepared and tested Weekend Shutdown During the first weekend shutdown of the main chiller replacement works the essential IT cooling loads shall be covered by the temporary chiller The primary circuit would be isolated from the secondary using the existing primary isolating valves before the low loss header The isolating valves on the temporary chiller connection would be opened and the main circuit valve closed The Contractor then would energise the temporary chiller Once the temporary system is running both the primary chilled and condenser water circuits would be isolated using the new isolation valves and drained down in the whole plant room The pumps that serve chiller No 3 1 are chilled water P3 1 and condenser water P3 4 pumps These shall be disconnected back to the main header
178. tion docx 15 Checked SGJ June 2012 FHPP e Inventory of equipment supplies showing details of make model type serial number rating date of manufacture where known installation date location etc This item shall include a schedule of all luminaire types installed e Repair and maintenance instructions for equipment installed including guidance on assembly and dismantling safety special tools and maintenance equipment test e Instruments and any spares provided under the contract e Maintenance Instructions in chart form showing sequencing and timing of essential maintenance e Applicable catalogues sources of supply colour codings and recommended holdings of spares e Warranties and insurance test certificates where applicable e Details of Emergency Call out Service with telephone numbers of personnel available e Completion Certificate and test certificate to BS7671 e All relevant British Standard Certificates and specialist certificates e Commissioning and test results All Operating and Maintenance Manuals shall include the necessary safety information and details in accordance with the Construction Design and Management Regulations related to operating and maintaining the completed systems The Contractor shall include for all costs and expenses in this context and should indicate the item separately in the Tender Summary It shall be a condition of the submission of the Tender that should the Consulting
179. tored as the existing metering in the building Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 26 Checked SGJ June 2012 FHPP Testing and Commissioning Upon completion of the works the system shall be refilled vented tested and dosed after eliminating all air The buffer vessels shall be refilled Subsequently the pump and the chiller shall be energised and commissioned to the design flow rates Once the system is commissioned the isolating valves on the temporary chiller chilled water flow are to be returned to the closed position and the isolating valve on the chilled water flow pipework to the buffer vessel is to be left open this will enable circulation around the buffer vessel circuit using the circulating pump and complete isolation of temporary chiller PART 4 SECOND WEEKEND SHUTDOWN OF PRIMARY SYSTEM The second weekend shutdown is scheduled to enable the Contractor to undertake works on the primary circuit and to replace the existing isolating valves on both the primary chilled water flow and the return pipework During these works the essential IT cooling loads will be covered by the temporary chiller The Contractor is to test the functionality of the temporary chiller and ensure that the secondary system runs without any complications prior to these works As the temporary chiller only covers essential cooling loads the Contractor is to ensure that the Bank s
180. treatment storage and bulk containers shall be rationalised and if they are identified as non essential by the Bank s maintenance team they shall be relocated or removed from site The Contractor is required to closely collaborate with the site maintenance and building management team to establish in detail all the equipment that is to be moved and to also establish new fixing positions for any relocated plant The Contractor is to also allow during this period preparation of the existing pipework for the future works and shall strip off and dispose of all existing insulation as necessary where the pipework is to be amended Due consideration is to be given to minimising the potential for condensation to form on this pipe Generator Room The Contractor is to allow for clearing of the site in the vicinity of the existing attenuation louvres where the installation of new pipework is to take place as identified on the tender drawings Temporary Chiller Compound The Contractor is to allow for preparation of the temporary chiller compound The works should include for building a temporary chiller enclosure to provide a secure area and to limit the noise breakout of the temporary chiller A site adjacent to the EBRD building and the temporary chiller compound is currently being refurbished and is a building site To prevent any accidental damage from the site goods lift the Contractor is to allow for a suitable crash deck to be installed above the
181. turning off the temporary chiller Post weekend shutdown normal working hours During the post weekend works the Contractor is to closely coordinate with the chiller manufacturer to ensure completion of the following works e The existing pumps and chiller are to be dismantled removed and disposed of from the site e Existing support bases shall be cleaned extended as required and prepared for delivery of all new equipment e New pumps will be installed together with all associated accessories while the new valves are providing isolation from the operational system e New chiller is to be delivered to site in parts due to access restriction and will be reassembled in plant room by Johnson Controls YORK and prepared for connections by the contractor e The Contractor is to install new 2 port control motorised valves on the chilled and condenser water side along with temperature pressure gauges sensors flow switches and other accessories generally as detailed on the relevant tender drawings e Having the primary system isolated via the new isolating valves the chiller connections shall be reassembled and connected to the existing system e All essential electrical connections will be installed to the pumps and chiller during the duration of the above works After the chiller is charged with oil and refrigerant the valves would open and made available for refilling of the system The system is to be vented pressure tested and dosed
182. uded and provided with warning labels All internal starters relays timers etc are to be identified with Traffolyte labels All work is to comply with the I E T Regulations 17th Edition Equipment and wiring within Control Panels is to be segregated into two categories 1 Control circuits operating at voltages at which the I E T Regulations permit bodily contact Wherever possible control equipment is to be in this category 2 Control circuits necessarily operating at higher voltages 400 230 Volt power distribution circuits Starters and Contactors Category 1 is to be accessible without shutting down the Control Panel and without risk of contact with equipment operating at high voltages Category 2 is to be protected by a door interlocked isolator and or is to have fully shrouded terminals fuseholders etc so that there is no risk of electric shock by inadvertent contact for an electrician working within the control panel Relays are to be of the plug in replaceable type All Control Panels are to have control circuits operating at 24 Volt 50 Hz Where this is not possible then all control circuits greater than 50 Volts must be on the same phase to prevent interconnections from giving rise to a presence of 415 Volts at say a Fireman s Control Panel Control circuit transformers are to be manufactured to B S 3535 EN 60742 Control circuits within the panel are to be sub fused to ensure operating integrity of sections o
183. urer s recommendations The existing bases are to be reused for the chilled water and condenser water pumps on the primary circuit A specially fabricated inertia base is to be provided under temporary chiller chilled water pump as specified in the Section 8 00 Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 37 Date Checked SGJ June 2012 FHPP Impellors to be gunmetal casing to be cast iron shaft to be stainless steel and to be complete with self adjusting mechanical seals All parts in contact with the water to be suitable for the fluid concerned Motors are to be totally enclosed fan cooled squirrel cage induction type sized so as to be non overloading at any point on the pump curve 01 Chilled Water Circulating Pumps P3 1 P3 2 P3 3 and P3 16 The chilled water pumps are to be 4No single variable speed units Each pump is to be a horizontal in line direct driven unit with a motor running at 1800 rom maximum The motor on each pump is to be Inverter ready The duty of each pump is to be 90 5 litres sec at a pressure of 550 kPa The pumps are to be type 4300 Starline IVS Integrated 200 375 and 75 kW motor impeller ready suitable for 400v 3ph 50Hz electrical supply The pumps shall be as manufactured by Armstrong Holden Brooke Pullen tel 0161 223 2223 or equal and approved Condenser Water Circulating Pumps P3 4 P3 5 P3 6 and P3 17 The chilled
184. vides higher temperature chilled water to the building IT server and patch rooms and this system operates 24 hours per day and 7 days per week The main chilled water system normally works on 6 7 C flow and 13 3 C return but the secondary system works on 8 5 C flow and 13 3 C return and this is achieved using a conventional mixing circuit with a 3 port valve Separate constant speed chilled water pumps serve this circuit which is a constant flow circuit with 3 port valves on the room cooling units Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 30 Date Checked SGJ June 2012 FHPP Given that the above system operates nights and weekends when there is no cooling load elsewhere the requirement for the chillers is very low at those times and hence the 1400 kW chiller chiller no 3 operates during those hours together with the smallest chilled water pump and condenser water pump The minimum turndown of the existing chiller is unknown but probably around 20 25 and this equates to around 280 350 kW Linked to this system but installed on the primary side are 2 No buffer vessels each sized at 5000 litres and essentially piped onto the flow These provide additional backup to the supply of chilled water in the event of the smallest chiller or pump failing 100 030 PROPOSED SYSTEM The proposed replacement works involve installation of 3 No 2500kW water cooled c
185. w equipment All wiring associated with the controls system shall be carried out by Trend Control Systems Ltd 3 08 Installation Programme The installation of the new system shall be achieved as far as possible whilst maintaining the operation of the existing chilled water system Therefore the replacement works have been phased out to minimise the risk and number of shutdowns The proposed phasing in relation to the project programme shall be as described in this Specification however the Contractor is deemed to review the works described in the specification and with his expertise provide detailed method statement for each and every stage of the installation Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 21 Checked SGJ June 2012 FHPP SECTION 4 00 Enabling Works All works described under this section are to be read in conjunction with the phasing sketches attached to Appendix E of this specification PART 1 PREPARATORY WORKS All preparatory works are to be undertaken in the period shown on the project programme and are to be completed prior to the first weekend shutdown The following works are to be included within the preparatory works 100 010 SITE CLEARING Chiller Plantroom The Contractor is to allow for the clearing of the existing chiller plant room of all non essentials fixed equipment to allow the replacement works to commence The existing water
186. water pumps are to be 4No single constant speed units Each pump is to be a horizontal in line direct driven unit with a motor running at 1800 rom maximum The motor on each pump is to be Inverter ready however this is to be used only for the commissioning purposes The duty of each pump is to be 90 5 litres sec at a pressure of 550 kPa The pumps are to be type 4300 Starline IVS Integrated 200 375 and 75 kW motor impeller ready suitable for 400v 3ph 50Hz electrical supply The pumps shall be as manufactured by Armstrong Holden Brooke Pullen tel 0161 223 2223 or equal and approved Temporary Chiller Circulating Pump The temporary chilled water pump is to be fixed speed run and stand by pump The duty of the pump is to be 10 101 litres sec at a pressure of 150 kPa The pump is to be type 4380 Starline 80 250 3 kW with 3 kW motor The pumps shall be as manufactured by Armstrong Holden Brooke Pullen tel 0161 223 2223 or equal and approved Secondary Circulating Pumps No 1 amp 2 Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 38 Date Checked SGJ June 2012 FHPP The existing secondary chilled water pumps are fixed speed Holden Brook Starflex centrifugal pumps size 100 315 The duty of the existing pumps is 25 litres s at a pressure of 350 kPa The existing pumps are to be retained however it has been agreed with the client that the pumps would be refu
187. where described in the specification pressure gauges Pressure gauges shall have 100mm diameter dial faces Gauges shall be selected such that the working pressure is mid point on the scale Prior to placing orders for the gauges the Contractor shall check with the engineer to confirm the ranges of the gauges being proposed Unless otherwise detailed all gauges shall be pipework mounted on brass ring siphon tubes and be preceded by a gauge cock Temperature Gauges The Contractor shall supply and install in the position indicated on the drawings including the Schematic layout and where described in the specification temperature gauges Temperatures gauges shall have 100mm dial faces Gauges shall be selected such that the operating temperature is mid point on the scale Prior to placing orders for the gauges the Contractor shall check with the engineer to confirm the ranges of the gauges being proposed Unless otherwise detailed all gauges shall be pipework mounted and be of the vapour pressure type with brass pipe insertion pocket of suitable depth for the location Flexible Connections On the suction and discharge connections of all chilled and condenser water pumps and the chillers tied flanged rubber flexible connections are to be installed of the same size as the pipe concerned to provide a degree of isolation between equipment and pipework Rubber type to be selected to suit the fluid concerned over its whole range of operating
188. work associated with this work generally as detailed in Section 8 00 of this specification 100 030 POSITIONING AND INSTALLATION OF THE TEMPORARY CHILLER CIRCULATING PUMPS New circulating pumps are to be installed on the buffer vessel circuit The pumps are designed to work in a run and stand by arrangement and will be used as shunt pumps for the buffer vessel circuit during normal operation when the temporary chiller is not in operation When the temporary chiller is required to run the pumps will be used as main circulating pumps The pumps are to be installed at mezzanine level in the chiller plantroom just above the low loss header connection in the location identified on the tender drawings During the preparatory works the Contractor will install the pumps on a new base ready for the chilled water pipework connections The type and duty of the pumps is detailed in Section 5 00 100 040 PREFABRICATION OF INSTALLATION PARTS The Contractor shall measure all stool pieces required for the existing pipework that is to be amended and procure all necessary components ie valves flanges etc as required by the installation during this period If scaffolding access equipment or task lighting is required for any of the above works the Contractor is to allow for these as necessary PART 2 FIRST WEEKEND SHUTDOWN To eliminate the number of shutdowns of the secondary circuit that provides the essential cooling to the IT rooms a temporary chille
189. y high impact risks and contingency Daily Checks During and in between each project phase all chilled water systems are to be checked daily for correct operation and performance Records are to be taken and reported weekly 24Hr 7Day Cover During and between each project phase a maximum 4hr BEMS engineer on site response is to be provided for project related break down cover 300 040 EXISTING MOTOR CONTROL PANELS The existing 2 No Motor Control panels MCCA and MCCB are to be retained on site and only the relevant sections of the control system are to be refurbished in line with the new equipment The section of the MCC s which contains the Trend controller is to be refurbished with replacement of the controller and associated relays and control equipment this will need to be carried out item by item as there is no available space in the existing cabinet nor adjacent to the existing panel alternatively a chassis could be manufactured which would sit over the existing controls with the necessary control equipment attached built in such a way to enable removal of existing equipment as it becomes redundant Y 00 Enquires E4340 4 0 FHP SpecificationsM 8 Combined M amp E E4340 MAE Technical Specification docx 75 FHPP SECTION 8 00 Sundry Works in Connection with Engineering Services PART 1 TESTING AND COMMISSIONING Detailed description of testing and commissioning for each part of installation Temporary chiller Aft
190. y name s and reference identity associated with the existing BMS shall also be provided on the label e Every valve associated with the project to have a circular valve tag fitted which shall have an engraved number on it that shall relate to the valve schedules and plant schematic drawings provided by the Consulting Engineers and as later developed by the Contractor The Contractor must ensure that all labelling and identification follows the scope style and extent of the existing installations across the site 2 23 Out of hours working Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx Checked SGJ June 2012 FHPP Because of the existing function of the building and the retaining of the existing system during the replacement works the Contractor shall include for all necessary out of hours working Where this work will entail any major drain down of systems or work which prevents the use of the primary cooling system this work shall be carried out over a weekend The detailed scope of works is described in later section of this specification 2 24 On Site Manager The Contractor shall allow for a full time on site manager dedicated to this project alone not a working foreman to ensure that all operations are carried out in accordance with the Bank s requirements and to attend the site meetings with Bank s representatives This Manager shall also be responsible for the li
191. ystem is to be vented pressure tested and dosed while eliminating as far as practicable all air The last phase of these works is the commissioning of the new chiller based on the full load operation described in more detail under Section 8 00 200 040 REPLACEMENT OF CHILLER NO 3 2 All of the scope of works during the replacement of the Chiller No 3 2 and chilled water pump P3 2 and condenser water pump P3 5 with the only difference that the stand by pumps are to be replaced during this phase The chilled and condenser water stand pumps are numbered pumps No P3 3 and P3 6 The replacement process is to follow the scope of works as in the replacement of chiller No 3 1 for all preparatory weekend shutdown and post weekend shutdown works It has to be noted that the replacement of Chiller 3 2 in line with the current programme becomes feasible only if the operation of new Chiller No 3 1 and associated pumps is unproblematical during the testing period 200 050 REPLACEMENT OF CHILLER NO 3 3 Prior to weekend shutdown the Contractor is to prepare the site as described previously Weekend Shutdown During the first weekend shutdown of the main chiller replacement works the essential IT cooling loads shall be covered by the temporary chiller The primary circuit would be isolated from the Y 00 Enquires E4340 4 0 FHP Specifications 4 8 Combined M amp E E4340 M amp E Technical Specification docx 35 Checked SGJ Date June 2012 FHPP

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