HSE DIRECTIVE 5 ENERGY ISOLATION
Contents
1. TIK Dato Tealenng Forespurt av Talering Godkjent Kompenserende tiltak Taolering av sikkerhetssystem godkjent av Verneleder sign Feltsjot sign Fylles ut av omr deansvarlig Delegering av myndighet for Test og Tilbakestilling Avisolering Co CGR omaani San GA oder signatur fr bakes con omade S n OA DRIFTSISOLERING Tea Tibekokobing x x xX x 7 z E i 45 z 7 z Gan CEBREENE Omr deknikers navn Sign for Test Fateransovediogg Son ELEKTRISK ISOLERING Utstyrsnr Uisyr Lis m S n Kompetent person Referanse Vadlegg lam merket isipin Disipin Disiplin oisip n Ki kr Test Tilbakekobling innkoeet Utosier Dator Sin EL Sm Godkjent for Test Sign GODKJENT FOR TILBAKESTILLING ONCCRIOT Sign 6 Arbeidet or terdig og ust or testet og sat bake I normal drit Sgn Ut av uttrende avdeling Produksjon OT UT Mekanisk UT instrument UT Elektra UT Boring OTU CCR Kontrollrom OA Omradeansvarlig OT Omradetekniker U Utforende tekniker ATTACHMENT 6 FORM FORTRANSFER OF WELL CONTROL Plattform Dato Br nn no Slot no Fra Drilling amp Well Operations til Production Fra Production til Drilling amp Well Operations2. Reason for handover Detaljer vedr rende komplettering Well Type Tubing initial test pressure Production casing Initial test pressure X mas tree initial test pressure Tubing plugs installed type depth Liner bridge plugs installed type depth Junk in hole Any other pertinent details Trykk i Tubing og Annuli Trykk Medium Tubing wellhead A annulus indre ringrom B annulus C annulus D annulus Trykk og lekkasjetester Akseptert Ikke akseptert Dato Inflow test of SCSSV Inflow test of ASV Inflow leak test of x mas tree to 5000 psig Inflow leak test of x mas tree to 10000 psig Trykkstatus X mas Tree Bl dd av Ikke bl dd av Pressure innside X mas tree Pressure between Service Wing Valve and Blind Cap Pressure between Swab Valve and Blind Cap Pressure downstream Production Wing Valve Pressure in kill service line if installed 225 226 Ventilstatus X mas Tree og Wellhead Valves pen Lukket NA Koblet til ESD Swab valve Production Wing Valve hydraulic ESD Upper Master Valve hydraulic ESD Lower Master Valve manuell Service Wing Valve Kill Wing Valve Pressure gauge isolation valve on X mas tree Needle Valve on Tree Cap A annulus valve s inner annulus valves B annulus v
3. 1 Increase the pressure to approx 10 of the test pressure maximum 10 bar Check for possible leaks flanges plugs etc Increase the pressure gradually to 50 of the test pressure Check for possible leaks flanges plugs etc Increase the pressure gradually to the test pressure Maintain the pressure for an adequate period of time in order to perform a thorough check for leaks Oo P Ws o Avoid shock loads o Avoid passing in front of possible leakage points o Monitor any possible temperature variations that can influence the pressure After leakage testing 1 Reduce the pressure gradually to atmospheric pressure 2 In the event of drainage o refill nitrogen at the highest point avoid creating a vacuum o check that the drainage system is not overloaded 3 Check that all parts of the tested system have been depressurised drained low points check valves etc Typical safety measures for leakagetesting is seald off affected area A safety evaluation shell be conducted before the work starts ref Safety measure for pressure testing 223 224 ATTACHMENT 5 ICC FORM dbp Isolasjonserkl ring nr TArbeidsordre er dekket av IE Arbeid som skal utf res 1 Original 3 Omr deansvarig OCR 2 Omr detekninker 4 Andre Elektro Sikkerhetsutstyr isolert JA NEI Piatform Dakkodu Utstyr som skal isoleres Fra Ki Dato Utstyrsnr
4. o Fluids containing hydrocarbons shall be flushed to a closed drainage system or an operative system For flushing to an operative system measures must be taken to protect against backflow from the working system After flushing the fluid shall be drained to a safe storage site o Fluids containing hydrocarbons shall be drained to a closed drainage system o Diesel oil can be drained to a hazardous drain o Chemicals lubricating oils glycol etc shall be collected in suitable containers and treated in accordance with Hazardous Waste in the HSE Directive no 6 Hazardous Materials and Waste Removal of hazardous atmosphere For working equipment systems where there is a risk of emissions of e hydrocarbons or hazardous gas or if there is a risk of explosivemixtures e they must be purged with nitrogen to a safe area before they are opened Before working equipment systems can be opened the content of hydrocarbons in the nitrogen atmosphere must be below 5 volume Resetting e When resetting the working equipment systems for hydrocarbons or other flammable materials that have been opened the system shall be purged with nitrogen until the oxygen content is below 5 volume e Instead of purging with nitrogen equipment systems can be filled with water or another non explosive fluid 222 ATTACHMENT 4 INSTRUCTIONS FOR LEAKAGE TESTING Modifications and projects shall leak test according to BPN Z 007 Ope
5. Authority Process Operations When opening systems to install blinding on hydrocarbon or chemical bearing system in connection with facilities with ope rating pressure of more than 55 barg double block and bleed can be used as shut off When using mechanical blinding as operational installation it must be possible to monitor and bleed of any pressure that builds up against the blinding Before mechanical blinding is removed ensure that e any built in pressure that has built up is released any flammable or hazardous liquids have been drained to a safe area Using a mechanical pipe plug When a mechanical mechanical or hydraulically expandable plug is used for pressure testing or leak testing the following requirements apply e Only plugs with double seals that allow for a pressure increase up to the maximum operations pressure between the seals must be used The plug must have been leak tested up to this pressure before the work is started It must be possible to drain the chamber between the seals to the atmosphere and to monitor the pressure in it e Work on a pipe plug must only be carried out by personnel who have been trained in the use of this particular plug There must be a user manual for the plug and the manual must be followed SJA should always be performed e The plug must be secured mechanically using a wire or chain e The area must be secured during testing In particular there must be no access to the
6. area where the plug would go in the event of an unintended blowout Double block and bleed When double block and bleed is used as operational isolation 211 212 the bleed off shall be equipped with pressure indicator and shut off valve to make it possible to verify the leakage rate if the bleed off valve is kept close a log must be kept to make sure no pressure is built up bleed off is routed to a safe area if the first valve is leaking the the leakage rate shall be evaluated to make sure it is routed to the right place and also to make sure it is not plugged due to hydrates solid etc The OTLD takes the decision if the leakage rate is acceptable Single valve Operational isolation using a single valve must be subject to thorough consideration Alternative more reliable solutions must be considered A single valve must be secured in the closed position and leak tested to the existing operating pressure in order to be approved as operational isolation For leak tests against the flare and closed drainage leak tests of valves can be conducted from the upstream side Pressure safety valves PSV and check valves are not approved as single valves for operational isolation Controlvalves shall only be used in non critical service when a minor leak is acceptable Valves that are to be worked on may not be used for isolation if the work may have an impact on the valve s integrity or mechanical strength Labelling and l
7. av i neste rubrikk i samme linje for fortelle om sikkerhetsutstyr skal isoleres Linje 3 amp 4 Brukes for identifisering av arbeidssted og utstyr plattform dekk eller modul og navn p utstyr samt utstyrnummer Hvis arbeidet omfatter flere utstyrnummer skrives de inn fortl pende Er det mer utstyr kan dette legges som vedlegg Neste rubrikk brukes for tidfeste isolasjonen Husk at sikkerhetsutstyr m ha et tidspunkt for tilbakekobling Linje 5 Isolering forespurt av Underskrives av omr deansvarlig avdelings leder eller tekniker dvs den som nsker isolering utf rt Neste rubrikk Isolering godkjent Underskrift av omr deansvarlig Modul 2 beskriver kompenserende tiltak Denne modulen skal kun fylles ut dersom det er isolasjon av sikkerhetsutstyr Omr deansvarlig legger inn kompenserende tiltak Verneleder og feltsjef signerer for godkjenning av kompenserende tiltak Modul 3 beskriver ansvar og myndighet for test og tilbakestilling avisolering Denne modulen skal fylles ut av omr deansvarlig Omr deansvarlig kan her delegere myndighet til kontrollrom eller omr detekniker for utf ring av test eller tilbakestilling avisolering Modul 4 beskriver driftsisolering Det fylles ut navn p utstyr hvilken disiplin som har bedt om isolering Om isolering er skjedd i pen eller stengt posisjon Om utstyret er merket og om utstyret er fysisk frakoblet blindspade montert Neste rubrikk er for testin
8. item 4 Electrical isolation e The isolation confirmation certificate must show which equipment systems will be worked on A sketch drawing showing in detail which equipment systems are involved should also be included The performing department and contact person must also be included on the certificate e All work on instrumented control systems typically digital techniques ABB work on PKS PSD ESD requires a SJA in order to identify possible effects of unintentional incidents such as a node stop e g In connection with isolation of heater cables the isometric drawings where this exists and P amp ID showing the extent of the heater cables must be enclosed with the work permit Process for isolation confirmation certificates The department that requires the isolation will fill in and pass the isolation confirmation certificate with the relevant P amp ID s to the Area Authority as described in Completing isolation confirmation certificates For work that can be planned the isolation statement should be delivered to the area responsible department 2 3 days before the work is to be performed The department manager area authority or area technician shall complete the isolation confirmation certificate and determine add the necessary compensating measures e In connection with isolation of safety systems the offshore installation manger and the HSE function safety advisor must approve the isolation confirmati
9. more points cannot be fulfilled an approved isolation confirmation certificate shall be used HSE DIR ENERGY ISOLATION ATTACHMENTS Attachment 1 High Voltage Installation ICC Form Attachment 2 Compilation of ICC Form Attachment 3 Instructions For Opening Working Systems Attachment 4 Instructions For Leakage Testing Attachment 5 ICC Form Attachment 6 Form For Transfer Of Well Control ATTACHMENT 1 HIGH VOLTAGE INSTALLATION ICC FORM bp Hoyspenningsanlegg IEACC nr Arbeidsordre er dekket av IE Arbeid som skal utf res 1 Original 3 Omr deansvarlig CCR Sikkerhetsutstyr isolert JA 2 Omr detokninker 4 Andre Elektro NEI PlattormDekkModu Utstyr som Faki Dato skal isoleres 1 Utstyrsnr 1 2 3 4 Til Kl Dato Tealenng Tesloring Forespurt av te Godkjent FN Kompenserende titak 2 aan goder Verneleder sign Fetsjet sign Fylles ut av omr deansvarlig Delegering av myndighet for Test og Tilbakestiling Avisalering 3 Redvendg signatur f r test COR Om dsoknier Sin OA Nedvendig signatur for tibakestiling COR Omr detekniker Sign OA Driftsleder Autorisert person stedfortreder utpeker i henhold til DH FSH94 med dette som leder for sikkerhet og a SOM leder for kobling Driftsleder Autor
10. so that measures can be taken to remove or control any elements of risk identified during the preparation for or performance of the said task or operation CCR techncian is a person in the central control room CCR who controls and coordinates all production and other activities onboard 202 Performing technician is the person who specifically physically executes the work covered by the work permit Safe area is a place suitible to transfer liquid or gas to without creating a dangerous situation For a vent this could be an area without ignition sourses HVAC or other suctions Primarily gas shall be depressurised to a flare vent system and liquid to a drain system 2 RESPONSIBILITY Offshore Installation Manager OIM is the highest authority on the platform and is responsible for e ensuring that all isolation of energy and safety systems is carried out safely and in accordance with HSE directives instructions HSE function safety officer is responsible for providing professional advice when planning isolations on safety systems Area authority is responsible for e ensuring that all isolations in his her area of responsibility are carried out safely and in accordance with HSE directives instructions CCR technician is responsible for e coordinating all work activities underway in the operations department s area of responsibility e maintaining an overview and status of isolations Area technician is res
11. utf rt Avisolering skal skje av kompetent person Avisolering skal ikke skje f r f rste linje i modul 6 er signert Denne signering skal v re samsvarende med delegering av myndighet i modul 3 Modul 6 beskriver godkjenning av tilbakestilling F rste linje er signatur for godkjenning av tilbakestilling b de for driftsisolering og elektrisk isolering Signatur skal v re i hht delegering av myndighet i modul 3 Nederste linje skal signeres av utf rende teknikker i den avdeling som utf rer arbeidet 219 220 ATTACHMENT 3 INSTRUCTIONS FOR OPENING WORKING SYSTEMS General requirements Before opening working equipment systems the equipment system shall be shut off isolated the pressure shall be relieved any fluids shall be drained any remnants of flammable or hazardous materials shall be removed Depressurisation e Working equipment systems that are to be opened shall be shut off isolated Internal pressure shall be released to a safe area Before the equipment system is flushed drained it must be verified that e the shut off valves do not leak Removal of fluids e For working equipment systems where there is a risk of a discharge of hydrocarbons or chemicals that are classified as toxic hazardous corrosive allergenic or carcinogenic they must be flushed with water or another suitable medium before they are opened o Chemicals shall be flushed pumped to an operative system or to a suitable container
12. HSE DIRECTIVES ENERGY ISOLATION Directive owner per 01 01 2014 Egil Songe M ller Please consult the asset s HSE instructions for potential installation specific requirements ENERGY ISOLATION 1 GENERAL Purpose The purpose of this directive is to ensure that isolation and re setting of electrical systems and operations systems is carried out safely and in accordance with the regulations is managed and documented Domain This directive applies to all BP operated installations and contracted installations on the Norwegian continental shelf Owners of contracted installations who have a system that satisfies the requirements in this directive may use their own system provided this has been clarified upon implementation Onshore facilities subsea or projects where BP Norge have a particular responsibility and which are assessed being part of the petroleum activities References e The Activities Regulations section 82 Work on and operation of electrical installations NPD Regulation Regulations relating to safety in work on and operation of high voltage installations The Directorate for Civil Protection and Emergency Planning s regulations Regulations relating to safety in work on and operation of low voltage installations e The Directorate for Civil Protection and Emergency Planning s regulations 088 Common Model for Work Permits The Norwegian Oil Industry Assocation s regulati
13. SONAL ISOLATION Introduction Personal isolation is a simple operational isolation that can be used in connection with shut off of minor process and opera tion equipment When using personal isolation the plant must be closed in accordance with Section 5 Operational insulation 213 214 For personal isolation securing electric equipment see section 4 Approval Personal isolation does not require an approved isolation confir mation certificate Personal isolation requires an approved work permit as descri bed in HSE Directive 1 Work Permits Use Personal isolation can be used for minor work such as e replacing pressure gauges replacing filters replacing minor instrument valves calibration of level instrument float on manifold with diesel minor PM work Requirements for use of personal isolation The following requirements must be met in order to use personal isolation The standard for personal isolation must be the same as for use of the isolation certificate e Isolation work and de isolation are carried out by the same person during the same shift period Personnel who carry out personal isolation have the necessary competence and are approved by the area authority e If the work site must be left the isolation must be secured by plugging or blinding open ends and by labelling and locking isolation points The isolation shall not have operational or safety consequences If one or
14. alve s C annulus valve s D annulus valve s A annulus Pressure Gauge Isolation Valve B annulus Pressure Gauge Isolation Valve C annulus Pressure Gauge Isolation Valve D annulus Pressure Gauge Isolation Valve SCSSV Control Line Isolation Valve ASV Control Line Isolation Valve ASV Setting Line Isolation Valve Chemical Injection Line Isolation Valve Lubricator Valve Control Line Isolation Valve Deep Set Injection Valve DSIV Downhole Safety Valves SCSSV Surface Contr SubSurface Valve ESD ASV Annulus Safety Valve ESD Andre Downhole Valves amp Circulating Devices Dummy GLV Shear Orifice Valve CIV Lower Side Pocket Mandrel Middel Side Pocket Mandrel Upper Side Pocket Mandrel Chemical Injection Side Pocket Mandrel Sliding Sleeve no 1 Lubricator Valve e g SFIV Separat oppstartsprosedyre for br nnen m f lges for br nner med ASV uten gasslaft ventiler installert dette for sikre at ASV er pen f r man starter produksjonen GLV Gas Lift Valve CIV Chemical Injection Line Kommentarer og observasjoner Identifiserte farer og forh ndsregler ivaretatt Unntak fra BP policy og eller PTIL regelverk Vedlegg Ja Nei Wellhead Tree Diagram Completion Diagram Wellbore Barrier Diagram Well Status Form Test Certific
15. ate for X mas Tree and Downhole Valves Godkjennelse og aksept av handover Wellhead Operator Completion Engineer OTLD ODK Drilling Supervisor WIS Completion Engineer skal signere etter initiell ferdigstillelse 227
16. check all parts of the heater cables before megging and electrification Storage of original and copy of isolation confirmation certificate Work in progress The original isolation confirmation certificate shall be stored at the work site or with the area techncian Appendices must be kept with the original For isolation of safety systems a copy shall be held by e HSE function safety adviser In or near vicinity of CCR e Area Technican A copy of the isolation confirmation certificate shall be kept in or in the immediate vicinity of the central control room The area technician shall retain a copy of the isolation confirmation certificate For electrical isolation the competent person ele ctrical operations electrician shall retain a copy of the isolation confirmation certificate Follow up work and re setting The area technician shall sign performed isolation confirmation certificates The Electrical copy of the IE could be unsigned by the area technician The peforming technician shall gather the original and all copies of the isolation confirmation certificate and bring them to the performing department 4 ELECTRICAL ISOLATION Introduction For work on electrical equipment and installations or on equip ment that is connected to same all power supply to the equip ment installation shall be isolated disconnected electrically Activation of emergency trip is not regarded as being electrical isolation as the emergency
17. dous auxiliary mediums air water without hydrocar bons glycol lube oil hydraulic oil etc single valves can be used as shut off requirements for isolation of single valve is given below When opening systems to install mechanical blinding on hydrocarbon or chemical bearing systems including diesel in connection with facilities with a maximum operating pressure of less than 55 barg a single valve can be used as shut off Requirements for single valve isolation are given below The maximum pressure support shall be determined by the area technician and is typical PSHH based on all energy sources upstream downstream internally and externally In addition an uncertainty margin must be allowed for 210 The following additional requirements are made for work in these two categories e Work in this category must have a short duration e The work must be thoroughly planned e A Safe Job Analysis SJA must have been carried out with a positive conclusion and resulting measures implemented e Any actions in case of a leak shall have been clarified in a SJA e An extra guard must be posted in the area until a positive isolation has been established It must be considered whether the work of installing blinding involves a greater risk than the original scope of work because of the extra time it takes for example The work method must be evaluated based on this e The work shall have been reviewed and approved by Technical
18. ements for execution An isolation shall be performed as close as possible to the tank or work site Where it is possible a bleed shall always be located in the working area to make it easy to verify that no pressure has built up before the work is started The minimum recommended frequency of monitoring is once per crew change and immediately prior to breaking contain ment The isolations shall be checked once per shift while work is performed within the isolations The isolation integrity shall allways be a part of the shift handover All connections must be mechanically blinded when isolating tanks containers etc for entry Exceptions are standpipes if they are not connected to other operating systems under pressure flare closed drainage etc which may contain hydrocarbons hazardous chemicals nitrogen or other things that may lead to undesirable situations Note that the standpipe may contain condensate or hazardous chemicals that can represent a risk In such cases they must be isolated from the container through blinding Blinds pressure indicators etc that are installed as part of the isolation shall have the same pressure class as the pipes equip ment to which they are connected In connection with removal of spoolwork equipment etc open flanges must be mechanically blinded e free standing pipes must be properly secured Mechanical blinding When opening systems to install mechanical blinding on less hazar
19. externally In addition an uncertainty margin must be allowed for If there is any uncertainty PSHH should be used opening of systems containing extremely toxic gas H2S etc Single valve can be used as operational isolation instead of mechanical blinding by opening of the hydrocarbon or chemical bearing system including diesel in connected with facilities with operating maximum pressure of less than 10 barg when the work site is not left by opening of systems for less hazardous auxiliary mediums air water without hydrocarbons pure dry glycol lube oil hydraulic oil etc Pressure limit is 55 barg e when barrier is equal or less than in diameter and max operation pressure has a limit of 55 barg on hydrocarbon and chemical system Shut Down During shut down when the system is depressurized and inert and external barriers are established against all energy and inert single block could be used for isolation in the depressuri zed system also on systems usually having higher operating pressure Use of barriers should be planned before the shutdown If possible the barriers should be tested before the system is 209 depressurized External barriers should always be tested and logged to be approved as a barrier import export wells etc During the shutdown when the external barriers are secured safely it is permitted to use plastic strips to secure insulation within its boundary Requir
20. g F r inn innkobling og frakobling Godkjent for test skal signeres i hht Modul 3 f r test iverksettes Det er mulighet for foreta separate tester for de forskjellige utstyr ved at det krysses for om utstyr 1 8 er testet Siste rubrikk er for tilbake stilling Her skal omr deoperat r signere For st rre driftsisoleringer m det lages blindingsinstruks dvs prosesstegninger som viser ventiler og isoleringsposisjon for denenkelte ventil Man refererer da til vedlegg Tilbakestilling skal ikke skje f r f rste linje i modul 6 er utfylt Modul 5 beskriver elektrisk isolering F rst beskrives utstyr som nskes isolert med mulighet for spesifisering av delutstyr f rste rubrikk utstyr merket krysses det av om utstyret er merket ute i anlegget Kompetent person elektriker som er godkjent for utf re isolering avisolering isolerer og setter p blank systeml s Utf rende disiplin setter p sin l s og f rer l s nr inn p skjema og signerer ngen elektrisk isolering skal utf res f r kompetent person har signert Neste rubrikk g r p Test F r inn tidspunkt for innkobling og utkobling Det kan spesifiseres hvilket utstyr som nskes testet ved krysse i rubrikkene 1 5 Ved st rre omfattende EL isoleringer kan det vises til egen liste der avganger som er skal isoleres spesifiseres Godkjent for test skal signeres i hht Modul 3 f r test iverksettes Det signeres for avisolering etter at dette er
21. genic or carcinogenic Safety measures e In connection with the opening of operating equipment systems that entail a danger of releasing hydrocarbons Safety measures for work on hydrocarbon bearing systems must be followed In connection with the opening of operating equipment systems that entail a danger of releasing chemicals Safety measures for work with hazardous cheimicals must be followed e Develop a contingency plan against leakage before breaking hydrocarbon and hazardous chemical systems e All cut points shall be marked on relevant documentation and in the field and shall be approved by the Area Responsible operator Application Mechanical blinding shall be used as operational isolation in connection with hot work Class A on hydrocarbon bearing systems connected to pre surised facilities in operation entry of tanks and enclosed spaces opening of process equipment and systems for work that involves leaving the work site Double block and bleed or mechanical blinding shall be used as operational isolation in connection with opening of hydrocarbon or chemical bearing systems connected to facilities with a maximum pressure support of more than 10 barg 145 psig When using Double Block and Bleed the worksite shall not be left if leakage to the atmosphere or similar risk may occur The maximum pressure support shall be determined by the area technician based on all energy sources upstream downstream internally and
22. isert person stedfortreder Dato Sign Navn stanset Seer Tiltak JA Nei Dato Sign Er utstyr frakoblet L Er utstyr sikret mot innkobling avi st 4 K Er spenningspr ving foretatt Er endepunktsjording p satt L Arbeidslaget er gjort kjent med konsekvenser omfang S Er spenningspr ving og jording p arbeidsstedet foretatt Spesielle tiltak Undertegnede erkl rer at alle tiltak er fjernet og at utstyr kan innkobles Leder for kobling Dato Sign Leder for sikkerhet Dato Sign Navn Navn GODKJENT FOR Jeg breer hevd at tale p elon styra ertet TILBAKESTILLING og anmode om at utsyr blakke arna ONCCRIOT Sign 55 Arbaidat ar ferdig og utstyret er testet og satt tibake I normal drift Sign ut av utf rende avdeling Produksjon OT UT Mekanisk UT Instrument UT Elektro UT Boring OT UT CCR Kontrollrom OA Omr deansvarlig OT Omr detekniker UT Utf rende tekniker 217 218 VEDLEGG 2 BESKRIVELSE FOR BRUK AV ISOLASJONSERKL RING Heading Isolasjonserkl ring nr Isolasjonserkl ring generert gjennom Workmate skal p f res workmate nummer For andre isolasjonserkl ringer brukes erdig nummererte isolasjonserkl ringer Arbeidsordre er nr Her fylles inn hvilke arbeidsordre er som dekkes av isolasjonserkl ringen Modul 1 beskriver arbeidet Linje 1 Arbeid som skal utf res her fylles inn tekst fra arbeidsordre Linje 2 forteller hvem som skal ha kopi Husk krysse
23. ked with red color o Valves in open position shall be marked with green color o The area in between the isolstion where the job is performed shall be marked with yellow color Well intervention Before well intervention the well intervention team WIS shall assume control of the Xmas tree and the subsurface safety valve DHSV for the well in question Well controll shall be assumed when the area authority produ ction OTLD signs the form for Take over of well control to WIS or the toolpusher All handover between operation and well interventionteam must be followed by an isolation confirmation certificate An Isolation confirmation certificate shall be used for rigging that may reduce the integrity level of the X mas tree and rem oval of hydraulic connections for emergency shutdown In connection with well intervention operation of the Xmas tree valves and or subsurface safety valves DHSV shall be conducted by WIS without requiring a separate isolation certifi cate except for e valve interface from well intervention to process facility e g wing valve valves to closed drain and production header that require a separate isolation confirmation certificate e When well intervention is complete WIS shall deliver the Xmas tree and subsurface safety valve DHSV to the area authority production OTLD by signing the form for Takeover of well control e NSSPU GP 10 36 Breaking containment is valid for all well work 6 PER
24. l pole switches in the main power circuit must be secured and locked in open position For electrical isolation of low voltage systems below 440V 480V the system shall be secured against accidental connection If sufficient security ca nnot be established other security measures such as earthing short circuiting shall be implemented For electrical isolation of high voltage systems the provisions of Work to secure high voltage systems in HSE Directive 8 Electrical installations shall be followed If integrated earthing equipment is installed this must be used to connect all main conductors of an isolated unit o earth Marking and labelling n the event of isolation isolated equipment and switches must be labelled with a red tag showing name of equipment number of isolation confirmation certificate name of executing discipline n the event of isolation isolated equipment shall be locked off o prevent improper operation of equipment Each discipline shall use padlocks keys with colours conforming to the colour codes for Ula Valhall and Skarv For isolation of electrical installations and equipment of 440V 480V or higher the isolation shall be secured with at least wo padlocks one from the electrical department and one from an executing department 207 208 For isolation of electrical installations and equipment of lower than 440V 480V the isolation shall be secured with at least one pad
25. lock from the electrical department If a padlock cannot be fastened some other appropriate securing device shall be used If an isolated starter tray is to be used temporarily in another location or be removed for testing the padlock and isolation must be transferred to the tray s garage If one discipline completes the work before another the first discipline can remove its padlock and sign the isolation confir mation certificate 5 OPERATIONAL ISOLATION Introduction For work on process auxiliary and drilling systems equipment and associated components in connection with pressurised equipment installations such items must be isolated depres surised and any hydrocarbons chemicals removed before work can commence on the equipment the system Opening of process auxiliary and drilling systems equipment shall be carried out in accordance with Instructions for opening operations systems This directive does not apply for isolation vis a vis reservoirs if and only if Drilling and Wells have their own approved procedu res and NSSPU GP 10 36 Breaking Containment is followed Maritime systems are isolated according to specific and appro ved procedures Approval Operational isolation requires e An approved isolation confirmation certificate e An approved working environment permit level 1 in the event there is a danger of the release of o hydrocarbons o chemicals classified as toxic hazardous to health corrosive aller
26. ocking For operational isolation valves blinds must be marked with red labels showing name of equipment number of isolation confirmation certificate name of executing discipline For operational isolation valves must be secured with chains wire locks etc so that handwheels handle cannot be operated Plastic strips shall not be used If this is not possible handwheels handle must be removed and the valve must be marked with LO LC locked open locked closed sign o for locking of valves jobs that last less than a week plastic strips can be used if the valves are not considered as safety critical o electric valves must be electrically isolated in the correct position and the handwheel handle for manual operation must also be secured o pneumatic or hydraulic valves must be disconnected from air hydraulics in closed position or be isolated from the air hydraulic supply with double block and bleed Valves that open when energy is lost fail open must be mechanically locked in the closed position Preferably a mechanical lock should be fitted on the valve and not on the drive medium hydraulics pneumatics If this is not possible isolation locking and disconnection of the impulse pipe must be considered o valve position must be easily identifiable vi Coding To clearify the boundings of the isolation the following marking shall be used on the P amp IDs o Valves isolated in closed position shall be mar
27. on certificate Executing the isolation The area technician shall ensure that the isolation confirma tion certificate is correctly filled in and covers the work to be performed There shall allways be two area technicians present when setting or removing an isolation for e HC systems e Larger isolations To be decided by the OTL D One of the area technicians shall be checked out for the area of the isolation and the other shall have a thorough knowledge of Directive 5 For operations isolations the area technician shall e prepare the equipment system for isolation in accordance with operations isolation ensure that equipment systems are isolated locked and labelled in accordance with the isolation confirmation certificate and work permit e At start of every work period make sure that there is no pressure buildup in the double block and bleed isolations in all ongoing work sign the isolation confirmation certificate In connection with electrical isolation a competent person electrical operations electrician shall e perform electrical isolation and lock and label the isolation i accordance with Electrical isolation note the padlock number on the isolation confirmation certificate e sign the isolation confirmation certificate Overview of isolations The CCR technician shall ensure that an overview is always available of active isolations at any given time of process equipment systems electrical eq
28. ons e Norsok standard O DP 001 Operations principles Guidance on Practice for Safe Isolation and Reinstatement of Plant NSSPU GP 44 40 1 HSE Directive no 1 Work permits HSE Directive no 2 Entry HSE Directive no 8 Electrical installations HSE Directive no 11 Safe Job Analysis Breaking Containment NSSPU GP 10 36 Definitions and abbreviations Work Permit is a written permission to carry out a defined job at a given place on an installation in a safe manner and under certain conditions Authorised person electrical is a BP employee appointed by the responsible person electrical installation to ensure that ele ctrical installations and equipment are carried out in accordance with current regulations within one field Barriers mean measures that prevent hazardous conditions such as 201 o physical intervention that shuts down or removes energy supply o administrative routines and procedures Double block and bleed is a method of process isolation where there are two physical barriers valves blinds etc with bleed off in between where each of the barriers can be operated secured and tested indpendently Single valve is a method of operational isolation consisting of a shut off valve that is leak tested and secured in the closed position High voltage installations are electrical installations with nominal voltage of more than 1000 V alternating voltage or 1500 V direct voltage Isolation is a method that blocks liq
29. ponsible for e ensuring that necessary isolations are performed in connection with work in his her area of responsibility e preparing process equipment and systems for operational isolation e isolating safety systems in accordance with work permit isolation confirmation certificate e ensuring that the correct equipment systems are isolated and prepared for work in accordance with work permit isolation confirmation certificate making sure all isolations are back in position after the work has ended Competent person electrical operations electrician is responsible for e carrying out electrical isolation of equipment and systems safely and in accordance with regulations and HSE directives 203 204 3 USE OF ISOLATION CONFIRMATION CERTIFICATES Introduction All isolation and or disconnection of process equipment systems electrical equipment systems e safety equipment systems requires an approved isolation confirmation certificate with the exception of personal isolation In addition an approved work permit is required for execution of work that requires isolation The isolation confirmation certificate is not time limited with the exception of disconnection of safety systems Isolation confirmation certificate requirements e The isolation confirmation certificate must be used for all isolation with the exception of isolation of high voltage installations e For isolation of high voltage installations ref
30. rations may leaktest by non critical media when a leak does not pose a risk In a service test the system shall be pressurised to the maximum available operating pressure Service test may be performed on Seawater Firewater Instrument air Working air Domestic drain Potable water Industrial water Fresh water and Hydraulics Before work begins Check that the pressure gauge and other test equipment has been calibrated and will withstand the pressure that is to be tested e that the connected and installed equipment will withstand he pressure that is to be tested e that any possible energy reservoirs such as accumulators pulsation dampers etc have been isolated When using water as a test medium e that the foundation and supports for the equipment to be tested will withstand the combined weight of the equipment and water used during the test Leak test e All parts of the operating system equipment that have been opened flanges nozzles lids instrumentation etc shall be tested for leakage before operations insulation is removed e Water should primarily be used as test medium In case it is not practical to use water as test medium nitrogen is used instead e Leak test is performed by 110 of the maximum operating pressure 90 of opening pressure set on the safety valve Performance of leakage testing When using water the equipment shall be filled to 100 first ensure that the gas is vented at the highest point
31. trip only cuts off the control power Approval Electrical isolation requires an approved isolation confirmation certificate An approved work permit can be used instead of an isolation confirmation certificate for low voltage installations when e the work is conducted by a competent person electrical the equipment will not be isolated for longer than the duration of the work permit For isolation in high voltage systems the form entitled Isolation certificate for high voltage installations shall be used Atter nativly Leder for sikkerhet a and Leder for kobling can be written in the work permit if this is electronically traceable Execution Electrical isolation of distribution and battery systems shall only be performed by a competent person electrical Autmation technitions can isolate in automation systems Performing technician shall be present when the isolation is removed The isolation shall ensure e that all power supply to installations equipment is isolated including power supply for control and indication e that stored energy including any capacitor potential is discharged e that equipment cannot be rendered live by means of an accident or error e that circuits are without voltage by using a voltage indicator which must be checked before and after use that equipment is labelled and locked in the isolated position For electrical isolation of low voltage systems of 440V 480V or higher al
32. uid gas electric current or other stored energy so as to ensure safe access for inspection or maintenance Isolation valve is a valve that can be tightly closed for example a ball or gate valve Regulation valves and PSV could not be used for isolation purpose Competent person electrical is a professionally qualified person approved by the responsible person electrical systems to work independently on electrical installations according to the current regulations Low voltage installations are electrical installations with nominal voltage up to and including 1000 V alternating voltage or 1500 V direct voltage Leak test must always be performed to 110 of the maximum allowed operating pressure of 90 of the PSV set pressure Leakage rate is considered by the operator Maximum operating pressure is the maximum pressure pos sible in the system given the prevailing operating conditions typically given by PSHH Mechanical blinding is a method of operations isolation using physical blinding spade spectacle flange blind flange spacer Blinding should be equipped with a bleed if it lacks bleed options Area authority leads all activities within a specific area Area technician has the operational responsibility for a specific installation or area Personal isolation is short term isolation used for minor work Safe Job Analysis SJA is a systematic and step by step review of all elements of risk carried out prior to a specific task or operation
33. uipment systems e safety equipment systems Temporary removal of isolation for testing For testing of isolated equipment such as leak testing and star ting running motors equipment can be temporarily de isolated In the event of temporary de isolation of equipment for testing e the area technician shall ensure that the test can be conducted safely e the area authority shall approve temporary removal of isolation by signing the isolation confirmation certificate The isolation confirmation certificate is still active even when the equipment is in test Re setting isolation Before re setting all the involved executing disciplines must remove their padlocks from trays equipment and sign the isolation confirmation certificate The area authority or his her deputy must approve that isolated equipment systems are ready for re setting In connection with re setting of operational isolation the area technician shall 205 206 ensure that any mechanical blinding is dismounted e re set equipment in accordance with Operational isolation and sign the isolation confirmation certificate In connection with re setting of electrical isolation a competent person electrical operations electrician shall remove padlocks and marking conduct electrical connection sign isolation confirmation certificate When re setting heater cables the isolator and competent person electrical operations electrician shall physically
Download Pdf Manuals
Related Search