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SAM12 User Manual

1. esseeesseeu 7 1 troduction o osi e osse oho cae diede o sva Edere tad ede eise etes ede da ergo Ead ee ied ees edis 7 1 Controller Board Type 5670A 5 edes sees eeeesee v cues ees veo eu ete Eee eobee esee tee d ben etna vede eene ee eas uds 7 1 EI EOC CS SOM us icio andes diis estes icti erbe dri vaca ft As otecV Edad esau coo dam ene aa 7 1 PL30 Header for Non Volatile Memory CF eere terree retirees 7 2 PLS 44 pm Primaty IDE port for 2 5 Cis KS et tetas et e t ue e eet teas mt qao 7 2 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Contents PL25 40 pin Primary IDE port for 3 5 disks eere 7 2 PL4 40 pin Secondary IDE port for CD Roms essen 7 2 IC9 Programmable VO Device as 2225 25a sacs 1cbaate vote Deui bu prr i AA d bci nad 7 2 Meroen M Oro e 10 0 i RR RR PRIOR ERR RNC 7 2 IC T Sound Impia 2 55 nn tbe Baucsct t usen utes Bou eek ueniat asad 7 2 ICZ amp 165 USB power COMMONET S 5 paso ce nclietiteseu tte Moe E a anon oan tacts 7 3 ICS LCD Power and CODUOL nenese cute etri d eo uace ens tebe ds uenis ae 7 3 ICE EPROM 5a sodtsettipeleusebpt beste E uttter ac cse edo Suse d cou t Moe DUE 7 3 IBS PSP INI CNN RE DO NOTET TENTER 7 3 TED US siete cnet deeeeesane on a Ua ter aite psoaseacaencneteaion aca taens o odd Ete 7 3 Gu CU CoD c U nes 7 3 Battery Controller Board Type 56604 eee eere eee e
2. sssssseenenenenennn 6 2 Backoronnd Update RI T TEE N 6 5 risu tudscie sumi i a 6 5 Calculation of the Monitoring Time T cccccccccccccccececeeeeeeeeeeeeeeeeeeeeeseeeeseeeseeeeeseseeseeeeess 6 6 Minimum Detectable Activity MDA and High Background Criterion 6 7 Chanain COBOIIOFS s cocer iter ret Eton P lass ti PetUE D UD can Se icc T 6 7 Contamination AIT soo ostio ep onan oL eeiam tebeet bum ba se NP EETA 6 8 Calculation of Activity and Uncertainty eese nnns 6 8 OMERI aos putussse oe seco o Ste tei bE deut Uu sme M Rc I LII LM pU EM UE 6 9 Natural Background Reduction NBR cccccccccccccccceeccecceeeeceeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 6 9 Cobalt Coincidence Monitoring CCM eese nnns 6 9 Residual Contamination Beyvel peceestesseivt text eee oes bmteer tene erp petebat ved es Pese bone Cale 6 9 Automatic Calculation of Calibration Monitoring Time eene 6 10 Isotope samma efDICIencles oio oer saa vases Cereri Fe eae v oU eua ee YE e een Ceu ee ORE EEPEU EUN Ee N Ve e eue Una nee e eun aas 6 10 SAMI2A Standard Stainless Steel Liners esses sese 6 11 DOW ING OV AAI sca cadicsbatc iiam taa aa a 6 11 Typical Co detection performance eee tnt nnd 6 12 Probabiliby Sie ma di Yrs eieme obtutu ietes nde ho ote tct ben dies satel alld aan 6 12 Technical Description Circuitry
3. 1435 055 FA cen Select Calibration Thresholds to zi Eu E set the Detector Thresholds EH Ma e um cune Right Fioni Back EN EZB Resa f This screen allows the individual voltage of any detector to be viewed and updated To change any of the settings press in the field and update the value Press Apply Settings button to save or Cancel Changes button to quit without saving Note that no threshold value should be set to a voltage that 1s less than that of the preceding threshold For example Threshold 5 must be set greater than or equal to Threshold 4 Failure to follow this advice may invalidate measurements Please contact Thermo Fisher Scientific before changing threshold values Select Calibration Hv Power to ss A EM view the Amplifier Power am m EN ee ce oe This screen allows the lower and upper limits for the Hv Power to be viewed and updated It measure the current being delivered to the Hv Generator Select Calibration Attenuation to Mmm set a sequence to obtain Attenuation Factors note that a Phantom object is required for this process Attenuation Factors T Ere UA aged Femi Each HERS Oe Pes DE MITT i aculate Now Factors Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Operating Instructions To Calculate New Factors press iii iGo Calculate new Factors
4. Issue 1 0 An example of the SAM12 screen is displayed below Current Status Indicator User OPEN DOOR TO MONITOR ARTICLES Instructions Five light system Thermo Fisher BEEN sanding The SAM12 user screen displays the following e Headline and 2 plus current status indicator Note that some of these messages are user definable see Messages page 5 15 e User Instructions Note that some of these messages are user definable see Messages page 5 15 e Five light system which mimics the larger status indicator e SAMI2 press here to enter Administrator Mode page 5 e Battery Mains Supply Indicator page 5 64 e Operational Mode display bar this also gives a description of the selected menu in Administration Mode e Thermo Fisher Scientific branding Switch On When the SAMI2 unit is TU ee powered on the SYSTEM TESTING SELF TESTING message is displayed In this state diagnostics are run Sour to validate the state of the amp SAMI 2 to include Qut Of Femte Thermo Fisher Scientific Issue 1 0 Operating Instructions Instrument Configuration File validation XChannel device communication test 1 e checks communication with each peripheral Select calibration validity checks 1 e check efficiency factors are available for all detectors and that at least one valid alarm is set Database connectivity check i e check that the local database
5. Specification the SAMI2 detects a stable background see Changes to the Normal Background Monitoring page 5 49 When the mandatory 100 second background count has been accumulated the monitoring time required to achieve the specified alarm level is calculated Providing the monitoring time calculated falls within the maximum and minimum limits see Params 2 page 5 10 the instrument will be ready for monitoring If however the monitoring time calculated 1s greater than the maximum allowed a high background condition exists and monitoring will be inhibited A high background condition indicates that the alarm level set and statistical certainties required are not achievable under the current background conditions This may be overcome when either the background falls or more suitable operational parameters are entered by the Health Physicist It is advisable to check for residual contamination if this occurs unexpectedly Or persists The lower the background field the more sensitive stable and accurate the measurements will be Detectors Type 5569A Construction Large area scintillation counter using a plastic phosphor type BC408 wrapped in foil plastic and a aluminium jacket Thickness 2 25 57 mm Area 15 381 mm x 15 381 mm 225 sq 145 161 2 mm Photomultiplier 1 25 mm extended cathode Shielding 1 25 mm or 2 50 mm of aged lead on all external faces Energy 20 keV upwards minim
6. where Ract refers to the activity in the selected unit le nuclide mix Emix Enuc However where the user has created a mix with multiple nuclides E nix gt Sener ae where E 18 the efficiency of the system to a specific nuclide Pauc 18 the proportion of the specific nuclide within the total mix The uncertainty of the activity measurement is calculated as follows Ria N conf E mix where Noon 18 the number of confidence levels Thermo Fisher Scientific Issue 1 0 Quickscan Natural Background Reduction NBR Cobalt Coincidence Monitoring CCM Residual Contamination Thermo Fisher Scientific Level Technical Description Physics Quickscan is a method used to identify within the monitoring time Tinon Whether the article is either clearly contaminated or clear referred to as real dirty or real clean Quickscan is enabled on the Options sub menu see Options page 5 6 It is only activated when T mon Tmin The Quickscan period Tg is the time period after the beginning of the monitoring cycle at which the first time slice check is undertaken Subsequently further Quickscan checks will be undertaken at periods that are integer multiples of To e g 2To 3To until the end of the monitoring period The Quickscan period is set on the Params 2 sub menu see Params 2 page 5 10 If the Quickscan formula refer to Thermo Fisher 1s satisfied at any of the Quickscan checks t
7. Default OFF If this option is greyed out then your SAM12 is not configured to use Cobalt Coincidence Monitoring If you require this utility please contact Thermo Fisher Scientific for further information This option toggles the CCM menu on off If the CCM board is installed tick this option to enable the Cobalt Coincidence Monitoring See Cobalt Coincidence Monitoring CCM page 6 9 Note that it is not possible to tick CCM Enabled and Quick Scan at the same time Default OFF Note that this option is not HIGH ALARM available until High Voltages are selected during an HV Scan see HV Scan page 5 25 for further information Please Call HP 4050 Bg x 19 6 Bq Activity without NORM 2460 Bq Tick this option to enable the Natural Background Reduction NBR This will enable NBR algorithms to be used to determine the proportion of activity that is due to Naturally Occurring Radioactive Material NORM If the presence of NORM is detected then an estimation of its SAM12 User Manual 5 7 Operating Instructions Issue 1 0 activity shall be made and subtracted from the total activity to give a figure for artificial activity which will be displayed along with the total activity value Default OFF Auto Recount Tick this option to enable an automatic recount to be performed before a result if the following is true High Level Alarm measurement Normal Alarm Default OFF Manual Recoun
8. EMD Considerations The overall construction is designed to minimise the effects of mains and airborne interference and emissions It 1s therefore vital that the construction standard 1s maintained at all times particularly when replacing parts and during servicing Earthing is particularly important for continued EMC and Safety performance Hard earthing of the mains inlet filter assembly and LCD display tail the FHT681 HV Amplifier screening can and the frame earth are particularly important Refer to the relevant Servicing instructions in Routine Checks page 8 1 for details The instrument should only be operated with all earthing connections securely made and all screening covers fitted SAM12 User Manual 7 7 Issue 1 0 Chapter 8 Door Locking Mechanism if fitted SAM12 Mounting Arrangement Other Mechanical Checks Thermo Fisher Scientific Routine Checks Routine Checks This section describes the routine checks required to ensure the correct operation of the SAMI2 Most mechanical and electronic failures if they occur will become apparent during normal operation and do not require checking Therefore they are not included in this section Mechanical Checks Once a month or during source checks check the operation of the door lock if the option is fitted To do this perform a measurement with a source known to give alarms When the alarm occurs check the door 1s locked and remains locke
9. Note that the Maximum monitoring time must be Time s equal to or greater than Minimum monitoring time It must be set to a high enough value to prevent a high background fault This is the Maximum time for which articles are monitored A monitoring time is calculated by the SAM 12 to meet the background and the statistical requirements For given alarm and statistical requirements this parameter will limit the background count rate allowed To achieve a fixed monitoring time set the minimum and maximum monitoring times to the same value Values 3 to 300 s Default 100 s Measurement Start This 1s the length of time in seconds that the user Timeout s has to press the Start button after closing the door If the timeout is exceeded the SAM12 reverts to Normal Background Monitoring Values 3 to 360 s Default 10 s Quick Scan Period s This is the length of time in seconds for the Quick Scan to run see Options page 5 6 Values 3 to 60 s Default 10 s Background Logging Select an interval between 1 and 168 hours for the Interval hours SAMI2 to periodically log the background Select 0 to disable the periodic logging Note that each time a mandatory 100 second background is performed the backgrounds for each detector will be logged to the database Values 1 to 168 hours 0 to disable Default 0 Measurement The instrument uses this figure to calculate the Confidence o effective alarm level It is the
10. Archive to be saved To select archives to be saved highlight the archive on the screen by pressing individual names or press the Select All button Press the Save to File button to display the edit options window Select a Start End Date and enter an Archive Name and File Location Select the OK button to write the archives A confirmation will be displayed Select System Actions to take SAM12 out of Contamination Mode quit the application or shutdown the system Test Date 05 06 2007 12 02 59 Variance Mean cps 10650 207 30000 211 11620 184 3454 204 19030 200 39760 217 11 5834 hs mnl ET Deut ihe archro a bo be written i poss Select Al EE Deseleci All ern Please edit options for archive file s Start Date L 2 12 2008 End Date 12 12 2006 Archive Name Fila Location OK Back The archive files were successfully written to CASAM nmm Contaminated instrument E Dintabasa Backup Calibration ESE UU Exa Ta Syalum Adminis rmtor Login Shutdown Thermo Fisher Scientific Issue 1 0 System Setup Thermo Fisher Scientific Operating Instructions To clear a contamination press the Contamination Cleared button See Params 2 page 5 10 for information regarding the Out of Service Recovery Interval To backup a Calibration press Calibration and Configuration data has been the Backup Calibration button A confirmation message will be displayed Select OK to
11. Csi Cg is the counts registered in the last time slice Thermo Fisher Scientific SAM12 User Manual 6 7 Technical Description Physics Contamination Alarm Calculation of Activity and 6 8 Uncertainty SAM12 User Manual Issue 1 0 N is the Changing Conditions variable see Params page 5 8 It is not recommended that N should be set below 3 06 The first Changing Conditions check will take place after 2T and then after every second within the monitoring cycle where Tais the Changing Conditions period time slice variable see Params 1 page 5 8 After monitoring an article for the prescribed monitoring time Timon the effective contamination alarm level Certect 18 calculated as follows C e P a effect is Pon von The total system background count rate Begr is then subtracted from the total system gross contamination count rate Cgross and the remaining net contamination count rate compared with the alarm level So an alarm condition exists if Cons a Beg gt C effect The system will display both the activity of contamination on in the article and its associated uncertainty Both of these options may be enabled from the Options sub menu see Options page 5 6 The Activity may be displayed after any measurement as long as the evaluated activity is greater than the MDA The activity is calculated using the following formula R u C ross B eff Act X Act E mix
12. M is the Detector Changing Background variable see Params page 5 8 The default value for M is 7 It is not recommended that M should be set below 4 06 All four or six detector counts show a No change from their relevant stored averages in the same direction Ba Ca gt N N Baw where Bay is the rolling average for any one detector C is the counts registered in the last one second background update N is the Gross Changing Background variable see Params 1 page 5 8 It is not recommended that N should be set below 3 06 The former expression detects gross changes in any single channel while the latter guards against significant drift in all channels After every successful 10 second background update the average background for each channel 1s updated The four or six average backgrounds are then summed and a new monitoring time is re calculated as follows Cos Cac E Act where Act is one of the units below Zac 18S the corresponding multiplier Units Unit Multiplier Z Bq l kBq 1000 Dpm 0 01666 pCi 0 037 nCi 3 uCi 3 7E4 mCi S B4 Ci 3 7E10 Teca found by solving In practice the software solves this expression using a numerical substitution for Tea and iterative binary search technique The value of Tea which provides the solution is then Thermo Fisher Scientific Issue 1 0 Technical Description Physics rounded up to the nearest whole second and compared to the user progra
13. The drive also provides non volatile storage for all data e 4x USB connectors SK1 4 are routed to the user interface panel on the side of the main chassis e 4x isolated relay outputs are available on PL16 19 two which are used to switch the door solenoids e 4 x isolated inputs are available on PL24 27 28 and 29 two used to sense door status and two used to monitor the status of the door locks e 1x network interface SK6 routed to the user interface panel on the side of the main chassis e 1x CRT monitor connection on SK7 e x LCD drive on PL6 or SKI with backlight driver on PL7 e 1x RS232 driver for LCD touch screen on PL22 e x POWER connector PL13 e x Loudspeaker connection for sound generator on PL3 Additionally a plug in assembly type 5671A further extends serial communication to X channel devices via the RS422 2 2 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Description protocol as well as providing an I2C bus for driving the LED display s DC DC Converter Board Type 5675A A proprietary DC DC Converter pair produces regulated 5V and 12V outputs directly from the Battery Controller Board type 5660A Power 1s then distributed to the Controller Board 5670A Battery Controller Board Type 5660A The Battery Controller Board type 5660A manages the charging ofa 12 volt sealed lead acid battery The whole electronics system is powered from the 5660A Board T
14. cps This is the current background rate The value is set at 0 if a background has not yet been acquired Net Effective Alarm Note that this is a view only field Rate cps This is the effective alarm rate calculated using the Normal Alarm setting taking account of current Thermo Fisher Scientific Issue 1 0 Operating Instructions alarm conditions and background measurement see Alarms page 5 12 Timed Counts Select Diagnostics Timed Counts SSS ssa EZ to view Detectors averaged over aggg i ees a selected specified period This mem a function allows a count to be ES 24 5 2 a made which can be used to zc uum ascertain the efficiency and micans a ma functionality of the SAM12 NNNM ee To toggle between the individual Detector s Thresholds and the Gross Sum of all Detectors views press the Detectors Gross Sum button To Start the Timed Counts for the Detectors 1 Select the number of SAMI2 to be averaged by selecting a value in the Average Over field 2 If you require a Continuous count to be made tick the Continuous box 3 Press Start button To toggle between the Thresholds and Windows display tick the relevant radio button Variance Test The variance check is a method by which the overall stability of the background can be assessed by running a sequence of background measurements and then assessing the variance of the measured backgrounds over the sequence b
15. for each channel are correct 3 Checkthe cable connections between the Controller board and the HV amp Amplifier pcbs 4 Having performed checks 1 to 3 above select Diagnostics Detectors Bar perform a 10 second count and check the faulty channel s and note the counts Zero counts in a channel usually implies a complete failure in either the detector assembly or HV Amplifier PCB A few counts suggests either reduced detector efficiency or threshold problems in the HV Amplifier 1 Swap the faulty detector MHV connection from the relevant HV Amplifier to that of a working channel Perform a further 10 second count and note the counts in each channel 2 Ifthe fault moves with the detector into a previously working channel the fault 1s in the detector assembly Thermo Fisher Scientific Issue 1 0 Will Not Run amp Displays Out Of Service High Background Conditions Thermo Fisher Scientific Maintenance and Trouble Shooting and should be replaced as defined in FHT681 cards Removal and Replacement page 11 6 Ifthe fault remains with the original HV Amplifier channel the fault is in the HV amp Amplifier PCB and this should be replaced as defined in FHT681 cards Removal and Replacement page 11 6 This condition occurs when the Background activity prevents the SAMI2 from discriminating the pre set alarm level with the required confidence within the Maximum Monitoring Time allowed see Params 1 page
16. o p TT of options LL This option is only available when creating a new Calibration Source see below This changes the displayed activity units for the SAMI2 Last Calibration Date Select a Calibration Date from the date picker Activity Enter an Activity value Use the pre defined window to select a unit from one of the following dpm Comment Enter a Comment to describe the Source 1f required 5 20 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions To create a new Calibration Select a Nuclide and complete all fields below Source press New button to display the Select a Nuclide and Source Name LastCalbration Date i6June 207 S complete all fields below m c window Comment Select a pre defined option from the list provided and enter the required options see above for Description of options Select OK to create the new Calibration Source or Cancel to quit without saving Apply Cancel Settings Changes All calibration results are logged to the database The Calibrate function allows users to overwrite the Calibration factor The Cal Check function informs the user of any discrepancy with the current calibration factor To Check the SAM Calibration select a Calibration Source and Calibration Accuracy Calibration Source Huelide Edit RO00Bg Source cot 4 b New assess Acireity 2812 Bq Then press Calibrate button to C
17. the Administrator Mode page 5 1 as Health Physicist From the function tabs on the left side of the screen select the Calibration option Then from the tabs along the top of the screen select HV Scan There will be a choice between performing a New Scan and viewing the Last Scan Press the New Scan button The new screen allows for the setting of the scan parameters Start Stop and Step voltages as well as the counting time The recommended values for these parameters are Start 500 volts Stop 1200 volts Step 5 volts Time 10 seconds NOTE Short voltage steps are required in order to make the location of the optimum operating voltage easier Using the recommended values this process will take approximately one hour to complete Once there parameters have been set and the Start button has been pressed A series of onscreen instructions are displayed to step the user through the scan process Thermo Fisher Scientific Issue 1 0 Determining the operating voltage for mid high energy nuclides NBR method Figure of Merit FOM method Thermo Fisher Scientific Setting Up Procedure NOTE The scan can be aborted at any time by pressing the Abort button The scan is performed on all detectors simultaneously The first step is to perform a background scan This is followed by a scan with a Cs source placed as near the centre of the vault as possible On completion of the scan the
18. 4 0 Probability 96 41 97 13 97 72 98 21 98 61 98 93 99 18 99 38 99 53 99 65 99 74 99 81 99 87 99 90 99 93 99 95 99 966 99 977 99 984 99 989 99 993 99 995 99 997 Technical Description Physics This probability refers to either the Probability of Detection or the Probability of NOT triggering a False Alarm These probabilities are calculated and displayed in Params 2 page 5 10 SAM12 User Manual 6 13 Technical Description Physics Issue 1 0 SAM12 Four Detectors and 1 0 Lead Efficiencies to 60Co as Viewed from Front Source 232 5 mm from Door CENTRE H7 H6 o 3 M 5055 Ho 5 El 45 50 S D 40 45 E O 3540 eg O 3035 5 El 2530 pe B 2025 H3 o o n H2 H1 W1 W2 W3 WA W5 W6 W7 Position Along Width of SAM12 Figure l Front Spatial Response SAM12 Four Detectors and 1 0 Lead Efficiencies to 60Co as Viewed from Side Source 189 mm from LHS CENTRE H7 FRONT H6 N o Bl 50 55 HS E 45 50 E 40 45 Hd O 35 40 O O 30 35 D 2530 H3 S B 2025 o H2 Position Along Depth of SAM12 Figure 2 Side Spatial Response 6 14 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Technical Description Physics SAM12 Type Test Data Four Detectors And 1 0 Lead Variation in Efficiency Along Centre Axis Front to Back 96 Efficiency 1 2 3 4 5 6 7 8 9 10 Position of Co So
19. 5 45 Using the Touchscreen Functions 5 1 V Variance Test 5 17 Vault 5 18 Version 5 41 Thermo Fisher Scientific
20. 5 8 Enter a valid password and proceed as follows l Select Setup Params 2 and check the Maximum Monitoring Time is set to a reasonable value Adjust it upward if necessary select Setup Alarms and check the Normal Alarm level is set to a reasonable value Adjust it upward if necessary Select Setup Params 2 and check the Probability of False Alarm is set to a reasonable value Reduce it if necessary Select Setup Params 2 and check the Probability of Detection 1s set to a reasonable value Reduce it 1f necessary Select Calibration HV Scan and check the High Voltage settings of ALL six detector channels are correct Select Setup Params 2 and set a 10 second Minimum Monitoring Time Check the counts in all four detector channels are reasonable for the expected ambient background level using Diagnostics Detector Bars Ifasingle channel shows a background count significantly greater than the other detectors a noisy channel or a light leak 1s likely Proceed as follows e Swap the faulty detector MHV connection from the relevant HV Amplifier to that of a working channel Perform a further 10 second count and note the counts in each channel N B Bear in mind the different operating voltages e Ifthe fault moves with the detector into a previously working channel the fault is in the detector assembly and should be replaced as defined in Removal page 11 9 If the fault remains with the original HV Amplifier cha
21. Fisher Scientific This report shows the Background Rate Trend between the selected Start and End Dates It is possible to limit the report by Start and End Date Background Measurement Summary 420 320 220 Coun Rale 120 06 01 2007 QB O1 2007 10 01 2007 12 01 2007 14 01 2007 16 01 2007 reps 66 6 ad 14189 14189 14187 14185 14184 14183 14182 14181 14180 14179 14178 14177 Background Rate Trend 16 01 2007 15 05 11 01 2007 14 15 11 01 2007 14 14 11 01 2007 13 43 11 01 2007 13 43 10 01 2007 08 14 10 01 2007 03 14 Qarg1 2007 16 00 08 01 2007 15 58 03 01 2007 15 10 Q3r01 2007 14 59 05 01 2007 14 58 03 01 2007 11 06 True True True True True True True True True True True True True Operating Instructions Press on one of the ID records to display the Background Measurement Detail for the selected Measurement ID SAM12 User Manual 5 33 Operating Instructions Issue 1 0 Background Measurement Detail Background ID 14188 Date Time 11 01 2007 14 15 back 1 back 2 100 back 3 100 back 4 0 6 100 bottom 75 0 100 bottom 1 25 0 100 bottom 2 17 1 100 bottom 3 13 0 100 bottom 4 0 7 100 front 66 5 100 front 1 28 7 100 front 2 19 6 100 front 3 13 1 100 front 4 05 100 left 0 58 0 100 left 1 29 1 100 left 2 19 4 100 left 3 12 9 100 left 4 0 6 100 right 0 66 0 100 right 1 26 4 100 right 2 18 6 100 right 3 13 4 100 right 4 05 100
22. IC1 Sound Amplifier 7 2 SAM12 User Manual Issue 1 0 LK8 Write protect facility LK7 Define as Master option 1 Giga Byte minimum capacity Power connector PL26 Power connector PL26 Power connector PL23 IC9 is a Programmable Logic Device PLD providing the following l A 4x 4 keyboard interface 2 I O expansion bus to PL15 3 Control of 4 independent change over contacts on PL16 17 18 amp 19 4 4x optically isolated sense inputs on PL24 27 28 amp 29 5 A windows type Key bleep on PL21 6 A watchdog output via TR in parallel with the on board reset switch S1 IC6 amp IC8 provide for RS232 voltage levels on PL8 amp PL9 DTR Data Terminal Ready RTS Ready to Send DCD Data Carrier Detected Clear to Send Data Set Ready ICI provides for a loud speaker drive on PL3 from the on board ET X sound signal generator Thermo Fisher Scientific Issue 1 0 IC2 amp IC3 USB power controllers IC5 LCD Power and Control IC4 EEPROM Display facilities Inputs Outputs Introduction Thermo Fisher Scientific Technical Description Circuitry Provides for two independent power sources with current limiting for USB peripherals Not used SK7 VGA CRT display interface SK1 LCD amp Touch Screen display interface compatible with 5663A Summary of the controller board inputs Input Connection Function Solenoid Status dirty IP3 PL28 Door Switch clean summary of
23. NER dE A EU MEME E UA CE DUM 8 2 Display Cheek Sasso o nlt nost dee CUM A EIL Ue I MM LE ME 8 2 EMC amp Safety Earthing Checks oer it E anie am 8 2 Periodic Source Chet kS siesscazsdessdeiaincicass datasstvicanassedad ndsteeunacasa TL 8 2 Regular Source CHECKS sisi ccdiciadeticcccscescesedasicsscsssaneve detccecuansaaeeedesuucauadeanenadantdesoasuncesesseuseteoseoussucetous 8 3 Cleaning DInst FUCHS ssedecescsacctacesttccrasscadencssoatsevesacesctoswess cave dos NE aD estie ae sis dioi Ip EDI 8 3 Chapter 9S Setling UD ProceQune sisse 9 1 Mnitial Seine Up TOF USO deiude ooi oec uoi eco oia ioci eie e e eoo doo ica io oe ooa eode PNP a cese Eoo deo 9 1 Eu MER Q REDE 9 rifttalfsdlloTE sie eoses a as n cS usb ida bci a ee tcs ee 9 Sene PasswoOLussusnis sion uic diae oiim p a e Male ut ie ure 9 1 setting the Operational Paramelets i ee el E AE A RES Se UR Odes 9 2 Selection of Detector Operating Parameters eee e eee ee eee eee eee eee teet esee eese eese esses aaae 9 3 Detector HV Selec OL oso t esses un bae ien itunes E ELI 9 3 Derivation of the Optimum Operating Voltage seen 9 4 Variance ESTE UT M eme 9 7 Sette the NBR parameters corto e i eter aime eae EUR RA Ud 9 8 Chapter 10 Calibration Procedure eee eeeeee eene eene ennt 10 1 Calibration Validil y 52i ih Ee Etro ieri bati neta
24. Notes regarding Normal When the SAM12 is not monitoring an article background is Background Monitoring monitored in 10 second periods each measurement contributing to a rolling average produced over a fixed 100 second period 1 e 10 measurements Measurements subsequent to the 10 are added to the results store with the oldest being discarded In this way a mean background is stored and constantly updated for each of the detectors see Background Update page 6 5 for more information These values are summed to give an overall mean Background value for the whole system Changing or High background conditions can arise from these checks see Notes regarding Changing Background page 5 51 and Notes regarding High Background page 5 62 for more information If a 10 second period 1s interrupted for example by opening a vault door the current 10 second average will be discarded Changes to the Normal If a change in the Normal Background Monitoring Background Monitoring is DESSIN peace eels detected SAM12 will acquire a new background and the Updating Background message is displayed 49 Seconds Remaining Please wail See Notes regarding Changing Background page 5 51 for more information regarding acquiring a background Qut Of Femte Thermo Fisher Scientific SAM12 User Manual 5 49 Operating Instructions 5 50 SAM12 User Manual Issue 1 0 When a new Background has been established the Ready Read
25. Scientific Diagnostics Data Menu Reports Operating Instructions for the CCM Channel only Measurement Period Note that this is a view only field s This is the length of time for the sample calculated from the current alarm conditions and background measurement for the CCM Channel only Background Rate Note that this is a view only field cps This is the current background rate for the CCM Channel only The value is set at 0 if a background has not yet been acquired CCM Efficiency Vo Note that this is a view only field This is the Efficiency for the CCM Channel Net Effective Alarm Note that this is a view only field Rate cps This is the effective alarm rate for the CCM Channel calculated using the CCM Alarm setting taking account of current alarm conditions and background measurement see Alarms page 5 12 Select CCM Diagnostics to view EE the activity on the CCM Channel E This function allows a count to E be made which can be used to ascertain the efficiency and functionality of the SAMI2 Timed Counts Telal COM Rae 185 Comecied CCM 18 5 Gras Court Rate 14153 Ca 80 Count Rata 1582 5 arbitrary 0 000727 Average Cor samples fro ua ltl I B Continuous Stari to Thermo To Start the Timed Counts for the Detectors 1 Select the number of SAM12 to be averaged by selecting a value in the Average Over field 2 If you req
26. THE MAINS SUPPLY TO THE SAMI2 AND WAIT 1 MINUTE AFTER SWITCHING DOWN THE SAMI2 BEFORE REMOVING THE TOP COVER To gain access to the 5689A Electronics Chassis components the Top Cover must be removed To do this remove the 2 screws securing the top cover to the Electronics chassis Lift the top cover clear of the Electronics chassis When carrying out major Servicing work on the 5689A Electronics Chassis it may be advantageous to remove it from the SAMI2 The chassis 1s quickly and easily removed from the main frame as follows and since the assembly is complete stand alone testing 1s also possible Remove the top cover as described in Removal of the Top Cover page 11 3 Disconnect the detector coaxial connectors from the HV and Amplifier pcbs Disconnect the door micro switch and locking gear cables 1f fitted Remove the protective cover from the HV amp Amplifier pcbs Release the four bolts securing the Electronics chassis to the Main Frame The Electronics Chassis is now free and may be lifted clear of the Main Frame CAUTION THE ELECTRONICS CHASSIS TYPE 5689A WEIGHS ABOUT 45 LBs 20KG SO CARE IS REQUIRED WHEN LIFTING IT OFF THE MAIN FRAME SAM12 User Manual 11 3 Maintenance and Trouble Shooting Removal and Replacement of the Power Supply Power Supply Replacement 11 4 Adjustment of PSU SAM12 User Manual Issue 1 0 When refitting the 5689A Electronics Chassis 1n the Main Frame ensure e All four
27. a resolution of about 1 Volt The charge pulses arriving along the high voltage cable from the detectors are amplified and each fed to five discriminators SAM12 User Manual 2 3 Description 2 4 SAM12 User Manual Issue 1 0 and five associated counters all controlled by the microprocessor on the main board The cards are interrogated via the X channel bus to retrieve counter values generated every 100ms from a 5 second buffer A digital output from each channel 1s fed to the CCM card type 42543 0224 such that coincidence on any two detectors can be registered This allows measurements on Cobalt 60 FHT681 Coincidence Detector Card Type 42543 0224 The card can support coincidence from 6 detectors via the digital outputs of the HV Amps By setting relevant summing thresholds on the card coincidence from two detectors only can be supported The cards are set up and interrogated via the X channel bus Visual Indicator LED PCB Type 5672A This assembly provides the rear and front optional visual display necessary to inform the user of progress through the instrument Thermo Fisher Scientific Issue 1 0 Chapter 3 Thermo Fisher Scientific Specification Specification The standard SAMI2 with stainless steel liners 1s available with three options in any combination e 4or 6 Scintillation Counters C e lor2 Doors D e lor2 inches 25mm or 50mm of lead shielding L Therefore the SAMI2 type nome
28. absorb the secondary x rays produced by gamma s absorbed by the lead An attenuation factor facility exists to compensate for stable directional background influences and for shielding effects of known waste containers The background is measured accurately by monitoring over a long period This is achieved by taking a series of 10 second background counts and averaging over 100 seconds The background count is updated with a new count every 10 seconds to maintain a rolling average Statistical checks on each background value guard against sudden changes The average count 1s stored and used for background subtraction software facilitates automatic calculation of monitoring time and programmable probabilities of False Alarm and Detection Alarm levels and Efficiency Correction factors A facility known as Quickscan when enabled will identify whether the article is either clearly clean or contaminated within a time period very much shorter than the evaluated worst case monitoring time Five user definable discriminator thresholds are available which allow the rejection of interfering high SAM12 User Manual 6 1 Technical Description Physics Spatial Response Introduction Description of Parameters 6 2 Used in Calculations SAM12 User Manual Issue 1 0 energy photons from cosmic radiation and consequently improve MDA of selected radionuclide contaminants In addition these discriminators may be used to ident
29. and amplifier boards High voltage also exists on the LCD backlight and in the inverter enclosure The 12 v battery stores considerable energy so care should be taken not TO short the terminals Please read the cautionary notes in Servicing of the Electronics Chassis Type 5689A page 11 3 In general a successful start or boot up when the SAMI2 key switch is turned ON is indicated by e aseries of System Self Test display messages e aseries of lamp tests each accompanied by a beep tone e aseries of internal invisible self tests e asingle chime ding dong on satisfactory completion Thermo Fisher Scientific Issue 1 0 Unit dead will not boot up amp charging LED is OFF Unit dead will not boot up amp charging LED is ON Thermo Fisher Scientific Maintenance and Trouble Shooting If the display remains blank and unlit no lamps are lit and no sound is heard assuming the volume has not been turned off it would indicate that the SAMI2 is dead LED OFF indicates the AC mains supply is OFF and instrument cannot run off the battery 1 Check the fuse on the 5660A charger PCB FSI 2 Ifthe fuse is intact the battery 1s probably discharged Check the voltage at PL4 on the charger PCB If it 1s below 11 2 volts the battery 1s discharged and the charging supply must be restored before further operation 1s possible Restoring the AC mains charging supply should light the LED
30. and allow the system to run while charging the battery 1 Check the AC mains power cord is connected 2 Check the fuse in the mains adapter 1f fitted 3 Check the power supply is receiving the mains supply 4 Check the power supply output on 5660 PLA temporarily remove from pcb to check no output indicates the internal fuse has blown and the power supply should be replaced see Removal and Replacement of the Power Supply page 11 4 5 Check the output on PL3 of the 5660A charger PCB it should be greater than 12 5 volts LED ON indicates the AC mains supply is ON and should be powering the instrument while charging the battery 1 Retry switching the unit ON 2 Check the fuse on the 5660A charger PCB FSI 3 Check the battery voltage is greater than 12 5 volts 4 Check there is battery volts on OUTPUT connector PL6 If no output is observed on PL6 a fault on the Charger PCB is indicated and it should be replaced as detailed in Section 11 2 5 5 Check the power connections from the 5566A Charger PCB to the 5565A Controller board 6 Check the regulated 12 V 12 V amp 5 V outputs from the DC DC converter module 5675A The DC DC module is not user serviceable and if faulty the Converter board should be replaced as described in Controller Board type 5670A Removal and Replacement page 11 6 SAM12 User Manual 11 13 Maintenance and Trouble Shooting Starts up but Display is Blank amp Fail
31. and should only be changed in consultation with Thermo Fisher Scientific Alarms Select Set Up Alarms to selet 7 ie ERES the Active Calibration Stream TM ene and set the alarms T Cabibiata Mu 3 Make Actvm n Coie Calibramon Gana DTe Gee wiegt Ks ee SOCGADINSIS FU ee ger ee ciant Formal Alarm EZ B High L vel Alarm CUM Alkim ag B CCM High Laval Alarm Bg E Enable Description of options Calibration Nuclide Use the direction arrows to change the Calibration type When the type is correct select the Make Active button Note that a description of the Calibration Type is displayed in the field below Normal Alarm This is the detected activity at which SAM12 will default unit indicate an Alarm Values 0 to 10 000 000 Any unit 5 12 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions EE Default 5000 0 dpm High Level Alarm This 1s the detected activity at which SAMI2 will default unit indicate an High Level Alarm The Enabled tickbox must be checked for this option to take effect Values 0 to 10 000 000 Any unit Default Must be input CCM Alarm default This field is enabled if CCM Enabled is ticked see unit Options page 5 6 This is the detected activity at which SAM12 will indicate a CCM Alarm Values 0 to 10 000 000 Any unit Default Must be input CCM High Level This field is e
32. button to ET Attenuation Factors display the Ready to Start EE window Casson Remove all items From the Vault lt and Press Start RL m Stan Abort Remove all items from the SAM 12 and press the Start button to commence measuring the e EU ve empty vault 00 00 30 The SAMI2 measures the Empty Vault and the calculated count Attenuation Factors time decrements aver The progress window is Attenuation Factors displayed until the Empty Vault Measurement Complete window Empty Vault Measurement Complete is displayed Insert the Phantom Insert Phantom Sample Sample into the vault and press ano rece suar the Start button to comment measuring the vault with the Phantom present Start Abort A progress window is displayed until the Attenuation Factors 1s di splayed Measuring Vault with Phantom Present 00 00 50 Attenuation Factors Attenuation Factors Tan Bosa Lat Fugit fnm ak 3352 8 T0003 8 939 75 amp 109 9s 100 148 83 01 Thaahod 1 Meh 40002 amp FO 108 50 100 Soo Sa mI Wi kB na qu 5 wid EC Tirai U 1D 1555 050 24 SER SS TOS TO TO ET 8 Save Cancel To Save the Attenuation Factors press the Save button If the Attenuation Factors are Invalid Attenuation Factor calculated invalid the following error Factors have not been saved F T Please try again message 1s displayed and it is not possible to save the factors SAM12 U
33. calibration stream It is not essential that the percentage of all the nuclides entered adds up to 100 In this situation the SAMI2 will assume the unidentified percentage 1s due to undetectable nuclides such as Fe and adjust the overall percentage efficiency to the mix appropriately Troubleshooting CHECK IMMEDIATE AREA AROUND SAMI2 FOR A LOCAL SOURCE OR DIRECTIONAL BACKGROUND FIELD SHINE The background operating voltage may be adjusted in steps of 25 V for a particular detector in order to increase or decrease the background response to be more consistent with the other detectors HOWEVER ANY ADJUSTMENT OF THE VOLTAGE WILL INVALIDATE THE CCM AND NBR MODES WHICH MUST BE SET USING THE METHOD DESCRIBED IN Selection of Detector Operating Parameters page 9 3 If only one of the detectors is outside the required value change the relevant HV setting as described in the previous section AGAIN ANY ADJUSTMENT OF THE VOLTAGE WILL INVALIDATE THE CCM AND NBR MODES WHICH MUST BE SET USING THE METHOD DESCRIBED IN Selection of Detector Operating Parameters page 9 3 significant deviations form the expected efficiency indicate a faulty detection assembly and remedial action should be taken Thermo Fisher Scientific Issue 1 0 Chapter 11 Power up Screens Self Test Screens Thermo Fisher Scientific Maintenance and Trouble Shooting Maintenance and Trouble Shooting Fault Messages The fault message
34. close the application To exit the SAM12 application press the Exit to Application Login button A confirmation message will be displayed Select OK to close the application This action will close the application Are you sure you want to do this To shutdown the entire system press the System Shutdown button A confirmation message will be displayed Select OK to shut the entire system down Select System Setup to set the Mmm location volume date time and time zone To change the Location enter the location using the alpha numerical field To adjust the volume move the orange bar to the left to decrease the volume and to the right to increase the volume To test the volume press on the loudspeaker icon To change the Date press on the date field and select a date Note that the format of the date depends on the Language type selected in Options screen see Options page 5 6 Select the Apply button to save To change the Time use the Up Down buttons to change the hours and minutes Select the Apply button to save To change the Time Zone press on the TimeZone field and select a time zone from the pre defined list Select the Apply button to save SAM12 User Manual 5 41 Operating Instructions Version Passwords Data Retention 5 42 SAM12 User Manual Issue 1 0 150735 NEN INI Te Select System Version to view EXC CSc e SAMTZ Venion 6 3 0 0 the File version
35. diagnostics the SAMI2 establishes a new Background see Establishing a new Background page 5 48 The system enters the Background Monitoring Mode see Normal Background Monitoring page 5 49 A user places articles to be monitored inside the vault and closes the door see Door Operations page 5 51 Monitoring starts as a result of the Start button being pressed see Commence Monitoring page 5 53 Monitoring continues for a period determined by the required confidence levels and the current background Monitoring may be interrupted due to the result of a QuickScan assessment see Options page 5 6 or if a significant change in background conditions is detected during the measurement see Background Change during Measurement page 5 54 At the end of the Monitoring period activity is calculated and compared against a set of alarm thresholds A simple Go No Go indication is given along with details of the measured activity Ifthe activity is above the alarm threshold NBR algorithms are used to attempt to determine the proportion of activity that is due to NORM see Monitoring Result page 5 55 The user removes the article from the SAMI2 see Remove Articles page 5 61 SAM12 User Manual 5 45 Operating Instructions 5 46 User Screen Headline 1 Headline 2 Operational Mode display bar Battery Mains Supply dicato e Clear SAM 12 sam Yo h Start Up Checks SAM12 User Manual
36. information including the SAM12 Issue and zy Version numbers i a mm N E Select System Passwords to ee EE change the passwords for the Change Password current User Level and levels EE below Select User Haath Fiyat Enter Password sae 5 7 I Thermo There are three levels of user Health Physicist Technician and ThermoFisher The SAMI2 is supplied with unique default passwords for each level please contact Thermo Fisher Scientific for further information To change the Password for a select User press in the Select User field to display the user roles Select a User and select OK Enter a Password and confirm the Password Ensure each password level has a unique Password under no circumstances should all three roles be assigned the same password Select System Data Retentionto te Gas save the specified data for a set number of months Background Data etanan i3 mentha Results Data Rateniben HB mantha Calibration Daia Aeian on 34 monihs Cal Check Data Remetos 0 monha Everi Log Dota Ratenticn O mantha R Enter the length in time months for how long each type of data is to be retained Data is automatically deleted that is older than the specified time The following data types are displayed e Background Data Retention months e Results Data Retention months e Calibration Data Retention months Thermo Fisher Scientific Issue 1 0 Oper
37. nm o 8mB5sbhHuB 1200 let Counts 3588 ss l RN TRI m e a a a S 700 750 amp o 9 9D 1x0 ii Fis 825 8 5 gas ors Valtage v Background 3Ource Mat Figure Of TUT T2 T Counts Counts Counts Merit 108 508 460 255 7 480 0 1 0 105 611 S06 272 B 158 7 3 0 106 621 515 AB 515 0 1 0 117 dd 527 281 2 527 D 0 5 113 543 535 2908 1 535 0 1 0 118 572 554 EN 4 554 0 1 0 117 572 555 298 3 277 5 2 0 126 706 550 3104 183 3 0 68 132 720 555 313 3 294 0 2 0 132 731 5d 320 0 148 8 1 3 126 re 534 343 B 317 0 2 0 134 via 640 344 4 320 0 D 7 135 TU b42 3452 542 0 1 0 132 ao bb5 360 6 221 7 1 0 131 rog boy 355 1 3m 5 D 7 160 1024 Bb 473 5 66 5 6 5 155 1035 arg 474 6 458 19 0 163 1045 BB2 483 5 258 34 0 171 1061 Ban 455 0 24 1 37 0 168 1082 914 501 5 15 5 13 8 172 1078 206 494 5 12 4 24 3 172 1082 810 aor 2 10 1 80 0 170 1075 ans 434 9 iB 116 0 174 1100 926 5e 4 5 5 35 0 155 1108 942 520 3 5 4 245 1 5 1112 quy 512 8 50 62 3 190 1112 922 49 3 46 66 3 198 1098 aji 481 5 40 13 0 183 1123 934 505 1 37 525 23 1153 950 503 7 af 37 0 218 1161 943 600 4 33 31 8 415 1158 954 505 0 3 2 30 2 SAM12 User Manual 5 37 Operating Instructions 5 38 Instrument Configuration SAM12 User Manual Report Configuration Settings on 21 December 2006 Configuration Item Enable Auto Recount on Alarm Background Logging Interval hours Calibration Check Accuracy Default Calibration Accuracy 56 Default Calibratio
38. number of standard deviations measured against the Alarms see Alarms page 5 12 Values 0 1 to 7 sigma in 0 1 sigma steps Default 2 o Out of Service When the unit 1s Out Of Service page 5 62 the Recovery Interval system automatically clears the error after the Out mins of Service Recovery Interval has passed Select 0 to disable the Recovery Interval Values 0 to 60 mins Default 0 Params 3 Thermo Fisher Scientific SAM12 User Manual 5 11 Operating Instructions Issue 1 0 11 41 22 TE repu Select Set Up Params3 to ZEE CIZI MIE Satings customise the third set of THE S o s 1 Upper Lim 0 Operational Parameters EE come sa EM EJ Lower Lima 2 50 m EN a e Defsuk Calbratom Accumey fi Cabbrabon Confidence E go BRABDA stein _ cheno f Thermo Description of options Field Name Description NBR Settings These are factors used to determine if Naturally Occurring Radioactive Material is present Default Calibration This is the default Calibration Accuracy used in the Accuracy Calibration Check utility see Cal Check page 5 19 Itis used along with the background measurement determines the count time required with the SAM12 is being calibrated Values 0 5 to 10 in 0 1 steps Default 1 00 Calibration This factor affects the monitoring time of Confidence 6 calibration Values 0 1 to 4 sigma in 0 1 sigma steps Default 2 Note that this section 1s set by at production
39. of catch shim by adding or removing 0 05 0 1mm laminates to equal the difference between dimensions A and B If the required catch shim thickness cannot be obtained then the position of the SAM12 User Manual 11 11 Maintenance and Trouble Shooting Normal Start up Boot up 11 12 Operation SAM12 User Manual Issue 1 0 catch strike block must be adjusted by one turn 1 6mm and the procedure repeated 8 Apply Dow Corning primer 1204 to rear surface without edge chamfers of stop block and mating surface of frame and allow 2 hours to dry Apply Dow Corning RTV 3145 adhesive to rear of stop block and position stop block on frame 3mm below and 2 5mm to the left of the RH edge of solenoid catch block Close Door and allow Adhesive to cure for 12 hours before opening Door Note Adhesive may take up to 72 hours to fully cure 9 Measure the gap between door and stop block and adjust thickness of catch shim until gap 1s less than 0 2mm 10 For units with one door secure switch assembly to the frame and close door For units with two doors check switch operation as detailed in Section 11 4 3 11 Replace and secure main liner Trouble Shooting This Section covers a number of possible operational problems their likely causes and possible remedial action WARNING EXERCISE EXTREME CAUTION WHEN SERVICING There are dangerous mains voltages around the power supply module and very dangerous high voltages on the HV
40. of the instrument Please Call HP If the CCM board is installed and J the CCM option see Options page 5 6 1s selected when the iiletsddssiiis CCM alarm see Alarms page 5 12 1s exceeded the Co60 ALARM message is displayed Co60 ALARM Note that this message is user definable see Messages page 5 f E 15 for further information Also an alarm will sound for 3 seconds even if the door is opened If the Lock Front Door on Alarm is set to All Alarms the door will be locked and can only be opened Thermo Fisher Scientific Issue 1 0 Operating Instructions with intervention by an Administrator See Doors page 5 13 for more information regarding Lock Front Door on Alarm If the CCM board is installed and the CCM option see Options page 5 6 1s selected when the Bess High Level CCM Alarm see Alarms page 5 12 1s exceeded the High Co60 Alarm message 5 9 will display HIGH Co60 ALARM Note that this message is user definable see Messages page 5 15 for further information If the Lock Front Door on Alarm is set to High or All Alarms the door will be locked and can only be opened with intervention by an Administrator See Doors page 5 13 for more information regarding Lock Front Door on Alarm On a two door SAMI2 the front door will be locked and back door will be unlocked Also a high alarm will sound for 5 seconds If the Lock Front Door On Alar
41. protected beneath a metal shield which can be removed by undoing 4 screws in the top of the cover From left to right the cards are organised as e Coincidence detector 1 only e HV and Amplifier for detectors TOP amp BOTTOM Amp 1 e HV and Amplifier for detectors LEFT amp RIGHT Amp 2 e HV and Amplifier for detectors FRONT amp BACK Amp 3 Before attempting to remove any FHT661 board switch the SAMI2 OFF and wait I minute for the HV to discharge before beginning work The board mountings are identical To remove any PCB first disconnect the 9 way Dee then release the MHV coax detector connector and the BNC coincidence cable for the HV and amps card or the 9 way Dee and the mating BNC connectors for the Coincidence card Carefully prise each pcb from it s mounting spacers Replacement of any of the boards 1s the reverse of the removal procedure Ensure the colour coded detector cables are matched to the correct amplifier connector PMT1 or PMT2 e LEFT is Orange PMTI RIGHT is Yellow PMT2 e FRONT is Red PMTI BACK is Violet PMT2 e TOP is Green PMTIBOTTOM is Blue PMT2 It is not important which coincidence port is connected to which amplifier output What 1s important 1s the identity of the card and the detectors connected to it If any Board is thought to be faulty it should be returned to Thermo Fisher Scientific s service department for repair NOTE All cards MUST be linked using the cables originall
42. regular servicing However in the event of failure their removal and replacement is obvious See Recommended Spares List page 12 1 for component details WARNING Unplug the mains lead and disconnect the battery to avoid the SAMI2 switching on inadvertently as the start switch connector is unplugged Detector Removal and Replacement NOTE The detectors are light sensitive and because of this are contained in a light tight enclosure Care must be exercised at all times not to damage the enclosure as subsequent damage to the photomultiplier tube may result due to light leaks Disconnect the mains supply Ensure the key switch on the rear panel 1s in the OFF position Open the door and remove the screws retaining the stainless steel cubicle Liner to the Main Cabinet frame Removing the Stainless Steel Liner from the Cabinet to exposes the detectors Undo the wing nuts that hold the detectors in place and slide the detector to the rear of the SAM12 When space allows disconnect the detector coaxial cable The detectors are held in place by 4 lugs when the detector is free of the lugs it may be lifted out TAKE CARE THAT THE DETECTOR DOES NOT FALL Replacement of the Detectors follows the removal procedure in reverse Again care must be exercised not to break the light tight seals Once the detectors are in place refit the stainless steel liner Replacement detectors or detectors with replacement PMT s will need
43. see CCM T N TNT Sec s Menu page 5 30 is installed A n b during a Co calibration both the CCM channel and all the detectors are calibrated at the same time This may lead to slightly extended counting times due to the lower CCM channel efficiency Isotope gamma efficiencies The following data were obtained during type testing in a stable 7 10 n R h 0 07 0 1 uSv h Background using pant sources in Thermo Fisher Scientific Issue 1 0 SAM12A Standard Stainless Steel Liners Low Energy Variants Thermo Fisher Scientific Technical Description Physics free space 1 e un attenuated The detectors were optimised for each Isotope in the geometric centre of the measurement cubicle Efficiencies are quoted Centre geometric centre of Measurement Volume and 3 inches centre of Measurement Volume 3 from floor Nominal Value quoted with maximum spread in brackets Door configuration has a small usually insignificant effect on 6 detector efficiencies Table I Standard SAMI2 Standard Stainless Steel Liners 70s 662 Ba 356 Variant keV keV ACXD 350eps fas 40 17 ie 28 26 XD Low Energy Variants have 6 detectors 2 inches 50 mm lead shielding and an additional 2mm Copper X ray absorber Note mu metal magnetic shielding is removed for maximum sensitivity Table 2 Low Variant SAM12 Energy Variants Total Total Bgnd Am 59 keV Total Bgnd Am 59 keV 5
44. the controller board outputs Connection Function OUTI PL16 Door Interlock Magnet dirty OUT2 PL17 Door Interlock Magnet clean Battery Controller Board Type 5660A Battery Controller Board type 5660A 1s shown on assembly diagram C91799 A This 1s an X channel device which enables the operating system to monitor the charging process and remotely shut down the load The Battery Controller Board type 5660A controls the DC voltage output of a power converter unit PL4 between the range 11 2 V to 15 6 V in order to maintain the integrity of the 12 V 15 Ah Lead Acid Battery PL3 over the operating temperature range temperature sensor on PL1 The 5660A has the ability to switch the load PL6 ON OFF as directed by the operator whilst continuing to charge the SAM12 User Manual 7 3 Technical Description Circuitry Scintillation HV amp Amplifier 74 Keyswitch operation SAM12 User Manual Issue 1 0 battery Current and voltage monitoring IC100 101 and control circuitry ICA always ensure sufficient power is made available to power the SAMI2 even when the battery 1s exhausted from the primary power source The transfer to battery is automatic However the load will be removed when the battery terminal voltage falls bellow 10 5 V This circuit is required to prevent the battery being damaged by being deeply discharged Hysteresis 1s built 1n to this circuit to prevent oscillations It does not allo
45. the probability that the observations show a greater deviation from the Poisson distibution than would be expected from chance alone USE Enter graph with number of observations and R F Corresponding point represents value of P If P lies between 0 10 and 0 90 instrument operation is probably satisfactory If P is less than 0 02 or greater than 0 98 instrument is not operating satisfactorily 10 15 20 29 30 Number of Observations Figure 11 Statistical Limits of Counter Reliability Thermo Fisher Scientific SAM12 User Manual 9 9 Issue 1 0 Calibration Procedure Chapter10 Calibration Procedure This section deals in detail with primary system calibration It includes background source and efficiency checks on individual detectors to check detector balance as well as overall system efficiency Primary system calibration by the Health Physicist is only usually necessary on initial installation and on a periodic audit basis More frequent overall system calibration checks can be quickly carried out by Technician user level using the Cal Check facility see Cal Check page 5 19 For more information regarding the user roles see Foreword page 1 and Menu Roles page 5 5 Note Throughout this section examples are given in Bq However by first selecting nCi s from the Options Menu see Options page 5 6 as the operating units all values may be entered in these units Of course the equations remain unchanged thou
46. the rear panel to the ON position and remove the mains power cord Remove the top cover and connect a suitable Voltmeter set to the DC volts range directly across the battery terminals Check the load battery voltage 1s greater than 12 volts assuming the battery has previously been charged If the battery voltage 1s low consult Troubleshooting page 10 4 Replace the top cover Alternatively the battery voltage and load can be monitored see Battery page 5 14 for further information NOTE Only qualified personnel should operate the SAMI2 with the mains connected and the cover removed Make sure all the warnings given at the front of this manual are heeded During calibration ensure all lamps are operational see Vault page 5 18 for further information It may be necessary at some time due to replacement of Touch Screen or Touch Controller to re calibrate the touch screen This is an Administration function and the facility would be accessed outside of the application program Periodically and after Servicing check all Earth connections are fitted and tight to ensure continued EMC performance and User Safety These checks should include the screws securing the mains inlet filter assembly to the rear panel all connections to the central earth point CEP and the connection to the Main Frame Also check that all screening covers are fitted and all fixings tightly secured Periodic Source Checks During cali
47. to be set for optimum performance with the Isotopes of interest Before determining HV s the Single Channel Analyser Thresholds must be reset to their default settings or erroneous results will be obtained see Thresholds page 5 28 Once this 1s done select the detector operating point using the HV scan procedure detailed in Selection of Detector Operating Parameters page 9 3 SAM12 User Manual 11 9 Maintenance and Trouble Shooting Replacement and Adjustment of Chrome 11 10 Lever Catch SAM12 User Manual Issue 1 0 Door Lubrication Periodically or as required lubricate the knuckles of the door hinge Any proprietary lubricant may be used e g WD40 PTFE petroleum distillates or light oils etc Door Catch and Lock Replacement and Adjustment Correct operation and adjustment of the door catch sensing and locking mechanisms is vital for trouble free operation Replacement Door Lever Catch set part 200895JF includes the Catch Plate and Strike Block The chrome Strike Block supplied in a new set should not be used it should be replaced with the original or replacement stainless steel Strike block to Drg B39278 1 To replace the Door Lever Catch undo M4 x 10mm long countersunk screws securing the outer door cover in 6 positions and remove cover 2 Open door and undo M5 x 35mm long countersunk screws securing lever catch to door bracket in 3 positions for version with 50mm lead and a cou
48. to make changes to this manual and to the equipment described herein without notice Considerable effort has been made to insure that this manual is free of inaccuracies and omissions However THERMO FISHER SCIENTIFIC makes no warranty of any kind including but not limited to any implied warranties of merchantability and fitness for a particular purpose with regard to this manual THERMO FISHER SCIENTIFIC assumes no responsibility for or liability for errors contained in this manual or for incidental special or consequential damages arising out of the furnishing of this manual or the use of this manual in operating the equipment or in connection with the performance of the equipment when so operated This SAM12 manual is a user guide and must be read in conjunction with the SAM12 Instruction Manual IMPORTANT NOTICE All units produced after the Ist January 1996 must by law conform to the rules and regulations governing Electro magnetic compatibility EMC In order to meet the requirements and CE mark the units described in this manual any maintenance carried out must ensure the correct re assembly of all parts especially the earth straps Furthermore particular attention should be made to the correct mounting of the mains filter iv SAM12 User Manual Thermo Fisher Scientific WARNING When monitoring articles operational procedures should contain warnings regarding inappropriate articles These items may include Articles
49. users 1s given the option of saving the data by pressing the Save Scan button This data along with its description can be retrieved via the Data tab see HV Scan Report page 5 36 Once the Save button has been pressed the display changes to show graphs of the scans There are two methods for determining the optimum operating voltage depending on whether the NBR and CCM features will be used or whether the voltages will be set the classic way by reviewing the Figure of Merit at each voltage setting The recommended method is that which allows the use of NBR and CCM which typically will also provide an operating voltage which satisfies the Figure of Merit criteria When the graphs are displayed select the NBR option and then press the respective graph for a detector which will expand it to fill the screen The optimum operating voltage is that which has a T1 T2 ratio of between 30 and 35 In order to find this press the Table button and the data will be displayed From the table identify the operating voltage that has the correct T1 T2 If you have to interpolate between two voltages assume a linear change Enter this value into the HV Setting box and then press the Back button The value below the graph will now have a Gold background to it This background colour highlights that the value has been changed but not yet saved When all operating voltages have been set press the Apply Se
50. 0 Adjustment of PSU 11 4 Administrator Mode 5 1 ALARM Result 5 56 Alarms 5 12 5 57 Alpha numerical Functions 5 2 Archives 5 40 Attenuation 5 28 B Background Change during Measurement 5 54 Background Summary Report 5 33 Battery 5 14 Battery Charger 5 19 Bete 6 3 Boum 6 3 Button Types 5 3 C Cact 6 3 Cal Check 5 19 Calibration History Report 5 35 Calibration Procedure 10 1 Calibration Selection 5 24 Calibration Source Activity 9 4 CCM Menu 5 30 CCM Setup 5 30 C ais 6 4 C ettect 6 4 Changes to the Normal Background Monitoring 5 49 CLEAR Result 5 55 Commence Monitoring 5 53 Critical Error 5 62 D Data Menu 5 31 Index A Data Retention 5 42 Date Functions 5 2 Description 2 1 Detector Bar 5 15 Determining the operating voltage for mid high energy nuclides 9 5 Diagnostics 5 31 DL 6 5 Door Operations 5 51 Doors 5 13 E E 6 4 Efficiencies 5 19 Establishing a new Background 5 48 Events Report 5 36 Exiting the Administration Mode 5 6 F F 6 4 Figure of Merit FOM method 9 5 File Location Functions 5 2 G Gaining Access to the Administration Mode 5 3 H Hv Power 5 28 HV Scan 5 25 HV Scan Report 5 36 Information 5 16 5 30 Instrument Configuration Report 5 38 Instrument Contaminated 5 61 Interfaces 5 43 Introduction 1 3 SAM12 User Manual Index M SAM12 User Manual MAct 6 5 Maintenance and Trouble Shooting 11 1 Measureme
51. 15 Operating Instructions 5 16 Diagnostics Menu Detector Bar Information SAM12 User Manual Issue 1 0 Select Diagnostics Detectors Bar i CE CECI to view the Detectors information gems Tap Brom LF igh Tei Pas Ms g Average Over samples 3 The Detectors are updated every measurement cycle Note that the Background Count rate is averaged and updated over the cycle time selected in the Average Over field Select Diagnostics Information to view the current Measurement Information Detection Limi 312 epa Maabunemant Porod BEC a Backgcund Rala fim cpa Hel Effects Alarm Rata i50 ll cpa E k Description of options MDA default unit Note that this is a view only field The Minimum Detectable Activity MDA is a value derived by the SAMI2 and is the smallest activity that can be statistically accurately detected with the current settings and background The MDA is calculated using the probability of detection probability of false alarm monitoring time and the average background etc Dashes are shown if this value is not available Detection Limit cps Note that this is a view only field This is the MDA expressed in counts per second Measurement Period Note that this is a view only field s This 1s the length of time for the sample calculated from the current alarm conditions and background measurement Background Rate Note that this is a view only field
52. 50020005 3 2 DIG UE S acoso iei ei ECOL RUE EL E 2090 CORRA RE E3902 LEER EDI VUELO OU OU LR CE UURR FEXLE ECT DUET RR UELLE E EIL LAT R EDD 3 3 Four OF Six Detectors cinnin raoe Gicept ambe dior est kodksddch NEE 3 3 Detector HN SCHNE EE m TOO 3 3 bcr Vy OW ec ne 3 3 RC GINO M 3 4 DESAY Me O 3 4 52 EEA 3 4 Bins A 3 4 Chremes TBI sets E IDEEN MIU IN UE 3 4 hrnilurmEbneiaLime e 3 4 Network ommunicati lis c 22c222550225022002222252022222222322225522209220082008 508 2 08 50800205 00500905008 0000550805005 3 5 didum 3 5 guliroeee 3 5 Power PRCT ORIG INS o eeepc eivesu eive d err Ds Io eresivt Lee cvr IN PUO VUE TUNI Dass NEU VIPENEESM A UM 3 5 Bary Da EUD e 3 5 BEAD i o E E E E Em 3 5 Overall Dimensions 5568A 5689A uo cccccsssssssseseeeccecccceeceeeeeeeasaaaenesseeeeeeeeeeeeeeeeqaas 3 5 Dimensions of Measuring Volume ccccccceeesessessseseeeseseeeesesseeeeeseeeeeeeeeseseeeseseseegaas 3 6 Weight with 1 25 mm of lead shielding 4 d
53. 5568A The Main Frame type 5568A is manufactured from a sturdy fabricated steel construction Mounted on top of the main frame is the Electronics Chassis containing the Controller Board Battery and Battery Controller Board two or three HV and Amplifier Boards a single Coincidence detector card user interface connections user control keyswitch and LCD display with touch screen The inside of the frame is clad on all sides including the doors with either 25mm 1 or 50mm 2 of lead to minimise the effect of background radiation The scintillation detectors are mounted on the faces and doors of the cabinet A stainless steel liner fits inside the cabinet to form a sealed cubicle which covers and protects the detectors A further stainless steel liner covers the lead on the inside of the doors The outside of the cabinet is clad with stainless steel in fill panels The whole cabinet stands on two box sections mounted one on each side and running front to rear These box sections provide access for a Fork Lift truck scintillation Detector Type 5569A Each of the six detectors type 5569A is a large area plastic scintillator wrapped in foil and plastic mounted in an aluminium jacket A photomultiplier tube is embedded in the plastic Connection to the dynode chain assembly type 5462A mounted on the back of the tube 1s via a light tight gland A single coaxial cable provides high voltage for the tube and carries the signals to t
54. 9 keV SAM12LP 6C 1D 2L 1000 cps 13599 13 Plastic Liners 12 15 12 15 SAM12LA 6C 1D 2L 1000 cps 9 9 Aluminium Liners SAM12 User Manual 6 11 Centre Technical Description Physics Issue 1 0 T eoo A full Type Test Report is available from Thermo Fisher Scientific on request Typical Co detection Detection of 5 000 DPM 83 Bq Co performance Typical performance in 10 uR hr 0 1 uSv hr Background lt 1 False Alarm in 1000 Measurements all figures typical Measurement SAM11 Co Typical Monitoring Confidence Model Eff Background Time 6C 2L 61 350 cps 4 5s 0 99 2 40 6C 1L 61 550 cps 7 18 4C 1L 45 350 cps 8 5 6C 2L 61 350 cps 3 38 0 95 1 650 6C 1L 61 550 cps 5 28 4C 1L 45 350 cps 6 1s 6C 2L 61 350 cps 2 8s 7 0 90 1 30 6C IL 61 550 cps 4 4s 4C IL 45 350 cps 5 28 A full Type Test Report is available from Thermo Fisher Scientific on request Probability Sigma and Table 3 Probability Sigma and Sigma Probability 0 0 50 00 0 1 53 98 0 2 57 93 0 3 61 79 0 4 65 54 0 5 69 15 0 6 72 57 0 7 75 80 0 8 78 81 0 9 81 59 1 0 84 13 1 1 86 43 1 2 88 49 1 3 90 32 1 4 91 92 1 5 93 32 1 6 94 52 Le 95 54 6 12 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Sigma 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 2 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 0
55. Axis Front to Back SAM12A 6C 1D A PENA t 6 17 Figure 9 Variation along Central Axis Bottom to Top SAMI2A 6C 1D DN s 6 17 Figure 10 Variation along Central Axis Left to Right SAM12A 6C 1D A WEA EE AE N AT 6 18 Figure 11 Statistical Limits of Counter Reliability ssse 9 9 xiv SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Manual Revision History Manual Revision History Section s Revision Approval fee Bae ame E T d 1 0 14 09 07 C Hills All Draft release of M Draft SAMI2 User Pottinger Manual for review 1 0 21 09 07 C Hills All First release of C Ablett SAMI2 User Manual SAM12 User Manual XV Issue 1 0 Thermo Fisher Scientific Foreword Foreword Throughout this document the term HEALTH PHYSICIST HP is used extensively It refers to the Person Persons or Team responsible for setting up day to day running and maintenance of the SAMI2 This may be an Instrument Maintenance Engineer Radiation Safety Officer local Competent Person Departmental Manager or any other Responsible Person The HEALTH PHYSICIST is the highest level security role uniquely responsible for setting and maintaining all lower order passwords The HP would normally be responsible for installing and setting up the
56. Bsum N acc E T MON where Cpcc is the average count rate during the Residual Contamination Count period Nrcc is the RCC threshold variable see Params page 5 8 The default setting for Ngcc 1s 7 06 and should never be set to a less that the sum of the probabilities of detection and false alarm P F In the event of residual contamination being detected the SAM will enter an Out of Service state and monitoring will not be possible see Notes regarding Residual Contamination Check page 5 60 The doors will lock if the option is fitted Intervention by a password holder will be required to terminate the fault status see Instrument Contaminated page 5 61 The Calibration technique see Calibration Menu page 5 19 uses flash 10 second background and source counts to automatically calculate the count time for the user The Calibration Accuracy and the associated confidence level is set in Params 3 menu see Params 3 page 5 11 The count confidence level has a default setting of 30 99 7 which is a generally accepted Confidence level that produces acceptable count times Then Calibration Count Time where Nor 3 Count Confidence Level of 99 7 n Flash source background Count cps b Flash Background Count cps A Calibration Accuracy ratio e g 5 0 05 The calculated count time is rounded up to the nearest whole second and T is limited to 10 000 seconds Jab Note that when CCM
57. CAL Co 60 375 10 01 2007 03 23 4030 78 3 True CAL Co 60 374 10 01 2007 03 23 29 5 29 2 False CAL Co 60 373 10 01 2007 03 28 2 12 18 1 False CAL Co 60 372 10 01 2007 03 16 8 25 13 6 False CAL Co 60 371 09 01 2007 15 37 1820 13 1 True CAL Co 60 370 X 09 01 2007 15 36 1820 19 True CAL Co 60 Page 1 Of 1 Press on one of the ID records to display the Activity Results Detail for the selected Results ID Activity Results Detail Results ID 375 ccm Normal Alarm 60 8 15 697 True 0 2 04 GrossSum Normal Alarm 2640 921 906 True 395 51 GrossSum High Alarm 2640 1230 1210 True 395 61 Measurement Results Report This report lists the Background Variance Test Summary Results between the selected Start and End dates It is possible to limit the report by Start and End Dates Background Variance Test Summary Test ID Test Date Pass Lower Upper Cycles Cycle Description Fail Limit Limit Duratio n s 1 05 06 2007 Fail 0 67 1 5 10 100 12 02 59 Page 1 Of 1 Press on one of the ID records to display the Background Variance Test Results Detail for the selected Test ID Thermo Fisher Scientific SAM12 User Manual 5 39 Operating Instructions 5 40 Archives System Menu SAM12 User Manual Actions Issue 1 0 Background Variance Test Results Detail Results ID 1 Detector Pass VT Fail back Fail 0 5154 bottom Pass 1 421 front Fail 0 6321 left Fail 0 1692 right Pass 0 95719 top Fail 1 83 Select Data Archives to select an
58. MANUAL SAM12 SMALL ARTICLES MONITOR Thermo Fisher Scientific SAM12 21st September 2007 Thermo Fisher Scientific 2007 ALL RIGHTS RESERVED REPRODUCTION IN WHOLE OR IN PART OF ALL MATERIAL IN THIS PUBLICATION INCLUDING DRAWINGS AND DIAGRAMS IS FORBIDDEN THIS INSTRUCTION MANUAL IS CONFIDENTIAL TO THERMO FISHER SCIENTIFIC AND IS SUPPLIED FOR USE ONLY IN CONNECTION WITH THE OPERATION AND OR MAINTENANCE OF THE EQUIPMENT TO WHICH IT RELATES AS SUPPLIED BY THERMO FISHER SCIENTIFIC THE CONTENTS MUST NOT BE USED FOR OTHER PURPOSES NOR DISCLOSED TO ANY THIRD PARTY WITHOUT THE PRIOR WRITTEN CONSENT OF THERMO FISHER SCIENTIFIC Thermo Fisher Scientific Bath Road Beenham Reading Berkshire RG7 5PR England Tel 0118 971 2121 Fax 0118 971 2835 This manual was produced using ComponentOne Doc To Help NOTICE SAM12 NUISANCE ALARMS WHEN MONITORING EQUIPMENT It may be found that alarms occur when monitoring equipment containing batteries This is due to the presence of naturally occurring radioactive materials in some batteries probably Thorium To avoid operational difficulties it is therefore recommended that batteries be removed prior to monitoring This is not a problem with all batteries but at this stage it is not possible to identify those which will never exhibit this problem Thermo Fisher Scientific SAM12 User Manual iii WARRANTY AND LIABILITY THERMO FISHER SCIENTIFIC reserves the right
59. Mode Select User ThermoFisher con To select a different user to the one displayed press the User field of the touchscreen Select Health Physicist Technician or ThermoFisher using the Up Down arrow and select OK See Foreword page 1 for more information regarding the roles SAM12 User Manual 5 3 Operating Instructions 5 4 Moving through the Menus SAM12 User Manual Issue 1 0 Health Physicist In the Entering Admin Mode window select OK for the ENTER PASSWORD window see below and the Alpha numeric keyboard to be displayed ENTER PASSWORD Select User Technician t S Password Enter the password using the keyboard and select OK to enter the Administration Mode note that the Diagnostics Detector Bar window is initially displayed The various options available in the Administration Mode are displayed in Menu Roles page 5 5 Entering an invalid password will display the following message Invalid Password E Press OK to re display the Enter Admin Mode screen Default Units Bq Language English United Kingdom l Quick Scan l CCM Enabled T NBR Enabled Hint HVs must be set for NBR T Auto Recount Set Up Diagnostics Calibration l Manual Recount Data I Residual Contamination Check after Alarm System l Residual Contamination Check before Background Check l Show Uncertainty Value On Result Show Activity Value Never OnAlarm
60. ON Lock doors for Tick this box if the door s are to be locked while a Residual Residual Contamination check takes place see Contamination check Notes regarding Residual Contamination Check page 5 60 Default OFF Lock Front Door on If the SAM12 alarms during a measurement select Alarm one of the following options for whether the front door locks Never High 1 e locks on High alarms only All Alarms 1 e locks on all alarms Default Never Notes regarding Two Door The two door SAM 12 is intended for barrier applications and SAM12 has optional door interlocking to ensure clearance integrity It operates in the same way as the single door version except when a CLEAR result is obtained the articles may be removed from the Back clean door as well as the Front dirty door Battery Select Set Up Battery to 8 2mm ooo CZ configure the Battery Charger Dchnange Times Si Sci Max Charge Curent 148 A Min Discharge Vetage mE w Note that this section 1s set by at production and should only be changed in consultation with Thermo Fisher Scientific Description of options Discharge Timeout This 1s the amount of time after the battery Secs discharges to the minimum discharge voltage before the charger turns off the output power If the charger is already running on battery power the value of the timeout will not e changed The timer can only be stopped if the mains power is returned Max Char
61. OR SCINTILLATION DETECTOR DC DC CONVERTER BOARD LOUDSPEAKER DOOR SWITCH PWR MODULE AC DC 12 1 LCD BACKLIGHT INVERTER IC MEM SDRAM 256MB TOUCH SCREEN CONTROLLER TOUCH SCREEN KEYSWITCH START SWITCH Issue 1 0 5670A 702695PE 5671A 5672A 5660A 5659B FHT681 42543 0223 FHT681 42543 0224 5569A TYPE 5390B 5675A B91603 A 406859KG 702473KJ 702548ND 702549ND 702627PD 702632ND 702633ND 702663KG 701829KG Thermo Fisher Scientific Issue 1 0 SAM 12 only SAM 12 only SAM 12 only SAM 12 only LAM 12 only Thermo Fisher Scientific Drawings List by Assembly SAMI2 FAMILY TREE DYNODE CHAIN General ASSy 42543 0223 HV amp AMPLIFIER BOARD General Assy 42543 0224 CCM BOARD General Assy 5659B TEMPERATURE SENSOR BRD General Assy 5660A BATTERY CONTROLLER BRD General Assy 5670A ETX CONTROLLER BOARD General Assy 5671A DUAL CHANNEL R2422 BOARD General Assy 5672A 5 WAY LED CLUSTER General Assy 5675A DC DC CONVERTER BOARD General Assy SAM12 OUTLINE DRAWING 1 DOOR SAM12 OUTLINE DRAWING 2 DOOR SAM12 INTERCONNECTION DIAGRAM LAM12 Outline View Spares List C92049 A3 54040 42543 0223 42543 0224 C91794 A C91799 A E91885 A C91929 A D91956 A C91965 A TBA TBA E92033 E91453 SAM12 User Manual 12 3 Spares List SAM 12 only SAM 12 only SAM 12 only SAM 12 only LAM 12 only 12 4 SAM12 User Manual Issue 1 0 Draw
62. OnAll Apply Cancel Settings Changes SAM12 y Setting of operating modes To move through the menus select the Main menu option on the left hand side of the window to display the sub menus Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Menu Roles Operating Instructions available Then select the sub option from the top Note that a full list of menu and sub menu options is displayed in Menu Roles below The following options are available depending on the role selected i See G Page I Technician 2 2 2 Thermo Fisher Physicist Set Up Options ss v mum eu mas aa Timed Counts 5 17 Calibration Diagnostics NE Selection I C C Diagnostics SAM12 User Manual c 1 5 Operating Instructions Issue 1 0 See Page Technician ee Um 7 NU CON NN CN mene isa T Exiting the Administration To exit Administration mode press on SAM12 in the bottom Mode left hand corner of the touchscreen Login to the Administration mode see Gaining Access to the Administration Mode page 5 3 Select the System main menu option and then the Actions sub menu option Select the Exit Application button A warning message 1s displayed asking for confirmation This action will close the application Are you sure you want to do this Select OK to exit and Cancel to abandon the exit process For fu
63. SAMI2 calibrating for user defined nuclides programming operating parameters and verifying correct operation of the instrument The term TECHNICIAN is used to refer to the personnel who normally repair and maintain the instrument in working condition IMP personnel are designated to this role Personnel who are general users of the system and normally carry out routine diagnostic and test functions are allocated to the eTHERMOFISHER role The term USER refers to anybody associated with or operating the instrument in any way For more information on which menu options are available see Menu Roles page 5 5 SAM12 User Manual i Issue 1 0 Chapter 1 Thermo Fisher Scientific Introduction Introduction Small Articles Monitor The Small Articles Monitors type SAMI2 is designed for monitoring gamma contamination of various items including tools clothing and personal effects and may also be used for waste Door switches and a start button are used in conjunction with a back lit touch screen LCD large area coloured lamps and distinctive audible tones to make controlled monitoring fast and simple The outward appearance is similar to that of a safe with a user control and display panel mounted above the hinged door s The electronics is housed in a compartment on top of the instrument for easy maintenance One or two inch 25mm or 50mm thick lead shielding screens the detectors and internal measurement volume
64. TICLES message 1s displayed and the SAMI2 reverts to Background mode Ready OPEN DOOR TO MONITOR ARTICLES However if residual contamination is detected or the count rate from any detector exceeds 95 of the Amplifier dead time then an Instrument Contaminated state exists The INSTRUMENT CONTAMINATED DO NOT USE message is displayed see Instrument Contaminated page 5 61 for more information Note that if the Door Locked options are ticked the door s are locked while the Instrument 1s Contaminated INSTRUMENT CONTAMINATED DO NOT USE See Doors page 5 13 for more information regarding Lock Front Door on Alarm Thermo Fisher Scientific Issue 1 0 Instrument Contaminated Remove Articles Thermo Fisher Scientific Operating Instructions If a door is opened during the Residual Contamination Check the ILLEGAL DOOR SEQUENCE Please close both doors message is displayed ILLEGAL DOOR SEQUENCE Please close both doors Once closed the Residual Contamination Count recommences If the Instrument is contaminated it is not possible to open the doors Intervention by an Administrator is necessary to clear the contamination ILLEGAL DOOR SEQUENCE Please close both doors See Actions page 5 40 for more information regarding clearing Qut Of Sense the Contamination iz if Thermo Once the contamination has been cleared and User Mode 1s re instate
65. Test Parameters window i 124030 mpm Vault Select Diagnostics Vault to test the Door and Locks C EE un Ec acm E Raccunt Count Alem Out of Service Open Locked Count Alarm Outof Sorica a Thermo Note that in a one door SAM12 the Rear Door option is not displayed To test the Door Status and Start Button the display will indicate the door Status and Start Button as follows e Front Door Open Closed and Locked Unlocked e Back Door Open Closed and Locked Unlocked e Start Button Pressed Not Pressed To test the Front and Rear Lamps press the lamp icon which will light up and the speaker will beep 9 8 Clear Recount Count Alarm Out of Service Front Lamps 5 18 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions Rear Lamps Open Locked Count Alarm Out of Service Battery Charger Select Diagnostics Battery ove ro n ad Charger to view the current Status aeg S RENE EE Cumes 35 A Curent B A of the battery charger Buna Mara On Stat Charging Sut Eatery Foot B Ha Mains Power 1 Change Curent Limited fll Change inhibited 1 E When the mains power is ON the system charges the battery When no mains power is present the system operates from the battery Calibration Menu Efficiencies Select Calibration Efficiencies to i ico view the selected Detector ETA C EE HH Efficiencies Em eee aan Gross Sum Efficiency 5g BT Drini Use t
66. User Manual Issue 1 0 analyses and stores background counts for each detector AII counts are corrected to compensate for the dead time of the electronics In measurement mode background is automatically subtracted and the result clearly shown by audible and visual indicators Options include a Residual Contamination check which can be performed after an alarm if required and an Auto Recount can be performed 1f the initial measurement produced an alarm condition Two door variants can be programmed to lock after alarms if required The standard SAMI2 can have the following options in any combination 4 Or 6 Scintillation Counters C 1 or 2 Doors D l 25mm or 2 50mm Lead L The instrument build standard 1s therefore identified using the following nomenclature SAMI2A nC nD nL1 Ej An additional suffix of which signifies the user language may also be used e g E for English speaking or C for Chinese A Low energy version using a plastic liner is available for detection of low energy gamma emissions including those which accompany some primary alpha emitters Identified by the nomenclature SAMI2L nC nD nL See Specification page 3 1 for further information Note At the time of printing neither 1 inch nor low energy versions of the SAM12 are available Thermo Fisher Scientific Issue 1 0 Chapter 2 Thermo Fisher Scientific Description Description Main Frame Type
67. Xe oe d QUE sow ae Js m EY Rear Lamp Control Failure X Channel Failure X Channel Failure Node 0 Ww N The fault messages produced whilst in the application will typically result in the OUT of SERVICE and Critical Error messages being displayed Reference to OUT OF SERVICE page 5 62 may assist to clear this fault and allow continued operation An extreme failure may result in the Window s blue screen halting further activity This will require rebooting the Thermo Fisher Scientific Issue 1 0 Removal of the Top Cover Removal of the Electronics Chassis from the Main Thermo Fisher Scientific Frame Maintenance and Trouble Shooting software However continued occurrence of this fault would suggest a serious problem that needs reporting to Thermo Fisher Scientific s service department Servicing of the Electronics Chassis Type 5689A The Electronics Chassis contains the Power Supply module battery Charger PCB Controller board and four HV and Amplifier Pcb s Mounted on the front panel are the LCD Display and inverter loudspeaker keypad start button and indicator lamps NOTE AS A MATTER OF GENERAL ELECTRICAL SAFETY AND FOR CONTINUED EMC PERFORMANCE ANY EARTH TAGS WIRES CONNECTORS OR COVERS REMOVED FROM ANY PART OF THE SAMI2 IN THE COURSE OF SERVICING MUST BE REFITTED CARE SHOULD BE TAKEN AT ALL TIMES NOT TO SHORT THE BATTERY TERMINALS CAUTION SWITCH OFF
68. abandon the process Press the details button to reveal the detailed results Calibration Source 3000 Bq Source Co 60 If you are satisfied with the result press the Confirm button to display the Add Description Optional Add a description for this calibration and Press OK for the Calibration page Select OK to complete the process Note that the results are stored in the database and marked as ok canca PASS If you are NOT satisfied with the result press the Fail button The Calibration Source page is re displayed Note that the results are stored in the database and marked as FAIL Thermo Fisher Scientific SAM12 User Manual 5 23 Operating Instructions 5 24 Calibration Selection SAM12 User Manual Issue 1 0 To check the current UE mE FU Ear Calibration select a Calibration SENEC eM New Calibrated on 03 11 2006 Source and Calibration Accuracy Then press Cal Check button to display the Ready to Start window ls 1 Select or Create a Calibration Source Calibration Accuracy 100 w 2 Enter Accuracy 3 Press Calibrate to create a new calibration 4 Or Press Cal Check to verify agamst last calibration Cal Check Calibrate Remove All items from the Calibrabion Source 3000 Bq Source Co 60 SAMI2 and press the Start button Ready To Start Note that the Abort button can be Remove all items From the Vault and Press Start pressed at any time during t
69. abled select this option to not use the Secondary details see below Fallback select this option for the Secondary details to be used if the Primary connection fails Enabled select this option for the Secondary details to be used Secondary IP Address This is the IP address for connection to the interface Thermo Fisher Scientific SAM12 User Manual 5 43 Operating Instructions Issue 1 0 Secondary TCP Port This is the TCP Port for connection to the interface Serial Interface Mode Use the pre defined window to select a option from one of the following Disabled select this option to not use the Serial details see below Fallback select this option for the Serial details to be used if the Primary and or Secondary connections fails Enabled select this option for the Serial details to be used Serial COM Port This 1s the COM Port for connection to the interface Serial Baud Rate This 1s the Serial Baud Rate for connection to the interface Fallback Recovery This 1s the interval in seconds that the system Interval s checks whether the standard connection to the interface has been restored during fallback 5 44 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions User Mode The basic operation of the SAMI2 1s as follows Thermo Fisher Scientific Upon power up system diagnostics are run see Start Up Checks page 5 46 Upon successful system
70. acement of the Power Supply is the reverse of the removal procedure If the Power Supply is thought to be faulty it should be replaced with an identical unit See Recommended Spares List page 12 1 Replace the connections ensuring all the clamping screws are tight and all GROUND EARTH connections are made There is no PSU adjustment Thermo Fisher Scientific Issue 1 0 Battery Removal and Replacement Battery Controller Board Type 5660A Removal and Replacement Replacement of the Charger Thermo Fisher Scientific PCB Maintenance and Trouble Shooting CARE SHOULD BE TAKEN AT ALL TIMES NOT TO SHORT THE BATTERY TERMINALS The battery is a sealed lead acid jelly type construction and does not require regular maintenance If however it requires replacement proceed as follows Switch off the power switch off the SAMI2 and remove the top cover as described in Removal of the Top Cover page 11 3 Disconnect the thermistor assembly from the negative BLACK terminal marked first taking care not to short it to the terminal Disconnect the red wire from the positive RED terminal taking care not to short it to the terminal Remove the holding bracket by undoing the two mounting screws and then remove the battery Dispose of it safely as required The battery should be replaced only with one of a similar type or operation of the SAMI2 may be impaired When refitting the battery make sure the mounting bracket 1s b
71. alibration Accuracy 500 display the Ready to Start se Advice 1 Select or Create a Calibration Source window 2 Enter Accuracy 3 Press Calibrate to create a new calibration 4 Or Press Cal Check to verify against last calibration The Calibration Accuracy along with the background EIL ELS measurement determines the count time required when the SAMI2 is being calibrated Remove All items from the Calibration Source Co 80 Source Co 80 SAMI2 and press the Start button Ready To Start R Il items From the Vault Note that the Abort button can be n andPresEStQt s pressed at any time during the process to return to the previous window Stan Avon The SAMI2 does 2 one second Calibration Source 3000 Bq Source Co 80 background measurement which is used in conjunction with the Calibration Accuracy value when Measuring Background calculating the time required for the source count NENNEN n Abort Thermo Fisher Scientific SAM12 User Manual 5 21 Operating Instructions Issue 1 0 When the Background Calibration Source 3000 Bq Source Co 60 Measurement is complete place the source in the SAM 12 and Background Measurement Complete press Start Insert Source and Press Start Start Abort The SAM 12 performs a Flash Calibration Source 3000 Bq Source Co 60 Measurement to calculate the Calibration time Quick Check Note that the Calibration time is the sum of the Bac
72. anging power supply requiring a maximum input power of 65 VA DO NOT CONNECT THE MAINS SUPPLY ENSURE THE KEYSWITCH ON THE REAR PANEL IS SET TO THE OFF POSITION A standard IEC mains connector is fitted on the side panel specified to IEC 320 EN60320 Only mating connectors of the SAMI2 standard should be used The SAMI2 must be connected to a fused outlet capable of being isolated The isolation switch should be close to the monitor and within reach of the operator The IEC power cord must be connected to the electricity supply as follows Brown conductor to LIVE L or Red terminal Blue conductor to NEUTRAL N or Black terminal Green Y ellow to EARTH E or Green Yellow conductor GROUND terminal WARNING THIS EQUIPMENT MUST AT NO TIME BE OPERATED WITHOUT THE GREEN WIRE CONNECTED TO THE MAINS GROUND When all installation work has been carried out follow the setting up procedure described in Setting Up Procedure page 9 1 SAM12 User Manual 4 5 Unpacking and Installation 4 6 SAM12 User Manual Issue 1 0 Printer Installation Unpack the Printer 1f supplied and locate it as required in the vicinity of the SAMI2 Configure the printer as detailed in the manufacturers hand book ENSURE the printer is set to the relevant mains setting The printer should be used with the USB interface simply by connecting to the SAM with the USB cable supplied Notes on Orientation and Positioning The la
73. as each lamp is tested and a single chime ding dong upon satisfactory completion If no sound is heard proceed as follows 1 Enter a valid password and select System Setup and increase the volume as described in Setup page Error Bookmark not defined The speaker should produce a series of beeps which gradually get louder or quieter when the volume control is dragged 2 If no sound is heard check the speaker connection to the Controller board 3 Since the speaker is unlikely to have failed a fault on the Controller board 1s indicated and it should be replaced as described 1n Controller Board type 5670A Removal and Replacement page 11 6 Fails the LCD Display Test A power on self Test switches on the back light and produces series of Self Test Messages as each lamp 1s tested If the 11 16 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Display Backlight Failure Will Not Accept Valid Passwords LCD Keypad Inoperative or Not Aligned Thermo Fisher Scientific Maintenance and Trouble Shooting back light fails see Display Backlight Failure page 11 17 If the display fails to show any message or is totally blacked out proceed as follows 1 Check the multi cable connections from the display to PL6 amp PL7 on the Controller board 2 If check 1 above has not revealed the problem a fault in the LCD module or Controller board is indicated 3 Temporarily connect a spare LCD modu
74. ating Instructions e Cal Check Data Retention months e Event Log Data Retention months Interfaces Select System Interfaces to 2S configure an interface to another gemgs mwrns system C3 comes E oom qmm iendane Bid Note that the example given in this description is of a connection to a ViewPoint MultiServer Other interfaces are possible and the parameters described below may vary according to the interface selected Please contact Thermo Fisher Scientific regarding your specific interface requirements 151209 Mmm m select the Configure Interface cu button to view the parameters germ P Es nirumen ID Er CZ Fraport Interval ia Ermar mataza Enatia S Primary IP Addnas inn10081 EN Primary TCP Pert fia Secondary IP Addnas Roo300D1 amm Secondary TCP Fert Bos Description of options Enable Tick this option to enable the interface to work with the SAMI2 Instrument ID Enter the Instrument ID using the numerical field Report Interval s This is the interval in seconds that the system checks the connection to the interface Primary Interface Tick this option to use the Primary details to Enable connect to the interface see below Primary IP Address This 1s the IP address for connection to the interface Primary TCP Port This 1s the TCP Port for connection to the interface Secondary Interface Use the pre defined window to select a option from Mode one of the following Dis
75. ayed in the message bar at the bottom of the screen Out Of Service A Critical Error Has Occurred Please Use Alternative SAM To clear this error the state must E be cleared in the Administration Mode or will clear automatically when the Out of Service Recovery Interval is passed see Params 2 page 5 10 for more information See Actions page 5 40 for more information regarding clearing the Critical Error If High or Low Background occurs the Out of Service message is displayed Note that this Temporary Error message is recoverable The Out Of Service Temporary Error has Occurred if High Background conditions exist Out Of Service A Temporary Error Has Occurnnacd Please Use Alternative SAM Gut Of Service Out of Service High Background Conditions message 1s displayed when the background activity prevents discrimination of the alarm level with the required confidence in the Maximum Monitoring Time allowed see Params 2 page 5 10 Ifthe count rate from any detector exceeds 95 of the Thermo Fisher Scientific Issue 1 0 Operating Instructions Amplifier dead time a High Background fault condition will also be enforced Monitoring of articles cannot be performed unless one or more of the following occurs 1 The background activity drops sufficiently for the current alarm level to be detected or 2 The Health Physicist modifies one or more of the following param
76. bration after repairs or once a year the detection efficiency of the SAMI2 should be checked using a Calibration check as described in Cal Check page 5 19 To perform these checks small area sources of the nuclides that the SAM12 is required to detect should be used A stable background is essential for an accurate result The calibration check will be performed to an accuracy defined by Calibration Check Accuracy 96 see Params page 5 8 The overall Efficiency calibration factor should be within 10 of the existing programmed value Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Routine Checks Should the results be outside these limits the SAMI2 operational parameters require revision see Setting Up Procedure page 9 1 Calibration procedures are described in Calibration Procedure page 10 1 Carry out a regular source check after a 100 sec background update Regular Source checks Daily or weekly source checks are advisable using a Calibration check as described in Cal Check page 5 19 The check source is placed in the calibration position usually 3 inches from the bottom of the measuring volume The alarm response should be 2 out of 3 or greater than the probability of detection for a one alarm level source Cleaning Instructions WARNING Ensure the mains supply is isolated before cleaning The display can be wiped clean with a dry cloth Smudges may require the application o
77. changing measurement condition exists Values 0 1 to 7 sigma in 0 1 sigma steps Default 7 o This is the length of time used by SAMI2 to determine if a changing measurement condition exists Values 2 to 30s Default 3 s This 1s the statistical increase during a Residual Contamination Check compared to the background measurement Values 0 1 to 7 sigma in 0 1 sigma steps Default 7 o This 1s the required accuracy to which the calibration is carried out Use the pre defined window to select a default source Fora list of Sources see Cal Check page 5 19 Values from source database This is the number of days since that last calibration date before the unit needs to be calibrated again See Out of Calibration page 5 48 to view the SAM12 User Manual 5 9 Operating Instructions Issue 1 0 message displayed on the unit when out of date and Cal Check page 5 19 for information of the last Calibration Date Values 1 to 400 days 0 to disable Default 0 Max Clear Result This is the maximum length of time in seconds Display Time s that the Clear result 1s displayed before reverting to the Ready screen Values 0 to 500 s Default 300 s For further information regarding these options contact Thermo Fisher Scientific Params2 Select Set Up Params2 to ens 7 7 7 77 customise the second set of e temen Premi vee Operational Parameters Probabdity of Falsa Alarm FF a EDO Minimum Ma
78. ck is required before monitoring can resume Open the door to remove the article When the door 1s closed the Updating Background dice criar a window is displayed Changing Conditions See Notes regarding Changing Background page 5 51 for more information Remove Articles and Close Door Issue 1 0 Alarh Alarm Thermo Fisher Scientific Issue 1 0 Operating Instructions Monitoring Result An example of the result screen 1s displayed below Headline 1 Result of the Monitoring see 5 2 4 9 for A LA R M further information regarding messages Headline 2 Information regarding the result see 5 2 4 9 for further information regarding messages This article is contaminated Activity Result If enabled see 5 2 4 1 3900 Bq 79 3 Bq Uncertainty Value for further information If enabled see 5 2 4 1 for CCM Activity 3588 Bq further information User Instructions CCM Activity Eear NG PI II HP If the CCM alarm is triggered inf i ease ca ii ii te Bala see 5 2 7 for further information For more information regarding the options available to display results see Options page 5 6 for more information CLEAR Result Ifthe measured contamination is below the alarm level or when QuickScan indicates real clean the user is informed audibly and visually of the result with instructions to remove article The Clear message is displayed Theo Note that this message is
79. containing liquids Articles with significant shielding Articles containing large magnets Articles with known radioactive content Articles containing liquids may have different release criteria Articles of large weight or significant shielding may require different procedures requiring Health Physics intervention Articles with a magnetic pull of more than four pounds may influence the accuracy of the monitor In standard mode the monitor is unable to differentiate between pre existing activity and surface contamination of an article The NBR feature if used will partially mitigate for naturally occurring radioactive material The SAM12 weighs up to 1 5 tonnes Only suitable lifting equipment must be used to move the monitor using the facilities provided The monitor should only be installed and used on a suitably robust and stable base WARNING AGAINST IMPROPER USE The protection provided by this equipment may be impaired if used in a manner not specified by the manufacture The user must adhere to all the safety precautions noted overleaf and to individual warnings contained within this manual Thermo Fisher Scientific SAM12 User Manual V WARNING SYMBOLS The following is an explanation of the warning symbols seen on the SAM12 Please read this information before using and or maintaining this equipment As seen on the back of the 5689A Electronics Housing CAUTION Isolate the mains supply and wait one minute before removi
80. cribed in Preparation for Calibration page 10 2 Before calculating efficiency factors for new nuclides it would be advisable to verify those for Co and or Cs ensuring that the SAM s detectors are functioning correctly If low energy nuclides need to be monitored such as Co then it may be necessary to undertake an HV scan for that particular nuclide Follow the procedure described in Performing the HV Scan page 9 4 specifically for the Figure of Merit method see Figure of Merit FOM method page 9 5 in order to find the best operating voltage If NBR is required then the voltage must always be optimised using the method described in NBR method page 9 5 SAM12 User Manual 10 3 Calibration Procedure Calibration mixes If Background Values Vary 10 4 by More Than 30 If Nuclide Count Rate Outside Required Value SAM12 User Manual Issue 1 0 The SAMI2 will allow calibration streams to be set which will include a number nuclides and their associated percentage in the mix The SAMI2 will take account of the respective efficiency of the nuclide and the percentage to evaluate the overall efficiency of the SAMI2 to the mix Note that even when the SAM is calibrated to a single nuclide such as Cs this 1s still treated as a single nuclide stream Only those nuclides to which the SAM12 has been calibrated may be included in the mix Calibration Selection page 5 24 shows how to create the mix for a new
81. ctor does not exceed the following 10 cps uR h 15 cps uR h l inch 25 mm 1000 cps uSv h 1500 cps uSv h 6 cps uR h 10 cps uR h 2 inches 50 mm 600 cps uSv h 1000 cps uSv h 2 Each background count does not differ by more than 30 from the mean value of all detectors 3 Calculate the Mean Source Counts Sm for all detectors The value of the net source counts S for each detector does not differ by more than 15 from the mean value of S for all top bottom left and right detectors and by no more than 25 for front and rear detectors if fitted If any detector exceeds any of these limits alter the relevant HV by 10 V and check the FOM is not significantly different than the original A total adjustment of 75 V is permissible This is a rough guide and individual circumstances may demand wider variations If and when the background and source values are satisfactory calculate the detector efficiencies from the net source counts S and source activity at the chosen HV setting Calculate the overall system efficiency which should be within the range below Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Setting Up Procedure SAM12 Co 1 2 MeV Cs 662 keV No detectors Centre 40 16 58 28 The above table includes variations for 1 and 2 door versions and 1s independent of lead shielding 4 Individual detector efficiencies should be an Detector approximately equal prop
82. d after the Residual Contamination Check if the option 1s selected Enter a valid password in the normal way see Gaining Access to the Administration Mode page 5 3 and check the door unlocks For the two door SAMI2 with door locks opening one door will lock the other Alternatively the locks can be exercised individually see Vault page 5 18 for more information During calibration or more frequently 1f required check any mechanical structure on which the SAMI2 may be mounted Since the SAM12 with especially with 2 of lead shielding 1s very heavy any mounting arrangement should be inspected for signs of deterioration instability or any other factor which may affect safety of operation or maintenance If any such defect 1s suspected the SAM12 should be withdrawn from service and safely removed using a suitable forklift and the integral fork lifting facilities provided The mounting should be repaired and made safe before replacing the SAMI2 See Door Lubrication page 11 10 for details regarding lubrication of the knuckles of the door hinge Any other mechanical faults should if they occur become apparent during normal monitoring operation SAM12 User Manual 8 1 Routine Checks 8 2 Battery Charge state Display Checks EMC amp Safety Earthing SAM12 User Manual Checks Issue 1 0 Electrical Checks During calibration check the general condition of the battery To do this turn the SAMI2 key switch on
83. d the SAMI2 performs the System Self Testing see start Up Checks page 5 46 Two door SAM12 In a two door SAMI2 open the front door to remove a clean or dirty Article the READY DEPOSIT ARTICLE AND CLOSE DOOR message is displayed see Door Operations page 5 51 The SAMI2 1s now ready to monitor another article On a two door SAM12 if the Rear Door is opened to remove a clean article the REAR DOOR Gii IS OPEN Please Wait message BEN is displayed Closing the door displays the Ready message Please wail Ready Theat On a two door SAM12 if the Rear Door is opened to remove a dirty article the ILLEGAL DOOR SEQUENCE message is displayed Closing the door causes a Residual Contamination Check to be run ILLEGAL DOOR SEQUENCE Please close both doors See Notes regarding Illegal Door 4 Thermo Operations page 5 52 SAM12 User Manual 5 61 Operating Instructions 5 62 Critical Error Temporary Error Notes regarding High Background SAM12 User Manual Issue 1 0 One door SAM12 In a one door SAM12 open the door to remove the Article the READY DEPOSIT ARTICLE AND CLOSE DOOR message 1s displayed see Door Operations page 5 51 The SAMI2 is now ready to monitor another article Out Of Service If an error occurs during the establishment of a new background the Out of Service message 1s displayed note that the reason for the error may be displ
84. d upon a number of user programmable variables as well as the Background Actual Monitoring Time seconds is the actual time for which Articles are monitored The calculated monitoring time Tcal 1s first rounded up to the nearest whole second It is then compared with the user programmed Minimum Monitoring Time Tmin and if Tcal lt Tmin then Tmon is forced to be Tmin otherwise Tmon Tcal If Tmon gt Tmax then a high background condition exists and normal monitoring is not possible see Calculation of the Monitoring Time Tcal page 6 6 Minimum Monitoring Time seconds is the Minimum Time for which articles are monitored regardless of the calculated Monitoring Time see explanations of Tcal and Tmon above The Minimum Monitoring Time is set from in Params 2 page 5 10 Maximum Monitoring Time seconds is the maximum time for which articles are monitored regardless of the calculated Monitoring Time see explanations of Tcal and Tmon above The Maximum Monitoring Time is set in Params 2 page 5 10 Contamination Alarm Level variable unit is the activity level at which the user requires the alarm to be triggered The alarm level is set in Alarms page 5 12 and the units e g dpm Bq nCi may be selected in Options page 5 6 SAM12 User Manual 6 3 Technical Description Physics 6 4 SAM12 User Manual Ceps Ceffect Issue 1 0 Contamination Alarm Count rate cps is the count rate at which the
85. e properly secured Reconnect the red wire to the RED terminal first ENSURE THAT ANY PROTECTIVE SAFETY BOOT IS REFITTED CORRECTLY OVER THE RED POSITIVE BATTERY TERMINAL Reconnect the thermistor card to the BLACK terminal last Failure to do this may impair charging control and may lead to premature battery failure The battery contains hazardous substances please take care to dispose of the old battery in accordance with your local regulations in Europe Directive 2006 66 EC Switch off the power and remove the top cover as described in Removal of the Top Cover page 11 3 The charger PCB 1s situated on the left hand side of the Electronics Chassis immediately over the power supply Before attempting to remove the 5660A Charger board ensure the mains supply 1s disconnected and the SAM is switched OFF Disconnect the Battery cable from the 5660A board at PL3 Disconnect the other cables remove the four screws and washers securing the PCB to its mounting spacers The PCB is now free to be removed from the Electronics chassis Replacement of the charger PCB is the reverse of the removal procedure PL3 last Should the Charger PCB be thought to be faulty it should be replaced with an identical unit See Recommended Spares List page 12 1 SAM12 User Manual 11 5 Maintenance and Trouble Shooting Replacement of the Controller 11 6 Controller Board type 5670A Removal and Replacement board FHT681 cards Rem
86. ealth Physicist and Thermo Fisher The lowest level 1s Technician and allows the user to view some parameters and undertake calibration checks The Health Physicist level gives access to all parameters that are used for calibration and setup of the instrument The top level Thermo Fisher 1s reserved for the expert user since it gives access to specialised calibrations settings that fundamentally affect the performance of the instrument and should only be set at the Thermo Fisher factory or by a Service SAM12 User Manual 9 1 Setting Up Procedure 9 2 Setting the Operational Parameters SAM12 User Manual Issue 1 0 engineer The menu options that are available to each user levels are summarised in Menu Roles page 5 5 Passwords page 5 42 shows how the user may change the password Both the Thermo Fisher and the Health Physicist passwords protect the security of the operational Parameters and hence the integrity of the measurement Therefore these passwords should remain confidential their use restricted and above all should not be readily obvious to potential hackers Each user level should have a unique password and under no circumstances should all three levels be assigned the same password 2 Door Locking Configuration For 2 door SAMs it is essential that the door locking options are correctly configured before monitoring operation 1s allowed Doors page 5 13 describes the method for setting the doors correct
87. eason follow the procedure described in HV Scan page 5 25 The SAMI2 will be delivered calibrated to both Cs and Co However if the user wishes to undertake a calibration check or to recalibrate follow the procedure described in Cal Check page 5 19 Whenever the operating voltage on a detector 1s changed the instrument must be recalibrated The details of the current and previous calibrations are stored to a backup compact flash These backups take place automatically after every calibration and when requested by the User It is recommended that the backup is undertaken after every voltage scan and calibration This backup may be retrieved if for any reason the hard drive on the instrument needs replacement Selection of Detector Operating Parameters The following sections assume that the instrument is set to the factory defaults The Test and Performance Certificate supplied with each instrument lists the recommended High Voltage settings for each detector for the optimum detection HV Scan page 5 25 describes the setting of the detector HVs If however it 1s required to ascertain the optimum operating voltages by measurement e g due to new detectors the procedure described in Derivation of the Optimum Operating Voltage page 9 4 should be followed Calibration for other nuclides and nuclide mixes 1s described in Calibration Procedure page 10 1 SAM12 User Manual 9 3 Setting Up Procedure Derivation of the Op
88. edten a 11 11 By arr i oro DID c cct 11 12 Normal Start up Boot up Operation ccccccccccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeees 11 12 Unit dead will not boot up amp charging LED is OFF ccccccccccccceeeeeeeeeeeeeeeeees 11 13 Unit dead will not boot up amp charging LED is ON ccccccccccceceeeeeeeeeeeeeeeeeeeeees 11 13 Starts up but Display is Blank amp Fails Self Tests no chimes sssse 11 14 Will not run amp displays Out Of Service Low Background Counts 11 14 Will Not Run amp Displays Out Of Service High Background Conditions 11 15 Panis bamp or LAR DT Cs is ote tdeo a uo dide disp sbeteh 11 16 Pas Loudspedker TeSt a6 tsi eat ond Ge diese di ea nase sed De dese Paci ias e ES 11 16 baisse ECDDISplay DOSE eee ioo itt n HIST Ub Gd ted Gnd cud Gedani 11 16 Display Backlisht Failure as eoo FE bet ma ee eee ots lta Cr sus Ms SE 11 17 Will Not Accept Valid Passwords 00ccsseessesssssssssssessessessssssseseeseseeseneeseeeggas 11 17 LCD Keypad Inoperative or Not Aligned eesssseseessseeeeeeeeeeeeeeee enn 11 17 Will not Enter Background Mode esses 11 18 Locked Backeround Mode bo itii das tu dotalibus ea eden ere 11 18 Locked in Measurement MOGQOG 1t eats ated usu dM EU 11 19 USB Output Data 15 CORTUDIeQ iode eti dota ledp edu es
89. ee eeu e eee e o roro reet eere eee eoe nene eee hr ranae 7 3 THEO UC E o a ccs ciated accel a dts ta rate ad stra E E EOE E I N EE cibos butt 7 3 ISevsywite hope ratio editam dated a clad desde diosa cal cet als 7 4 FH 1681425430223 amp 42545 02234 esent e epe pande IeS SERERE ERXER TRE E UXEV EHE PERENTER EIS NV ks E NN e XU eEkvE HV T RUE 7 4 bcmatillation HVA mp Het soo orte i dh E ttedided di t Ot ies 7 4 HV es Amaplitict C Ote CHODS oodd iota E m deiade dis 7 5 Cornicidencexlele ctor 6a osito iliam blasts s Dn aetna ae eaten cult cae 7 5 Coincidence Detector conne CEIODIS ee oar obe eb o S it n aedi tse odis T EE 7 6 Mains Power Supply Module 2 2 20 2 6 500002002000 0 0057000 coitu oo oco c doc ec nao cde ceo o aee cna ce aote cda ce ceHucun 7 6 LCD Display and Controller I F amp Backlight Inverter Module 7 6 General Electromagnetic Compatibility EMD Considerations eee 7 7 Chapter 8 Routine CDecKS ui ias ERR RENS REERMRXEASKEKUNU NS KEUENRREASREEERKGANKE NE MRUASAE CUKNRUNE 8 1 Mechanical CHECKS iidiilieicdteeve i ces ted bekb a suede sed edo bet beeevi Doce eed bea Ee Ede s be uoa due ovd beca ade den 8 1 Door Eockins Mechanismen Bed otio moore n Rb eu ae HEN 8 1 SAMI Mio tii JATEABSCeles io iota eno E as Lr lampes dite a e inta etc id 8 1 Otter Mechanical C Bec Sastre tao a a 8 1 Electrical eiie 4 UR 8 2 Battery C arbe SAG oomen EDI
90. eld the following date selection window appears 4 December 2006 gt gt Mon Tue Wed Fi Sat Sun Thu 1 2 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 OK Cancel When touching the screen in a File Location field the following Drive selection window appears Thermo Fisher Scientific Issue 1 0 Button Types Gaining Access to the Administration Mode Thermo Fisher Scientific Operating Instructions NEED b The Button types are listed below Direction Arrows steps through the menu options Drop down lists allows you to select a pre defined option from the list E3 Apply Action button show the process taken when Changes selected Ii CCM Enabled Tick Boxes show independent options that you can choose to set or mark The choice can be toggled on and off by touching on the box One Door Radio Buttons show mutually exclusive options choosing one option automatically clears the others The black dot shows the selected option CCM Enabled Note that changes made to fields are highlighted until applied or cancelled I NBR Enabled Two Doors Administration mode is entered by pressing on SAM12 in the bottom left hand corner of the touchscreen when the SAM12 is in Background Checking mode The Entering Admin Mode window is displayed requesting to select a User Entering Admin
91. es but the result is ALARM or when ALARM QuickScan indicates real dirty Ui ab ahi alta the user 1s informed audibly and visually of the result Note that this message 1s user definable See Messages page 5 15 for more information For more information see Alarms page 5 12 Note that the Uncertainty Value and Activity results are displayed ALARM if enabled see Options page 5 igieimdipp 6 for more information QU eee Please call HP Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Recount Alarms Operating Instructions If the Manual Recount option is ticked pressing the START Recount button after a measurement but before the door is opened will initiate a recount The Recount xx Seconds Remaining message 1s displayed 6 Seconds Remaining See Options page 5 6 for more information regarding Manual Recount Note that QuickScan is disabled during a recount See Options page 5 6 for more information regarding QuickScan If the Auto Recount option is ticked see Options page 5 6 for more information a recount will automatically be performed before a result if the following is true High Level Alarm gt measurement gt Normal Alarm See Alarms page 5 12 for more information regarding Alarm settings Note that in the following section the Uncertainty Value or Activity Result are not displayed See Options page 5 6 for further information regardi
92. etectors and one door 3 6 Weight with 2 50 mm of lead shielding 6 detectors and two doors 3 6 IO iulgiii cieeee c 3 6 Temperature and Humidity mt 3 6 Magnete Shielding coss oer pot ndn San rs a E A E AEA EA E R 3 6 E ae ee A 3 7 Environmental restrictions esessseseseeeeeesseessssssssssrrrtrrrrrrrreresssssssssssrrerererresssssssssseererrrene 3 7 Thermo Fisher Scientific SAM12 User Manual ix Contents Chapter 4 Chapter 5 Chapter 6 Chapter 7 Issue 1 0 Unpacking and Installation seus 4 1 lBinpdpnDI D M M M 4 1 Mechanical Installations 566229206 56 00928500 Ubi LEAL ELSE INE Uva E6240 SEE PaE LU e te oor Tid eoe e edet Eo Dan eo ends 4 2 Positioning and Mounting the SAM 12 eeeeeeeeeessssesseeeeeee een ananas 4 2 Removine Door Iransit SUDDOELUS eor n Y IRR UR es eee A MARRE ERXSERRRRR ARAS rn a 4 3 Fitting the Door Handles errena ete n vo som Ru iere OR 4 4 IBI Ss cg MR s 4 4 Electrical InstallaliOln cie ioi Ooha es ea esen o Hn Cea Cea S ETE COP eise Co o aera Ease Nat 4 5 leis eril anon 4 5 Electrical TastalldblOti s sait wee iab tu HUE u a a Pete SUL ode OP Ea sU aL Ed 4 5 Printer Installaatio nn ep TU 4 6 No
93. eters e Increases the maximum monitoring time see Params 2 page 5 10 e Relaxes the Probability of Detection see Params 2 page 5 10 e Relaxes the Probability of False Alarm see Params 2 page 5 10 e Raises the Normal Alarm level see Alarms page 5 12 Minimum Detectable Activity MDA and High Background Criterion page 6 7 describes how the SAMI2 decides if a high background condition exists Notes regarding Low The Out Of Service nm Background Temporary Error has Occurred SESSEL MSS if Low Background conditions exist A Temporary Error Has Occurred Please Use Alternativa SAM Qut Qf Temis Out of Service Low Background Counts Top Detector message 1s displayed when the count rate in the gross counts window over the 10 second background check period on any single detector falls below the threshold It will remain in this state until the background count rate once again exceeds the threshold on all detectors Thermo Fisher Scientific SAM12 User Manual 5 63 Operating Instructions 5 64 SAM12 User Manual Issue 1 0 Battery Mains Supply Indicator On the main screen an icon is displayed on the bottom edge of the screen which indicates whether the SAM12 is running on battery or mains supply as follows I Indicates that the SAM 12 is running on battery See Battery Charger page 5 19 for more information regarding Battery Status including remaining battery life 3 IN T
94. f the Screen cleaner provided when the instrument was delivered The cubical should be cleaned using a mild detergent Make sure the equipment 1s completely dry before re connecting the supply SAM12 User Manual 8 3 Issue 1 0 Setting Up Procedure Chaptr9 Setting Up Procedure General Initialisation Setting Passwords Thermo Fisher Scientific Initial Setting Up for Use After the initial installation and before switching on the SAM read Operating Instructions page 5 1 Ensure the door s are properly closed Connect the mains lead to the SAMI2 and turn the keyswitch clockwise until the unit switches on a click is heard after about 1 2 seconds and then release it see Keyswitch operation page 7 4 The SAMI2 will power up and load up the Windows XP operating system followed by the SAM12 application During this time the Thermo Scientific banner will be displayed see below SCIENTIFIC Once the application has loaded the application will initialise see Start Up Checks page 5 46 The system will automatically pass into the User Mode In this mode the user will not have access to any operational parameters In order to set up the instrument the user requires a security dongle which should be placed in the USB port of the SAM12 When this dongle is in place the touch screen is activated and the user will have access to the Administrator Mode page 5 1 There are three user levels Technician H
95. fixing bolts are fitted and tightened e The HV amp Amplifier boards are covered with the protective lid e The detector cables are correctly terminated with their respective amplifiers e All earth Connections are securely fitted e The top cover is fitted and all fixings are tight These requirements are mandatory and necessary for continued EMC performance and user safety IMPORTANT BEFORE ANY WORK STARTS ENSURE THAT THE MAINS SUPPLY IS DISCONNECTED FROM THE SAMI2 AND THE SAMI2 IS POWERED OFF The mains power supply for the SAMI2 is mounted at the rear of the electronics chassis on the left hand side Having first disconnected the mains supply and removed the cover from the Electronics chassis as described in Removal of the Top Cover page 11 3 deflect the restraining plastic on the PSU to one side to release the module from the aluminium bracket supporting the 5660A Unplug PL4 from the 5660A and gently ease the PSU and cable from under the bracket Remove the two wires connected to the mains filter and disconnect the earth cable from the Central Earth Point Finally remove the wires from the PSU connecting with plug PLA The Power Supply module contains dangerous high switching voltages and 1s not user serviceable It should be returned to Thermo Fisher Scientific s service department for repair or replacement Ensure the correct type of replacement power supply is used See Recommended Spares List page 12 1 Repl
96. from background radiation Four or optionally six large area plastic scintillation detectors are situated on the top bottom left and right and optionally front and back sides of the sensitive volume Each detector has a separate independently adjustable High Voltage HV supply Five discriminators are available per detector This provides adjustable windows for measuring different energy levels A removable stainless steel liner forms the internal measurement volume A low density liner 1s used in the low energy version A Mains power supply charges a 12 volt sealed lead acid battery to power the instrument and provides at least eight hours operation in the event of mains failure User definable passwords protect all system parameters which are accessed through the touch screen keypad The instrument security 1s protected by the presence of a USB security dongle In addition to the dongles User definable passwords protect all system parameters which are accessed through the touch screen LCD Operational parameters are user programmable and stored on the instrument s hard drive In addition all operational parameters including calibration and HV Scan data are backed up on an internal compact flash disk The system performs self tests at power on and at regular intervals during background acquisition When not actively engaged in monitoring the system continuously acquires SAM12 User Manual 1 3 Introduction 14 SAM12
97. g 1697 LB s Packed 670 Kg 1477 LB s Nett Weight SAM12A 6C 2D 2L 1480 Kg 3263 LB s Packed 1380 Kg 3042 LB s Nett Weight Environmental Operational Temperature Range 0 C to 45 C 32 F to 113 F Storage Temperature Range 10 C to 50 C 14 F to 122 F Humidity Range up to 95 RH non condensing NOTE USE BELOW 0 C 32 F IS NOT RECOMMENDED THE LCD DISPLAY WILL BECOME SLUGGISH BELOW THIS TEMPERATURE DO NOT STORE ABOVE 60 C 122 F Internal fields from measured items Standard SAMI2 Internal magnetic shielding ensures A variants magnetic fields of up to 9000 A m measured on the surface of the liner will have an effect of less than 5 on the count rate of the adjacent detector Low energy Internal mu metal magnetic shielding 1s SAMI2 L not fitted in the Low energy variants to variants maximise the low energy gamma sensitivity Thus the magnetic immunity will be reduced For more information regarding SAM12 variants see Specification page 3 1 External fields all variants Large external magnetic fields may reduce the measured value Thermo Fisher Scientific Issue 1 0 Specification IP rating IP50 Environmental restrictions e Not for use in flammable or explosive atmospheres e For installation in drip free locations only e Do not expose to excessive dust pollution levels Thermo Fisher Scientific SAM12 User Manual 3 7 Issue 1 0 Unpacki
98. ge Current This is the maximum current allowed for charging 5 14 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions the battery The charge current is monitored constantly and the PSU output voltage is reduced if this current is exceeded Min Discharge This is the voltage at which the timer starts when Volume V the battery 1s being discharged Messages Itis possible to amend the Headline s and Instructions for the following messages e Normal Alarm e High Level Alarm e Clear e Co60 Alarm e High Co60 Alarm Select Set Up Messages to select ia CS a message to configure Message High CoS Alarm 4 Headline HIGH Cos ALARM ne Please Call HE inamucton Pisaro Cal HF i n T m l ape Canter eer Satins Changen Use the direction arrow to find a Message to configure Once selected the text can be updated by pressing on the Headline Headline 2 and Instruction fields To save the changes press Apply Changes To set the selected message back to its default setting press the Set Default button Available Messages Message Headlines and Instructions Normal Alarm ALARM This article is contaminated Please call HP High Level HIGH ALARM LEVEL Please call HP Alarm CLEAR Please remove article Co60 Alarm Co60 ALARM This article is contaminated High Co60 Alarm HIGH Co60 ALARM Please Call HP Thermo Fisher Scientific SAM12 User Manual 5
99. gh care must be taken to ensure that the units are consistent Calibration Validity The SAM is capable of undertaking a calibration validity check This check will evaluate the number of days between the last valid PASS calibration check If this number of days exceeds the maximum acceptable recalibration interval then the SAM will put itself Out of Service see Out of Service page 5 62 To define the period between calibrations checks set the Calibration Required Interval parameter in Params page 5 8 If the user Fails the calibration check then this 1s not treated as a calibration and 1s disregarded when assessing whether the SAM is within its recalibration interval Equipment Required 1 A small radioactive source of known nuclide and activity which is found within typical contamination to be monitored The SAM is designed to detect activities down to release levels as well as quantify significantly larger activities up to in excess of 130 uCi 5 MBq Thermo Fisher Scientific SAM12 User Manual 10 1 Calibration Procedure 10 2 SAM12 User Manual Issue 1 0 since the SAM has a very linear response to activity any source of activity between 100 nCi 3 7 kBq to 10 uCi 370 kBq range may be used When CCM is enabled the 60Co source used for calibration should have an activity in excess of 5 uCi 185 kBq in order to minimise the calibration time Long count times will be required for small sou
100. han the Maximum Monitoring Time see Description of Parameters Used in Calculations page 6 2 and Params 2 page 5 10 and a High Background Out of Use message will be displayed see Notes regarding High Background page 5 62 for more information Monitoring The SAMI2 is available with a one or two door option In a two door SAM12 there is a front door and rear door In a single door SAM12 only the front door is fitted See Doors page 5 13 for more information CAUTION CARE MUST BE TAKEN TO AVOID SWINGING THE DOORS WIDE OPEN WITHOUT SAM12 User Manual 5 51 Operating Instructions Notes regarding Illegal Door 5 52 Operations SAM12 User Manual Issue 1 0 RESTRAINT IT MAY BE DANGEROUS AND CAUSE DAMAGE TO THE SAMI2 CAUTION THE DOORS ARE VERY HEAVY AND MUST BE CLOSED WITH REASONABLE CARE FOR SAFETY REASONS AND TO AVOID UNIT DAMAGE see Door Operations page 5 51 for more information on manually setting up the doors With the instrument in the Ready state displaying READY READY DEPOSIT ARTICLE AND CLOSE DOOR the door can be opened to commence the monitoring of an article Note that Door Open is displayed in the Operational Mode display bar Note that when the door is opened the background monitoring is suspended DEPOSIT ARTICLE AND CLOSE DOOR Reedy Cleat Deposit the article to be monitored in the SAM12 and Ready close the door Note that Door Closed Waiting for Sta
101. he process to return to the previous window When the Start button is pressed the process is similar to that described above in To Check the SAM Calibration page 5 21 Description of Error messages Start Aban Error Message Resolution Unable to calculatea 1 There is no source available valid monitoring time 7 The source does not have enough activity 3 If a cobalt calibration has been activated and the source 1s not cobalt60 This is not the default This is a warning message only Calibration Source Select Calibration Calibration a ao Selection to view current EM cm Calibration and create new EM 70 rem e customised Calibration gu Ee Apes mem p Peerage so ace Delete V KH T aj Cie L f Ec Note that the Active Calibration with its Gross Sum Efficiency is displayed in the top box To change the Active Calibration use the direction arrows to select a Calibration Once selected press Make Active button The selected Calibration and its Gross Sum Efficiency will be displayed in the top box Thermo Fisher Scientific Issue 1 0 Operating Instructions To edit a Calibration Mix select a Calibration Press 1n the Calibration field to edit the Calibration name In the Calibration Mix section use the drop down list to change the Nuclide Press in the Percentage field to edit the percentage When complete press Apply Settings button to save or Cancel button to q
102. he 5660A constantly senses the charge discharge state of the battery and controls the charging voltage accordingly The charging voltage is temperature compensated by means of a thermistor located on the battery This helps to maximise the life time of the battery A momentary key switch located on the side panel allows power to be switched to the electronics provided the battery voltage is above a safe value 1 e not discharged even when mains power is absent The key switch needs to be held ON for at least two seconds before the ON state is engaged The 5660A continues to monitor the terminal voltage of the battery during battery operation but will signal a shut down 1f the battery discharges to a predetermined point beyond which it would suffer permanent damage and be difficult to recharge A miniature fuse protects against over current conditions The application software would normally regulate shut down In the event of the software losing control an emergency shut down is possible by holding the key switch ON for a minimum of 10 seconds nominal FHT681 Scintillation HV and Amplifier Type 42543 0223 The Scintillation HV and Amplifier Board type 42543 0223 is a dual channel high voltage generator scintillation amplifier pair The HV generators are sub assemblies type 42543 0202 which are controlled by DACs Digital to Analogue Converter on the main printed circuit board The HV has a range between 0 and 1400 Volts with
103. he HV and Amplifier PCB via an MHV connector Electronics Chassis Type 5689A The Electronics Chassis type 5689A comprising of a Base Plinth and Top cover is mounted on top of the Main Frame Once the Top Cover is removed four fixings allow the Base Plinth to be detached from the Main Frame to facilitate easy maintenance SAM12 User Manual 2 1 Description Issue 1 0 The Electronics Housing contains the Controller Board Battery Controller PCB two or three HV and Amplifier PCB s the mains power supply and the battery An aperture in the lead allows for cabling to the detectors and a cutaway section in the frame houses the door switch situated on the side of the Electronics Chassis 1s the Side Control panel This panel contains connections for the Mains input ON OFF key switch Network and four USB interfaces The Electronics Chassis supports a top mounted back lit LCD with touch screen an internal loud speaker status lamps on both front and rear panels and a large Start button on the front Controller Board Type 5670A 56714 The Controller Board type 5670A 1s motherboard to an ETX PM C 800mHz Processor The ETX assembly contains 256 megabytes of ram and the real time clock The motherboard interfaces directly to all other boards and external devices in the system via numerous connectors not all are being used e The application software is retrieved from a 30 gigabyte minimum hard disk drive cabled via PL5
104. he direction arrows to select mum T T a Calibration Once selected press the Details button to view the Gross Sum Efficiency for the selected Calibration The View Active Calibration button automatically displays the active Calibration Back Cal Check This option allows the user to edit existing Calibration sources and create new ones There are also functions available to allow the user to check or overwrite the current calibration factor Thermo Fisher Scientific SAM12 User Manual 5 19 Operating Instructions Issue 1 0 Select CalibrationCal Check to EXE Ee ce Sel Sd edit the Calibration setting lt pom _4 z against a selected source and to EE conduct a calibration check es lt EH Calirabon Accuracy f en Advice The Decay Corrected Activity 1s displayed on this screen por Create a Calbeamon Source n r Accurmc 4 Cakbrgha to chighe d napis ciibratian Press Cal Check to verily agains last calibrator Cal Check Casbeate lu La Rh V Note that the Calibrate button 1s not available to the Technician role Edit Source proparbes To edit Calibration Source properties use the direction Nuclide T E arrows to select a Calibration Source Name pomme Last Calibration Date 20 February 2007 Source Once selected press Edit Bax ig button to display the Edit Source properties window aay
105. he serial interface The HV sections are designed to provide independently adjustable polarising voltages for two scintillation detectors with working voltage ranges between 500V to 1400V Thermo Fisher Scientific Issue 1 0 HV amp Amplifier Connections Coincidence detector Thermo Fisher Scientific Technical Description Circuitry The setting of high voltages and thresholds is done via the serial interface The 17 3 and 4 counters for each channel form Cobalt coincidence pulses which are available on OUTI amp 2 connectors The card has six connectors The scintillation detectors are connected via MHV connectors on PMTI amp 2 Coincident outputs are on BNC connectors OUTI amp 2 X15 amp X16 These connectors provide power supplies to the board and RS485 terminations SIGNAL T Signal Ground a iy X 5V Used in conjunction with PCB 42543 0223 this assembly allows measuring the coincidence counting rate of up to 6 detectors The number of coincidences can be determined through setting the threshold no 1 SAM12 User Manual 7 5 Technical Description Circuitry 7 6 Coincidence Detector connections SAM12 User Manual Issue 1 0 The board has six connectors Coincident inputs are on BNC connectors IN 1 6 X15 amp X16 These connectors provide power supplies to the board and RS485 terminations X15 amp X16 SIGNAL Mains Power Supply Module The mai
106. hen the monitoring cycle will terminate with the appropriate clean or contaminated indication After a measurement resulting 1n an alarm an NBR check may be undertaken if enabled on the Options sub menu see Options page 5 6 For details of the NBR assessment please contact Thermo Fisher Scientific A specific assessment of Co contamination may be undertaken if enabled on the Options sub menu see Options page 5 6 Further an alarm may be triggered specifically for Co although in most situations this alarm is unlikely to trigger before the Normal alarm The method of assessment of background count rates and contamination level applies to the CCM channel in the same way as for the sum of all detectors gross sum channel described in this section However both the background count rate Bccmsum and the efficiency Eccw are considerably lower than for the gross sum channel For details of the CCM assessment please contact Thermo Fisher Scientific After a measurement resulting in an Alarm condition a Residual Contamination Count RCC may be taken if enabled on the Options sub menu see Options page 5 6 A count equal to the monitoring time Timon 1s enforced SAM12 User Manual 6 9 Technical Description Physics 6 10 Automatic Calculation of Calibration Monitoring SAM12 User Manual Time Issue 1 0 Residual Contamination is assumed to exist where the following formula 1s satisfied B Cree E
107. his icon indicates that the SAMI2 is running on 7 mains supply Switch Off Only an Administrator is able to exit the SAM12 application see Actions Thermo Fisher Scientific Issue 1 0 Chapter 6 Introduction Thermo Fisher Scientific Technical Description Physics Technical Description Physics Performance Characteristics The apparatus 1s designed to measure a wide variety of personal articles and equipment for contamination so that they may be removed safely from the active area or from the site Other potential uses include determining the gross contamination of waste materials to determine their suitability for public disposal or for further processing such as burial or incineration To achieve a good degree of measurement certainty a high uniformity of response throughout the sample is desirable This is achieved by surrounding the sample on all sides by large area detectors Since the main requirement is to quickly prove the absence of contamination rather than to identify which radio nuclides are present large area Scintillation detectors having high gamma sensitivity are the most robust low maintenance and cost effective solution The main problem with very large area gamma sensitive detectors 1s the high sensitivity to background radiation This effect is minimised by shielding the detectors on all six faces with 1 or 2 of lead Low energy variants are fitted with an additional 2 mm Copper shield to
108. ify the presence of Naturally Occurring Radioactive Material NORM using the Natural Background Reduction NBR and Co using Cobalt Coincidence Monitoring CCM Thus any article can be monitored accurately with known statistical certainty often in a few seconds The article could be placed randomly anywhere inside the measurement volume and not precisely in the geometric centre Additionally a point source may be positioned anywhere on or within the article itself Therefore the sensitivity at the extremities and uniformity of response throughout the measurement volume in all planes are of interest The detectors are large and arranged such that high sensitivity 1s maintained throughout the measurement volume almost perfect 4n coverage being attained by six detector variants see Figure 1 page 6 14 to Figure 10 page 6 18 A full type test report is available from Thermo Fisher Scientific on request Explanation of the Operational Calculations It is a requirement to measure contamination on personal articles as quickly and accurately as possible Optimum detection efficiencies are required with minimum statistical error in giving alarm indications Measurement of contamination 1s dependent on ambient background level Accuracy of measurement of both background and contamination 1s dependent on respective background and contamination monitoring times self absorption and also on chosen probability of false alarm and probabilitie
109. ings List Letter and Numerical Order 42543 0223 HV amp AMPLIFIER BOARD General Assy 42543 0224 CCM BOARD General Assy DYNODE CHAIN General Assy 5659B TEMPERATURE SENSOR BRD General Assy 5660A BATTERY CONTROLLER BRD General Assy 5671A DUAL CHANNEL R2422 BOARD General Assy 5675A DC DC CONVERTER BOARD General Assy SAMI2 FAMILY TREE 5672A 5 WAY LED CLUSTER General Assy 5670A ETX CONTROLLER BOARD General Assy SAMI2 INTERCONNECTION DIAGRAM SAMI2 OUTLINE DRAWING 1 DOOR SAMI2 OUTLINE DRAWING 2 DOOR LAMI2 Outline View Accessories List SECURITY DONGLE CCM OPTION PLINTH WASTE PHANTOM CHECK SOURCES SOURCE RODS 42543 0223 42543 0224 A3 54040 C91794 A C91799 A C91929 A C91965 A C92049 D91956 A E91885 A E92033 TBA TBA E91453 A92169 A details on request details on request details on request Thermo Fisher Scientific Issue 1 0 Glossary Ci Glossary pCi A Beff Bq Bsum C CAct CCM Ccps Ceffect Ci CPM D DL dpm E F FOM Health Physicist HP HV kBq LCD LED MAct mCi MDA NBR Thermo Fisher Scientific micro curie Attenuation Factor or amps Effective Background while Monitoring Becquerel Total Average Background Count Rate Counter s Contamination Alarm Level Cobalt Coincidence Monitoring Contamination Alarm Count rate Effective Alarm Count rate Curie Counts per minute Door s Detection limit Disi
110. inter if supplied 1s packed in a separate carton The printer printer cable and mains leads are packed inside the measurement cubicle Retain the packing for these items Remove the protective foam from the outer edge of the stainless steel liner and door plate It may be necessary to remove any traces of adhesive with a suitable solvent cleaner The SAMI2 should be left on the base pallet until it 1s at the installation site in order to reduce the risk of damage during transportation The wooden base is designed to allow easy fork lift access The floor of the installation site should be level even and suitably robust in order to support the weight of the SAM12 When at the installation site remove and retain the plinth mounting bolts and fixings Lift the SAM12 off its wooden base using the fork lifting channels provided CARE MUST BE TAKEN WHEN LIFTING THE SAMI2 WEIGHS 1 5 TONS Mechanical installation 1s described below Mechanical Installation WARNING DO NOT ATTEMPT TO OPEN DOORS UNTIL THE TRANSIT SUPPORTS HAVE BEEN REMOVED see Removing Door Transit Supports page 4 3 The SAMI2 is intended for indoor use only and should not be used where liquids can drip or be spilled onto the lid For best possible performance it is suggested that the SAMI2 be positioned in the lowest stable background surroundings High background fields will reduce sensitivity and fluctuating backgrounds may cause false alarms and operatio
111. is Database Maintenance available PLEASE WAIT If the System Self Testing passes the Self Checks pass message is displayed for a few seconds Self Checks Pass If the System Self Testing fails the Out of Service message is displayed Out Of Service A Critical Error Has Occurred See Critical Error page 5 62 See Maintenance and Trouble Please Use Alternative SAM Shooting page 11 1 for further information regarding the Self Test Failures messages If the door is opened during the start up process the ILLEGAL DOOR SEQUENCE message is displayed To continue with the process the door s must be shut ILLEGAL DOOR SEQUENCE Please close both doors See Doors page 5 13 for more information Qut Of Sanyo Thermo Fisher Scientific SAM12 User Manual 5 47 Operating Instructions 5 48 Out of Calibration Establishing a new Background SAM12 User Manual Issue 1 0 If the Calibration Required Interval option has been exceeded then the Out of Calibration message 1s displayed see Params 1 page 5 8 To check the Calibration of the unit 955 75s Atematve SAM see Cal Check page 5 19 Out Of Calibration Once the Self Checks have passed SAM 12 will to acquire a new background and the Updating Background message is displayed Updating Background 49 Seconds Remaining Please wait See Notes regarding Changing Background page 5 51 for more information
112. ities become increasingly subject to other parameters particularly background level The interrelationship will be discussed in the Calculation stages Efficiency Correction Factor is the system efficiency summed efficiency for all detectors to the nuclide Enuc or mixture of nuclides Emix being monitored E is given by the contamination count rate in a given time and divided by the activity E 1s determined by calibrating with a known radionuclide source as detailed in Calibration for Other Nuclides page 10 3 Thermo Fisher Scientific Issue 1 0 Technical Description Physics Attenuation Factor is an allowance for attenuation of a directional background field by articles being measured Values of A can be determined for each detector by following the test procedure in Attenuation page 5 28 UE Detection limit or Minimum Detectable Count Rate cps Minimum Detectable Activity variable unit is the minimum Activity the system can detect within the calculated monitoring time It is very dependent on the user programmed False Alarm rate and the prevailing background conditions and thus will continuously vary The current Minimum Detectable Activity MDA may be viewed in Information page 5 16 in the units specified 1n on the Options sub menu see Options page 5 6 The MDA calculation is detailed in Minimum Detectable Activity MDA and High Background Criterion page 6 7 MAct RAct Activity of Contamination
113. kground and ZZ SS Source measurements The minimum time is 20 seconds Avon When the Flash Measurements Calibration Source 3000 Bq Source Co 60 are complete and the Calibration time is displayed press the Start Flash Measurements Complete button Calibration will take OOh 14m 32s Start Abort The calculated count time Calibration Source 3000 Bq Source Co 60 decrements while the source is measured Measuring Source 00 13 47 Ee Abort Calibration Source 3000 Bg Source Co 60 When the Source Measurement has been completed remove the Source and press the Start button for the final background TOM S measurement and Press Start for final background measurement Source Measurement Complete Start Abart 5 22 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions The SAMI2 measures the RE source 3000 Bq Source Co 60 background and the calculated count time decrements Measuring Background 00 06 11 Abort If the calculated efficiency has an illegal value 1 e no net counts the efficiency will be set to zero If a result is calculated the new Celbraton Source coto Source Co e0 calibration data 1s displayed Results Note that during a Cal Check Gross Sum Efficiency only an OK button is displayed f which returns to the pi piat EE RUM Calibration Cal Check screen duum etails Fal Confirm Cancel Note that the Cancel button will
114. l 9 7 Setting Up Procedure 9 8 Setting the NBR parameters SAM12 User Manual Issue 1 0 variance of the counts recorded in each cycle divided by the mean count in all the cycles The upper and lower variance limits have defaults of 1 5 and 0 67 The default values are based on a recommended number of counting cycles of 25 and a cycle period of 25 s If the number of cycles or the counting period is increased above these values then the spread of values is lower and the limits may be reduced Refer to Figure 11 page 9 9 for typical limits The NBR feature is effectively a pair of filters which examine the ratio of pulse rates above different pulse height thresholds since the ratios from NORM and typical man made radiation are well known then a degree of compensation is possible when NORM is present See Params 3 page 5 11 to view the setting of the NBR parameters This should only be undertaken by an expert user and this menu is only available at the Thermo Fisher level see Menu Roles page 5 5 for more information These parameters may be fine tined based on the NORM present on the users site However it is recommended that the user receives specific training from Thermo Fisher Scientific since incorrect setting of these parameters may result in some samples being incorrectly identified as NORM Thermo Fisher Scientific Issue 1 0 Setting Up Procedure STATISTICAL LIMITS OF COUNTER RELIABILITY P represents
115. le to the Controller board PL6 amp PL7 the back light is required If the message becomes visible the fault 1s 1n the LCD display module This is not user serviceable and should be replaced with the back light as described in LCD Display Touch Screen Touch Controller amp Backlight Inverter Removal and Replacement page 11 8 If no message appears the fault is in the Controller board which should be replaced as described in Controller Board type 5670A Removal and Replacement page 11 6 A power on self Test switches on the back light and produces a series of Self Test Messages as each lamp 1s tested If the back light fails to light proceed as follows 1 Check the cabling from the back light inverter enclosure to PL7 on the Controller board 2 Check that 5 volts appears across the pins of PL7 when the back light should be on If 5 volts is apparent then a fault in the LCD or back light inverter is indicated These items are not user serviceable and should be replaced as described I LCD Display Touch Screen Touch Controller amp Backlight Inverter Removal and Replacement page 11 8 1s absent across the pins of PL7 a fault on the Controller board 1s indicated and it should be replaced as described in Controller Board type 5670A Removal and Replacement page 11 6 If the SAM12 starts and runs but will not accept a valid password a fault is indicated either in the LCD Touch pad or the Controller board Pr
116. libration is essential when the NBR facility is used the Co calibration is essential when CCM is required Notes Ensure that each source is at least 8 feet away from the SAM during the background measurement Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Calibration Procedure At the end of the calibration the user is prompted to PASS or FAIL the calibration If the result does not appear to be correct see below for reference values it may be appropriate to FAIL or Cancel the calibration SAM12A Co 1 2 MeV Cs 662 keV Ba 356 keV CCM No detectors rines Genre 3 aches Gente 5 inches Genre Cente 42 38 17 16 28 26 10 4 4C 40 44 36 40 16 20 15 19 26 31 24 28 57 153 24 23 38 36 1 1 6C 55 59 51 55 22 26 21 25 36 40 34 38 See Specification page 3 1 for more information regarding the various SAM 12 types NOTES If the efficiency is very different from the expected value and the background is stable perform an HV scan see Performing the HV Scan page 9 4 and repeat this procedure The Instrument Configuration Report See Reports page 5 31 will provide a hard copy of the set up and calibration results Calibration for Other Nuclides See HV Scan page 5 25 for more information Efficiency factors for other nuclides and mixtures of nuclides can be defined in a similar manner to that for Co des
117. ll be displayed on the message bar 1 Unable to set detector alarms Database Offline Unable to Configure Detector Subsystem Invalid Language Setting pt mou gu Default Calibration has no Alarms SAM12 User Manual 11 1 Maintenance and Trouble Shooting 11 2 Device Error Messages Operational Self Tests SAM12 User Manual Issue 1 0 Configured Error Failed to Retrieve Sound Data From Database No Default Calibration Selected X Channel Failure 10 X Channel Failure Accessing Node 0 ID 1 ie at 1m If one of these messages occurs a fault with a peripheral device is indicated Normal operation of the SAMI2 can be continued when action has been taken to rectify or circumvent the problem PRINTER NOT ACCEPTING DATA The printer refused to accept data for over ten seconds This may be due to the printer being disconnected off line or turned off Check the printer and the connection to the SAMI2 see Network Communications page 3 5 Whilst the SAMI2 is in Background Checking mode certain aspects of the instrument s operation are tested repeatedly Ifa fault 1s detected the SAMI2 will display the appropriate message as follows 1 Amplifier Failure Amplifier Counter Failure Amplifier Counter Overflow Amplifier HV Over Current Amplifier HV Over Voltage Amplifier HV Under Current Amplifier HV Under Voltage Amplifier Dead Time Saturation Amplifier EEPROM failure 10 Front Lamp Control Failure S
118. ly At this point it 15 strongly recommended that the following User Programmable Operational Parameters are checked and reset by the Health Physicist before allowing normal monitoring to proceed Low Background Alarm Gross changing background Detector changing background Changing Conditions Changing Conditions period Calibration Required Interval See Set Up Params 1 page 5 8 for more information See Set Up Params 2 page 5 10 for more information Set Up Alarms Calibration stream Normal Alarm See Set Up Alarms page 5 12 for more information Thermo Fisher Scientific Issue 1 0 Detector HV Selection Thermo Fisher Scientific Setting Up Procedure Resetting the above Parameters will guarantee the integrity of measurements It is also important to reset the time and data see CCM Setup page 5 30 since these are used when check the calibration due dates and also by the Data option A listing of all the parameters 1s available by selecting Instrument Configuration Report page 5 38 This report should be either printed or saved to USB memory stick when the instrument 1s first set up and when significant changes of configuration are undertaken The SAMI2 will be delivered optimised with a valid HV Scan and optimum operating voltages stored The exception being the upgrade kit where the SAM12 electronics needs to be matched to the existing detectors If the HV Scan needs to undertaken for any r
119. m being removed from the clean door Data entry and diagnostic functions are accessed through a touch screen but access 1s password protected Displays The integral back lit LCD display provided 1s used in conjunction with the touch screen for data entry and diagnostic functions As well as duplicating any front panel LED display the LCD can also provides comprehensive user friendly operational guidance measurement results and instrument fault messages Five bright rear optional front panel lamps show the instrument status at all times and give the user clear indication of the measurement result FRONT BACK 2 door only Green Ready Clear Ready Clear White Recount Recount Yellow Count Count Red Alarm Alarm Blue Out of Service Out of Service A pulsing white LED on the side panel indicating that the mains is on and charging the battery Audible Indications Chime Measurement with a CLEAR result Single Beep End of a parameter counting sequence Thermo Fisher Scientific Issue 1 0 Overall Dimensions 5568A 5689A Thermo Fisher Scientific Specification Periodic Beeps Operator sequence ERROR Door opened when Background required Door open too long Rapid Beeps Measurement exceeding ALARM ACTIVITY Siren Measurement exceeding HIGH LEVEL ALARM Warble Measurement Aborted The speaker volume is user adjustable under software control Network Communications An RJ45 co
120. m option is set to Never the door can be opened and the Articles removed see Remove Articles page 5 61 See Doors page 5 13 for more information regarding Lock Front Door on Alarm Residual Contamination Following an alarm if the Check Residual Contamination Check after Alarm option 1s ticked see Options page 5 6 the Ready Preparing for Contamination Check message is displayed After the contaminated article is e removed and the Door is closed Thermo the Residual Contamination Count is performed Remove Articles and Close Door See Notes regarding Residual Thermo Fisher Scientific SAM12 User Manual 5 59 Operating Instructions 5 60 Notes regarding Residual Contamination Check SAM12 User Manual Issue 1 0 Contamination Check page 5 60 for more information The Residual Contamination Check is run under the following circumstances Residual Contamination Count 4 SECONDS REMAINING Following any door violation If the Residual Contamination Check before Background Check option is set see Options page 5 6 If Residual Contamination Check after Alarm option is set see Options page 5 6 The Residual Contamination Check will verify that the current background count rate does not exceed the Background Count Rate before the alarm by a statistically significant amount If no contamination is found the amp Ready OPEN DOOR TO B MONITOR AR
121. mmed minimum and maximum monitoring times The actual monitoring time Ton used when monitoring is then set according to the following criteria JV m n Tea when Tea gt Jun diesen ES T dn when Teal lt Tmin If Teat gt Tmax then a high background condition exists and monitoring is not possible See Notes regarding High Background page 5 62 Minimum Detectable Once a mean background count rate has been calculated the Activity MDA and High SAM will be ready to monitor articles and the Minimum Background Criterion Detectable Count Rate also referred to as the detection limit DL 1s found by solving the following formula for DL DL Therefore Mac Zaa E B mon where Act is the activity unit m Detectable Activity and Detection Limit may be viewed on the Information sub menu see Information page 5 16 and will be displayed in the units selected in the Options PAGE see Options page 5 6 NOTE MDA may differ from the Alarm level because Tmon is rounded up Tmin may take effect Changing Conditions During the monitoring cycle the monitoring time is subdivided into timeslices Each sum of the count rates on all detectors in a slice is compared to the average count rate in the cycle up to that point Changing Conditions exist where the following formula is satisfied gt N V Cav where Cay 1s the rolling average count rate within the monitoring cycle up to the point of the check Cav
122. n Confidence 55 CcmCoincidencePeriod CCM Enabled CCM Fitted Gross Changing Background Sigma Detector Changing Background Sigma Measurement Changing Background Sigma Changing Conditions Check Period DefaultCalibrationSource Probability of False Alarm Probability of Detection Lock Font Door on High Alarm Lock Front Door on Normal Alarm Lock Doors For Measurements Lock Doors for Residual Contamination Check Front Door Lock Fitted Last HV Scan Used NBR Instrument Contaminated Language LockVaultOnAlarm LockVaultOnHighAlarm Low Background Alarm Enable Manual Recount Maximum Monitoring Time s Measurement Confidence Sigma Issue 1 0 This report lists the current Instrument Configuration settings 75 True True 4 2 24 1 3 False False True True True True False en GB False False 10 True 10 2 Thermo Fisher Scientific Issue 1 0 Operating Instructions This report lists the Activity Results between the selected Start and End dates It is possible to limit the report by Start and End Dates and by the last n results note enter 0 for unlimited results Measurement Results Report Activity Results Summary Measurement Date Activity Uncertainty Alarmed Calibration Bq Bq True 379 11 01 2007 14 15 3670 53 7 CAL Co 60 378 11 01 2007 14 14 3660 53 4 True CAL Co 60 377 11 01 2007 14 14 0 0977 21 5 False CAL Co 60 376 10 01 2007 03 23 1 24 215 False
123. n and function of all the major electronic assemblies which comprise the SAMI2 Description of all assemblies is restricted to general operation and specification since detailed circuit operation may be the subject of design confidentiality Controller Board Type 5670A The Controller Board Type 5670A is detailed in assembly drawing E91885 A This comprises all the interface buffers and connections necessary to communicate between all peripherals and the proprietary on board plug in ETX processor The ETX unit plugs into the motherboard using connectors SK2 SK5 SK9 and SK 12 The assembly has the following facilities used by the system 1 800Mhz Pentium M processor 2 256 megabytes of RAM 3 Dual RS232 Serial communication interface 4 Realtime clock 5 This 1s supported by an off board Lithium battery The RTC provides microprocessor access to year month day hour minute seconds It also provides several interrupt periods from one year down to 0 01 seconds 6 Quad USB hub Type 1 7 Single Ethernet interface 8 LCD and CRT drivers 9 DualIDE ports 10 ISA 8 bit I O expansion 11 Flash Card interface 12 Audio synthesizer SAM12 User Manual 7 1 Technical Description Circuitry PL30 Header for Non Volatile Memory CF PL5 44 pin Primary IDE port for 2 5 disks PL25 40 pin Primary IDE port for 3 5 disks PL4 40 pin Secondary IDE port for CD Roms IC9 Programmable I O Device IC6 and IC8 Buffer
124. nabled if CCM Enabled is ticked see Alarm default unit Options page 5 6 This is the detected activity at which SAM12 will indicate a CCM High Level Alarm The Enabled tickbox must be checked for this option to take effect Values 0 to 10 000 000 Any unit Default Must be input Doors Select Set Up Doors to select the Mmmm Number of Doors whether Locks ger Trete are fitted and their behaviour Locks Fitiad Front Door Lock Fired B Rear Doce Lock Fed Lack Bahaar 7 Lock Dont for Measurements Lock Deore fer endua Contaminaton Check Lock Front Door Ce Alarm Havar Ash Cancel Sands Changes Note that this section is set by at production and should only be changed in consultation with Thermo Fisher Scientific Description of options Number of Doors Use the Radio buttons to select either One Door or Two Doors Default Two Locks Fitted Front Door Tick this box if the Front Door has a lock fitted Also referred to as the Dirty door Default ON Rear Door Note that this option is only visible if Two Doors is selected in Number of Doors Tick this box if the Rear Door has a lock fitted Also referred to as the Clean door Thermo Fisher Scientific SAM12 User Manual 5 13 Operating Instructions Issue 1 0 Lock Behaviour Lock Doors for Tick this box if the door s are to be locked during a Measurements measurement If the measurement is Clear both doors are unlocked Default
125. nal delays during background update periods The SAMI2 has no specific ventilation requirements The SAMI2 should be placed on as flat a surface as possible as no means of levelling adjustment is provided on the cabinet Installation on a slope may affect operation of the door and make opening awkward Before finally positioning the SAMI2 it will be necessary to remove the four M10 transit bolts securing it to the wooden base leave the door transit supports in place until the SAM12 is physically installed Thermo Fisher Scientific Issue 1 0 Removing Door Transit Thermo Fisher Scientific Supports Unpacking and Installation Retain the four plinth bolts for future use Use a fork lift of suitable capacity to lift the SAMI2 off the wooden base and finally position it Ideally the SAMI2 should be mounted on a raised plinth base in order that the door and cubicle are at optimum operating height for users and the LCD display at the optimum viewing angle Any such plinth must be flat suitably robust mechanically sound stable and fixed to the floor The SAMI2 should be fixed to the plinth A SAMI2 mounting plinth is manufactured associated equipment order code AE0181B When using this plinth the SAMI2 should be secured to it using the four set of M10 fixing bolts previously removed from the wooden transit base The mounting plinth base should in turn be secured to the floor using the four 12mm diameter mounti
126. nclature used to identify the build standard is in terms of nC Nd amp nL The eight variants are e SAMI2A 4C ID IL e SAMI2A 4C ID 2L e SAMI2A 4C 2D IL e SAMI2A 4C 2D 2L e SAMI2A 6C ID IL e SAMI2A 6C ID 2L e SAMI2A 6C 2D IL e SAMI2A 6C 2D 2L A Low energy Plastic liner LP version is available for detecting low energy gammas including those which accompany some primary alpha emitters It 1s restricted to the variants giving maximum sensitivity and shielding with a choice of doors e SAMI2L 6C ID 2L and e SAMI2L 6C 2D 2L A further option 1s available depending on the character set required by the Windows XP operating system e E Western Europe North America e C Chinese An upgrade kit AE0208A is available to facilitate the detection of the radionuclide Co SAM12 User Manual 3 1 Specification 3 2 SAM12 User Manual Issue 1 0 Operational Parameters See Params 1 page 5 8 Params 2 page 5 10 and Params 3 page 5 11 for information regarding the settings and defaults for the Operational Parameters Software Options See Options page 5 6 for information regarding the settings and defaults for the Software Options Vault Options see Doors page 5 13 for information regarding the settings and defaults for the Vault and Door Options Default Messages See Messages page 5 15 for information regarding the settings and default
127. ng and Installation Chapter 4 Unpacking and Installation Unpacking After installation of 2 door SAM12 ensure both doors are closed before switch on WARNING DUE TO THE LEAD SHIELDING THE SAM12 WEIGHS 1 5 TONS A FORK LIFT TRUCK OF SUITABLE LIFTING CAPACITY MUST BE USED TO MOVE AND TRANSPORT THE SAM12 SAFELY USING THE INTEGRAL FORK LIFT CHANNELS WHEELS SKATES SKIDS OR SIMILAR DEVICES MUST NOT BE USED TO MOVE THE SAM12 PARTICULAR CARE SHOULD BE TAKEN ON GRADIENTS ENSURE THE INSTALLATION SITE IS SUITABLY ROBUST DO NOT ATTEMPT TO OPEN DOORS UNTIL THE TRANSIT SUPPORTS HAVE BEEN REMOVED see Removing Door Transit Supports page 4 3 The SAM12 case should contain the following Small Articles Monitor SAM12 1 or 2 Door Handles Combined Operational and Maintenance Manual Pack containing ON OFF keys Dongle and Screen Cleaner Calibration Certificate SAM12 Mains power cord EC countries only Printer with printer cable Optional Printer Tractor Feed Plastic locating tray Mounting plinth AE0181B Optional To unpack the SAM12 Remove the top and side packing panels and peel off the polythene wrapping Thermo Fisher Scientific SAM12 User Manual 4 1 Unpacking and Installation Positioning and Mounting 4 2 the SAM12 SAM12 User Manual Issue 1 0 The door handle s manual Calibration certificate Keys Dongle and Mains power cord are packed inside the measurement cubicle The Pr
128. ng holes with suitable fixings Plinth details are shown on drawing B91208 Once the SAMI2 is correctly positioned install the optional plastic location tray within the measurement cubicle Only remove the door transit supports when the SAMI2 is physically installed to avoid fork lift shock damage The SAMI2 is shipped with a Transit Support located on the underside of each door The Transit Supports are bolted through the main frame and door frame to support the door and protect the hinges and latching locking mechanism from physical damage due to rough transit handling Do not attempt to open the door s until the Transit Support s have been removed The Transit Support is secured to the main frame with four M6 Hex head bolts to the latch end of the door frame with one further M6 Hex head bolt on the underside of the door frame at the latch end Remove all five fixings before opening the door Check that the top of the latch cut out in the doors clears the top of the aluminium catch block by at least 2mm If this clearance is less than 2mm transit damage is likely do not use the SAMI2 before contacting Thermo Fisher Scientific or your local agent for further advice See Door Catch and Lock Replacement and Adjustment page 11 10 for further information The Door Transit Supports are unique to each door they bear the SAMI2 Serial No and F for the front door where applicable and so should be retained for futu
129. ng the Alarm displays If the ordinary alarm level is exceeded the Normal Alarm ALARM message will display indicating This Article is Contaminated that the article is contaminated Note that this message is user definable see Messages page 5 15 for more information Also an alarm will sound for 3 seconds even if the door is opened If the Lock Front Door on Alarm is set to All Alarms the door will be locked and can only be opened with intervention by an Administrator See Doors page 5 13 for more SAM12 User Manual 5 57 Operating Instructions 5 58 SAM12 User Manual Issue 1 0 information regarding Lock Front Door on Alarm If the High Level Alarm see Alarms page 5 12 1s exceeded HIGH ALARM the High Level Alarm message Siira will display Note that this message is user definable see Messages page 5 15 If the Lock Front Door on Alarm is set to High or All Alarms the door will be locked and can only be opened with intervention by an Administrator Please Call HP See Doors page 5 13 for more information regarding Lock Front Door on Alarm On a two door SAMI2 the front door will be locked and back door will be unlocked Also a high alarm will sound for 5 seconds If the count rate from any detector exceeds 95 of the OVER RANGE Amplifier dead time an Over Gia Range message 1s displayed stating that the measurement was over the operational range
130. ng this cover As seen on the FHT681 HV Amplifier board screen located inside the 5689A Electronics Housing CAUTION Isolate HV supply to the printed circuit board before removing cover With power connected and unit switched on a max voltage of 1500V DC with a maximum short circuit power of 825 milli watts is present CAUTION Risk of electric shock vi SAM12 User Manual Thermo Fisher Scientific WEEE COMPLIANCE This product is required to comply with the European Union s Waste Electrical amp Electronic Equipment WEEE Directive 2002 96 EC It is marked with the following symbol E Thermo Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State and this product should be disposed of or recycled through them Further information on Thermo Fishers compliance with these Directives the recyclers in your country and information on Thermo Fisher products which may assist the detection of substances subject to the RoHS Directive are available at www thermofisher com WEEEROHS Thermo Fisher Scientific SAM12 User Manual vii Issue 1 0 Contents Contents Manial Reyision alcii RETE UI T I 1 15 Toren ord P M i CMADICrT NATFOCUGTION RET T TE 1 3 Small Arncles Monitor eet 1 3 Chapter 2 DeSCIiptiOn cccccscscscesseeeneeseeneeseeneeseneeecenseseenseseensesoseesonseesonsess
131. nitoring Tima i Mion Monitoring Tara ih Quick Sean Pariad Backgecund Logging interval D hours Maa unkmant Conhiedanca 3 a a 730 Out of Serica Recovery ieierval 15 mins Description of options Probability of This 1s the probability that exactly one alarm Level Detection 6 of contamination will cause and alarm For further information see Description of Parameters Used in Calculations page 6 2 Note that the probability is also expressed as a percentage in parentheses Values 0 to 10 sigma in 0 1 sigma steps Default 1 65 o Probability of False This value is the probability that a false alarm will Alarm o NOT be given during a measurement This probability is used by SAMI2 to determine the monitoring time and the Effective Alarm Level and Minimum Detectable Activity For further information see Description of Parameters Used in Calculations page 6 2 Note that for simplicity the Probability of False Alarm is expressed as a percentage in parentheses Values 0 to 10 sigma in 0 1 sigma steps Default 3 1 Minimum Monitoring Note that the Minimum monitoring time must be Time s equal to or be less than Maximum Monitoring Time This is the Minimum time for which articles are monitored This field is used in conjunction with the Maximum Monitoring Time Values 3 to 300 s 5 10 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions Maximum Monitoring
132. nnector provides for compliance with EEE 02 11 USB Ports A four port USB version 1 1 hub is available on the side panel for peripheral interfaces such as memory sticks dongles keyboard mouse etc Printers A dot matrix printer is available as an option A0210A Contact Thermo Fisher Scientific for the latest model Power Requirements Voltage 85 to 264 volts AC Frequency 47 to 63 Hz Maximum power 65 V A Circuit Protection Integral mains fuse in Power supply 250V 2 A Battery Backup Battery type Sealed lead acid Battery capacity 12 volts 15Ah Battery support typically better than 8 hours Battery Fuse 5 x 20mm 6 3Amp quick acting Dimensions Height 46 1170 mm approximately all versions Width PA E 737 mm approximately max for 2 door versions Depth 36 25 921 mm approximately including door handles two door unit 33 25 844 mm approximately including door handle 6C 1D 2L SAM12 User Manual 3 5 Specification Dimensions of Measuring Volume Weight with 1 25 mm of lead shielding 4 detectors and one door Weight with 2 50 mm of lead shielding 6 detectors and two doors Temperature and Humidity 3 6 Magnetic Shielding SAM12 User Manual Issue 1 0 Height 15 381 mm Width 15 381 mm 2 34 cubic feet 66 Litres Depth 18 3 466 mm Single door 2 38cc 68L Depth 20 1 510 mm Double door 2 60cc 74L SAM12A 4C 1D 1L 770 K
133. nnel the fault is in the HV and Amplifier PCB and this should be replaced as defined in FHT681 cards SAM12 User Manual 11 15 Maintenance and Trouble Shooting Issue 1 0 Removal and Replacement page 11 6 channels show a background count significantly greater than that expected the SAM12 1s experiencing an elevated background Proceed as follows e Check the area immediately around the SAMI2 for sources of any possible contamination e Measure the ambient background level with a suitable survey monitor If the background 1s high it must be reduced or the SAMI2 moved for normal monitoring operation to resume IF THIS CONDITION PERSISTS and the background and measurement limits seem to be reasonable frisk inside the monitor cubicle for a possible build up of contamination Fails Lamp or LED Tests A power on Self Test lights each lamp amp LED in turn If any lamp or LED fails to light in sequence except the charging LED proceed as follows using Diagnostics Vault to re test lamps as required 1 Check the connections to the lamp assemblies and to the Controller board 2 Any device failure will need a replacement board 3 Ifthere are two lamp assemblies and neither are functioning then a fault on the Controller board is indicated and it should be replaced as described Controller Board type 5670A Removal and Replacement page 11 6 Fails Loudspeaker Test A power on self Test produces a beep tone
134. ns power supply 1s a proprietary high frequency switched mode 50 Watt converter The power module can accept a mains input of 85 V to 264 V 47 Hz to 63 Hz the output is between 12 and 15 V at 3 5 A The actual output voltage is controlled by the 5660A The power supply is capable of charging the battery at a maximum rate of 3 3 A up to 40 C This module contains AC Mains and dangerous DC switching voltages It should not be operated with the protective cover removed or the mains ground earth conductor disconnected Itis not user serviceable and should be returned to Thermo Fisher s Service department for repair LCD Display and Controller I F amp Backlight Inverter Module The LCD module is fitted with an integral Cold Cathode Fluorescent CCFL back light The back light is driven from a proprietary inverter mounted in a small screened box within the display The inverter generates dangerous high voltages and RF interference frequencies and should not be operated outside the box or with the display lid removed The LCD is controlled via a proprietary serial interface device also mounted in a small screened box within the display Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Technical Description Circuitry Neither the display or the back light inverter or the controller are user serviceable and should be returned to Thermo Fisher s Service department for repair General Electromagnetic Compatibility
135. nt Results Report 5 39 Menu Roles 5 5 Messages 5 15 Moving through the Menus 5 4 N NBR method 9 5 Normal Background Monitoring 5 49 Notes regarding Changing Background 5 51 Notes regarding High Background 5 62 Notes regarding Illegal Door Operations 5 52 Notes regarding Low Background 5 63 Notes regarding Normal Background Monitoring 5 49 Notes regarding Residual Contamination Check 5 60 Notes regarding Two Door SAMI2 5 14 Number Functions 5 1 O Operating Instructions 5 1 Options 5 6 Out of Calibration 5 47 P P 6 4 Params 1 5 8 Params2 5 10 Params3 5 11 Passwords 5 42 Performing the HV Scan 9 4 Power Supply Replacement 11 4 Pre defined Functions 5 2 R RAct 6 5 Recount 5 56 Remove Articles 5 61 Replacement of the Charger PCB 11 5 Replacement of the Controller board 11 6 Issue 1 0 Replacement of the FHT681 PCB s 11 7 Replacement of the LCD Display Touch Screen Touch Controller and Backlight Inverter 11 8 Reports 5 31 Residual Contamination Check 5 59 Routine Checks 8 1 S Setting Up Procedure 9 1 Spares List 12 1 Specification 3 1 Start Up Checks 5 46 System Menu 5 40 System Setup 5 41 T te 6 2 Teal 6 3 Technical Description Circuitry 7 1 Technical Description Physics 6 1 Temporary Error 5 62 Thresholds 5 28 Timed Counts 5 17 Tina 6 3 Lain 6 3 T oti 6 3 To unpack the SAMI2 4 1 U Unpacking and Installation 4 1 User Screen
136. ntegrations per minute Efficiency Correction Factor Probability of False Alarm Figure of Merit Person Persons or Team responsible for setting up day to day running and maintenance of the SAM12 Health Physicist High Voltage kiloBecquerel Lead Liquid Crystal Display Light Emitting Diode Minimum Detectable Activity Milli Curie Minimum Detectable Activity Natural Background Reduction SAM12 User Manual G l Glossary nCi nCi NORM P PCB pCi Quickscan RAct RCC SAM Technician tB Tcal ThermoFisher Tmax Tmin Tmon User V Gill SAM12 User Manual Issue 1 0 nanocurie Naturally Occurring Radioactive Material Probability of Detection Printed Circuit Board picocurie Method used to identify within the monitoring time see Tmon whether the article is either clearly contaminated or clear referred to as real dirty or real clean Activity of Contamination Residual Contamination Count Small Article Monitor Personnel who normally repair and maintain the instrument in working condition Background Update Time Calculated Monitoring Time Personnel who are general users of the system and normally carry out routine diagnostic and test functions Maximum Monitoring Time Minimum Monitoring Time Actual Monitoring Time Anyone associated with or operating the instrument voltage Thermo Fisher Scientific Issue 1 0 Index Thermo Fisher Scientific A A 6 5 Actions 5 4
137. nter fitted to door the M5 screws are secured with M5 crinkle washers and M5 nuts 3 Replace and secure Lever Catch and before fully closing door check that top of Catch Plate 1s positioned approximately 3mm above top of Lever Catch when viewed from the front adjust vertical position of Catch Plate on the Main Frame if required Further vertical adjustment of the Door Lever Catch 1s available by way of the slotted holes in the Lever Catch mounting plate located inside the hollow door frame section Slacken the three M4 Nuts securing the mounting plate to the inside of the door section and adjust the Lever Latch as required Note If it is necessary to replace the stainless steel Strike Block undo 8 32 UNC grubscrew and unscrew strike block from chrome Catch Plate Replace stainless steel Strike Block and adjust its position until shoulder of block protrudes 2 to 3mm from boss on Catch Plate and secure with 8 32 UNC grubscrew Thermo Fisher Scientific Issue 1 0 Replacement Door Stop Thermo Fisher Scientific Block 4 6 Maintenance and Trouble Shooting Carefully close door and check that catch Strike Block just clears inside edge of Lever Catch if necessary adjust horizontal position of the aluminium catch block Note It is permissible to file a small chamfer on the outer strike end edge of the stainless steel Strike Block to just achieve a running clearance 1f necessary Check that door i
138. ntroller board Table 4 Summary of the Controller Board Inputs Input Connection Function PL24 Door Switch dirty PL27 Solenoid Status dirty PL29 Solenoid Status clean Replace the Controller board as described in Controller Board type 5670A Removal and Replacement page 11 6 if the switches are working correctly If the SAM12 has acquired a valid set of background readings but will not enter measurement mode when a sample 1s entered and the Start switch is operated proceed as follows 1 Check that the Start switch 1s working correctly by using Diagnostics Vault The switch is situated in the left hand side of the front panel Replace 1f necessary Thermo Fisher Scientific Issue 1 0 Locked in Measurement Mode USB Output Data is Thermo Fisher Scientific Corrupted Maintenance and Trouble Shooting 2 Check the continuity of the cable connecting the Start switch to PL20 on the Controller board Replace if necessary 3 Restart the instrument If the fault persists replace the Controller board as described in Controller Board type 5670A Removal and Replacement page 11 6 If the SAMI2 becomes stuck in a monitoring cycle with the display showing Count Time Remaining xx seconds it 1s likely that microprocessor has crashed Power down and check again Continual crashing may indicate that the Controller board needs replacing as described in Controller Board type 5670A Removal and Re
139. nual has been written primarily giving instructions for the touchscreen commands It is also possible to use a USB keyboard and mouse to communicate with the SAMI2 This section describes the methods that are common to all the entry and data viewing operations in the Parameter Mode menus When using the touchscreen directly touch the menu options on the screen when selecting a function CAUTION IT IS ADVISED TO USE A CLEAN FINGER TO TOUCH THE SCREEN DO NOT USE SHARP OBJECTS ON THE TOUCHSCREEN SUCH AS PENCILS PENS SCREWDRIVERS ETC When touching the screen in a numerical field the following number pad appears lt Function Name gt fil il ae ees nnn Min minimum value Max maximum value gt SAM12 User Manual 5 1 Operating Instructions Alpha numerical Functions Pre defined Functions Date Functions File Location Functions 5 2 SAM12 User Manual Issue 1 0 Note that the Function Name minimum and maximum values are displayed depending on the function selected If an illegal value is entered the value is highlighted in red avenge Ove ono DNNEEEEEEN When touching the screen in an alpha numerical field the following keyboard appears c 1 ajspsyaspspsipsispsla ms Ead bd Rol ioi CO Kol fl AN DATACARD wd J A dd 8 When touching the screen in a pre defined field the following window appears E EX OK Cancel When touching the screen in a date fi
140. o Fisher Scientific Issue 1 0 Thermo Fisher Scientific Select Set Up Params to customise the first set of Operational Parameters Operating Instructions 11 958 DLL FER cU RI Haters Lusit os uc Lew Background Alarm i epa mem Grew Changing Backgrmund 5 of Diot Caa Detecior Changing Backgreund fF m tU Chang Condoni m a 000005 E Changing Conditions Panos m acm RCC Contamination Threshold F a 100 000 ETE Default Cakbegtion Source Calbrabaon Required inbicenl n i Days Max Ciaar Raaut Daplay Tena ho ane acies f b Description of options Low Background Alarm cps Gross Changing Background 6 Detector Changing Background 6 Changing Conditions c Changing Conditions Period s RCC Contamination Threshold 6 Calibration Check Accuracy 96 Default Calibration Source Calibration Required Interval If a background measurement falls below this value counts per second a detector failure will occur Values 0 to 99 999 cps 0 to disable Default 50cps This statistical variable is used by SAMI2 to determine if a changing background condition exists on all detectors Values 0 1 to 7 sigma in 0 1 sigma steps Default 5 o This statistical variable is used by SAMI2 to determine if a changing background condition exists on a single detector Values 0 1 to 7 sigma in 0 1 sigma steps Default 7 o This statistical variable is used by SAMI2 to determine if a
141. oceed to LCD Keypad Inoperative or Not Aligned page 11 17 If the SAM12 Starts and runs but will not respond to password entry or returns incorrect characters on the LCD display a fault is likely in the Controller board or possibly the keypad Proceed as follows SAM12 User Manual 11 17 Maintenance and Trouble Shooting Will not Enter Background 11 18 Mode Locked in Background SAM12 User Manual Mode Issue 1 0 1 Check the cable connections between the Touch screen keypad and the Controller board 2 Temporarily plug a spare LCD assembly into the control board If this solves the problem the original Touch pad is faulty and should be replaced as described in LCD Display Touch Screen Touch Controller amp Backlight Inverter Removal and Replacement page 11 8 3 The fault is likely to be in the Controller board which should be replaced as described in Replacement of the Controller board page 11 6 If after power up or after exiting from the main menu the SAMI2 displays Cannot Measure Background Please Close the Door a fault with the door switch system is likely Proceed as follows 1 Check that the door switch is working correctly by selecting Diagnostics Vault The switch is situated in the left hand vertical box section of the main frame and is operated by closing the door Replace any switches if necessary 2 Check the continuity of the cable connecting the door switch s to the Co
142. onss 2 1 Main Frame T ype 3509 aaseescadasieisitesevis ie iN s qb a EERS NE IAM ERAR 2 1 Scintillation Detector Type 5569A sscceceeoccssssssseseecccccoccccossssssssececccoccecococssssssssssccecccccessssssssssse 2 1 Electronics Chassis Type 3089A 2 1 Controller Board Type 5670A 507 L scssssssssscsssscccccecccccccsocscssscccccccccceccosssssssscccccceccecesecssssso 2 2 DC DC Converter Board Type 5675A ssssseccesccccccecccocsescccccccccccceccococosscccceccceceeecosesessscssseceseceecee 2 3 Battery Controller Board Type 56604 ssssssseccccccccccccsssssssccececcccccccosssssssscesscccecececccsosssssssssseee 2 3 FHT681 Scintillation HV and Amplifier Type 42543 0223 sssssssssssssscccccccccccssccccssssees 2 3 FHT681 Coincidence Detector Card Type 42543 0224 sssecccccccccccossssssssccescccccoceccccssssssssseceee 2 4 Visual Indicator LED PCB Type 5672A 4552 25 5 2222229422 3222222529258 955 0 0 6 0 9606 cepeocbe 2 4 Chapter a SPEC ANOT usse cari ERE TOS EO E6008 ae eee asses 3 1 Operatori L PaEae GES 340i ode cece asc Cosas pF ee crest eeves Ope aaa ota a e TELE EFE epos Ure ata OPe SERRE RUE 3 2 unc e 3 2 Nault ODDS iaceo HERO EIER IRURE E NEIN II 3 2 I EIU CPI m 3 2 Backeroimid Capability siss EA 008 0000 00 0050000000 0000 5105
143. ortion of the Total System Systems efficiency i e approx 10 each for Co If one of an opposite pair of detectors 1s high and the other is low then the source is probably off centre 6 Individual top bottom left amp right efficiencies Detector should be approximately equal Systems The front and back detectors will be slightly lower efficiency than the other four detectors due to geometric effects 1f the source is in geometric centre of volume If the overall system efficiency or any individual detector efficiency 1s too low or too high consider the source values at the next HV step review the background Criteria in Tests 1 amp 2 and the Source Criteria in Test 3 Repeat this process if necessary NOTE The Minimum Detectable Activity MDA is proportional to the square root of the Background lower background improves reduces the MDA Therefore Squeezing a few extra source counts at the expense of a significant background increase will be detrimental Variance Testing When the system has been set up a background stability test usually referred to as a variance test should be performed This 1s a test to measure the deviation of the distribution of background from a perfect Gaussian distribution This is equivalent to a Chi squared test See Variance Test page 5 17 for further information regarding how to set up the variance test The variance test result 1s the SAM12 User Manua
144. oval and Replacement SAM12 User Manual Issue 1 0 Switch off the power power down the SAMI2 and remove the top cover as described in Removal of the Top Cover page 11 3 The 5670A Controller board is situated in the front centre of the Electronics Chassis adjacent with the loudspeaker Before attempting to remove the Controller board ensure the power cable is removed from PL13 To remove the PCB first disconnect all the cables around the periphery of the board Remove the two screws retaining the PCB to its mounting spacers The PCB 1s now free to be removed from the Electronics chassis Replacement of the Controller PCB is the reverse of the removal procedure Should the Controller thought to be faulty it should be replaced with an identical unit See Recommended Spares List page 12 1 set the Link and Switches as follows LKI EE LK8 WARNING THE HV amp AMPLIFIER PCB S GENERATE DANGEROUS HIGH DC VOLTAGES EXERCISE CAUTION WHEN SERVICING ALWAYS ALLOW THE HV TO DISCHARGE BEFORE COMMENCING WORK Switch off the power and remove the top cover as described in Removal of the Top Cover page 11 3 The FHT681 cards 4 maximum are mounted vertically in line on the right hand side of the electronic chassis They are Thermo Fisher Scientific Issue 1 0 Replacement of the FHT681 PCB s Removing amp Replacing the Mains Inlet Filter Assembly Thermo Fisher Scientific Maintenance and Trouble Shooting
145. placement page 11 6 possible that the hard disk may have suffered some damage in this area of the program If the problem persists even after changing the Controller board a new disk should be considered If USB data output from the SAMI2 to a serial printer or external computer contains spurious characters or is corrupted in any way check the following possible causes 1 If no output whatsoever is received check the data cable connections see Displays page 3 4 2 Ifa USB printer is involved perform a printer self test to determine whether the printer itself is at fault SAM12 User Manual 11 19 Issue 1 0 Spares List Chapter 12 Spares List Recommended Spares List The following spares are recommended on the basis that first line service 1s best performed by changing modules CONTROLLER BOARD 5670A ETX Processor 702695PE SECURITY DONGLE A92169 A BATTERY CONTROLLER BOARD 5660A HV amp AMPLIFIER BOARD FHT681 425430223 CCM BOARD FHT681 425430224 LOUDSPEAKER 91603 A START SWITCH 701829K G DOOR SWITCH 406859KG TOUCH SCREEN 702633ND TOUCH SCREEN CONTROLLER 702632ND DYNODE CHAIN A3 54040 Thermo Fisher Scientific SAM12 User Manual 12 1 Spares List SAM 12 only LAM I2 only 12 2 SAM12 User Manual Spares List ETX CONTROLLER BOARD ETX Processor DUAL CHANNEL RS422 BOARD 5 WAY LED CLUSTER BATTERY CONTROLLER BOARD BATTERY TEMPERATURE SENSOR HV amp AMPLIFIER BOARD CCM BOARD SCINTILLATION DETECT
146. process Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Operating Instructions To Save the Scan A press Save to Please enter a scan description optional display the Please enter a scan description window Save Abort Enter a Scan Description and EEE p press Save button to display the m Scan results Lr ka z i ZEE i EL i 4 P g Select either Gross Counting or NBR option and Apply Settings to save the Scan Note that selecting NBR enables the NBR Enabled option in the Options screen see Options page 5 6 Press Cancel Changes to quit without saving or press Back to return to the Start new scan screen To view the HV Scan as a iin GEH CE TERI UI CES CEN Table press the Table button to mm display the scan results EE c gm EH ms Counting iini mm B Thermo 111345 To view the HV Scan as a mmm mcm Graph press the Graph button to lt display the scan results ee ee a lt en a 1 To view the last saved HV Scan press the Last HV Scan button to display the scan results r Gross Counting Apply Cancel 8 NBR Settings Changes ack SAM12 User Manual 5 27 Operating Instructions Thresholds Hv Power Attenuation 5 28 SAM12 User Manual Issue 1 0 See Performing the HV Scan page 9 4 for more information regard the HV Scan
147. r Articles message See Notes regarding Normal Background Monitoring page 5 49 for more information In this case to re start the monitoring of an article the door needs to be re opened and shut again Once monitoring commences the SAMI2 displays the Counting Counting message with an indication of the measurement time remaining 7 Seconds Remaining If the door is opened while the measurement is in progress audible and visual warnings are given and the measurement is aborted The Measurement Aborted Please Close Front onde dd i Door message 1s displayed Measurement Aborted SAM12 User Manual 5 53 Operating Instructions Background Change during 9 54 Measurement SAM12 User Manual Following this Measurement Aborted message once the Door has been closed the Ready PUN AMI PON Push Start Button to Begin Los pags Recount message is displayed If the door is closed and the diced START button is pressed within amp the Measurement Start Timeout the Monitoring proceeds If the START button is not pressed within the Measurement Start Timeout the Normal Background Monitoring is resumed and SAMI2 displays the Ready Open door to Monitor Articles screen Ready If the background changes during a measurement a warning message is displayed stating Changing Conditions Please Remove Articles Changing Conditions Please Remove Article A new background che
148. rces to maintain statistical accuracy against adverse background influences 2 A source holder to securely retain the source for positioning within the cubicle 3 A generic USB printer e g Epson LX300 Preparation for Calibration First the user must enter the Calibration Menu page 5 19 Select HV Scan page 5 25 and check the detector HV s are set correctly for the Calibrating isotope If these are not known they must be determined as described in Detector HV Selection page 9 3 before proceeding with the calibration The SAMI2 is then ready for calibration Calibration Ensure the background is stable the door is closed and any calibration sources are well away from the SAMI2 at least 8 feet 1 Ensure the door is shut and the unit is on and ready 2 Login to the Administration mode using the Health Physicist role see Gaining Access to the Administration Mode page 5 3 See Cal Check page 5 19 for more information To check the calibration the Cal Check button is selected This does not allow the calibration factor to be changed but a comparison is made between the old and new factor To recalibrate the instrument 1 e adjust the calibration factor for a particular nuclide the Calibrate button 1s selected The calibration process should be repeated for a number of nuclides that would be found in typical contamination As a minimum a calibration to both 137Cs and Co should be undertaken The Cs ca
149. re use SAM12 User Manual 4 3 Unpacking and Installation Fitting the Door Handle s Door Operation 4 4 SAM12 User Manual Issue 1 0 when transporting the SAM12 over any distance or in situations when rough handling is possible The SAM12 is shipped with the door handle s removed and packed inside the measurement cubicle Remove the protective packaging and fix the handle s securely to the front left hand ledge of the door frame using the M6 and M8 hex head bolts and washers supplied these are shipped screwed into the door frame s Note that the Door Handle no longer reversible is deliberately oriented biased inboard of the door such that the main tube is in direct vertical alignment with the Door Latch Lever This limits the travel of the latch lever and prevents excessive force damaging the latch It also makes single hand door operation equally easy for Left handed and Right handed users Previously incorrect installation resulted in excessive latch wear and premature failure Check for smooth operation of the door latching de latching mechanism If any adjustment is necessary refer to Replacement and Adjustment of Chrome Lever Catch page 11 10 after the Electrical Installation page 4 5 1s complete NOTE The doors are a fabricated and welded construction which will not be manufactured exactly square Some out of square deflection will also result from loading the lead particularl
150. regarding acquiring a background When a new Background has been established the Ready Ready OPEN DOOR TO MONITOR ARTICLES message is displayed The SAM12 is now ready to start monitoring articles OFEN DOOR TO MONITOR ARTICLES Reedy Chea If the front door is opened when the SAM12 is establishing a new sibi background background counting stops the Close Door To Resume message 1s displayed and an audible alarm will sound To continue with the process the door s must be shut _ Close Door To Resume If the back door 1s opened when the SAM12 is establishing a new background background counting stops the ILLEGAL DOOR SEQUENCE message is displayed and an audible alarm will sound To continue with the process the door must be shut See Doors page 5 13 for more information Thermo Fisher Scientific Issue 1 0 Operating Instructions Normal Background This is the normal dormant state Monitoring ofthe system Normal Background Monitoring is continuous until 1 A door is opened probably as part of a measurement cycle amp see Door Operations page 5 51 Sm for more information f L OPEN DOOR TO MONITOR ARTICLES 2 A change in background is detected see Changes to the Normal Background Monitoring page 5 49 for more information 3 A high or low background condition is detected see Notes regarding High Background page 5 62 for more information
151. rge area detectors of the SAMI2 make it very sensitive to changes in background Therefore it is recommended that the installation site be chosen for background stability and to minimise the effect of statistical fluctuations It is recommended that the SAMI2 be installed away from active areas to suit both these needs If the background field at the installation site 1s directional it 1s recommended that the SAMI2 be installed so that the back of the Cabinet faces the field source This orientation should minimise the penetration and scatter of background radiation around the door aperture although the advantage 1s small After Installation of 2 door SAM 12s ensure both doors are closed before switch on Thermo Fisher Scientific Issue 1 0 Chapter 5 Administrator Mode Using the Touchscreen Functions Number Functions Thermo Fisher Scientific Operating Instructions Operating Instructions Operational States There are two operational states for the SAM12 ADMINISTRATOR Mode this mode allows the instrument to be configured calibrated and diagnostic checks to be run Access to this state requires a username and password See Administrator Mode page 5 1 for further details USER Mode this mode supports the normal monitoring of samples Any user can operate the instrument in this state See User Mode page 5 45 for further details Note that communications with the SAM I2 is via a touchscreen and this ma
152. rt is displayed in the Operational Mode display bar PUSH START BUTTON TO BEGIN MONITORING If the door is not closed within 10 e seconds a repeating alarm shall b be sounded The Ready PUSH START BUTTON TO BEGIN MONITORING message is displayed The ILLEGAL DOOR SEQUENCE Please close both Gesaan doors message is displayed under the following circumstances Please close both doors If the back door is opened on a two door SAM12 when attempting to deposit an article Cui CH Sarica If both doors are opened at the same time on a two door SAM12 Thermo Fisher Scientific Issue 1 0 Commence Monitoring Thermo Fisher Scientific Operating Instructions If a locked door is forced If the back door is opened on a two door SAMI2 following an ALARM result In all cases the Alarm will sound at full volume until the door s are closed Following this ILLEGAL DOOR SEQUENCE message eee cups c and the doors have been shut a Residual Contamination Check will be enforced before normal operation can resume 17 SECONDS REMAINING See Notes regarding Residual Contamination Check page 5 60 for more information Press the START button to commence monitoring If the START button is not pressed within the Measurement Start Timeout see Params 2 page 5 10 for more information Normal Background Monitoring is resumed and SAMI2 returns to the Ready Open door to Monito
153. rther information see Actions page 5 40 Upon exiting from the Keypad Parameter Mode a Residual Contamination check will be enforced if the previous operational state was an Alarm or Residual Contamination condition see Notes regarding Residual Contamination Check page 5 60 Setup Menu Options Select Set Up Options to xs Geis Gi See customise the SAM12 s Le SS operation Cat Eran F NBR Enabled Hint H s muat ba asi for NE r Auto Recon T Manual Recount T Residue Conteminabon Chack after Alan C Reads Conteminaban Check before Backgenund Check Show Unzain Value On Pau Show Actrety Value Never Gn Alam On All Description of options Default Units Use the pre defined window to select a unit from one of the following 5 6 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 CCM Enabled NBR Enabled Thermo Fisher Scientific Operating Instructions dpm Bq kBq pCi nCi uCi mCi Ci This changes the displayed activity units for the SAM12 Default dpm Use the pre defined window to select a language This changes the displayed language for the SAM12 This option may be enabled to allow real dirty or real clean to be identified before end of monitoring period Also see Quick Scan Period in Params 2 page 5 10 QuickScan is disabled during automatic and manual recounts Note that it is not possible to tick Quick Scan and CCM Enabled at the same time
154. s Changed Changing Background Instrument Parameters Changed Changing Background Changing Background Changing Background Changing Background Changing Background Changing Background Instrument Options Changed Door Violation Additional Info CAL Co 60 Category Info Info Info Info Info Info Info Info Info Info Info Info Info This report lists the HV Scan details between the selected Start and End dates It is possible to limit the report by Start and End Date HV Scan List ID Scan Date Start HV End HV step HV 1 16 10 2006 500 1200 50 14 31 11 2 16 10 2006 500 1200 50 14 54 45 3 02 11 2006 500 1200 50 13 55 33 4 02 11 2006 500 1250 50 16 35 25 5 06 11 2006 500 1200 50 13 46 31 6 09 11 2006 500 1200 50 16 19 59 T 14 11 2006 500 1200 50 14 29 31 8 24 11 2006 500 1200 50 08 43 49 s 24 11 20nn amp 8 Rn 1200 AN Press on one of the ID records to display the HV Scan Detail for the selected Scan ID step Period 10 10 10 10 10 10 10 1n Description First scan before calibration has occurred Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Please note that the report below is an example and does not Operating Instructions display all the information HV Scan Detail Scan lD 2 Scan Date 14032007 11 05 17 Screen dump Scan Voltage 700 FOS 10 715 rau T25 DU 2 35 rag 745 750 755 760 765 rU mB5585 E d
155. s Self Tests 11 14 no chimes Will not run amp displays Out Of Service Low Background Counts SAM12 User Manual Issue 1 0 7 Switch unit OFF and replace the Controller board as described in Controller Board type 5670A Removal and Replacement page 11 6 8 Ifthe SAMI2 is still dead after changing the Controller board contact Thermo Fisher Service department for further help If the SAM12 starts but fails to chime ding dong within 60 seconds of being switched ON then it has not successfully completed the power on Self Tests and a fault 1s indicated Observe the LCD display if a fault message is displayed refer to subsequent subsections If however the display is blank or the message is unintelligible it 1s likely the Controller board has a serious fault and the microprocessor has I O problems or has crashed Replace the Controller board as described in Controller Board type 5670A Removal and Replacement page 11 6 The blue FAULT lamp is lit see Fault Messages page 11 1 for an explanation of the fault messages The Self Tests have detected the background count from the detector channel 1s below the Low Background Alarm value set in Params page 5 8 Proceed as follows 1 Enter a valid password and Setup Params 1 Check that the Low Background Alarm is not set to an unreasonably high value for the prevailing background condition 2 Select Calibration HV Scan and check the HV settings
156. s for the Software Options Background Capability Background capability is related to alarm threshold and statistical certainty requirements Background subtraction is included in the measurement routines for the detectors When the isotope of interest 1s of low energy level the energy window can be changed to lower the background count rate thus allowing greater statistical certainty see Hv Power page 5 28 and Selection of Detector Operating Parameters page 9 3 The mean background count rate for use in measurement calculations 1s accumulated from a series of 10 second counts with a maximum of 10 results stored at any one time The mean background count rate 1s therefore based on a 100 second count which is maintained on a rolling average basis A significant change in the measured background count rate from the mean will cause the SAMI2 to discard the current mean value and restart background monitoring see Changing Background page 6 5 If due to heavy use the SAM12 has been unable to measure background for 15 minutes a 1 second background count 1s performed immediately after the current monitoring sequence If no significant change 1s detected the machine will be available for further monitoring If a change in background is detected further background measurements are performed until Thermo Fisher Scientific Issue 1 0 Four or Six Detectors Detector HV settings Energy Window Thermo Fisher Scientific
157. s i 120242 Ir E Bum tuu Datery reed Select Diagnostics Variance Test emm oo Background Stability Check to setup the background Enter Test Parmer monitoring over a number of oc MENT cycles to obtain a figure of ES 2 2 2 4 vq Dais Lower Vanance Lira T3 stability mug Stact f E Description of options Field Name Description Number of Cycles Enter the number of background measurements to be used in the test Cycle Duration Enter the duration of each measurement seconds Upper Variance Limit Enter the Upper Variance Limit for the result Thermo Fisher Scientific SAM12 User Manual 5 17 Operating Instructions Issue 1 0 Note that this value should initially be set to 1 5 Lower Variance Limit Enter the Lower Variance Limit for the result Note that this value should initially be set to 0 67 Enter a description of the test 13347 1 P nde bo mma IE Background Stability Check Once the options have been set press Start for the Background Stability Check to run A progress window is displayed Progress Cycles Compleied E af Ti Rimang coco es i Overall C v5 Bic 103708 em rics Ce eed ed Background Stability Check Press Abort button to abandon the check If the check is left to a run the results are displayed as mem utes o ce Genesis follows Em Press Back button to return to the
158. s of detection This section summarises the calculations employed by the CPU in determining whether the parameters selected by the user allow the monitor to operate correctly The section then shows the criteria used to determine whether an alarm has occurred during a measuring sequence The parameters used in the calculations are summarised and abbreviated as follows tB Background Update Time seconds is the time over which the average background counts have been accumulated this is a fixed 100 second rolling average in the SAM Background measurements can only occur when the door is shut Thermo Fisher Scientific Issue 1 0 B sum Bert Teal Tmon Tmin Tmax CAct Thermo Fisher Scientific Technical Description Physics Total Average Background Count Rate cps is the sum of the mean background of all the detectors measured over the background update time tg This 1s a fixed 100 second rolling average in the SAM See Notes regarding Normal Background Monitoring page 5 49 Effective Background while Monitoring cps is the sum of the mean background of all the detectors Bsum corrected for the effect of attenuation Calculated Monitoring Time seconds is the minimum time required to perform a measurement according to the calculation in Calculation of the Monitoring Time Tcal page 6 6 The specified alarm level must be achieved with the required certainty in the Monitoring Time which will depen
159. s produced whilst in the application are directly controlled by the software written by Thermo Fisher Scientific whereas errors reported from the motherboard Bios or the Window s operating system will be supplier dependent On switching ON the screen will remain blank for several seconds whilst the Bios carries out basic checks on the motherboard The screen will eventually show scripting which details the progress of these initial tests Should a fault be found the process will halt with the fault error detailed This should be recorded and reported to Thermo Fisher Scientific s service department The equipment cannot be used until the fault 1s removed It must be noted that a failure of the LCD backlight module will leave the display blank even though boot up 1s taking place correctly In a normal boot up the Bios sequence of tests will be followed by loading the operating system from the disk drive signalled by the Thermo Fisher Scientific log screen Any failure here will result in a blue screen Again you will need to contact Thermo Fisher Scientific s service department if this does occur Finally the application software will be loaded and the SAMI2 User screen will be displayed The application is entered with tests to verify the detection components are working correctly Should a failure occur during these initial checks then the Out of Service message will appear on the message bar and one of the following wi
160. s secured in closed position and that a very small clearance less than 0 2mm exists between door and stop block If necessary adjust the thickness of catch shim by adding or removing 0 05 0 1mm laminates to obtain the correct clearance Replace and secure door cover Adjustment for Two Door Units ie Open door and note vertical position of catch Strike Block Remove Strike Block and add a 1mm catch shim or alternatively undo 8 32 UNC grubscrew until block is free to rotate unscrew block one turn and secure in position with 8 32 UNC grubscrew remove 0 4mm of laminates from existing catch shim Replace catch Strike Block and secure in vertical position noted earlier Close door push start switch pull and release door catch handle Open opposite door and check that the door with the new catch has not been released If further adjustment 1s required add shim in increments of 0 1mm Open door and remove existing stop block using a 25mm wide wood chisel Scrape off any traces of adhesive from frame Undo the M4 x 10mm long countersunk screws securing the main liner in 8 positions and remove the liner Undo the M4 x 10mm long countersunk screws securing the switch assembly in 2 positions to prevent accidental damage to switch during adjustment procedure Carefully close the door and measure gap between door and frame dimension A Measure the thickness of door stop and add 0 25mm dimension B Adjust the thickness
161. ser Manual 5 29 Operating Instructions Issue 1 0 CCM Menu Note that this menu option 1s only displayed 1f the CCM Enabled option is ticked in the Options page see Options page 5 6 CCM Setup Select CCM Setup to select the parameters for the CCM Channel Comcidence Penod lE m Note that this section 1s set by at production and should only be changed in consultation with Thermo Fisher Scientific Description of options Coincidence This 1s the high threshold for summed pulses Threshold mV Coincidence Period This is an estimate of the Coincidence Period set in ns nanoseconds Information Select CCM Information to view the status information for the CCM Channel Background Rate D cpa CCM Efficiency aT x Hat EMectiwe Alam Rate tpa F 5 7 a T s amp 8 Description of options MDA default units Note that this is a view only field The Minimum Detectable Activity MDA is a value derived by the SAMI2 and is the smallest activity that can be statistically accurately detected with the current settings and background The MDA is calculated using the probability of detection probability of false alarm monitoring time and the average background etc Dashes are shown if this value is not available Detection Limit cps Note that this is a view only field This is the MDA expressed in counts per second 5 30 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Thermo Fisher
162. splay assembly Take care in removing the connecting cables Both the Touch Controller module and the Back light Inverter are propriety items and are not user serviceable They should be returned to Thermo Fisher Scientific s service department for repair or replacement Four screws attach the LCD shield to the front bezel On removal the LCD and shield can be lifted from the bezel and touch screen itself sitting 1n a recess of the plastic bezel The touch screen is not fixed to the bezel Another four screws hold the aluminium shield to the LCD via spacers Replacement of the LCD Display Touch Screen Touch Controller and Back light Inverter is the reverse of the removal procedure Should any item be thought faulty they should be replaced with an identical unit See Recommended Spares List page 12 1 It is necessary to take special care in handling the Touch Screen and LCD to keep all faces free of dirt and finger marks Disconnection and removal of these items are obvious The LED s are propriety items and therefore are not user serviceable They should be replaced with identical parts as detailed in Recommended Spares List page 12 1 Thermo Fisher Scientific Issue 1 0 Start Switch Keyswitch and Loudspeaker Removal amp Replacement Removal Detector Replacement Setting up Replacement Detectors for Use Thermo Fisher Scientific Maintenance and Trouble Shooting These items are unlikely to fail or need
163. t Tick this option to allow the user to initiate a recount after a measurement has been completed but before the door is opened and the article is removed Default OFF Residual Tick this option to enable a Residual Contamination Contamination Check Check to be automatically performed following an after Alarm Alarm For further information regarding Residual Contamination Checks see Residual Contamination Check page 5 59 Residual Tick this option to enable a Residual Contamination Contamination Check Check to be automatically performed before Normal before Background Background Monitoring commences See Normal Check Background Monitoring page 5 49 Default OFF Show Uncertainty Note that the Show Uncertainty Value on Result Value on Result and Show Activity Result option combine to display the information on the result screen When this option is ticked the Uncertainty value is included in the result if the Activity is also displayed See Monitoring Result page 5 55 for more information Default OFF Show Activity Result Click on one of the radio buttons to select one of the following Never the Activity Value will not appear in the result screen On Alarm the Activity value will only be displayed if an alarm occurs On All the Activity Result will be displayed for all results See Monitoring Result page 5 55 for more information Default Never Params 1 5 8 SAM12 User Manual Therm
164. tery Removal and Replacement ue eoe Lote senis a an chiedi tetas RR Ras t aes 11 5 Battery Controller Board Type 5660A Removal and Replacement 11 5 Controller Board type 5670A Removal and Replacement eeeeeeesusee 11 6 FHT681 cards Removal and Replacement eene 11 6 Removing amp Replacing the Mains Inlet Filter Assembly ccccseessseceeeeeeeeeeeeeeeeeens 11 7 LCD Display Touch Screen Touch Controller amp Backlight Inverter Removal and LESTIE TOIT 0 ey 0 eRe a a eae IRR I REN RE ec eR eee PUE DNA 11 8 Front Rear Panel LED s Removal amp Replacement sese 11 8 Start Switch Keyswitch and Loudspeaker Removal amp Replacement 11 9 Detector Removal and Replacement eee Lecce eee e eee eee ee eee e ees sette eee esosssss eee tee sooo 11 9 ENEIRIL0N 771 MR c Y cr POS 11 9 Detector Replacement e oed seite a tareditet iate is iubema dae sette ione ode Ein 11 9 Setting up Replacement Detectors for Use ssssseee nennen 11 9 Door Lua brian oec 11 10 Door Catch and Lock Replacement and Adjustment e eeee eee e eee eee ee e eerte eene 11 10 Replacement and Adjustment of Chrome Lever Catch esse 11 10 Replacement Door Stop BloCk scape sic Mates ed tetbesez tas cee a padesbib
165. tes on Orientation and POSItiONING ccrcccsssssssssssssoveccccccrscssscsssssssseeesssssocsceccooscsesssssseeeeses 4 6 Operating Instricll Tis oisinnean ia aiaa iania iaa 5 1 Operational States eoe edees tesa teu ode ud ce eure seost oiran rohs E dul eo hu Rasa ubere uei spn Ua en Eus E UE eie UE 5 1 POS VUE TP rp M CREER 5 6 TACOS WIC SINAC IUD bos aos hesterna aint ludos is detested a Melt dc o o be toc pr EU eee 5 16 CS TONE LOE M CU hast cs ecstatic N Ede etee 5 19 SOP MIO oe N 5 45 SS WLC TE O esc M vosviucveceveceneesteseesunical niet 5 46 MONO A iecit buie eve ds dM EIN 5 51 NIOHHOEIDOURGSUILO era d nml vitat E M Mii 5 55 Out OF SEVICE 055i ae ien aet indeed sir a octane 5 62 Battery Mains Supply Indicator eee reet reor io eee ES E eov y eek Ue Yee o FUSE E Sea ru Yee Rea v Ev pep reve prec EE UNE ve 5 64 SWOT Bsa crass sa Ea a dinde iu 5 64 Technical Description Physics 6 1 Performance C haraeterlIstles sussoun FE Y eL E F uo Ue LEVE EET E Lgs 6 1 ProductioN eoe etui Re ee era ne Aca D ARD AM ee Se eer an 6 1 Spala L RESPONSE Ax ate ate ate ces sea ie p a tel dtes tu ue pl ois Lote t ettet fuot 6 2 Explanation of the Operational Calculations e eee eee eee eee eee eee ee eee eee ee ee eaae eoe 6 2 IHEEOQUC hon cont cmn ULL KL MILI MI LE AE E 6 2 Description of Parameters Used in Calculations
166. timum 9 4 Operating Voltage Calibration Source Activity Performing the HV Scan SAM12 User Manual Issue 1 0 The SAM12 is designed to detect activities down to release levels and otherwise as low reasonably achievable However the SAM12 is also very linear in response so a wide range of source activities may be used for set up and calibration Depending upon energy detector efficiency source activity should ideally be in the 100 nCi 3 7 kBq to 11 wCi 400 kBq range and in any case not more than 20 uCi 740 kBq Long count times will be required for small sources to maintain statistical accuracy against adverse background influences The calibration of the SAMI2 to Co when CCM is installed requires a longer counting time than would be required 1f CCM was not installed The reason being that CCM mode has a lower efficiency than the standard gross counting mode typically 1 for a 6 detector instrument Therefore it 1s recommended that a Co source of activity in excess of 40 kBq be used to undertake the CCM calibration Note that the CCM calibration is undertaken at the same time as the standard Co calibration NOTE For all the measurements performed below the door s should be fully closed in order to minimise the effect of background fluctuations All counts read from the detectors are corrected to compensate for the amplifier dead time With the SAM12 and surrounding area free of sources enter
167. tion Along Depth of SAM Figure 7 Side Spatial Response SAMI2A 6C 1D 2L 6 16 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific 96 Efficiency Technical Description Physics SAM12 One Door Six Detectors 2 0 Lead Copper Absorber Steel Liner Variation in Efficiency Along Centre Axis Front to Back 1 2 3 4 5 6 7 8 9 PHOTOMULTIPLIERS Position of 60Co Source Figure 6 Variation along Central Axis Front to Back SAMI2A 6C 1D 2L 96 Efficiency SAM12 One Door Six Detectors 2 0 Lead Copper Absorber Steel Liner Variation in Efficiency Along Centre Axis Bottom to Top 1 2 3 4 5 6 7 Position of 60Co Source Figure 9 Variation along Central Axis Bottom to Top SAMI2A 6C I1D 2L SAM12 User Manual 6 17 Technical Description Physics 6 18 SAM12 User Manual Issue 1 0 SAM12 One Door Six Detectors 2 0 Lead Copper Absorber Steel Liner Variation in Efficiency Along Centre Axis Left to Right 96 Efficiency EN eo 1 2 3 4 5 6 7 Position of 60Co Source Figure 10 Variation along Central Axis Left to Right SAMI2A 6C 1D 2L Thermo Fisher Scientific Issue 1 0 Technical Description Circuitry Chapter Technical Description Circuitry ETX Processor Thermo Fisher Scientific Description page 2 1 provides a general background to the following description and should be read before proceeding Introduction This section deals with the operatio
168. top 0 73 6 100 5 34 SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Operating Instructions This report lists Calibration History for the SAMI2 It is Calibration History Report m possible to limit the report by Start and End Date and Full Cal Please note that the report below is an example and does not display all the detector information Calibration Efficiencies Calibration ID 14 Calibration Date OF A200 12 11 49 Confidence 200 Accuracy 1 00 Full Calibration test TSB Threshold Activity Efficiency Gross Sum 489 42 0 80 51 0 00 0 00 uU B Lob BR 5 30 0 14 0 08 0 00 0 00 LU E C EB 5 23 0 18 0 11 000 0 00 mm S GC hI 5 72 0 18 u 11 aux 0 00 Ll ER Cub RD Page 1 Of 1 Thermo Fisher Scientific SAM12 User Manual 5 35 Operating Instructions 5 36 Events Report HV Scan Report SAM12 User Manual Issue 1 0 This report lists the Event History details between the selected Start and End dates It 1s possible to limit the report by Start and End Date Event History Event Time Description 6 3 2007 2 42 57 PM Instrument Options Changed 6 5 2007 2 28 05 PM 6 5 2007 11 39 12 AM 6 5 2007 11 38 23 AM 6 5 2007 11 38 19 AM 6 5 2007 11 34 56 AM 6 5 2007 11 34 46 AM 6 5 2007 11 27 25 AM 6 5 2007 11 21 58 AM 6 5 2007 11 21 45 AM 6 5 2007 11 20 03 AM 6 5 2007 11 08 55 AM 6 5 2007 11 05 36 AM Active Calibration Changed Instrument Parameter
169. ttings button to save these values NOTE The Back button must be pressed in order to access the other functions NOTE The following procedure tends to be iterative 1n nature and included as a guide only Different operational requirements and background conditions may necessitate a different choice of operating point The final choice should be at the discretion of the senior Health Physicist The Objectives are to SAM12 User Manual 9 5 Setting Up Procedure 9 6 SAM12 User Manual Issue 1 0 e Obtain consistent detector efficiencies particularly between opposite pairs and e Obtain good overall system efficiency and e Obtain low average background count and minimal spread between detectors When the graphs are displayed select the Gross Counting option and then press the respective graph for a detector which will expand it to fill the screen Pressing Table will show the actual FOM and S B values note that S B is proportional to FOM and is included for those users who prefer this quantity For mid and high energies an FOM peak is usually evident from the data Determine the maximum value of FOM for each detector as a starting point If no clear peak is visible or several peaks exist select a starting FOM value corresponding to a background value B similar to that of the other detectors Select the detector operating point as follows 1 The background count for each dete
170. tuieiiiiieni iate eiei Dione 10 1 E ipment REGU CO ecc a 10 1 Preparation for Calibration 2 oiii ooi coded endo doi oho E dto de Dido mc aiaa ide 2o lets 10 2 SellocuniuMee t 10 2 Calibration for Other Nuclides uiiiodiiiiei a iet a Eins Eie eio b Lp a ases i eva cabicoteiactadatias 10 3 Cahbranon DI o cS 10 4 TroublesBo0lng oos o eniti tnmen ei 10 4 If Background Values Vary by More Than 30 essen 10 4 If Nuclide Count Rate Outside Required Value cccceeeesessessssssesssesssssssssssssssssssaeas 10 4 Thermo Fisher Scientific SAM12 User Manual xi Contents Chapter 11 Chapter 12 Issue 1 0 Maintenance and Trouble Shooting 11 1 Fault Messa OOS eT M 11 1 PoWwersup SECOS ooh CE dede E SU M MM ELA CT UM LLL P PM D DM aU EIE 11 1 SIS MEUSE III TR 11 1 Device Emor MOSSdPES udo muertes etum ELM LU EE M MU MEL 11 2 Operational Selb Tesla cuerda tpa monta enu MM tectam em utet DU deen oes 11 2 Servicing of the Electronics Chassis Type 56894 eee e e eerte ee e eee eee esee eee e eoo 11 3 Removal the Op COVE cecus UR RM uu Eten mU Iu cru E ME USE 11 3 Removal of the Electronics Chassis from the Main Frame esses 11 3 Removal and Replacement of the Power Supply eeeeeeeeeeeseeeeeee 11 4 Bat
171. u btimedxu n ni qu ME 11 19 SDalr eS DISU ien En SER RENE AE EERARUASKERINSRE SERERE AR AEEA SAE EET 12 1 Recommended Spares eM 12 1 DALES dr aa O 12 2 Drawings List by Assembly 2 dec cks es e eee pasa ond an Leo eH apa aaa Yee aa sue so opa opa aee e CR a Saa RN eaa dana eov N UR ae CER auae 12 3 Drawings List Letter and Numerical Order ccce eee eee ee eee eee reete teen eee e eene eate 12 4 PYevc Dua Pee T 12 4 xii SAM12 User Manual Thermo Fisher Scientific Issue 1 0 Thermo Fisher Scientific Tables Table 1 Standard SAMI2 Standard Stainless Steel Liners Table 2 Low Variant SAMI2 Energy Variants Table 3 Probability Sigma and 96 Table 4 Summary of the Controller Board Inputs SAM12 User Manual Tables xiii Figures Issue 1 0 Figures Figure 1 Front Spatial Response ccccccccccccccceccceceeeeeeeeeeeeeeeeeeeeeeeees 6 14 Figure 2 Side Spatial Response ssssssssseenneeenenennn 6 14 Figure 3 Efficiency variation along Central Axis Front to Back SAMI2A 219 p 3 crc 6 15 Figure 4 Efficiency Variation along Central Axis Bottom to Top ID CI n 6 15 Figure 5 Efficiency Variation along Central Axis Left to Right SAM12A A WN apse 6 15 Figure 6 Front Spatial Response SAMI2A 6C 1D 2L 6 16 Figure 7 Side Spatial Response SAMI2A 6C 1D 2L 6 16 Figure 8 Variation along Central
172. uire a Continuous count to be made tick the Continuous box 3 Press Start button Note that the Arbitrary field displays the pulses obtained by random coincidence from non Cobalt60 source Select Data Reports to selecta ES Database Report from a pre defined list Passe Select a Rape SAM12 User Manual 5 31 Operating Instructions 5 32 SAM12 User Manual Issue 1 0 To run a report select one from the list and press the Run Report button The types of Reports available are listed below Each report displays the following button bar Report Button Functions je gt Print Save BSE Stop Back Direction Arrows steps through the report pages Page Setup display the Report Page settings Report Page Settings Paper Size A4 210 x 297 mm l Paper Orientation Portrait Left Margin in o50 Right Margin in o50 Top Margin in Hoo R39 Bottom Margin in Enter the required settings and press OK The Print button sends the report to the printer The Save button displays the Drive selection window to allow you to select a Drive for the saved report The report will be saved as an Excel spreadsheet with the following name Report Type gt lt Y YMMDDHHMM gt xls e g ResultsSummary0612031151 xls Stop cancels the processing of the report Back returns the user to the previous screen Thermo Fisher Scientific Issue 1 0 Background Summary Report Thermo
173. uit without saving To create a new Calibration Mix highlight in an empty Calibration Mix window or an existing Calibration Mix to overwrite and click on the Create New Mix button Press in the Calibration field to create a new Calibration name In the Calibration Mix section use the drop down list to add a new Nuclide Press in the Percentage field to edit the percentage When complete press Apply Settings button to save or Cancel button to quit without saving To delete an existing Calibration Mix highlight the Calibration Mix for deletion and press the Delete Mix button HVScan SelectCalibrationHV Scanto SG Geel Ges view and create HV Scans Itis gem also possible to set HVs for a ate mn detector amplifiers The scean m i allows repeated counts at an paan increasing or decreasing HV to be recorded to ascertain detector operating point and efficiency To start a new HV Scan press Please enter scan Parameters the New HV Scan button to EHE m display the Please enter scan Maximum Vekage ERE vi Parameters window Step Size EE vas Step Duration ji i Seconds Continue Back Description of options Minimum Voltage Enter a minimum voltage Volts Maximum Voltage Enter a maximum voltage Volts Note that this value should at least be Minimum Voltage Step Size Step Size Volts Enter a step size for the scan Step Duration Enter the length in seconds for each step seconds Once the abo
174. um detectable depends on Response liner material Operating voltages should normally be set up using the NBR method although they may also be set up using the Figure of merit S B shown in figure 9 1 to yield the operating Photomultiplier voltages These settings are determined and set using the HV Scan feature Calibration HV Scan see HV Scan page 5 25 The recommended values based on the NBR optimization method can be found in the Calibration certificate for each individual instrument This can have all thresholds adjustable under software control Programmable Threshold 1 0 4095mV in 1 mV steps Programmable Threshold 2 0 4095mV in 1 mV steps SAM12 User Manual 3 3 Specification 3 4 LCD Lamps Charging LED SAM12 User Manual Issue 1 0 Programmable Threshold 3 0 4095mV in 1 mV steps Programmable Threshold 4 0 4095mV in 1 mV steps Programmable Threshold 5 0 4095mV in 1 mV steps Control Instrument ON OFF operation 1s via a momentary key switch on the side panel Operating any door activates a micro switch and suspends background monitoring Closing the door indicates a sample 1s ready to be monitored and initiates a time out period If the Start button 1s pressed within the time out period the article is monitored otherwise background monitoring 1s resumed Opening any door during monitoring aborts the measurement Optional door locks are available and will activate to prevent any contaminated ite
175. und Door Operations Thermo Fisher Scientific Operating Instructions monitoring can re commence the door needs to be opened and shut again In a two door SAM 12 if the back door is opened during Normal Background Monitoring the ILLEGAL DOOR SEQUENCE message is displayed To re establish Normal Background Monitoring the door s must be shut ILLEGAL DOOR SEQUENCE Please close both doors Qut Of anys See Doors page 5 13 for more information When a changing background has been detected or the instrument does not have a valid background e g at System Startup the system establishes a new background radiation measurement Each 10 second Background count for each detector 1s checked against user defined statistical limits for variance from the stored average for that channel If the count is acceptable it is incorporated into the stored average otherwise the stored average for all channels is discarded the blue Alarm lamp will light and Updating Background Please Wait message is displayed while a fresh 100 second Background is accumulated see Background Update page 6 5 for more information After every successful 10 second Background update period the minimum monitoring time required to give the required measurement certainty is automatically re calculated The calculated monitoring time is rounded up to the nearest second and used when monitoring articles If the calculated time 1s greater t
176. urce Figure 5 Efficiency variation along Central Axis Front to Back SAM12A 4C 2D IL SAM12 Type Test Data Four Detectors And 1 0 Lead Variation in Efficiency Along Centre Axis Bottom to Top Efficiency Co e 1 2 3 4 5 6 7 Position of Co Source Figure 4 Efficiency Variation along Central Axis Bottom to Top SAMI2A 4C 2D 1L SAM12 Type Test Data Four Detectors And 1 0 Lead Variation in Efficiency Along Centre Axis Left to Right 60 4A o 96 Efficiency Co eo 1 2 3 4 5 6 7 Position f Co Source Figure 5 Efficiency Variation along Central Axis Left to Right SAMI2A 4C 2D 1L Thermo Fisher Scientific SAM12 User Manual 6 15 Technical Description Physics Issue 1 0 SAM12 One Door Six Detectors 2 0 Lead Copper Absorber Steel Liner Efficiencies to 60Co As Viewed From Front Source 232 5 mm From Door CENTRE H7 H6 5 B 70 75 H5 B 65 70 2 H 60 65 z E 55 60 H4 9 o 50 55 O 45 50 c 9 p o H1 W1 W2 W3 WA W5 W6 W7 Position Along Width of SAM Figure 6 Front Spatial Response SAMI2A 6C 1D 2L SAM12 One Door Six Detectors 2 0 Lead Copper Absorber Steel Liner Efficiencies to 60Co As Viewed From Side Source 189 mm From LHS CENTRE B 70 75 B 65 70 m 60 65 m 55 60 B 50 55 O 45 50 FRONT 1 DOOR Position Across Height of SAM PHOTOMULTIPLIERS THIS END Posi
177. user definable See Messages page 5 15 for more information Please remove article At the end of the measurement sequence the stored total background count is subtracted from the total measured count to give the net count which is compared with the effective alarm level Note that the Uncertainty Value and Activity results are displayed CLEAR if enabled see Options page 5 6 for more information 556 Bq 30 Bq Please remove article Redya Thermo Fisher Scientific SAM12 User Manual 5 55 Operating Instructions 5 56 ALARM Result SAM12 User Manual Issue 1 0 Note that if the number of counts ED is less than Minimum Detectable CLEAR Activity see Information page 5 30 the Clear result will state that it is less than the MDA Result is less than MDA Please remove article wa A A After a CLEAR result the user is prompted to remove the measured article When the door is opened to retrieve the article the READY Deposit Article and Close Door message 1s displayed see Door Operations page 5 51 to start a new measurement CAUTION THE SAMI2 CANNOT DISTINGUISH BETWEEN A GRADUAL BUILD UP OF CONTAMINATION AND SMALL BACKGROUND CHANGES THEREFORE IT IS STRONGLY RECOMMENDED THAT A REGULAR FRISKING PROCEDURE IS ADOPTED AND OR AN INSPECTION OF THE BACKGROUND REPORT SHOULD INDICATE A BUILD UP OF ACTIVITY SEE Reports PAGE 5 31 If the measurement complet
178. user requires the alarm to be triggered It is equivalent to the Contamination Alarm Level set by the user modified by the system Efficiency Correction Factor E Effective Alarm Count rate cps is the effective net count rate at which the SAM normal alarm is triggered The Contamination Alarm Count rate is modified to take account of the monitoring time background statistical fluctuation and user programmed Probability of Detection This ensures the Alarm set point reflects the measurement certainty required The current Effective Alarm count rate may be viewed in Information page 5 16 The Ceffect calculation is detailed in Contamination Alarm page 6 8 Probability of False Alarm o is the probability that a false alarm does not occur during a measuring sequence The value of F in terms of sigma is set in Params 2 page 5 10 where the associated probability is shown alongside in parentheses The value is usually set as high as possible so that false alarms do not occur e g one false alarm in a hundred measurements is a probability of 99 2 4 C see Table 3 Probability Sigma and page 6 12 Probability of Detection o is the probability that exactly one Alarm Level of contamination will cause an alarm The value of P in terms of sigma is set in Params 2 page 5 10 where the associated probability is shown alongside in parenthesis The minimum allowable probability is 50 zero sigma Increasingly higher probabil
179. variable unit Background Update While the SAM12 is not occupied background is monitored in 10 second periods each measurement contributing to a rolling average produced over a fixed 100 second period 1 e 10 measurements Measurements subsequent to the 10 are added to the results store with the oldest being discarded In this way a mean background is stored and constantly updated for each of the four detectors These four mean values are summed to give an overall mean Background value for the whole system Changing Background In relatively stable background conditions 100 second rolling average accumulates an accurate background count It is however slow to respond to sudden background disturbance and drift making it 1s necessary to screen each count before incorporating it into the rolling average Consequently to guard against inaccurate measurements and false alarms the SAM reads and checks the counts from each detector every second A changing background conditions exists if either of the following conditions are true Any one detector count shows a Mo change from the stored average for that channel Bay Cal 2 MX Bw where Bay 1s the rolling average for any one detector C is the counts registered in the last one second background update Thermo Fisher Scientific SAM12 User Manual 6 5 Technical Description Physics 6 6 Calculation of the Monitoring Time Tai SAM12 User Manual Issue 1 0
180. ve scan parameters have been established two scans will be made against each amplifier threshold for all Thermo Fisher Scientific SAM12 User Manual 5 25 Operating Instructions 5 26 SAM12 User Manual Issue 1 0 amplifiers at each HV step over the specified integration period e A background HV Scan e A source HV Scan When the options have been Ready To Start Background Scan entered press Continue button to f Remove Source display Ready to Start Close Doors Background Scan window BEG Poss Siain Start Abort Remove any current Source from mmm the SAM12 close the doors and gems press the Start button A oy background HV scan will be performed recording the counts against each amplifier threshold for all amplifiers at each HV step over the specified integration period A progress window is displayed Once the Background Scan is Ready To Start Scan of Source completed the Ready to Start E nse ourca Scan of Source is displayed Close Doors and press Start Start Abort Insert the Source to be scanned mium ig into the SAMIZ close the doors gem and press the Start button A source HV scan will be performed recording the counts against each amplifier threshold for all amplifiers at each HV step over the specified integration period A progress window is displayed Once the Scan is completed a Save Scan button appears giving the option to save the scan or Abort the
181. w the battery to re connect as soon as its terminal voltage recovers slightly as a result of having the load removed from its terminals The user is signalled the pending shut down in order that any data can be saved A key switch is connected to the 5660A for manually switching the power ON OFF to the load The key switch performs two operations Primarily it allows the instrument to be switched ON if either the mains supply exists or the battery contains sufficient charge or both This is achieved by turning the key clockwise for at least 2 seconds Secondly the instrument can be switched OFF should the operating software fail to carry out the Shut down task by holding the key clockwise for at least 10 seconds FHT681 42543 0223 amp 42543 0224 For more information regarding the Scintillation HV and Amplifier Board see FHT681 Scintillation HV and Amplifier Type 42543 0223 page 2 3 For more information regarding the CCM Board see FHT68 Coincidence Detector Card Type 42543 0224 page 2 4 The Dual Channel Scintillation HV and Amplifier board provides the high voltages for two scintillation detectors It also receives charge pulses from two detectors amplifies them and discriminates between five energy levels Independent counter values five for each channel are generated every 100ms and stored in a 5 second buffer In addition to that 1s values are built from the 100ms values All these values can be polled from t
182. y supplied In the event of this part requiring replacement it must be replaced with a unit of identical type When re connecting the mains wiring ensure the mains inlet earth connection is made securely to the Central Earth Point CEP These requirements SAM12 User Manual 11 7 Maintenance and Trouble Shooting LCD Display Touch Screen Touch Controller amp Backlight Inverter Removal and Replacement Replacement of the LCD Display Touch Screen Touch Controller and Backlight Inverter Front Rear Panel LED s 11 8 Removal amp Replacement SAM12 User Manual Issue 1 0 are mandatory and necessary for continued EMC performance and user safety WARNING The Backlight Inverter generates dangerous high voltages Exercise caution when servicing always allow the HV to discharge before commencing work Do not remove the Inverter from its protective screening enclosure Refer to assembly drawing D92053 A for details Switch off the power Before attempting to remove the Display and Inverter ensure the SAMI2 is OFF Remove the ten allen screws from the rear of the display housing and gently pull the front bezel assembly away from the main housing and lay flat onto the top cover Take care not to strain the three cables attached If necessary pull through more cable to ease working on the assembly The controller and inverter cards are accessed by removing the protection covers on the rear of the Di
183. y OPEN DOOR TO MONITOR ARTICLES message 1s displayed The SAM12 is now ready to start monitoring articles OPEN DOOR TO MONITOR ARTICLES Reedy Chea If the front door is opened when the SAM12 is establishing a new sdbissabdad background background counting stops the Close Door To Resume message 1s displayed and an audible alarm will sound To continue with the process the door s must be shut Close Door To Resume If the back door 1s opened when the SAM12 is establishing a new background background counting stops the ILLEGAL DOOR SEQUENCE message is displayed and an audible alarm will sound To continue with the process the door must be shut See Doors page 5 13 for more information If the Residual Contamination Check before Background Check RAIA option 1s ticked see Options page 5 6 a Residual Contamination Count is performed before a new Normal Background Monitoring commences 5 SECONDS REMAIMING See Notes regarding Residual Contamination Check page 5 60 for more information If more than 15 minutes of continuous operation have elapsed since Normal Background Monitoring has commenced a warning message is displayed to advise the user that a Background Check is required WARNING Background Check requinid Please Remove all Items In order for the Background Check to be run before Thermo Fisher Scientific Issue 1 0 Notes regarding Changing Backgro
184. y 2 50mm models Additionally uneven compression of the rubber seal may make the door appear out of square or to sag Any manufacturing tolerances are allowed for and compensated by the hinge mounting and door catch adjustment during final door Mounting Assembly In built door catch adjustment of 14 6mm exists to accommodate any movement or wear that may take place see Door Catch and Lock Replacement and Adjustment page 11 10 Therefore a door which is or appears to be out of square is in no way an indication of manufacturing defect or mechanical failure If a door does not operate correctly consult Door Catch and Lock Replacement and Adjustment page 11 10 The mechanical installation is now complete After approximately the first two weeks or 2 000 operations check the door hinge and locking mechanisms for initial Thermo Fisher Scientific Issue 1 0 Battery State Electrical Installation Thermo Fisher Scientific Unpacking and Installation bedding in adjustments as described in Door Locking Mechanism if fitted page 8 1 Electrical Installation Before proceeding with the electrical installation ensure the SAMI2 has been mechanically installed as described in Mechanical Installation page 4 2 IMPORTANT ENSURE CORRECT ELECTRICAL SUPPLY AND MAINS CONNECTOR WIRING FOR YOUR MAINS SUPPLY SAMI2 is shipped with the lead acid battery discharged The SAMI2 is fitted with a 50 VA auto r

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