Mirion Technologies GEM-5 User manual

GEM-5
Gamma Exit
Contamination Monitor
MAN-GEM5 Rev.01 User’s Manual

Copyright 2017, Mirion Technologies (Canberra CA) Ltd.
All rights reserved.
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and text, is the property of Mirion Technologies (Canberra CA) Ltd. and is
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(Canberra CA) Ltd.
Mirion Technologies (Canberra CA) Ltd., West-50B Caldari Road,
Concord, ON, L4K 4N8, Tel: [phone], FAX: [phone]
http://www.canberra.com/
The information in this document describes the product as accurately as
possible, but is subject to change without notice.
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and partner in your country/area, please always contact this company for
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All other trademarks are the property of their respective owners.

Gem-5 User’s Manual i
Table of Contents
Preface................................................................................................. xi
1. Introduction .................................................................................... 1
Features...........................................................................................................................................3
Safety First......................................................................................................................................4
Electrical Safety.........................................................................................................................4
Over-current Protection......................................................................................................5
Grounding...........................................................................................................................5
Environmental............................................................................................................................5
Pollution Degree.................................................................................................................5
Overvoltage Category.........................................................................................................5
Ingress Protection...............................................................................................................5
2. Installation - First Use of System.................................................. 6
Recommended Storage Locations..................................................................................................6
Recommended In-Service Location ...............................................................................................6
Specific Storage Locations.............................................................................................................6
Unpacking.......................................................................................................................................6
Installation......................................................................................................................................7
Lead Ingot Bricks.......................................................................................................................7
Ramps.........................................................................................................................................9
Relocation.....................................................................................................................................10
Review of Hardware.....................................................................................................................10
Computer Box..........................................................................................................................10
Display Screen .........................................................................................................................11
Review of Detectors.................................................................................................................11
Electrical Connections .............................................................................................................12
AC Electrical Mains Connection......................................................................................12
Relay Connections............................................................................................................12
Input/Output (I/O) Connections...............................................................................................12
Preliminary Check-Out.................................................................................................................12
Model Selection and Configuration..............................................................................................15
Ctrl+F10 – Factory Setup Menu ..............................................................................................17
F1 – Model Selection........................................................................................................18
F2 – Operation Configuration...........................................................................................22
F3 – Badge Configuration ................................................................................................25
F4 – Access Configuration...............................................................................................28
F6 – Access Level Settings...............................................................................................37

ii Gem-5 User’s Manual
F7 – Dosimeter Reader Configuration............................................................................. 40
F9 – Database Settings..................................................................................................... 45
F10 – Methodology Configuration.................................................................................. 46
3. Principle of Operation.................................................................. 48
Normal Service............................................................................................................................ 49
BACKGROUND Initialization/Collection Mode ................................................................... 52
READY Mode......................................................................................................................... 53
POSITION Mode .................................................................................................................... 54
MONITOR Mode.................................................................................................................... 55
CLEAN Mode ......................................................................................................................... 58
CONTAMINATED Mode....................................................................................................... 59
OUT OF SERVICE Mode....................................................................................................... 62
Monitor Out of Service.................................................................................................... 63
High Background Out of Service..................................................................................... 64
Excessive Background Out of Service............................................................................. 65
Detector Contaminated Out of Service............................................................................ 65
Krypton Mode.............................................................................................................................. 66
Alarm Test ................................................................................................................................... 69
4. Unit Setup ..................................................................................... 72
F9 – Plateau Plot.......................................................................................................................... 74
HV Setting for Gamma Scintillation Detectors....................................................................... 78
F8 – Discriminator Plot................................................................................................................ 78
F1 – Optimize Gamma HV.......................................................................................................... 82
Calibration Requirements for Contamination Monitors .............................................................. 88
Why is Calibration Necessary? ............................................................................................... 88
Calibrate Process..................................................................................................................... 89
Factory Default Calibration..................................................................................................... 92
Shift + F3 - Calibration Settings.............................................................................................. 92
5. Parameters Definition .................................................................. 93
Service Menu............................................................................................................................... 93
F1 – Place In Normal Service...................................................................................................... 97
F1 – Place in Conditional Service................................................................................................ 99
F1 – Place in No Database Conditional Service.................................................................... 100
F1 – Place in Krypton Mode Service......................................................................................... 100
F2 – Test Menu.......................................................................................................................... 100
F3 – Setup Menu........................................................................................................................ 101
F1 – Common Values............................................................................................................ 103
F2 – Wait Timeouts............................................................................................................... 106
F3 – Detection Zones ............................................................................................................ 111

Gem-5 User’s Manual iii
F1 – Zone Configuration ................................................................................................113
F2 – (Zone) Settings.......................................................................................................116
F3 – Calibration.............................................................................................................121
Shift+F3 – Calibration Settings......................................................................................127
F5 – Group Settings........................................................................................................129
Shift+F5 – Global Settings.............................................................................................131
F7 – Alarm Test Settings................................................................................................133
F9 – Edit Calibration Source List...................................................................................137
F4 – Out of Service Causes....................................................................................................141
F5 – Configuration.................................................................................................................148
F6 – Operation Voice & Screen.............................................................................................151
F7 – Data Log ........................................................................................................................155
Alarm Test Data Log......................................................................................................162
Service Data Log............................................................................................................162
Events Data Log.............................................................................................................164
Background Trend Data Log..........................................................................................165
Contaminated Results Data Log.....................................................................................166
Clean & Contaminated Results Data Log.......................................................................167
Raw Background Data Log ............................................................................................167
Calibration Trend Log....................................................................................................168
Verification Test Trend Log...........................................................................................168
F8 – Printout...........................................................................................................................169
F9 – Data Transfer (Network) Setup......................................................................................174
F11 – (Operation) Instruction Menu ......................................................................................181
F1 – Ready Instructions..................................................................................................183
Shift+F1 – Background Instructions...............................................................................184
F2 – Position Instructions...............................................................................................185
F3 – Go Back Instructions..............................................................................................186
F4 – Clean Instructions...................................................................................................187
F5 – Contaminated Instructions......................................................................................188
F6 – Turn Instructions ....................................................................................................189
F7 – Out of Service Instructions.....................................................................................190
F8 – Messages Instructions.............................................................................................191
F10 – Banner(s) Instructions ..........................................................................................192
F11 – Alarm Test Instructions........................................................................................193
6. Diagnostics/Maintenance .......................................................... 194
Using Test Screens.....................................................................................................................194
F2 – Test Menu...........................................................................................................................196
F1 – Rate Meter......................................................................................................................197
F2 – HVPS Meter...................................................................................................................200
F3 – Counter Test...................................................................................................................201

iv Gem-5 User’s Manual
F4 – Amplifier Pulse Test...................................................................................................... 202
Specific Information for Bench Test Models only......................................................... 204
F6 – Sensor Board Tests........................................................................................................ 205
F7 – Timer Tests.................................................................................................................... 207
F10 – Detector Board ID....................................................................................................... 208
F11 – Carrier Board Tests ..................................................................................................... 209
F12 – Background Trend Graph............................................................................................ 212
Shift+F2 – Additional Test Menu.............................................................................................. 213
F2 – Optimize Self Shield Factors......................................................................................... 213
Procedure....................................................................................................................... 215
F3 – Test Auxiliary Sensor Board......................................................................................... 218
F7 – Barrier Exerciser ........................................................................................................... 219
F4 – Faults ................................................................................................................................. 221
Determining Faults................................................................................................................ 223
Failure to Return to Service................................................................................................... 225
General Information....................................................................................................... 225
Troubleshooting Guide .................................................................................................. 228
F8 – Maintenance Log............................................................................................................... 233
F9 – Recent Event Log.............................................................................................................. 234
7. Retrieving Information ............................................................... 236
F5 – Information Menu.............................................................................................................. 236
F1 – Monitor History............................................................................................................. 236
F2 – Service History.............................................................................................................. 239
F3 – Background History...................................................................................................... 242
F4 – Monitor Time vs. Bkg Rate........................................................................................... 246
Shift+F4 - Monitor Time vs. Bkg Time ................................................................................ 247
F5 – Monitor Time vs. Alarm Value..................................................................................... 249
F6 – Monitor Zone Status...................................................................................................... 250
F7 – System Status................................................................................................................ 252
F6 – Printout Menu.................................................................................................................... 253
F1 – Monitor History Printout............................................................................................... 255
F2 – Service History Printout................................................................................................ 256
F3 – Calibration Printout....................................................................................................... 257
F4 – Calibration Data Printout .............................................................................................. 258
F5 – Contamination Check Results Printout......................................................................... 259
F6 – Calibration Source List Printout.................................................................................... 265
F7 – All Setup Values Printout.............................................................................................. 267
F8 – Calibration Check Results Printout............................................................................... 268
A. Algorithms .................................................................................. 270
Probability Theory..................................................................................................................... 270

Gem-5 User’s Manual v
Counting Statistics......................................................................................................................270
Confidence Levels..................................................................................................................270
K Alpha - False Alarm Due to Background Rate...................................................................274
K Beta - Positive Alarm Due to Contamination.....................................................................275
K Delta - Change in Background Rate...................................................................................275
Background Rate ........................................................................................................................275
Background Rate Calculations...............................................................................................275
Background Variance Ratio...................................................................................................277
Background Rate Reset..........................................................................................................278
High Background Rate Settings and Strategy........................................................................279
Low Background Rate Setting and Strategy..........................................................................282
Measurement Variance Ratio Setting and Strategy (Background Change Tracking)............284
Alarm Settings and Strategy.......................................................................................................285
Alarm Trip Points...................................................................................................................286
Counting Time Strategy.........................................................................................................289
Background FALSE Alarm Rate (FAR)................................................................................290
Confidence of Alarm..............................................................................................................291
Efficiency Calculation (and Derived Efficiencies).....................................................................291
B. Operating Files and Directory Structure .................................. 294
Basic Structure............................................................................................................................294
Custom Files...............................................................................................................................295
Driver Files.................................................................................................................................297
SetupTXT Files ..........................................................................................................................297
Settings Files ..............................................................................................................................297
Setup Menu............................................................................................................................297
Test Menu ..............................................................................................................................299
Additional Test Menu ............................................................................................................300
Factory Setup Menu...............................................................................................................301
History Files ...............................................................................................................................301
Temporary Files..........................................................................................................................302
Viewing Datalog Files with Excel..............................................................................................303
Sound Files.................................................................................................................................304
Voice Files..................................................................................................................................304
Creating Wave Files...................................................................................................................307
C. Special Information.................................................................... 309
Alarm Test vs. Occupant Alarm.................................................................................................309
Case 1.....................................................................................................................................309
Case 2.....................................................................................................................................310
Initial Setup............................................................................................................................310
Self Shielding.........................................................................................................................310

vi Gem-5 User’s Manual
F7 – Demonstration Display Menu............................................................................................ 311
F1 – Ready............................................................................................................................. 312
Shift+F1 – Background......................................................................................................... 312
F2 – Position.......................................................................................................................... 312
F3 – Count Down.................................................................................................................. 312
F4 – Clean ............................................................................................................................. 312
F5 – Contaminated ................................................................................................................ 312
F6 – Turn............................................................................................................................... 312
F7 – Out of Service ............................................................................................................... 313
F8 – Messages....................................................................................................................... 313
F10 – Cold Side..................................................................................................................... 313
F11 – Alarm Test................................................................................................................... 313
Demonstration Mode ................................................................................................................. 313
Simulator Mode ......................................................................................................................... 316
D. Isotope Library ........................................................................... 317
E. Further Information.................................................................... 318
Numeric Notation ...................................................................................................................... 318
Special Character Codes............................................................................................................ 319
Support for Non-US Keyboards................................................................................................. 320
F. Specifications – Standard Models ............................................ 323
Operating Modes........................................................................................................................ 324
Alarms........................................................................................................................................ 324
Parameter Setting....................................................................................................................... 324
Occupant Specifications ............................................................................................................ 325
Height of Occupant........................................................................................................ 325
Weight of Occupant....................................................................................................... 325
Radiological............................................................................................................................... 325
Radiation Detected................................................................................................................ 325
Typical Efficiencies............................................................................................................... 325
Detector Types ...................................................................................................................... 326
Mechanical................................................................................................................................. 326
Handling................................................................................................................................ 326
Cabinet................................................................................................................................... 326
Dimensions............................................................................................................................ 326
Weights.................................................................................................................................. 326
Electronics ................................................................................................................................. 326
Computer............................................................................................................................... 326
Display Screen....................................................................................................................... 327
Environmental............................................................................................................................ 327
Pollution Degree.................................................................................................................... 327

Gem-5 User’s Manual vii
Temperature...........................................................................................................................327
Relative Humidity..................................................................................................................327
Power Requirements ..............................................................................................................327
Power Consumption...............................................................................................................327
Sensors........................................................................................................................................328
Detector Numbers and Positions ................................................................................................328
G. Specifications – Options ........................................................... 329
(ID) Card Reader Options...........................................................................................................329
Magnetic Card Reader............................................................................................................330
Barcode Card Reader .............................................................................................................330
HID Compatible Proximity Card Reader...............................................................................330
CRemote Option (SCN 7062263)...............................................................................................330
Local Database Support Option..................................................................................................330
Models............................................................................................................................331
Source Calibration Fixture Options .......................................................................................332
Access Control Options..........................................................................................................332
Exit Control....................................................................................................................333
Barrier Arms...................................................................................................................333
Doors ..............................................................................................................................334
IPCAM212 Camera................................................................................................................334
Entrance/Exit Ramps..............................................................................................................335
2nd Layer of Lead Kit For Sides.............................................................................................335
Lead Kit For Top....................................................................................................................335
Lead Kit For Bottom..............................................................................................................335
H. Component Details – Standard Models .................................... 336
General Description....................................................................................................................336
Detectors.....................................................................................................................................337
Gamma Scintillation Detectors ..............................................................................................337
Computer Box (SCN 7079642)..................................................................................................337
Carrier Board (SCN 7078120)....................................................................................................337
Detector Boards..........................................................................................................................339
Board Settings........................................................................................................................340
Gamma Detector Board (SCN 816112).................................................................................342
Gamma Detector Digital Board (SCN 816102)..............................................................342
Gamma Detector Analog Board (SCN 816107).............................................................343
Sensor Boards.............................................................................................................................344
Four-Relay Sensor Board (SCN 816540)...............................................................................344
Serial Bus Terminator Board (SCN 816546)..............................................................................349
Sensors........................................................................................................................................349
Approach Sensor....................................................................................................................350

viii Gem-5 User’s Manual
Occupied Sensor.................................................................................................................... 350
Body-In Sensors .................................................................................................................... 351
I. Component Details – Options ................................................... 352
Other Optional Boards............................................................................................................... 352
Auxiliary Sensor Board (SCN 816696)................................................................................. 352
J. Routine & Preventative Maintenance – Standard Models ....... 356
Routine and Preventive Maintenance ........................................................................................ 356
Cleaning................................................................................................................................. 356
Decontamination ................................................................................................................... 357
Testing for Alarms................................................................................................................. 358
Repair of Detectors.................................................................................................................... 358
Replacing a Damaged Detector............................................................................................. 359
Scintillation Detectors.................................................................................................... 360
Replacing a Damaged Photomultiplier Tube......................................................................... 363
Sensor Setup .............................................................................................................................. 364
Motion Sensor ....................................................................................................................... 364
Photoelectric Sensors ............................................................................................................ 365
Through-Beam Infrared Photo Sensor........................................................................... 365
Background Suppression Infrared Photo Sensor ........................................................... 366
Computer Box............................................................................................................................ 367
Computer Windows 7 (or XP) Embedded Operating System............................................... 368
Solid State Drive Maintenance.............................................................................................. 369
Reinstalling or Updating Monitor Software.......................................................................... 370
Updating Monitor Software........................................................................................... 370
Reinstalling Monitor Software....................................................................................... 370
Reinstalling or Updating Windows 7 Image......................................................................... 370
BIOS Setup............................................................................................................................ 370
SOM 4463/4463N (SCN 7071914) BIOS Setup Procedure.......................................... 370
K. Preventative Maintenance – Options ........................................ 371
Barrier Arms Option.................................................................................................................. 371
Installation............................................................................................................................. 371
Adjustment/Maintenance....................................................................................................... 371
DC Motor Controller for Access Control Options..................................................................... 371
Inputs and Outputs................................................................................................................. 372
Switches................................................................................................................................. 373
Overview........................................................................................................................ 373
LED Functionality ......................................................................................................... 374
Operation............................................................................................................................... 374
Overview........................................................................................................................ 374