Thermo Scientific SAM12 User manual

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: [phone] Fax: [phone]

This manual was produced using ComponentOne Doc-To-Help™.

Thermo Fisher Scientific SAM12 User Manual iii
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.

iv SAM12 User Manual Thermo Fisher Scientific
WARRANTY AND LIABILITY
THERMO FISHER SCIENTIFIC reserves the right 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 lst 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.

Thermo Fisher Scientific SAM12 User Manual v
WARNING
When monitoring articles, operational procedures should contain warnings
regarding inappropriate articles.
These items may include:
xArticles containing liquids
xArticles with significant shielding
xArticles containing large magnets
xArticles 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.

vi SAM12 User Manual Thermo Fisher Scientific
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 removing 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.

Thermo Fisher Scientific SAM12 User Manual vii
WEEE COMPLIANCE:
This product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is
marked with the following symbol:
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 Fisher’s
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

Issue: 1.0 Contents
Thermo Fisher Scientific SAM12 User Manual ix
Contents
Manual Revision History...........................................................................................................1-15
Foreword...........................................................................................................................................i
Chapter 1 Introduction...........................................................................................1-3
Small Articles Monitor ................................................................................................................1-3
Chapter 2 Description............................................................................................2-1
Main Frame Type 5568A.............................................................................................................2-1
Scintillation Detector Type 5569A..............................................................................................2-1
Electronics Chassis Type 5689A.................................................................................................2-1
Controller Board Type 5670A (5671A)......................................................................................2-2
DC-DC Converter Board Type 5675A.......................................................................................2-3
Battery Controller Board Type 5660A.......................................................................................2-3
FHT681 Scintillation HV and Amplifier Type 42543-0223......................................................2-3
FHT681 Coincidence Detector Card Type 42543-0224 ............................................................2-4
Visual Indicator LED PCB Type 5672A....................................................................................2-4
Chapter 3 Specification .........................................................................................3-1
Operational Parameters..............................................................................................................3-2
Software Options..........................................................................................................................3-2
Vault Options ...............................................................................................................................3-2
Default Messages..........................................................................................................................3-2
Background Capability................................................................................................................3-2
Detectors.......................................................................................................................................3-3
Four or Six Detectors..........................................................................................................3-3
Detector HV settings...........................................................................................................3-3
Energy Window..................................................................................................................3-3
Control..........................................................................................................................................3-4
Displays.........................................................................................................................................3-4
LCD ....................................................................................................................................3-4
Lamps .................................................................................................................................3-4
Charging LED.....................................................................................................................3-4
Audible Indications......................................................................................................................3-4
Network Communications...........................................................................................................3-5
USB Ports......................................................................................................................................3-5
Printers .........................................................................................................................................3-5
Power Requirements....................................................................................................................3-5
Battery Backup.............................................................................................................................3-5
Dimensions....................................................................................................................................3-5
Overall Dimensions - 5568A + 5689A ...............................................................................3-5
Dimensions of Measuring Volume .....................................................................................3-6
Weight - with 1" (25 mm) of lead shielding, 4 detectors and one door ..............................3-6
Weight - with 2" (50 mm) of lead shielding, 6 detectors and two doors ............................3-6
Environmental..............................................................................................................................3-6
Temperature and Humidity.................................................................................................3-6
Magnetic Shielding.............................................................................................................3-6
IP rating ..............................................................................................................................3-7
Environmental restrictions..................................................................................................3-7

Contents Issue: 1.0
x SAM12 User Manual Thermo Fisher Scientific
Chapter 4 Unpacking and Installation..................................................................4-1
Unpacking.....................................................................................................................................4-1
Mechanical Installation ...............................................................................................................4-2
Positioning and Mounting the SAM12 ...............................................................................4-2
Removing Door Transit Supports .......................................................................................4-3
Fitting the Door Handle(s)..................................................................................................4-4
Door Operation ...................................................................................................................4-4
Electrical Installation...................................................................................................................4-5
Battery State .......................................................................................................................4-5
Electrical Installation ..........................................................................................................4-5
Printer Installation.......................................................................................................................4-6
Notes on Orientation and Positioning.........................................................................................4-6
Chapter 5 Operating Instructions .........................................................................5-1
Operational States........................................................................................................................5-1
Setup Menu.........................................................................................................................5-6
Diagnostics Menu .............................................................................................................5-16
Calibration Menu..............................................................................................................5-19
User Mode...................................................................................................................................5-45
Switch On....................................................................................................................................5-46
Monitoring..................................................................................................................................5-51
Monitoring Result......................................................................................................................5-55
Out Of Service............................................................................................................................5-62
Battery/Mains Supply Indicator...............................................................................................5-64
Switch Off...................................................................................................................................5-64
Chapter 6 Technical Description - Physics..........................................................6-1
Performance Characteristics.......................................................................................................6-1
Introduction ........................................................................................................................6-1
Spatial Response.................................................................................................................6-2
Explanation of the Operational Calculations ............................................................................6-2
Introduction ........................................................................................................................6-2
Description of Parameters Used in Calculations.................................................................6-2
Background Update ............................................................................................................6-5
Changing Background ........................................................................................................6-5
Calculation of the Monitoring Time (Tcal) ..........................................................................6-6
Minimum Detectable Activity (MDA) and High Background Criterion............................6-7
Changing Conditions ..........................................................................................................6-7
Contamination Alarm .........................................................................................................6-8
Calculation of Activity and Uncertainty .............................................................................6-8
Quickscan ...........................................................................................................................6-9
Natural Background Reduction (NBR)...............................................................................6-9
Cobalt Coincidence Monitoring (CCM) .............................................................................6-9
Residual Contamination Level............................................................................................6-9
Automatic Calculation of Calibration Monitoring Time ..................................................6-10
Isotope gamma efficiencies........................................................................................................6-10
SAM12A – Standard Stainless Steel Liners .....................................................................6-11
Low Energy Variants........................................................................................................6-11
Typical 60Co detection performance .................................................................................6-12
Probability – Sigma and % ...............................................................................................6-12
Chapter 7 Technical Description - Circuitry.........................................................7-1
Introduction..................................................................................................................................7-1
Controller Board - Type 5670A..................................................................................................7-1
ETX Processor....................................................................................................................7-1
PL30 Header for Non Volatile Memory (CF).....................................................................7-2
PL5 44 pin Primary IDE port for 2.5” disks .......................................................................7-2

Issue: 1.0 Contents
Thermo Fisher Scientific SAM12 User Manual xi
PL25 40 pin Primary IDE port for 3.5” disks .....................................................................7-2
PL4 40 pin Secondary IDE port for CD Roms ...................................................................7-2
IC9 Programmable I/O Device ...........................................................................................7-2
IC6 and IC8 Buffer .............................................................................................................7-2
IC1 Sound Amplifier ..........................................................................................................7-2
IC2 & IC3 USB power controllers......................................................................................7-3
IC5 LCD Power and Control ..............................................................................................7-3
IC4 EEPROM .....................................................................................................................7-3
Display facilities .................................................................................................................7-3
Inputs ..................................................................................................................................7-3
Outputs................................................................................................................................7-3
Battery Controller Board Type 5660A.......................................................................................7-3
Introduction ........................................................................................................................7-3
Keyswitch operation ...........................................................................................................7-4
FHT681 42543-0223 & 42543-0224.............................................................................................7-4
Scintillation HV & Amplifier .............................................................................................7-4
HV & Amplifier Connections.............................................................................................7-5
Coincidence detector ..........................................................................................................7-5
Coincidence Detector connections......................................................................................7-6
Mains Power Supply Module......................................................................................................7-6
LCD Display and Controller I/F & Backlight Inverter Module..............................................7-6
General Electromagnetic Compatibility (EMD) Considerations.............................................7-7
Chapter 8 Routine Checks.....................................................................................8-1
Mechanical Checks ......................................................................................................................8-1
Door Locking Mechanism (if fitted)...................................................................................8-1
SAM12 Mounting Arrangement.........................................................................................8-1
Other Mechanical Checks...................................................................................................8-1
Electrical Checks..........................................................................................................................8-2
Battery Charge state............................................................................................................8-2
Display Checks ...................................................................................................................8-2
EMC & Safety Earthing Checks.........................................................................................8-2
Periodic Source Checks...............................................................................................................8-2
Regular Source checks.................................................................................................................8-3
Cleaning Instructions...................................................................................................................8-3
Chapter 9 Setting Up Procedure...........................................................................9-1
Initial Setting Up for Use.............................................................................................................9-1
General................................................................................................................................9-1
Initialisation ........................................................................................................................9-1
Setting Passwords ...............................................................................................................9-1
Setting the Operational Parameters.....................................................................................9-2
Selection of Detector Operating Parameters .............................................................................9-3
Detector HV Selection........................................................................................................9-3
Derivation of the Optimum Operating Voltage ..................................................................9-4
Variance Testing ..........................................................................................................................9-7
Setting the NBR parameters ...............................................................................................9-8
Chapter 10 Calibration Procedure ........................................................................10-1
Calibration Validity...................................................................................................................10-1
Equipment Required..................................................................................................................10-1
Preparation for Calibration......................................................................................................10-2
Calibration..................................................................................................................................10-2
Calibration for Other Nuclides.................................................................................................10-3
Calibration mixes..............................................................................................................10-4
Troubleshooting .........................................................................................................................10-4
If Background Values Vary by More Than 30% ..............................................................10-4
If Nuclide Count-Rate Outside Required Value ...............................................................10-4

Contents Issue: 1.0
xii SAM12 User Manual Thermo Fisher Scientific
Chapter 11 Maintenance and Trouble Shooting..................................................11-1
Fault Messages ...........................................................................................................................11-1
Power-up Screens .............................................................................................................11-1
Self Test Screens...............................................................................................................11-1
Device Error Messages .....................................................................................................11-2
Operational Self Tests.......................................................................................................11-2
Servicing of the Electronics Chassis - Type 5689A .................................................................11-3
Removal of the Top Cover................................................................................................11-3
Removal of the Electronics Chassis from the Main Frame...............................................11-3
Removal and Replacement of the Power Supply..............................................................11-4
Battery - Removal and Replacement ................................................................................11-5
Battery Controller Board Type 5660A - Removal and Replacement ...............................11-5
Controller Board type 5670A - Removal and Replacement .............................................11-6
FHT681 cards - Removal and Replacement .....................................................................11-6
Removing & Replacing the Mains Inlet/Filter Assembly.................................................11-7
LCD Display, Touch Screen, Touch Controller & Backlight Inverter - Removal and
Replacement .....................................................................................................................11-8
Front/Rear Panel LED’s - Removal & Replacement .......................................................11-8
Start Switch, Keyswitch and Loudspeaker - Removal & Replacement............................11-9
Detector Removal and Replacement ........................................................................................11-9
Removal............................................................................................................................11-9
Detector Replacement.......................................................................................................11-9
Setting up Replacement Detectors for Use .......................................................................11-9
Door Lubrication .....................................................................................................................11-10
Door Catch and Lock Replacement and Adjustment...........................................................11-10
Replacement and Adjustment of (Chrome) Lever Catch................................................11-10
Replacement Door Stop Block .......................................................................................11-11
Trouble Shooting......................................................................................................................11-12
Normal Start-up (Boot-up) Operation.............................................................................11-12
Unit “dead” (will not boot up) & charging LED is OFF.................................................11-13
Unit “dead” (will not boot up) & charging LED is ON ..................................................11-13
Starts-up but Display is “Blank” & Fails Self Tests (no chimes) ...................................11-14
Will not run & displays “Out Of Service – Low Background Counts” ..........................11-14
Will Not Run & Displays “Out Of Service – High Background Conditions” ................11-15
Fails Lamp or LED Tests................................................................................................11-16
Fails Loudspeaker Test ...................................................................................................11-16
Fails the LCD Display Test ............................................................................................11-16
Display Backlight Failure ...............................................................................................11-17
Will Not Accept Valid Passwords ..................................................................................11-17
LCD Keypad Inoperative or Not Aligned.......................................................................11-17
Will not Enter Background Mode...................................................................................11-18
Locked in Background Mode .........................................................................................11-18
Locked in Measurement Mode .......................................................................................11-19
USB Output Data is Corrupted .......................................................................................11-19
Chapter 12 Spares List ..........................................................................................12-1
Recommended Spares List........................................................................................................12-1
Spares List..................................................................................................................................12-2
Drawings List (by Assembly) ....................................................................................................12-3
Drawings List (Letter and Numerical Order) .........................................................................12-4
Accessories List ..........................................................................................................................12-4

Issue: 1.0 Tables
Thermo Fisher Scientific SAM12 User Manual xiii
Tables
Table 1 Standard SAM12 Standard Stainless Steel Liners.......................6-11
Table 2 Low Variant SAM12 Energy Variants ........................................6-11
Table 3- Probability - Sigma and % .........................................................6-12
Table 4 - Summary of the Controller Board Inputs................................11-18

Figures Issue: 1.0
xiv SAM12 User Manual Thermo Fisher Scientific
Figures
Figure 1 - Front Spatial Response ............................................................6-14
Figure 2 - Side Spatial Response..............................................................6-14
Figure 3 - Efficiency variation along Central Axis (Front to Back) SAM12A
4C-2D-1L .................................................................................................6-15
Figure 4 - Efficiency Variation along Central Axis (Bottom to Top)
SAM12A 4C-2D-1L.................................................................................6-15
Figure 5 - Efficiency Variation along Central Axis (Left to Right) SAM12A
4C-2D-1L .................................................................................................6-15
Figure 6 - Front Spatial Response - SAM12A 6C-1D-2L ........................6-16
Figure 7 - Side Spatial Response - SAM12A 6C-1D-2L..........................6-16
Figure 8 - Variation along Central Axis (Front to Back) - SAM12A 6C-1D-
2L .............................................................................................................6-17
Figure 9 - Variation along Central Axis (Bottom to Top) - SAM12A 6C-1D-
2L .............................................................................................................6-17
Figure 10 - Variation along Central Axis (Left to Right) - SAM12A 6C-1D-
2L .............................................................................................................6-18
Figure 11 Statistical Limits of Counter Reliability.....................................9-9

Issue: 1.0 Manual Revision History
Thermo Fisher Scientific SAM12 User Manual xv
Manual Revision History
Issue Date Name Section(s) Revision
comments Approval
1.0
Draft
14.09.07 C Hills All Draft release of
SAM12 User
Manual for
review
M
Pottinger
1.0 21.09.07 C Hills All First release of
SAM12 User
Manual
C Ablett

Issue: 1.0 Foreword
Thermo Fisher Scientific SAM12 User Manual i
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 SAM12. 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
SAM12, 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 “THERMOFISHER” 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).