1. Manuals
  2. Brands
  3. Thermo Scientific Manuals
  4. Monitor
  5. SAM12
  6. Manual

Thermo Scientific SAM12 Manual

Small articles monitor
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
MANUAL- SAM12
SMALL ARTICLES MONITOR
Thermo Fisher Scientific
SAM12
21st September 2007

Advertisement

Table of Contents
loading

Related Manuals for Thermo Scientific SAM12

Summary of Contents for Thermo Scientific SAM12

  • Page 1 MANUAL- SAM12 SMALL ARTICLES MONITOR Thermo Fisher Scientific SAM12 21st September 2007...
  • Page 3 Thermo Fisher Scientific 2007 © ALL RIGHTS RESERVED. REPRODUCTION IN WHOLE OR IN PART OF ALL MATERIAL 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.
  • Page 4 This manual was produced using ComponentOne Doc-To-Help™.
  • Page 5 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...
  • Page 6 This SAM12 manual is a user guide and must be read in conjunction with the SAM12 Instruction Manual.
  • Page 7 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.
  • Page 8 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.
  • Page 9 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 RoHS Directive available www.thermofisher.com/WEEERoHS Thermo Fisher Scientific SAM12 User Manual...

  • Page 11: Table Of Contents

    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 Thermo Fisher Scientific SAM12 User Manual...
  • Page 12 Contents Issue: 1.0 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...
  • Page 13 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...
  • Page 14 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 SAM12 User Manual Thermo Fisher Scientific...
  • Page 15 Issue: 1.0 Tables 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 Thermo Fisher Scientific...
  • Page 16 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 SAM12 User Manual Thermo Fisher Scientific...

  • Page 17: Manual Revision History

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

  • Page 19: Foreword

    (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.

  • Page 21: Chapter 1 Introduction

    Introduction Chapter 1 Small Articles Monitor The Small Articles Monitors type SAM12 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...
  • Page 22 “Auto Recount” can be performed if the initial measurement produced an alarm condition. Two-door variants can be programmed to lock after alarms if required. The standard SAM12 can have the following options in any combination: Scintillation Counters (C)

  • Page 23: Chapter 2 Description

    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. Thermo Fisher Scientific SAM12 User Manual...

  • Page 24: Controller Board Type 5670A (5671A)

    • 1 x RS232 driver for LCD touch screen on PL22 • 1 x POWER connector PL13 • 1 x Loudspeaker connection for sound generator on Additionally a plug-in assembly, type 5671A, further extends serial communication to X-channel devices via the RS422 SAM12 User Manual Thermo Fisher Scientific...

  • Page 25: Dc-Dc Converter Board Type 5675A

    The HV has a range between 0 and 1400 Volts, with 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 Thermo Fisher Scientific SAM12 User Manual...

  • Page 26: Fht681 Coincidence Detector Card Type 42543-0224

    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. SAM12 User Manual Thermo Fisher Scientific...

  • Page 27: Chapter 3 Specification

    • 1 or 2 Doors (D) • 1 or 2 inches (25mm or 50mm) of lead shielding (L) Therefore, the SAM12 type nomenclature used to identify the build standard is in terms of nC, Nd & nL. The eight variants are: •...

  • Page 28: Operational Parameters

    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 is performed immediately after the current monitoring sequence. If no significant change is detected, the machine will be available for further monitoring.

  • Page 29: Detectors

    Issue: 1.0 Specification the SAM12 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...

  • Page 30: Control

    A pulsing white LED on the side panel indicating that the Charging LED mains is on and charging the battery. Audible Indications “Chime” Measurement with a “CLEAR” result “Single Beep” End of a parameter counting sequence. SAM12 User Manual Thermo Fisher Scientific...

  • Page 31: Network Communications

    Overall Dimensions - Width 29" (737 mm) approximately (max for 2-door versions 5568A + 5689A Depth 36.25" (921 mm) approximately including door handles, two door unit. 33.25" (844 mm) approximately including door handle, (6C-1D-2L) Thermo Fisher Scientific SAM12 User Manual...

  • Page 32: Dimensions Of Measuring Volume

    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.

  • Page 33: Ip Rating

    Issue: 1.0 Specification IP50 IP rating • Not for use in flammable or explosive atmospheres Environmental restrictions • For installation in “drip-free” locations only • Do not expose to excessive dust pollution levels Thermo Fisher Scientific SAM12 User Manual...

  • Page 35: Unpacking And Installation

    Issue: 1.0 Unpacking and Installation Unpacking and Installation Chapter 4 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...

  • Page 36: Mechanical Installation

    It may be necessary to remove any traces of adhesive with a suitable solvent cleaner. The SAM12 should be left on the base pallet until it is at the installation site in order to reduce the risk of damage during transportation.

  • Page 37: Removing Door Transit Supports

    A SAM12 mounting plinth is manufactured – associated equipment order code AE0181B. When using this plinth, the SAM12 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 mounting holes with suitable fixings.

  • Page 38: Fitting The Door Handle(S)

    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 Fitting the Door Handle(s) 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 –...

  • Page 39: Electrical Installation

    YOUR MAINS SUPPLY. SAM12 is shipped with the lead-acid battery discharged. Battery State The SAM12 is fitted with a 50 VA auto ranging power supply Electrical Installation 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.

  • Page 40: Printer Installation

    SAM with the USB cable supplied. Notes on Orientation and Positioning The large area detectors of the SAM12 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.

  • Page 41: Chapter 5 Operating Instructions

    User Mode (page 5-45) for further details. Administrator Mode Note that communications with the SAM12 is via a touchscreen and this manual 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 SAM12.
  • Page 42 When touching the screen in a date field, the following date Date Functions selection window appears: When touching the screen in a File Location field, the File Location Functions following Drive selection window appears: SAM12 User Manual Thermo Fisher Scientific...
  • Page 43 Note that changes made to fields are highlighted until applied or cancelled. Administration mode is entered by pressing on 'SAM12' in the Gaining Access to the bottom left-hand corner of the touchscreen when the SAM12 is Administration Mode in Background Checking mode.
  • Page 44 Press OK to re-display the Enter Admin Mode screen. Moving through the Menus To move through the menus, select the Main menu option on the left-hand side of the window to display the sub-menus SAM12 User Manual Thermo Fisher Scientific...
  • Page 45 5-30 √ Information 5-30 √ Diagnostics 5-31 √ Data Reports 5-31 √ √ Archives 5-40 √ √ System Actions 5-40 √ √ Setup 5-41 √ √ Version 5-42 √ √ Passwords 5-42 √ √ Thermo Fisher Scientific SAM12 User Manual...

  • Page 46: Setup Menu

    5-42 √ √ Interfaces 5-43 √ √ To exit Administration mode, press on 'SAM12' in the bottom Exiting the Administration left-hand corner of the touchscreen. Login to the Mode Administration mode – see Gaining Access to the Administration Mode (page 5-3).
  • Page 47 Note that it is not possible to tick Quick Scan and CCM Enabled at the same time. Default: OFF CCM Enabled 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.
  • Page 48 On Alarm – the Activity value will only be displayed if an alarm occurs On All – the Activity Result will be displayed for all results. Monitoring Result (page 5-55) for more information. Default: Never Params 1 SAM12 User Manual Thermo Fisher Scientific...
  • Page 49 Values: 0.1 to 7 sigma in 0.1 sigma steps Default: 7 σ Changing Conditions This is the length of time used by SAM12 to Period (s) determine if a changing measurement condition exists. Values: 2 to 30 s...
  • Page 50 This value is the probability that a false alarm will Alarm (σ) NOT be given during a measurement. This probability is used by SAM12 to determine the monitoring time and the Effective Alarm Level and Minimum Detectable Activity. For further information, see...
  • Page 51 This is 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...
  • Page 52 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...
  • Page 53 Issue: 1.0 Operating Instructions Default: 5000.0 dpm High Level Alarm This is the detected activity at which SAM12 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).
  • Page 54 - High (i.e. locks on High alarms only) - All Alarms (i.e. locks on all alarms) Default: Never The two door SAM12 is intended for “barrier” applications and Notes regarding Two-Door has optional door interlocking to ensure clearance integrity. It...
  • Page 55 HIGH ALARM LEVEL - Please call HP Alarm Clear 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 5-15...

  • Page 56: Diagnostics Menu

    MDA (default unit) Note that this is a view only field. The Minimum Detectable Activity (MDA) is a value derived by the SAM12 and is the smallest activity that can be statistically accurately detected with the current settings and background. The...
  • Page 57 Detectors|Gross Sum button. 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 require a Continuous count to be made, tick the Continuous box.
  • Page 58 Select Diagnostics|Vault to test Vault the Door and Locks 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: •...

  • Page 59: Calibration Menu

    This option allows the user to edit existing Calibration sources Cal Check 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...
  • Page 60 Use the pre-defined window to select a unit from one of the following: • dpm • Bq • kBq • pCi • nCi • μCi • mCi • Ci Comment Enter a Comment to describe the Source, if required. 5-20 SAM12 User Manual Thermo Fisher Scientific...
  • Page 61 Note that the Abort button can be pressed at any time during the process to return to the previous window. The SAM12 does a one second background measurement which is used in conjunction with the Calibration Accuracy value when calculating the time required for the source count.
  • Page 62 Operating Instructions Issue: 1.0 When the Background Measurement is complete, place the source in the SAM12 and press Start. The SAM12 performs a Flash Measurement to calculate the Calibration time. Note that the Calibration time is the sum of the Background and Source measurements.
  • Page 63 Issue: 1.0 Operating Instructions The SAM12 measures the background and the calculated count time decrements If the calculated efficiency has an illegal value (i.e. no net counts), the efficiency will be set to zero. If a result is calculated, the new calibration data is displayed.
  • Page 64 Then press Cal Check button to display the Ready to Start window. Remove all items from the SAM12 and press the Start button. Note that the Abort button can be pressed at any time during the process to return to the previous window.
  • Page 65 Enter a step size for the scan. Step Duration Enter the length (in seconds) for each step. (seconds) Once the above scan parameters have been established, two scans will be made against each amplifier threshold for all Thermo Fisher Scientific SAM12 User Manual 5-25...
  • Page 66 Continue button to display Ready to Start Background Scan window: Remove any current Source from the SAM12, close the doors and press the Start button. A background HV scan will be performed, recording the counts against each amplifier threshold...
  • Page 67 To view the HV Scan as a Graph, press the Graph button to display the scan results: To view the last saved HV Scan, press the Last HV Scan button to display the scan results: Thermo Fisher Scientific SAM12 User Manual 5-27...
  • Page 68 It measure the current being delivered to the Hv Generator. Select Calibration|Attenuation to Attenuation set a sequence to obtain Attenuation Factors (note that a Phantom object is required for this process): 5-28 SAM12 User Manual Thermo Fisher Scientific...
  • Page 69 To Calculate New Factors, press Calculate new Factors button to display the Ready to Start window: Remove all items from the SAM12 and press the Start button to commence measuring the empty vault. The SAM12 measures the Empty Vault and the calculated count time decrements.
  • Page 70 MDA (default units) Note that this is a view only field. The Minimum Detectable Activity (MDA) is a value derived by the SAM12 and is the smallest activity that can be statistically accurately detected with the current settings and background. The...
  • Page 71 SAM12: 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 require a Continuous count to be made, tick the Continuous box.
  • Page 72 Drive for the saved report. The report will be saved as an Excel spreadsheet with the following name: <Report Type><YYMMDDHHMM>.xls e.g. ResultsSummary0612031151.xls Stop cancels the processing of the report. Back returns the user to the previous screen. 5-32 SAM12 User Manual Thermo Fisher Scientific...
  • Page 73 Start and End Dates. It is possible to limit the report by Start and End Date. Press on one of the ID records to display the Background Measurement Detail for the selected Measurement ID: Thermo Fisher Scientific SAM12 User Manual 5-33...
  • Page 74 Operating Instructions Issue: 1.0 5-34 SAM12 User Manual Thermo Fisher Scientific...
  • Page 75 Issue: 1.0 Operating Instructions This report lists Calibration History for the SAM12. It is Calibration History Report 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.
  • Page 76 End dates. It is possible to limit the report by Start and End Date. Press on one of the ID records to display the HV Scan Detail for the selected Scan ID: 5-36 SAM12 User Manual Thermo Fisher Scientific...
  • Page 77 Issue: 1.0 Operating Instructions Please note that the report below is an example and does not display all the information. Thermo Fisher Scientific SAM12 User Manual 5-37...
  • Page 78 Operating Instructions Issue: 1.0 This report lists the current Instrument Configuration settings. Instrument Configuration Report 5-38 SAM12 User Manual Thermo Fisher Scientific...
  • Page 79 Results between the selected Start and End dates. It is possible to limit the report by Start and End Dates: 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...
  • Page 80 Location. Select the OK button to write the archives. A confirmation will be displayed. System Menu Select System|Actions to take Actions SAM12 out of Contamination Mode, quit the application or shutdown the system 5-40 SAM12 User Manual Thermo Fisher Scientific...
  • Page 81 To backup a Calibration, press the Backup Calibration button. A confirmation message will be displayed. Select OK to 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.
  • Page 82 User Level and levels below There are three levels of user – Health Physicist, Technician and ThermoFisher. The SAM12 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.
  • Page 83 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...
  • Page 84 This is the Serial Baud Rate for connection to the interface. Fallback Recovery This is 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...

  • Page 85: User Mode

    NORM – see Monitoring Result (page 5-55). • The user removes the article from the SAM12 - see Remove Articles (page 5-61). Thermo Fisher Scientific SAM12 User Manual...

  • Page 86: Switch On

    Operating Instructions Issue: 1.0 An example of the SAM12 screen is displayed below: User Screen The SAM12 user screen displays the following: • Headline 1 and 2, plus current status indicator Note that some of these messages are user-definable - Messages (page 5-15) •...
  • Page 87 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. Doors (page 5-13) for more information. Thermo Fisher Scientific SAM12 User Manual 5-47...
  • Page 88 5-8). To check the Calibration of the unit, Cal Check (page 5-19). Once the Self Checks have Establishing a new passed, SAM12 will to acquire a Background new background and the "Updating Background" message is displayed. Notes regarding Changing Background (page 5-51)
  • Page 89 Notes regarding High Background (page 5-62) for more information. When the SAM12 is not monitoring an article, background is Notes regarding Normal monitored in 10 second periods, each measurement Background Monitoring contributing to a “rolling average”, produced over a fixed 100 second period, i.e.
  • Page 90 ARTICLES" message is displayed. The SAM12 is now ready to start monitoring articles. If the front door is opened when the SAM12 is establishing a new background, background counting stops, the "Close Door To Resume" message is displayed and an audible alarm will sound.

  • Page 91: Monitoring

    Notes regarding High Background (page 5-62) for more information. Monitoring The SAM12 is available with a one or two door option. In a Door Operations two door SAM12, there is a front door and rear door. In a single door SAM12, only the front door is fitted. See...
  • Page 92 Note that when the door is opened, the background monitoring is suspended. Deposit the article to be monitored in the SAM12 and close the door. (Note that "Door Closed Waiting for Start" is displayed in the Operational Mode display bar).
  • Page 93 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 SAM12 returns to the "Ready – Open door to Monitor Articles" message. Notes regarding Normal Background Monitoring (page 5- for more information.
  • Page 94 Monitoring proceeds. If the START button is not pressed within the Measurement Start Timeout, the "Normal Background Monitoring" is resumed and SAM12 displays the "Ready – Open door to Monitor Articles" screen. If the background changes during Background Change during...

  • Page 95: Monitoring Result

    Note that the Uncertainty Value and Activity results are displayed if enabled – see Options (page 5- for more information. Thermo Fisher Scientific SAM12 User Manual 5-55...
  • Page 96 "READY – Deposit Article and Close Door" message is displayed – see Door Operations (page 5-51) to start a new measurement. CAUTION: THE SAM12 CANNOT DISTINGUISH BETWEEN A GRADUAL BUILD-UP OF CONTAMINATION AND SMALL BACKGROUND CHANGES. THEREFORE, IT IS STRONGLY RECOMMENDED THAT A REGULAR FRISKING...
  • Page 97 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. Doors (page 5-13) for more Thermo Fisher Scientific SAM12 User Manual 5-57...
  • Page 98 Administrator. Doors (page 5-13) for more information regarding Lock Front Door on Alarm. On a two-door SAM12, 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 Amplifier “dead-time”...
  • Page 99 Administrator. Doors (page 5-13) for more information regarding Lock Front Door on Alarm. On a two-door SAM12, 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 Alarm option is set to 'Never', the...
  • Page 100 If no contamination is found, the "Ready – OPEN DOOR TO MONITOR ARTICLES" message is displayed and the SAM12 reverts to Background mode. However, if residual contamination is detected or the count rate from any detector exceeds 95% of the Amplifier “dead-time”, then an Instrument...
  • Page 101 Start Up Checks (page 5-46). Remove Articles Two-door SAM12 In a two-door SAM12, 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).

  • Page 102: Out Of Service

    Operating Instructions 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 is displayed - see Door Operations (page 5-51). The SAM12 is now ready to monitor another article.
  • Page 103 • Raises the Normal Alarm level - see Alarms (page 5-12). Minimum Detectable Activity (MDA) and High Background Criterion (page 6-7) describes how the SAM12 decides if a high background condition exists. The "Out Of Service – Notes regarding Low Temporary Error has Occurred"...

  • Page 104: Battery/Mains Supply Indicator

    Battery Status including remaining battery life. This icon indicates that the SAM12 is running on mains supply. Switch Off Only an Administrator is able to exit the SAM12 application – see Actions. 5-64 SAM12 User Manual Thermo Fisher Scientific...

  • Page 105: Technical Description - Physics

    “worst case” monitoring time. Five user definable discriminator thresholds are available which allow the rejection of interfering high Thermo Fisher Scientific SAM12 User Manual...

  • Page 106: Spatial Response

    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. SAM12 User Manual Thermo Fisher Scientific...
  • Page 107 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). Thermo Fisher Scientific SAM12 User Manual...
  • Page 108 E is given by the contamination count rate in a given time and divided by the activity. E is determined by calibrating with a known radionuclide source, as detailed in Calibration for Other Nuclides (page 10-3). SAM12 User Manual Thermo Fisher Scientific...

  • Page 109: Background Update

    Detectable Activity (MDA) and High Background Criterion (page 6-7). Activity of Contamination (variable unit) While the SAM12 is not occupied, background is monitored in Background Update 10 second periods, each measurement contributing to a “rolling average”, produced over a fixed 100 second period: i.e. 10 measurements.

  • Page 110: Calculation Of The Monitoring Time

    ⎜ ⎜ ⎟ ⎟ ⎝ ⎠ In practice, the software solves this expression using a numerical substitution for T and iterative binary search technique. The value of T which provides the solution is then SAM12 User Manual Thermo Fisher Scientific...

  • Page 111: Changing Conditions

    Changing Conditions exist where the following formula is satisfied: − ≥ where is the rolling average count rate within the monitoring cycle, up to the point of the check. is the counts registered in the last time slice Thermo Fisher Scientific SAM12 User Manual...

  • Page 112: Contamination Alarm

    The uncertainty of the activity measurement is calculated as follows: ⎛ ⎞ ⎜ ⎜ ⎟ ⎟ conf gross ⎝ ⎠ where is the number of confidence levels. conf SAM12 User Manual Thermo Fisher Scientific...

  • Page 113: Quickscan

    After a measurement resulting in an Alarm condition, a Residual Contamination Residual Contamination Count (RCC) may be taken, if enabled Level on the Options sub-menu (see Options (page 5-6)). A count equal to the monitoring time (T ) is enforced. Thermo Fisher Scientific SAM12 User Manual...

  • Page 114: Automatic Calculation Of Calibration Monitoring 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 μR/h (0.07-0.1 μSv/h) Background using pant-sources in 6-10 SAM12 User Manual Thermo Fisher Scientific...

  • Page 115: Sam12A - Standard Stainless Steel Liners

    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 1 Standard SAM12 Standard Stainless Steel Liners SAM12A – Standard Stainless Steel Liners Total Co (1.2...

  • Page 116: Typical 60 Co Detection Performance

    Scientific on request. Table 3- Probability - Sigma and % Probability – Sigma and % Sigma Probability 50.00% 53.98% 57.93% 61.79% 65.54% 69.15% 72.57% 75.80% 78.81% 81.59% 84.13% 86.43% 88.49% 90.32% 91.92% 93.32% 94.52% 95.54% 6-12 SAM12 User Manual Thermo Fisher Scientific...
  • Page 117 99.989% 99.993% 99.995% 99.997% This probability refers to either the Probability of Detection or the Probability of NOT triggering a False Alarm. These Params 2 (page probabilities are calculated and displayed in 5-10) Thermo Fisher Scientific SAM12 User Manual 6-13...

  • Page 118: Figure 1 - Front Spatial Response

    Technical Description - Physics Issue: 1.0 Figure 1 - Front Spatial Response Figure 2 - Side Spatial Response 6-14 SAM12 User Manual Thermo Fisher Scientific...

  • Page 119: Figure 3 - Efficiency Variation Along Central Axis (Front To Back) Sam12A

    Issue: 1.0 Technical Description - Physics Figure 3 - Efficiency variation along Central Axis (Front to Back) SAM12A 4C-2D-1L SAM12 Type Test Data (Four Detectors And 1.0" Lead) Variation in Efficiency Along Centre Axis (Bottom to Top) Position of Co Source...

  • Page 120: Figure 6 - Front Spatial Response - Sam12A 6C-1D-2L

    Technical Description - Physics Issue: 1.0 Figure 6 - Front Spatial Response - SAM12A 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)

  • Page 121: Figure 8 - Variation Along Central Axis (Front To Back) - Sam12A 6C-1D

    Issue: 1.0 Technical Description - Physics SAM12: One Door, Six Detectors, 2.0" Lead, Copper Absorber, Steel Liner Variation in Efficiency Along Centre Axis (Front to Back) PHOTOMULTIPLIERS Position of 60Co Source Figure 8 - Variation along Central Axis (Front to Back) -...

  • Page 122: Figure 10 - Variation Along Central Axis (Left To Right) - Sam12A 6C-1D

    Technical Description - Physics Issue: 1.0 Figure 10 - Variation along Central Axis (Left to Right) - SAM12A 6C-1D-2L 6-18 SAM12 User Manual Thermo Fisher Scientific...

  • Page 123: Technical Description - Circuitry

    Introduction This section deals with the operation and function of all the major electronic assemblies which comprise the SAM12. Description of all assemblies is restricted to general operation and specification since detailed circuit operation may be the subject of design confidentiality.

  • Page 124: Pl30 Header For Non Volatile Memory (Cf)

    Data Terminal Ready Ready to Send Data Carrier Detected Clear to Send Data Set Ready IC1 provides for a loud-speaker drive on PL3 from the on IC1 Sound Amplifier board (ETX) sound signal generator. SAM12 User Manual Thermo Fisher Scientific...

  • Page 125: Display Facilities

    +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 Thermo Fisher Scientific SAM12 User Manual...

  • Page 126: Keyswitch Operation

    Current and voltage monitoring (IC100/101) and control circuitry (IC4) always ensure sufficient power is made available to power the SAM12 (even when the battery is 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.

  • Page 127: Coincidence Detector

    Signal Ground Used in conjunction with PCB 42543-0223, this assembly Coincidence detector allows measuring the coincidence counting rate of up to 6 detectors. The number of coincidences can be determined through setting the threshold no.1. Thermo Fisher Scientific SAM12 User Manual...

  • Page 128: Coincidence Detector Connections

    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. SAM12 User Manual Thermo Fisher Scientific...

  • Page 129: General Electromagnetic Compatibility (Emd) Considerations

    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. Thermo Fisher Scientific SAM12 User Manual...

  • Page 131: Routine Checks

    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 SAM12 with door locks, opening one door will lock the other. Alternatively the locks can be exercised individually (see...

  • Page 132: Electrical Checks

    During calibration, check the general condition of the battery. Battery Charge state To do this, turn the SAM12 key-switch on 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.

  • Page 133: Regular Source Checks

    Issue: 1.0 Routine Checks Should the results be outside these limits, the SAM12 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.

  • Page 135: Setting Up Procedure

    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...

  • Page 136: Setting The Operational Parameters

    Probability of Detection Probability of False Alarm Minimum Monitoring Time Maximum Monitoring Time Measurement Confidence Quick Scan Period Set-Up|Params 2 (page 5-10) for more information. Set-Up/Alarms Calibration stream Normal Alarm Set-Up|Alarms (page 5-12) for more information. SAM12 User Manual Thermo Fisher Scientific...

  • Page 137: Selection Of Detector Operating Parameters

    The SAM12 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.

  • Page 138: Derivation Of The Optimum Operating Voltage

    ‘as low reasonably achievable’. However, Operating Voltage 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 μCi (400 kBq)
  • Page 139 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: Thermo Fisher Scientific SAM12 User Manual...
  • Page 140 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: SAM12 User Manual Thermo Fisher Scientific...

  • Page 141: Variance Testing

    Gaussian distribution. This is equivalent to a Chi-squared test. Variance Test (page 5-17) for further information regarding how to set up the variance test. The variance test result is the Thermo Fisher Scientific SAM12 User Manual...

  • Page 142: Setting The Nbr Parameters

    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. SAM12 User Manual Thermo Fisher Scientific...

  • Page 143: Figure 11 Statistical Limits Of Counter Reliability

    Issue: 1.0 Setting Up Procedure Figure 11 Statistical Limits of Counter Reliability Thermo Fisher Scientific SAM12 User Manual...

  • Page 145: Chapter 10 Calibration Procedure

    The SAM is designed to detect activities down to release levels, as well as quantify significantly larger activities, up to in excess of 130 μCi (5 MBq). Thermo Fisher Scientific SAM12 User Manual 10-1...

  • Page 146: Preparation For Calibration

    The SAM12 is then ready for calibration. Calibration Ensure the background is stable, the door is closed and any calibration sources are well away from the SAM12 (at least 8 feet). 1. Ensure the door is shut and the unit is on and ready.

  • Page 147: Calibration For Other Nuclides

    (36-40) (34-38) Specification (page 3-1) for more information regarding the various SAM12 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.

  • Page 148: Calibration Mixes

    It is not essential that the percentage of all the nuclides entered adds up to 100 %. In this situation, the SAM12 will assume the unidentified percentage is due to undetectable nuclides, such as Fe, and adjust the overall percentage efficiency to the mix appropriately.

  • Page 149: Chapter 11 Maintenance And Trouble Shooting

    “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 SAM12 User screen will be displayed. The application is entered with tests to verify the detection Self Test Screens components are working correctly.

  • Page 150: Device Error Messages

    10. X-Channel Failure Accessing Node {0}, ID {1} If one of these messages occurs, a fault with a peripheral device Device Error Messages is indicated. Normal operation of the SAM12 can be continued when action has been taken to rectify or circumvent the problem.

  • Page 151: Servicing Of The Electronics Chassis - Type 5689A

    Removal of the Electronics Electronics Chassis, it may be advantageous to remove it from Chassis from the Main the SAM12. The chassis is quickly and easily removed from Frame the main frame as follows and since the assembly is complete, stand-alone testing is also possible.

  • Page 152: Removal And Replacement Of The Power Supply

    THAT THE MAINS SUPPLY IS DISCONNECTED FROM THE SAM12 AND THE SAM12 IS POWERED OFF. The mains power supply for the SAM12 is mounted at the rear of the electronics chassis on the left hand side. Having first disconnected the mains supply and removed the...

  • Page 153: Battery Controller Board Type 5660A - Removal And Replacement

    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 SAM12 and remove the top cover as described in Removal of the Top Cover (page 11- 3).

  • Page 154: Controller Board Type 5670A - Removal And Replacement

    Maintenance and Trouble Shooting Issue: 1.0 Switch off the power, power down the SAM12 and remove the Controller Board type top cover as described in Removal of the Top Cover (page 11- 5670A - Removal and 3). The 5670A Controller board is situated in the front centre Replacement of the Electronics Chassis, adjacent with the loudspeaker.

  • Page 155: Removing & Replacing The Mains Inlet/Filter Assembly

    • HV and Amplifier for detectors FRONT & BACK Amp 3 Before attempting to remove any FHT681 board, switch the SAM12 OFF and wait 1 minute for the HV to discharge before beginning work. The board mountings are identical. To remove any PCB, first...

  • Page 156: Lcd Display, Touch Screen, Touch Controller & Backlight Inverter - Removal And Replacement

    Refer to assembly drawing D92053/A for details. Switch off the power .Before attempting to remove the Display and Inverter, ensure the SAM12 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.

  • Page 157: Start Switch, Keyswitch And Loudspeaker - Removal & Replacement

    Removal & Replacement component details. WARNING: Unplug the mains lead and disconnect the battery to avoid the SAM12 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.

  • Page 158: Door Lubrication

    (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. 11-10 SAM12 User Manual Thermo Fisher Scientific...

  • Page 159: Replacement Door Stop Block

    (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 Thermo Fisher Scientific SAM12 User Manual 11-11...

  • Page 160: Trouble Shooting

    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 SAM12 Normal Start-up (Boot-up) key-switch is turned ON is indicated by: Operation • a series of “System Self Test” display messages •...
  • Page 161 (assuming the volume has not been turned off) it up) & charging LED is OFF would indicate that the SAM12 is “dead”. LED OFF - indicates the AC mains supply is OFF and instrument cannot run off the battery.

  • Page 162: Starts-Up But Display Is "Blank" & Fails Self Tests (No Chimes)

    Controller Board type 5670A - Removal and Replacement (page 11-6). 8. If the SAM12 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...

  • Page 163: Will Not Run & Displays "Out Of Service - High Background Conditions

    Removal and Replacement (page 11-6). This condition occurs when the Background activity prevents Will Not Run & Displays the SAM12 from discriminating the pre-set alarm level with the “Out Of Service – High required confidence within the Maximum Monitoring Time Background Conditions”...

  • Page 164: Fails Lamp Or Led Tests

    • Measure the ambient background level with a suitable survey monitor. If the background is high, it must be reduced or the SAM12 moved for normal monitoring operation to resume. IF THIS CONDITION PERSISTS and the background and measurement limits seem to be reasonable, ‘frisk’...

  • Page 165: Display Backlight Failure

    Controller Board type 5670A - Removal and Replacement (page 11-6). If the SAM12 starts and runs but will not accept a valid Will Not Accept Valid password, a fault is indicated either in the LCD Touch-pad or Passwords the Controller board.

  • Page 166: Will Not Enter Background Mode

    5670A - Removal and Replacement (page 11-6) if the switches are working correctly. If the SAM12 has acquired a valid set of background readings, Locked in Background but will not enter measurement mode when a sample is entered Mode and the Start switch is operated, proceed as follows: 1.

  • Page 167: Locked In Measurement Mode

    If the problem persists even after changing the Controller board a new disk should be considered. If USB data output from the SAM12 to a serial printer, or USB Output Data is external computer, contains spurious characters, or is corrupted...

  • Page 169: Chapter 12 Spares List

    SECURITY DONGLE A92169/A BATTERY CONTROLLER BOARD 5660A HV & AMPLIFIER BOARD FHT681 425430223 CCM BOARD FHT681 425430224 LOUDSPEAKER 91603/A START SWITCH 701829KG DOOR SWITCH 406859KG TOUCH SCREEN 702633ND TOUCH-SCREEN CONTROLLER 702632ND DYNODE CHAIN A3-54040 Thermo Fisher Scientific SAM12 User Manual 12-1...
  • Page 170 DC-DC CONVERTER BOARD 5675A LOUDSPEAKER B91603/A DOOR SWITCH 406859KG PWR MODULE AC/DC 702473KJ 12.1” LCD 702548ND BACKLIGHT INVERTER 702549ND IC/MEM SDRAM 256MB 702627PD TOUCH-SCREEN CONTROLLER 702632ND TOUCH SCREEN 702633ND KEYSWITCH 702663KG START SWITCH 701829KG 12-2 SAM12 User Manual Thermo Fisher Scientific...

  • Page 171: Drawings List (By Assembly)

    Issue: 1.0 Spares List Drawings List (by Assembly) SAM12 FAMILY TREE C92049 SAM 12 only DYNODE CHAIN - General A3/54040 Assy 42543-0223 HV & AMPLIFIER BOARD - 42543/0223 General Assy 42543-0224 CCM BOARD - General Assy 42543/0224 5659B TEMPERATURE SENSOR...

  • Page 172: Drawings List (Letter And Numerical Order)

    BRD - General Assy 5671A DUAL CHANNEL R2422 C91929/A BOARD - General Assy 5675A DC-DC CONVERTER C91965/A BOARD - General Assy SAM12 FAMILY TREE C92049 SAM 12 only 5672A 5-WAY LED CLUSTER - D91956/A General Assy 5670A ETX CONTROLLER BOARD...
  • Page 173 Disintegrations per minute Efficiency Correction Factor Probability of False Alarm Figure of Merit Person, Persons or Team responsible for setting up day-to-day Health Physicist running and maintenance of the SAM12 Health Physicist High Voltage kiloBecquerel Lead Liquid Crystal Display Light Emitting Diode...
  • Page 174 Personnel who are general users of the system and normally ThermoFisher carry out routine diagnostic and test functions Maximum Monitoring Time Tmax Minimum Monitoring Time Tmin Actual Monitoring Time Tmon Anyone associated with or operating the instrument. User voltage G:II SAM12 User Manual Thermo Fisher Scientific...
  • Page 175 5-36 effect Changes to the Normal Background Monitoring Information 5-16, 5-30 5-49 Instrument Configuration Report CLEAR Result 5-55 5-38 Commence Monitoring 5-53 Instrument Contaminated 5-61 Critical Error 5-62 Interfaces 5-43 Introduction Data Menu 5-31 Thermo Fisher Scientific SAM12 User Manual...
  • Page 176 Temporary Error 5-62 Thresholds 5-28 Notes regarding Two-Door Timed Counts 5-17 SAM12 5-14 Number Functions To unpack the SAM12 Operating Instructions Options Out of Calibration 5-47 Unpacking and Installation User Screen 5-45 Using the Touchscreen Functions Params 1 Params 2...

Table of Contents