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Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
Type
CONTINUOUS Document No.
6-RM-937 Rev/Mod
A-0 Release Date
09/17/2018 Page
1 of 33
Tank Farm Maintenance Procedure RADCON
USQ # Routine Maintenance
CHANGE HISTORY ( LAST 5 REV-MODS )
Rev-Mod Release Date Justification: Summary of Changes
A-0 09/17/2018 Maintenance Request New procedure.
This is a new revision. The First Time Use process as defined in TFC-OPS-OPER-C-13
can be used during the initial performance of this revision.
Table of Contents Page
1.0 PURPOSE AND SCOPE ................................................................................................................ 3
1.1 Purpose ................................................................................................................................ 3
1.2 Scope ................................................................................................................................... 3
2.0 INFORMATION............................................................................................................................. 3
2.1 Terms and Definitions........................................................Error! Bookmark not defined.
2.2 General Information ............................................................................................................ 3
3.0 PRECAUTIONS AND LIMITATIONS......................................................................................... 4
3.1 Personnel Safety.................................................................................................................. 4
3.2 Equipment Safety ................................................................................................................ 4
3.3 Radiation and Contamination Control ................................................................................ 5
3.4 Environmental Compliance ................................................................................................ 5
3.5 Industrial Hygiene ............................................................................................................... 5
3.6 Limits .................................................................................Error! Bookmark not defined.
4.0 PREREQUISITES .......................................................................................................................... 6
4.1 Special Tools, Equipment and Supplies.............................................................................. 6
4.2 Performance Documents ....................................................Error! Bookmark not defined.
4.3 Field Preparation ................................................................................................................. 6
5.0 PROCEDURE ................................................................................................................................. 7
5.1 Preliminary Check, Inspection and Set-up .......................................................................... 7
5.2 As-Found Reading .............................................................................................................. 8
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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CONTINUOUS Document No.
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5.3 Spectrum Gain Verification/Adjustment .......................................................................... 12
5.4 Detector Fail Check .......................................................................................................... 13
5.5 Calibration......................................................................................................................... 14
5.6 Efficiency/Energy Calibration .......................................................................................... 19
5.7 CAM Swap/Function Check ............................................................................................. 21
5.8 Restoration ........................................................................................................................ 27
5.9 Acceptance Criteria ........................................................................................................... 28
5.10 Review .............................................................................................................................. 28
5.11 Records ............................................................................................................................. 28
Table 1 – Parameters Table ....................................................................................................................... 29
Figure 1 – Access Flow Chart ................................................................................................................... 33
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
Type
CONTINUOUS Document No.
6-RM-937 Rev/Mod
A-0 Release Date
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1.0 PURPOSE AND SCOPE
1.1 Purpose
This procedure provides a safe, uniform method for calibration of the Canberra Alpha
Sentry Continuous Air Monitor (CAM).
1.2 Scope
This procedure provides a safe, uniform method for calibration of the Canberra Alpha
Sentry CAM.
2.0 INFORMATION
2.1 General Information
The Sentry system consists of an ASM1000 (ASM) controller, or NetCam
hardware/software and AS1700 sampling head(s). Calibration and operating parameters
are stored in the sampling head while the ASM or NetCam allows the user to view the
sampling head parameters and make applicable changes.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
Type
CONTINUOUS Document No.
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A-0 Release Date
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3.0 PRECAUTIONS AND LIMITATIONS
3.1 Personnel Safety
3.1.1 The sampling head electronics are sensitive to radio frequency interference
(RFI) and the detectors are sensitive to light interference. The electronics are
also sensitive to large AC line voltage spikes.
3.1.2 Conductive materials on the detector face, such as engine exhaust, chemical
vapors and moisture may also interfere with alpha particle detection.
3.1.3 The radon rejection screen, required where radon presence is likely, is very
fragile and the edge is very sharp. Take care in handling. Avoid contact with
bare skin and other oils which will impede performance of the screen.
Replace screens that are damaged (creased, bent, etc.) CAMs with radon
rejection screen removed will be labeled “Radon Rejection Screen
Removed”.
3.1.4 CAM internal surfaces are potentially contaminated. Prior to maintenance
(e.g., calibration, repair, etc.) outside of a c CA/HCA/ARA, the CAM must
be cleared from radiological control by the RadCon Organization. Otherwise,
provisions for maintenance in place or in a designated area will be addressed
in the work package.
3.1.5 The work activity described in this procedure has been determined to be
“Skill Based,” however the hazard of the specific work environment must be
addressed during Work Package preparation and execution. The hazards
associated with the specific work environment could render the work as
beyond skill-based.
3.1.6 Detailed Radiological Work Screening for this procedure will be addressed as
part of the associated Work Package preparation.
3.1.7 ENSURE CAM parameters are updated from the ASM by using “Auto
Config.” each time a CAM is connected to an ASM or when parameters are
changed.
3.2 Equipment Safety
CAUTION - The radon rejection screen is very fragile. Avoid contact with bare skin
and other oils, which will impede performance of the screen.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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CONTINUOUS Document No.
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3.3 Radiation and Contamination Control
Work in radiological areas will be performed using a radiological work permit following
review by Radiological Control per ALARA Work Planning procedure,
TFC-ESHQ-RP_RWP-C-03.
Exercise caution when handling radioactive calibration sources.
3.4 Environmental Compliance
The Central Shift Office must be notified in the event of a leak or a spill in accordance
with TFC-ESHQ-ENV_FS-C-01, Environmental Notification.
3.5 Industrial Hygiene
Industrial hygiene (IH) sampling and/or monitoring requirements for tank farm entry will
be specified in the industrial Hygiene Sampling Plan identified in each farm specific
Tank Vapor Information Sheet (TVIS). The TVIS for AP farm is TVIS-AP-001.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
Type
CONTINUOUS Document No.
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A-0 Release Date
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4.0 PREREQUISITES
4.1 Special Tools, Equipment and Supplies
The following supplies may be needed to perform this procedure:
Measuring and Test Equipment (M&TE) used to collect acceptance criteria data
during performance of this procedure shall meet the following requirements:
Be within its current calibration cycle as evidence by an affixed
calibration label
Be capable of desired range
Have accuracy greater (tighter) than the data point acceptance
tolerance specified on the Data Sheet for the instrument being
calibrated.
47 mm Alpha source with National Institute of Standards and
Technology (NIST) traceable activity level of 20,000 to 50,000 dpm
in a filer cartridge with 40 mm active area
Calibrated Sierra mass flow meter or equivalent
Air Sample filter Holder Puck with a filter approved by RadCon
ASM with Sampling Head Interface Cables
Isopropyl or ethyl alcohol, as applicable
O-Rings for filter cartridge guide and sample holder piston
Replacement radon rejection screens
Cotton ball/Cotton-tipped Applicator.
Glyptal paint
Nitrile Gloves
Torque screwdriver set at 6 in/lbs
Laptop with CamGainCal software, RS-232 port and interface cable.
4.2 Field Preparation
4.2.1 For Calibration, if CAM is new, RECORD N/A or efficiency from last
calibration on Data Sheet, from sticker or stored value.
NOTE - Facility Specific Prerequisites will be identified in the associated Facility Work
Document.
4.2.2 ENSURE the source calibration sticker indicated the source is for use on the
Alpha Sentry CAM.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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5.0 PROCEDURE
NOTE - Refer to Table 1 and Figure 1 for guidance in navigating to the control and indication
features of the ASM. Portions of this procedure that refer to the audible/visual alarms
on the CAM head may be disregarded for Alpha Sentry CAMs that do not have an
optional alarm head installed.
5.1 Preliminary Check, Inspection and Set-up
5.1.1 IF this is a Functional Check, CAM Exchange or new field installation, GO
TO Section5.7.
5.1.2 COMPLETE preliminary information on Data Sheet:
Doc Num
PM/S Num
CAM Serial Number
M&TE ID# and Calib. Exp. Date
Source:
Isotope
S/N
Activity
Cal. Exp. Date
5.1.3 VISUALLY INSPECT instrument for physical damage and loose or broken
knobs.
5.1.4 VERIFY upper and lower O-Rings are present, RECORD status on Data
Sheet.
5.1.5 IF O-Rings are damaged or missing, REPLACE O-Rings.
5.1.6 CONNECT the Alpha Sentry Monitor (ASM) to sampling head interface and
power cable.
5.1.7 APPLY power, AND
ALLOW approximately 10 minutes for warm-up.
5.1.8 PRESS “Log In” on ASM AND
ENTER access code. (May need to be repeated)
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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5.1 Preliminary Check, Inspection and Set-up (Cont.)
NOTE - For a new CAM, access levels and passwords are set up using the laptop
software, Security Screen and Codes.
5.1.9 ESTABLISH communications between the ASM and the CAM as follows:
5.1.9.1 PRESS System Setup (F4).
5.1.9.2 PRESS Network Config (F4).
5.1.9.3 IF not communicating, PRESS add CAM (F2).
5.1.9.4 PRESS Detailed Display.
5.1.9.5 ENSURE parameters are correct for each CAM addressed by the
ASM as listed on Table 1.
5.1.9.6 RECORD results on Data Sheet.
5.2 As-Found Reading
5.2.1 OPEN door on sampling head.
5.2.2 INSERT air sample filter head puck with applicable air sample filter.
5.2.3 LEAVE the system on for a minimum of 10 minutes after warm up.
5.2.4 OBSERVE count rate on ASM detailed display.
5.2.5 IF indicated count rate is greater than 5 cpm (non-contaminated units),
CONTACT Radiological Control Technician (RCT) to survey the instrument
internals prior to proceeding.
5.2.6 RECORD count rate on calibration Data Sheet.
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5.2 As-Found Reading (Cont.)
5.2.7 SETUP Alpha source information into Pu 239 as follows:
5.2.7.1 PRESS System Setup key.
5.2.7.2 PRESS Source Info key.
5.2.7.3 SCROLL to Units using the Vertical Index and Horizontal Index
keys.
5.2.7.4 ENSURE DPM is highlighted.
5.2.7.5 SCROLL to Activity.
5.2.7.6 INPUT Alpha source activity in DPM.
5.2.7.7 SCROLL to Energy AND
ENSURE value is 5.15 MeV.
5.2.7.8 PRESS the Detailed Display key to return to the main menu.
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5.2 As-Found Reading (Cont.)
5.2.8 MEASURE the As-Found efficiency as follows:
5.2.8.1 PRESS the Perf. Check key.
5.2.8.2 WHEN “Primed” is displayed on ASM status screen, INSERT
calibration puck with Alpha Pu 239 source into sampling head
AND
CLOSE door to start the count.
5.2.8.3 CHECK Performance and Acute checks are complete, indicated
by ASM display message PASS or FAIL.
5.2.8.4 IF system passes, RECORD on “system pass” box on calibration
Data Sheet1.
5.2.8.5 IF system fails, RECORD on “system fails” box on calibration
Data Sheet AND
NOTIFY FWS, Radcon Facility point of contact, and RADCON
for directions.
5.2.8.6 RECORD As-Found efficiency and % change from previous
calibrations, on Data Sheet, or N/A for a new CAM.
𝐿𝑎𝑠𝑡 𝐶𝑎𝑙.𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦−𝐴𝑠 𝐹𝑜𝑢𝑛𝑑 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑦
𝐿𝑎𝑠𝑡 𝐶𝑎𝑙.𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦𝑥100 = 𝑃𝑒𝑟𝑐𝑒𝑛𝑡 𝐶ℎ𝑎𝑛𝑔𝑒
30% − 27.3%
30%𝑥100 = 9%
5.2.8.7 IF Efficiency is less than 29% or Percentage Change is greater
than +/- 10%, CIRCLE (in red) efficiency on Data Sheet.
5.2.8.8 NOTIFY FWS.
5.2.8.9 REMOVE the source.
5.2.8.10 PRESS Detailed Display key to return to main menu.
5.2.8.11 SELECT desired CAM if more than one CAM is addressed by
ASM.
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5.2 As-Found Reading (Cont.)
NOTE - A radon rejection screen may not be installed if the CAM is using
a snorkel to sample areas where radon is not likely, such as down-
stream from a HEPA filter. CAMs with the screen removed will be
labeled “RADON Rejection Screen Removed”.
5.2.8.12 INSPECT CAM air sample flow path.
5.2.8.13 IF dirt is present, PERFORM the following:
a. REMOVE power from CAM
CAUTION
The radon rejection screen is very fragile. Avoid contact with bare skin
and other oils, which will impede performance of the screen.
b. CLEAN the radon rejection screen if present.
c. IF Alpha Sentry has an in-line manifold and a radon
rejection screen, REMOVE in-line manifold to gain
access to radon rejection screen.
d. SLIDE screen out of retaining grooves.
NOTE - Particles not removed with dry air my cause
scratches in subsequent steps.
e. CLEAN OR REPLACE screens that are damaged (dirty,
creased, bent, etc.).
f. IF dirt is present, CLEAN area behind screen retainer.
g. REINSTALL screen and in-line manifold if used.
5.2.8.14 IF detector diode face is dirty, PERFORM the following:
a. TURN OFF power.
b. CLEAN detector using dry air across the surface to
remove particles.
c. TO CLEAN detector face, USE a cotton ball or cotton-
tipped applicator moistened with isopropyl or ethyl (use of
stronger solvents will remove factory applied coatings).
d. ENSURE residual moisture has been removed prior to
applying power to Alpha Sentry with the use of dry air.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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5.3 Spectrum Gain Verification/Adjustment
5.3.1 ESTABLISH laptop communication with the CAM head using the RS-232
interface cable and “CamGainCal” software.
5.3.2 ENSURE “Status Page” is selected on laptop display.
5.3.3 INSERT calibration puck with Alpha Pu 239 source into sample.
5.3.4 CONFIRM position of peak channel (PkChnn) is between 113-115 channels.
5.3.5 RECORD As-Found peak channel number on Data Sheet.
NOTE - Before making this adjustment, CAM Head should have been powered for at
least 10 minutes. A torque screwdriver set at 6 in/lbs should be used to reinstall
shield.
5.3.6 REMOVE cover/shield AND
ADJUST peak position by adjusting RV3 (lower potentiometer) on CAM
Heads PREAMP/AMP board.
5.3.7 USE Glyptal or equivalent on potentiometer if an adjustment is required.
5.3.8 AFTER adjustment is made, REINSTALL cover and shield.
5.3.9 RECORD As-Left peak channel number on Data Sheet.
5.3.10 REMOVE laptop and reconnect CAM to ASM.
5.3.11 RESTORE communications by performing steps 5.1.9.1 through 5.1.9.5.
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5.4 Detector Fail Check
5.4.1 PERFORM the following:
5.4.1.1 SELECT System Setup, Parameter Setup, Alarm Setup, AND
SET Count Cycle to 5 minutes.
5.4.1.2 ESTABLISH “zero count” condition using any or all of the
following:
a. INSTALL a clean filter paper, aluminum foil, or other
material to establish no count condition for the detector.
b. CLEAN detector with isopropyl or ethyl alcohol.
c. ADJUST Upper Energy Limit and Analysis Window
values. For example, set Upper Energy Limit to 9.9 Mev
and Analysis Window to 0.1 Mev.
d. CONNECT CAM to a Power Line Conditioners to
remove noise spikes.
5.4.1.3 OBSERVE that ALARM Log indicates “No Spectral Data”
within 8 hours.
5.4.1.4 RECORD on Data Sheet.
5.4.1.5 RETURN any adjusted parameters to values specified in Table 1.
5.4.1.6 RETURN detector to normal condition.
5.4.1.7 PRESS Detailed Display.
5.4.1.8 IF more than one CAM is addressed by the ASM, SELECT
desired CAM to return to normal operation.
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5.5 Calibration
System Diagnostics
5.5.1 LOG IN AND
PRESS the following sequence of keys in the order below:
Detail Display
System Setup (F4)
Calibration. (F5)
Diagnostic Test (F3)
5.5.2 SELECT “ASM” or “CAM” by using Horizontal Index and Vertical Index
keys AND
PRESS Enter.
5.5.3 PRESS Lamp Check (F1).
5.5.4 CONFIRM all lights operate.
5.5.5 PRESS Audio Check (F2)
5.5.6 IF ASM is selected in Step 5.5.2, CONFIRM ASM audible alarm operates
as applicable.
5.5.7 IF CAM is selected in step 5.5.2, CONFIRM CAM audible alarm operates
as applicable.
5.5.7.1 IF CAM audible alarm does not operate, CONTACT Radcon
FLM/FWS.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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5.5 Calibration (Cont.)
5.5.8 PRESS Relay Check (F3), system will sequence through checks.
5.5.9 INDICATE when relays are not operating properly.
5.5.10 RECORD on Data Sheet.
5.5.11 IF lamp check, audio check, or relay check fails, PERFORM retest.
5.5.11.1 IF retest fails, CONTACT Radcon FLM/FWS.
5.5.12 PRESS Version (F4) AND
RECORD firmware version on Data Sheet.
5.5.13 REPEAT Steps 5.5.1 and 5.5.3 through 5.5.12 for CAM.
5.5.14 PRESS Detailed Display key to return to main menu.
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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5.5 Calibration (Cont.)
Air Flow Calibration
NOTE - Air flow calibration must be performed even when As-Founds are within
tolerance. The air flow calibration establishes new calibration date stored in the
sample head.
CAUTION
The radon rejection screen is very fragile. Avoid contact with bare skin
and other oils, which will impede performance of the screen.
5.5.15 IF radon rejection screen will not be used, ENSURE it is removed.
5.5.16 INSERT air sample filter puck with appropriate air sampler filter into sample
head.
5.5.17 RECORD filter paper type on Data Sheet.
5.5.18 ENSURE vacuum is turned ON with mass flow meter in flow path.
5.5.19 SET flow to values listed on Data Sheet.
5.5.20 RECORD As-Found flow rates on calibration Data Sheet.
5.5.21 MARK (in red) all out of tolerance flow rates AND
NOTIFY FWS.
5.5.22 LOG IN AND
PRESS the following sequence of keys to access air flow calibration menu in
the order below:
Detail Display
System Setup (F4)
Calib. (F5)
Air Flow (F2)
Canberra Alpha Sentry Continuous Air Monitor (CAM) Calibration Procedure
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5.5 Calibration (Cont.)
5.5.23 ENSURE Range values are 0.5 to 2.6 CFM using Horizontal and Vertical
Index Keys as needed.
5.5.24 SET air flow to air flow points as specified on Data Sheet.
5.5.25 MARK applicable point (PT.1) using Horizontal and Vertical Index keys,
AND
PRESS Enter.
5.5.26 ENSURE meter value is set to air flow point as specified on Data Sheet
AND
PRESS Enter.
5.5.27 REPEAT steps 5.5.24 and 5.5.26 for the remaining air flow points specified
on Data Sheet 1 – Cam Calibration.
5.5.28 PRESS the Detailed Display key to return to the main menu.
5.5.29 SET flow values listed on Data Sheet.
5.5.30 IF indicated air flow values are not within the acceptable range, REPAIR
CAM AND
RECALIBRATE the air flow on the sampling head.
5.5.30.1 REPEAT steps 5.5.15 through 5.5.30 to
REPAIR/RECALIBRATE.
5.5.31 RECORD As-Left flow rates on Data Sheet.
5.5.32 RETURN flow to Radcon designated normal flow value.
5.5.33 REPLACE the air sampler filter with a 47 mm solid plastic obstruction.
REPLACE puck in sample head.
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5.5 Calibration (Cont.)
5.5.34 OBSERVE air flow rate on ASM display AND
RECORD indicated As-Found flow rate on Data Sheet.
5.5.35 IF flow rate is 0 +/- 0.3 CFM, PASS the system in-leakage test.
5.5.36 REMOVE Vacuum.
5.5.37 REMOVE Obstruction.
5.5.38 IF system fails the in-leakage test, NOTIFY FWS.
5.5.39 REPAIR leak AND
REPEAT steps 5.5.32 through 5.5.39.
5.5.40 RECORD As-Left rate Data Sheet.
5.5.41 RESTORE Vacuum to clear Low Flow Alarm.
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5.6 Efficiency/Energy Calibration
5.6.1 PRESS the following sequence of keys in the order below:
Detail Display
System Setup (F4)
Calib (F5)
EFFNCY (F1)
5.6.2 INSERT calibration puck with Alpha Pu 239 source into the sample head.
5.6.3 OBSERVE System starts counting sequence with the door is closed and
System calculates the detector efficiency when the count is complete.
5.6.4 RECORD counting efficiency value in As-Left section of Data Sheet.
5.6.5 RETURN to Network Display or Detail Display.
5.6.5.1 IF more than one CAM is addressed by the ASM, SELECT
desired CAM.
5.6.6 OPEN AND SHUT sample chamber door.
5.6.7 CONFIRM that audible and visual alarms are activated on the sample head
and “Chronic Release” appears on the display after approximately five
minutes.
5.6.8 PRESS Stop Alarm.
5.6.9 SET “Acute Alarm Minimum Count Limit” to 200 and “Acute Alarm
Minimum Count Limit Multiplier” to 200.
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5.6 Efficiency/Energy Calibration (Cont.)
5.6.10 SET “Count Cycle” to 5 minutes.
5.6.11 PRESS filter change twice.
5.6.12 OPEN AND SHUT sample chamber door.
5.6.13 CONFIRM that audible and visual alarms are activated on the sample head,
and “Chronic Release” appears on the display after approximately five
minutes, THEN PRESS “Stop Alarm”.
5.6.14 MARK appropriate box for alarm verification on Data Sheet.
5.6.15 PRESS filter change (F1) twice.
5.6.16 REPLACE source with clean filter paper.
5.6.17 RETURN any adjusted parameters to values specified in Table 1.
5.6.18 PRESS Detailed Display to return to normal operation.
NOTE - This step may require cycling through filter change (F1) to cancel counts.
5.6.19 ENSURE Status of Alarms is Normal.
5.6.20 PROCEED to Step 5.8.
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5.7 CAM Swap/Function Check
NOTE - Pressing Detail Display or Network Display will return user to Main Menu.
5.7.1 ENSURE that personnel in the affected area are notified CAM checks are
being performed and alarms may be activated.
NOTE - Security levels and Acute Alarm values must be checked/set using a laptop.
Alarm Parameters may be adjusted to support plant conditions per radcon
direction. As found discrepancies must be confirmed by radcon.
5.7.2 LOG ON to ASM AND
ENSURE ASM accessible parameters are correct for each CAM addressed
by ASM, as listed in Parameter Tables.
5.7.3 REFER to Data Sheet for facility specific alarm/control function.
5.7.4 RECORD applicable information such EDP code, Sample Flow, Alarm Set
Points, and Calibration Due Date on Data Sheet.
5.7.5 IF replacing an In-Service CAM, PROCEED to step 5.7.14.
5.7.6 CHECK sample door knob and locking mechanism for looseness AND
TIGHTEN until no longer loose.
NOTE - A radon rejection screen may not be installed if the CAM is using a snorkel to
sample areas where radon is not likely such as down-stream from a HEPA
filter. CAMs with the screen removed will be labeled “RADON Rejection
Screen Removed.”
5.7.7 REQUEST Radiological Control survey radon rejection screen if present
AND
SAMPLE chamber components, removing sample paper.
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5.7 CAM Swap/Function Check (Cont.)
5.7.8 INSPECT chamber and detector for signs of surface damage, scarring, or
foreign material, IF dirt is present, AND
REMOVE dirt.
5.7.9 CHECK chamber O-Rings for dirt or damage.
5.7.9.1 CLEAN OR REPLACE with like kind O-Rings if dirty or
damaged.
5.7.10 RECORD results in comments section of Data Sheet.
5.7.11 IF signs of dirt or damage to the radon rejection screen are noted when
screen is used, PERFORM the following:
CAUTION
The radon rejection screen is very fragile. Avoid contact with bare skin
and other oils, which will impede performance of the screen.
5.7.11.1 REMOVE screen from top inlet of CAM by sliding out on track
to clean CAM.
5.7.11.2 IF dirt is present, CLEAN upper air chamber.
5.7.11.3 CLEAN OR REPLACE screen.
5.7.11.4 REINSTALL screen on the top inlet of CAM
OR
REPLACE screens that are damaged (creased, bent, etc.)
5.7.11.5 ENSURE chamber door is closed with sample filter installed.
5.7.12 LOG IN to ASM
5.7.13 PROCEED to step 5.7.18.
5.7.14 REPLACE in-service CAM with spare CAM.
5.7.15 RESTORE Vacuum, AND
LOG IN to ASM.
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5.7 CAM Swap/Function Check (Cont.)
5.7.16 INSTALL new CAM as follows:
5.7.16.1 SELECT System Setup.
5.7.16.2 SELECT Network Configuration.
5.7.16.3 SELECT Add CAM or Auto Configuration
5.7.16.4 ENSURE CAM parameters agree with values listed in parameter
table.
5.7.17 ENSURE CAM installation is complete and a clean filter is installed.
NOTE - Steps 5.7.18 through 5.7.38 are performed at least monthly. Some units used in
contamination areas have disabled acute alarms. Some new CAMs need a
firmware upgrade to enable alarm to function. Available by contacting Radcon
Engineering for this procedure.
5.7.18 CONFIRM the following information from the Detail Display screen:
5.7.18.1 CONFIRM Efficiency and Flow calibration are current
5.7.18.2 IF calibration dates are not current, RETURN to step 5.7.14 for
CAM replacement
5.7.18.3 ENSURE Air flow rate is set to radcon specified values
5.7.18.4 CONFIRM Alarms are clear.
5.7.19 INFORM personnel near the CAM and personnel who may be remotely
monitoring the CAM of pending filter change (alarm).
5.7.20 VERIFY the Active LED on upper right front face of ASM is ON.
NOTE - If sample flow is present the puck with bypass holes (red filter holder) must be
used.
5.7.21 ENSURE activity of source matches values entered in ASM.
5.7.22 CONFIRM Vacuum on each CAM.
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5.7 CAM Swap/Function Check (Cont.)
5.7.23 PRIME CAM(s) by selecting Performance Check from Detail Display
Screen.
5.7.23.1 OBTAIN designated check source AND
REPLACE filter cartridge on CAM being tested.
5.7.23.2 CLOSE/LATCH the door.
5.7.23.3 CONFIRM the following:
Red alarm LED’s on all CAMs connected ASM will begin
to blink, indicating that CAMs are primed for the
performance
When counting, the red LED is ON and green LED on
CAM blinks
Strobe and Sonalert on CAM and Red Light on ASM
operate upon alarm
OBSERVE the Performance and Acute check are
complete, the ASM will display the message PASS or
FAIL.
NOTE - Step 5.7.24 provides the option to complete the Performance Check on each
CAM attached to the ASM before performing the alarm check on each CAM as
in steps 5.7.25 through 5.7.39, or completing the Performance Check and
Alarm Check on an individual CAM before proceeding to the next CAM, to
support different facility configuration or CAM location challenges.
5.7.24 REPEAT Steps 5.7.23.1 and 5.7.23.3 for each CAM to be tested and
addressed by the ASM
OR
CONTINUE performing steps 5.7.25 through 5.7.39.
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5.7 CAM Swap/Function Check (Cont.)
5.7.25 ENSURE vacuum is restored for each available CAM.
5.7.26 PRESS Detail Display AND
SELECT CAM being tested.
5.7.27 OPEN AND SHUT sample chamber door, with source installed.
5.7.28 CONFIRM the audible and visual local/remote alarms are activated on the
sample head and ASM after approximately one minute.
5.7.29 PRESS STOP ALARM.
5.7.30 PRESS filter change (F1) twice.
5.7.31 REMOVE all radiological sources from CAM.
5.7.32 PERFORM Low Flow Alarm AND in-Leakage checks as follows:
5.7.32.1 REPLACE the air sampler filter puck with a black puck
containing a 47 mm solid plastic obstruction.
5.7.32.2 OBSERVE/DOCUMENT Low Flow Alarm(s) including remote
alarms where specified on the Data Sheet.
5.7.32.3 OBSERVE air flow rate on ASM display.
5.7.32.4 IF flow rate is 0 +/- 0.3 CFM, system passes in leakage test.
5.7.33 IF system fails in leakage test, NOTIFY FWS.
5.7.33.1 REPAIR leak AND
REPEAT steps 5.7.32.1, 5.7.32.3 and 5.7.32.4.
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5.7 CAM Swap/Function Check (Cont.)
5.7.34 REMOVE Vacuum AND
REMOVE black puck containing 47 mm solid plastic obstruction.
5.7.35 REQUEST Radiological Control replace sample paper on CAM tested, as
directed by radcon management.
5.7.36 RESTORE Vacuum and once alarm lights on ASM clear
PERFORM the following:
5.7.36.1 RETURN to Detail Display screen for CAM being tested.
5.7.36.2 ENSURE flow on installed CAM is normal.
5.7.37 IF step 5.7.23 is complete for all CAMs to be tested (addressed by ASM),
GO TO step 5.7.40.
5.7.38 IF Performance Check has not been performed, RETURN to step 5.7.23 for
CAMs to be tested
5.7.39 IF Performance Check has been performed, RETURN to step 5.7.25 for all
CAMs to be tested.
5.7.40 ENSURE ACUTE and CHRONIC Alarms occurred as indicated by pressing
Data Review, followed by Alarm Log Button.
5.7.41 RECORD monthly test on Data Sheet.
5.7.42 LOG OUT of ASM.
5.7.43 ENSURE instrument restoration by observing indication, alarms or set points
are consistent with expected condition.
5.7.44 RECORD any abnormal results on the Work Record AND
NOTIFY FWS.
5.7.45 IF CAM was replaced with a spare CAM, REQUEST Radiological Control
survey removed CAM.
5.7.46 TRANSPORT removed CAM to appropriate area for decontamination or
storage.
5.7.47 UPDATE monthly function check sticker if used and Data Sheets.
5.7.48 RETURN work package to FWS.
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5.8 Restoration
5.8.1 ENSURE test equipment has been disconnected and removed.
5.8.2 RECORD final counting efficiency value on Efficiency Sticker (or
Efficiency Tag) or calibration sticker, as applicable.
5.8.3 INCLUDE a label with the following criteria AND
MARK the line that reflects the filter paper used during calibration, as
applicable.
[ ] Cal limited to Versapor/Millipore Filters;
[ ] Other_____________________________
NOTE - Exceptions to the 365 day interval must be justified and approved in writing by
Radiological Control.
5.8.4 COMPLETE AND ATTACH a calibration sticker and Efficiency Sticker
(365 day calibration frequency) to the instrument case with calibration
performer’s name and last done/next due dates
OR
APPLY/UPDATE functional test label on CAM, as needed.
5.8.5 IF a snorkel is installed on the radon rejection screen has been removed,
ENSURE a label is attached to the CAM that says “RADON Rejection
Screen Removed”.
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5.9 Acceptance Criteria
Acceptance Criteria has been met when Steps in this procedure have been satisfactorily
performed and As-Left values meet the specifications and tolerances per steps in the
procedure.
5.10 Review
Review the calibration to ensure the requirements of this procedure have been met.
5.11 Records
This procedure is performed within a work package, as such, the procedure in its entirety
will be maintained as a record per the Work Control process.
The record custodian identified in the Company-level Records Inventory and Disposition
Schedule (RIDS) is responsible for record retention in accordance with
TFC-BSM-IRM_DC-C-02.
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Table 1 – Parameters Table
(Page 1 of 4)
ASM Parameter Setup
Network Display System Setup Parameter Setup
SOFTKEY
BUTTON
Default Value Value Entered
Alarm Setup
Alarms
Alarm Limits Alarm Method
Limit
Low Flow
High Flow
DAC-hr
Computation
Confidence Level
DAC Factor
Upper Energy Limit (MeV)
Analysis Window (MeV)
Count Cycle (min)
Acute Interval (sec)
Network Display System Setup Parameter Setup
UNITS Air Flow Cfm (or L/m) Cfm
Reported
Concentration
Activity
Volume
Communications Standard RS-
232 Port
Config.
Baud
RS-232 Hoist
Interface Port
Baud
Miscellaneous Altitude
Temperature
Timeouts (Min) Log In
LCD Backlight
Eff. Calibration Frequency (days)
Warn Ahead (Weeks)
Activate Trouble Light
CAM Offline Retry (sec)
Flow Alarm Inhibits Cycle
Network Display System Setup Source Information
Count Time (Min.)
Acceptable
Performance Check Range
% Above Efficiency
% Below Efficiency
Units
Activity
Energy NOTE: Alarm Values may vary pending plant conditions and/or facility specific criteria per RADCON direction
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Table 1 - – Parameters Table (Cont.)
(Page 2 of 4)
CONNECT LAPTOP TO J102 AND SELECT SETUP FROM ASPC PROGRAM
ALARM
ASM ALARMS ALARM
CONDITION
RED
LAMP
YELLOW
LAMP
HORN EXPOPSURE
RELAY
TROOUBLE
RELAY
SCREEN ALARM
LOG
ENTRY
Acute
Release
Chronic
Release
High
Background
Instrument
Fault
Stop Alarm
Button
ALARM
CAM ALARMS Press any key to change value and ENTER to accept change
ALARM
CONDITION
RED STROBE
(Lamp)
HORN EXPOSURE
RELAY
TROUBLE
RELAY
Acute Release
Chronic Release
High Background
Instrument Fault
Stop Alarm
Button
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Table 1 - – Parameters Table (Cont.)
(Page 3 of 4)
SECURITYLEVELS
ASM 1000 MENU
ITEMS
SECURITY
LEVEL 1
SECURITY
LEVEL 2
SECURITY
LEVEL 3
SECURITY
LEVEL 4
Filter Change
Performance Check
Data Review
- Historical Trends
- Alarm Log
- View Spectrum
System Setup
- Parameter Setup
- Source Information
- CAM control
- Network
Configuration
- Calibration
NOTE: Security settings may vary based on facility needs.
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Table 1 - – Parameters Table (Cont.)
(Page 4 of 4)
CAM
ID’s IDENTIFICATION UP TO 39 CHARACTERS – ALL 39 CHARACTERS WILL
APPEAR IN DETAILED DISPLAY; ONLY THE FIRST 7 CHARACTERS WILL
APPEAR IN NETWORK DISPLAY (TYPICAL EXAMPLES Z214, SOUTH
WALL, N-W CORNER)
CAM # Example “CAM Serial Number”
1
2
3
4
5
6
7
8
CAM
Alarm Parameters
PARAMETER VALUE VALUE ENTERED
Max. Allowable Peak Shift
Channels (global)
Acute Alarm Minimum Count Limit
*Acute Alarm Count Limit
Multiplier
Number of Consecutive “NO
Counts” (each head will have one)
*Acute Count Limit Multiplier may not be visible on some older model CAMS.
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Figure 1 – Access Flow Chart