table of contents page - energy.gov · sentry continuous air monitor (cam). 1.2 scope this...

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

http://idmsweb/idms/livelink.exe/Open/3494490


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

2 of 33

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


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

3 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

4 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

5 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

6 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

7 of 33

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)


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

8 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

9 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

10 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

11 of 33


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


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

12 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

13 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

14 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

15 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

16 of 33


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



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)


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

17 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

18 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

19 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

20 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

21 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

22 of 33

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



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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

23 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

24 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

25 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

26 of 33


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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

27 of 33

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”.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

28 of 33

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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

29 of 33

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


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

30 of 33

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


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

31 of 33


(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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

32 of 33


(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.


Type


6-RM-937 Rev/Mod

A-0 Release Date

09/17/2018 Page

33 of 33

Figure 1 – Access Flow Chart