ML19224B137
| ML19224B137 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/06/1978 |
| From: | Metropolitan Edison Co |
| To: | Mullinix W NRC/IE |
| References | |
| 1606, TM-0075, TM-75, NUDOCS 7906140094 | |
| Download: ML19224B137 (3) | |
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DOCU!ENT NO:
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COPY MADE ON OF DOCUMENT PROVIDED BY I
METROPOLITAN EDISON COMPANY.
Wilda R. Mullinix, NRC 188 246 7906140094 e
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1606 I
Rcsision 4
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THREE MILE ISLAND NUCLEAR STATION STATION HEALTH PHYSICS PROCEDURE #1606 AIR SAMPLING FOR RADI0 ACTIVE IODINE C'
Table of Effective Pages
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[g Page Date Revision Page Date Revision Page Date R evision 1.0 04/06/78 4
26.0 51.0 2.0 04/06/78 4
27.0 52.0 3.0 28.0 53.0 4.0 29.0 54.0 5.0 30.0 55.0 6.0 31.0 56.0 7.0 32.0 57.0 8.0 33.0 58.0 9.0 34.0 59.0 10.0 35.0 60.0 11.0 36.0 61.0 12.0 37.0 62.0 13.0 38.0 63.0 14.0 39.0 64.0 15.0 40.0 65.0 16.0 41 n 66.0 17.0
- z.u 87.0 18.0 43.0 68.0 19.0 44.0 69.0 20.0 45.0 70.0 21.0 46.0 71.0 22.0 47.0 72.0 23.0 48.0 73.0 24.0 49.0 74.0 25.0 50.0 75.0 Unit 1 Staff Recom end A proval Unit 2 Staff Reco mend
] proval Date Approval Date Approval
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Cogniz/nt bfptf Hebd CognfzantD;d. Head Unit 1 PORC Recopmends pproval Unit - OCR mmends Approval 3be Date Y M i Date Chairrnan of PORC
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Unit 1 Superintendent Approval Unit 2 Superintendent Approval V$b[
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Manager Generation Quality Assurance Approval Date T M1 55-A R ow 8/7 7
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1606 Revision 4 04/06/78 i
THREE MILE ISLAND NUCLEAR STATION STATION HEALTH PHYSICS PROCEDURE - 1606 Air Samplino for Radioactive Iodine 1.0 PURPOSE The purpose of this procedure is to outline the steps to be taken for sampling for Airborne Radioactive Iodine.
2.0 DISCUSSION Iodine has a vapor pressure that will allow it to vaporize at room temperature; therefore, it cannot be held on a plain filter paper with any type of reproducible efficiency.
The technique for monitoring iodine is to use a medium t.lat will react with the iodine to convert it to a form that will hold it.
The simplest technique is to trap the iodine using activated charcoal.
NOTE:
The maximum flow rates through the charcoal cartridges are as follows:
CESCO "B" - 2 cfm CP-100 - 9 cfm
3.0 REFERENCES
3.1 Title 10, Part 20, Code of Federal Regulations.
3.2 Radiological Health Handbook,1970.
3.3 P.C.P. 1958.
4.0 EQUIPMENT 4.1 Air Sampling Instrument 4.2 Charcoal Cartridges - (CESCO "B", CP-100 or equivalent)
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4.3 GeLi/ Multi-Channel Analyzer System (MCA).
4.4 Stop Watch.
188 248 p
pr 1.0
1606 Revision 4 04/06/78 4.5 Particulate filter, G-5 or equivalent.
5.0 OPERATING INSTRUCTIONS The results of the calculation for air samples are reported in uCi/cc.
The conversion from ft3 to cc is as follows:
(cu ft/ min) (cc/l cu ft) = cc/ min (cc// min)
(time counted) = cc which will be the volume 4
2.832 x 10 is a constant for changing cubic ft to cc 5.1 Air Sampler 5.1.1 Place a particulate filter and a charcoal cartridge in the air sampler.
NOTE:
Place the particulate filter ahead of the charcoal cartridge.
5.1.2 Start the air sampler and stop watch (if needed).
NOTE:
For routing sample, run sampler long enough to get
$ 4x106 cc sample volume.
5.1.3.
When the cartridge is removed, it will be marked as to location, sample time, date, and volume.
NOTE:
To calculate volume, multiply flow rate times time.
Volume should be in cubic centimeters (cc).
5.1.4 Take the cartridge to the H.P. Lab and count, calculate, and record results as per PCP 1958.
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188 249 2.0
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