ML20031F406
| ML20031F406 | |
| Person / Time | |
|---|---|
| Site: | Westinghouse |
| Issue date: | 09/22/1981 |
| From: | Reitler E WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | Crow W NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 19737, NUDOCS 8110190776 | |
| Download: ML20031F406 (3) | |
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SURIECT: Request for Unconditional Release of Deionized Wat r Tan S 21-1107, Docket 70-1151 Ee 2.in 8
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n1 Westinghouse Electric Corporation hereby subnits informatioR and @ rc@arding four deionized water tanks which have been prepared for reWase for-unrestricted use in accordance with Annex C of SNM-1107. The four tanks? of ag$oxinutely 500 gallons each, were formerly used to store deionized water endTJere located in the Controlled Area, in a separate roan adjacent to the UF6 Bay of the Columbia Plant. The tanks have not been subjected to a contaminated environment except for the fact that they were located in a Contamination Controlled Area.
Survey results indicate that surface contamination and radiation levels are well below acceptable levels as defined in Annex C, Table I of SNM-1107. Consequently, Westinghouse plans to release the tanks for unrestricted use on or after October 22, 1981. Attached is additional infonnation concerning the scope of the surveys and findings.
If you have any questions regarding this matter, please write to me or telephone me on 803 776-2610.
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Oa E. K. Reitler Fellow Engineer
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ENCLOSURE 'IO TRANSMITTAL OF SEPTEMBER 22, 1981 SNM-1107, DOCKER 70-1151 DEIONIZED WATER TANKS SURVEILINCE REPORP IDENTIFICATICN The cquipent consists of four tanks which were used in the Contamination Con-trolled Area of the Columbia Plant for storage of deionized water. The tanks have not been subjected to a contaminated environmex except for the fact that they were located in a Contaminaticn Controlled Area.
DECONTAMINATION TECIINIQUE
'1he tanks required minimal decontamination since they were never used for the storage of contaminated materials.
SURVEIIIANCE PROCEDURE AND RESULTS Surveys were performed for beta-gamma radiation and fixed and renovable alpha contamination on all surfaces of the tanks, both inside and outside. Beta-gannu measurements were performed with a calibrated Eberline E-120 ratemeter with a beta-ganma end window probe, of less than 7 milligrams per square centimeter of total absorber, on contact with the tanks'. surfaces. Fixed alpha measurements were per-formed with a calibrated Eberline PAC 4G with an AC-21 probe on contact with the tank surfaces. Removable alpha contamination was determined by wiping inside and outside tank surfaces with Whatman 41 filter, using moderate pressure, and counting these smears in a calibrated proportional counter.
Survey results are shown below:
Measurment Average Maximum Beta-Ganma 0.05 mr/hr 0.05 mr/hr 2
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2 Fixed Alpha 75 dpV100 m 150 dpn/100 ag 2
Re n ile Alpha 19 dpV100 m 91 dpV100 m Measurments were taken on representative areas of each tank, with emphasis on areas where contamination could accumulate, such as the tank interior bottms and flanges. All areas of the tanks were accessible to surveillance. The tanks had been previously painted, but there is no indicatic, of contamination beneath the paint as evidenced by a sampling of rusted areas.
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d 4 Mlf,C/5LL, 70 'U N Docket No.
William O. Miller, License Fee Management Branch, ADM MATERIALS LICENSE AMENDMENT CLASSIFICATION Applicant:
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License No:
<te o be7 Fee Category:
/B Application Dated:
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Received:
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Applicant's Classification.
The above application for amendment has been reviewed by NMSS in accordance with 5170.31 of Part 170, and is classified as follows:
1.
Safety and Environmental Amendments to Licenses in Fee Catecortes 1A throuch IH, 2A, 2B,~2C, and 4A (a)
Major safety and environmental (b)
Minor safety and environmental (c)
Safety and environmental (Categcries ID through 1G only)
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Administrative' 2
Justification for reclassification:
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The application was filed (a) pursuant to written NRC request and the amendment is being issued for the convenience of the Commission, or (b) c 1fther (State reason):
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Signature f.lJ
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Division of Fuel Cycle & Material Safety
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