ML20052E156

Advises That Acceptability of Control Dosimeter Procedure Will Not Hinder Ability to Monitor Environ Impact of Mill Operation

ML20052E156
Person / Time
Issue date:	03/31/1982
From:	Scarano R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:	Mooney R WASHINGTON, STATE OF
References
REF-WM-56 NUDOCS 8205100140
Download: ML20052E156 (2)

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HPettengill WM-56 (IN JLubenau RScarano Depar+.nent of Social and Health Services JLinehan ATTN: Mr. Robert R. Mooney DMartin 1409 Smith Tower, B17-9 RBrowning Seattle, Washington 98104 JMartin Gentlemen:

This letter is in response to your request for resolution of the matter between your office and Western Nuclear, Inc. (WNI) as identified in your letter to WNI dated December 8, 1981. Your contention, that the cosmic dose received by the control dosimeters in storage during the field-cycle should not be subtracted from the total dose of the field dosimeters, is technically correct and supportable by Appendix B of the subject ANSI standard.

For example, in the ANSI standard Appendix B there are two alternatives listed which would enable the determination of cosmic dose contribution during the field cycle. One alternative involves having a read-out capability at the field site and the second alternative is to use two sets of control dosimeters and to return one set to the vendor i

lab immediately upon receipt.

However, the staff's position on the use of control dosimeters for environmental applications generally agrees with the procedure being used by WNI and their vendor. This position is taken assuming that the field-cycle storage dose, when the control dosimeter is placed in a proper shield as WNI did, is predominantly cosmic in origin and is relatively small and constant. The staff believes that subtraction of the small cosmic dose received during the field cycle would not hinder ones ability to monitor the environmental impact of the mill.

Our position on the acceptability of WNI's control dosimeter precedure does not constitute an NRC decision on the issue betweer the Department of Social and Health Services and Western Nuclear, Inc.

Rather, it DIST:

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Sincerely, ORIGlN AL.51GNED BY Ross A. Scarano, Chief Uranium Recovery Licensing Branch Division of llaste Management cc:

G. Bogden, WNI Case Closed: 330000560105 DIST:

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