ML20248E567

Informs Util of NRC Approval of Rev to Basis of Tech Spec 4.12 to Include Sentence Which Excludes Sealed Sources within Radiation Monitors from Testing Requirements Unless Removed from Shielded Mechanism

ML20248E567
Person / Time
Site:	San Onofre
Issue date:	12/03/1987
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Baskin K SOUTHERN CALIFORNIA EDISON CO.
References
TAC-8047, NUDOCS 8910050293
Download: ML20248E567 (3)

Text

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.'. O December 3, 1987

% I DOCKET NO. 50-266 Mr. Kenneth P. Baskin, Vice President I Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770 1

l

SUBJECT:

SAN ON0FRE 1: SURVEILLANCE OF SEALED SOURCES i 1

REFERENCE:

LETTER: MEDF0PD, SCE, TO USNRC - DATED OCTOBER 16, 1987, i SAME SUEJECT i

Dear Mr. Easkin:

l Your request for approval of a revision to the Basis for Technical Specification 4.12, Miscellanccus Radioactive Material Sources, is hereby I granted. The revised Basis, enclosed, now includes a sentence from the 1

Standard 'lechnical Specifications which excludes sealed sources within i radiation monitors from testing requirements unless they are removed from 1

their shielded mechanism, if you have questions concerning this revision, please contact Harry Rood (301 - 492-8057). '

Sincerely, or$ cinni ri--M W i c o rr e V;. "'i~?'03 George W. Knighton, Director'  !

Project Directorate V 8910050293B7120$06 Division of Reactor Projects - III, PDR ADOCK 050 DR IV, Y and Special Projects l P

Enclosure:

As Stated cc: See attached '

DISTRIBUTION Docket File GPHolahan JLee NRC & Local PDRs PDV Reading GKnighton HRood D, PDV DRSh/PDV D :PDV JL .

HR00D C 12 TON

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_ _ _ _ _ . _ _ _ . _ _ . _ _ . . _ _ _ _ . . _ . . _ _ _ _ _ . .___m. AA__ ____ __.__..__m.__._m _.._.__________..m.- . - _ _ .

l Mr. Kenneth P. Baskin San Onofre Nuclear Generating Southern California Edison Company Station, Unit No. 1 CC Charles R. Kocher, Assistant Mr. Joseph 0. Ward, Chief General Counsel Radiological Health Branch James Beoletto, Esquire State Department of Health Southern California Edison Company Services Post Office Box 800 714 P Street, Office Bldg. 8 Rosemead, California 91770 Sacramento, California 95814 David R. Pigott Mr. Hans Kaspar, Executive Director Orrick, Herrington & Sutcliffe Marine Review Committee, Inc.

600 Montgomery Street 531 Encinitas Bouleverd, Scite 105 San Francisco, California 94111 Encinitas, California 92024 Mr. Stephen B. Allman Dennis M. Smith, Chief San Diego Gas & Electric Company Radiological Programs Division P. O. Box 1831 Governor's Office of Emergency Svcs. -

San Diego, California 92112 State of California 2800 Meadowview Road Sacremento, CA 95832 l

kesident Inspector / San Onofre NPS c/o U.S. NRC P. O. Box 4329 San Clemente, California 92672 Mayor City of San Clemente Sar, Clemente, California 9267T Chairman Board of Supervisors County of San Diego l San Diego, California 92101 t Director Energy Facilities Siting Division Energy Resources Conservation 8 Development Conrission 2516 - 9th Street '

Sacramento, California 95P.14 Regional Administ rator, Region V i U.S. Nuclear Regulttory Conmission i 1450 Maria Lane Valnut Creek, California 94596 l

o. . -.- -

3y,,,g, u 4.12 MISCELLANE0US RADI0 ACTIVE MATERIALS SOURCES APPLICABILITY: Applies to the leakage of radioactive source materials.

OBJECTIVE: To verify the physical integrity of portable and fixed radioactive calibration sources.

SPECIFICATION: A. Byproduct material sealed sources which exceed the quantities listed in 10 CFR 30.71. Schedule B, and all r

other sealed sources containing greater than 0.1

- -- nicrocuries shall be le~aR t'ested in accordance with" ~ ~ ~ ' ~

Specification B, C and D below.

Exception: Not withstanding the periodic leak test required by this specification, any licensed sealed source is exempt from such leak tests when the source contains 100 microcuries or less of beta and/or gamma emitting material or 10 microcuries or less of alpha emitting material. ,

B. Each sealed source containing radioactive material, other than Hydrogen 3, with a half life greater than thirty days and in any form other than gas, shall be tested for leakage and/or contamination prior to use out of storage and prior to transfer to another person and thereafter at m _.

intervals not to exceed six months. This test does not

_ ___. apply to seale_d sources that-are-stored and-not in.-use. _ . _ . .

C.

The leakage test shall be capable of detecting the presence of .005 microcuries of radioactive material.

The test sample shall be taken from the sealed source or ,

from the surfaces of the device in which the sealed source is permanently mounted or stored on which one

_ might expect contamination to accumulate. _ _ __. _ . - . - . .

D. If testing reveals the presence of .005 microcuries or more of removable contamination, it shall immediately be withdrawn from use, decontaminated, and repaired, or

- disposed of in accordance with applicable regulatory requirements and reported in the subsequent annual report filed pursuant to Specification 6.9.1.4.

BASIS:

This Specification assures that leakage from radioactive material sources does not exceed allowable total body or organ limits. In the unlikely event that those quantities of radioactive byproduct materials of interest to this Specification which are exempt from leakage testing are ingested or inhaled, they represent less than one maximum permissible body burden for total body irradiation. The limits for all other sources (including alpha emitters) are based upon 10 CFR 70.39 (c) limits for plutonium. Sealed sources which are continuously enclosed within a shielded mechanism (i.e. , sealed sources within radiation monitoring or boron measuring devices) are considered to be stored and need not be tested unless they are removed from the shielded mechanism.

4-81  !

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