ML20073E936

Corrects Info Provided in Response to IE Bulletin 83-01 Submitted on 830308.Deficiencies Found Following Review of Preventative Maint Program Will Be Corrected by New Procedures Incorporating IE Bulletin 79-09 & Vendor Inputs

ML20073E936
Person / Time
Site:	San Onofre
Issue date:	03/30/1983
From:	Baskin K SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
REF-SSINS-6820 IEB-79-09, IEB-83-01, NUDOCS 8304150393
Download: ML20073E936 (2)

Text

Docket No. 50-361/362

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Bulletin Reply 83-01 ECEwee f'T Southem Califomia Edison Company gE P.O. BOX 800 [1,

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2 2 44 W ALN UT GROVE AVENUE ROSEMEAD. C ALIFORNI A 91770 K. P. B ASKIN Ikbb,' y #

TELEPHONE

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March 30, 1983 m u mm U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention: Mr. R. H. Engelken, Regional Administrator

Subject:

Docket Nos. 50-361 and 50-362 Response to IE Bulletin No. 83-01 San Onofre Nuclear Generating Station, Units 2 & 3

Reference:

1) Letter, R. Dietch (SCE) to R. H. Engelken (NRC), Response to IE Bulletin No. 83-01, dated March 8, 1983 l 2) Letter, H. B. Ray (SCE) to R. H. Engelken l (NRC), Reply to Confirmatory Action Letter, i dated March 22, 1983 This letter provides a correction of information presented in Reference 1, which was submitted in response to IE Bulletin No. 83-01.

In Reference 1, we indicated that preventive maintenance is performed in accordance with Item 3 of IE Bulletin No. 79-09, l Failures of GE Type AK-2 Circuit Breakers in Safety-Related j Systems, to assure breaker design performance. However, as discussed with you in a meeting on March 18 in your office, a detailed review of the preventive maintenance program for the reactor trip switchgear has iound a number of deficiencies in

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that program with regard to conformance with Item 3 of IE Bulletin No. 79-09.

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. Mr. R. H. Engelken March 30, 1983 These deficiencies will be corrected by the preparation of a new procedure which incorporates the provisions of IE Bulletin 79-09, the vendor manual, and other inputs from the vendor.

Maintenance in accordance with this new procedure will be performed on all Units 2 and 3 reactor trip circuit breakers prior to their respective Mode 2 entry.

i Additional information concerning our preventive maintenance program will be submitted separately. As discussed in Reference 2, neither Unit will enter Mode 2 until advised by your office that the matter involving the reactor trip breakers is resolved.

Subscribed on this JdM day of },1f,M , 1983.

4 Respectfully submitted, I

SOUTHERN CALIFORNIA EDISON COMPANY By:

K. P. Baskin Manager of Nuclear Engineering, Safety, and Licensing Subscribed and sworn to before me this JdM day of 27 m L /9/3 .

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