ML19290E809

Denies Request for Shutdown Extension Until 800315 to Complete Category a Requirements W/Available Equipment. Reopening of Containment Isolation Valves Until Further Mods Completed Acceptable

ML19290E809
Person / Time
Site:	San Onofre, Haddam Neck
Issue date:	02/01/1980
From:	Harold Denton Office of Nuclear Reactor Regulation
To:	Dietch R SOUTHERN CALIFORNIA EDISON CO.
Shared Package
ML19290E795	List: ML19290E793 ML19290E798 ML19290E807 ML19290E809
References
TAC-44128, NUDOCS 8003170053
Download: ML19290E809 (3)

Text

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1. pa aeoug(o UNITED STATES E

NUCLEAR REGULATORY COMMISSION g

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WASHINGTON, D. C 20555 February 1, 1980 m

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0g560 Docket No. 50-206 g D coaAESPO.\\n +.

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-3 Mr. R. Dietch M

Vice President 9

y Nuclear Engineering and Operations Southern California Edison Company N

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ost Office Box 800 Rosemead, California 91770

Dear Mr. Dietch:

On January 2,1980, you were issued an Order to Show Cause why you should not by January 31, 1980, implement all " Category A" Lessons Learned Requirements or shut down San Onofre unless a shutdown would severly impact the power reliability in the Pacific Northwest.

In response to the Order you requested, on the basis of power reliability, an extension tc March 15, 1980, for itens requiring a shutdown and for which equipment is available.

You also requested an extension to complete certain modifications to the containment isolation systen (2.1.4 of NUREG-0578) based on equipment availability problems.

On the basis of our discussions with DOE, we cannot conclude, on the basis of power reliability, that there is adequate justification to extend the January 31, 1980 date to March 15, 1980.

You were t,,' raised of our position and agreed to shut down San Onofre prior to January 31, 1980 to complete those itens for which equipment is available.

Although your modifications to be completed during the January 1980 outage will preclude, containment isolation valve reopening upon reset of the con-tainment isolation signal, subsequent reopening of the valves will not be on an individual valve basis. You have stated that equipment recessary to accomplish this may include new electrical contairrnent penetrations and will be detennined by an engineering review to be completed by March 17'.1980.

In your letter of January 29, 1980, you stated that until these modifications for the containment isolation valves are complete you will modify the San Onofre procedures to require that the Plant Manager or his designee (if significant efforts fail to contact the Plant Manager) must authorize the reopening of containment isolation valves.

B003 QN s003170

e 2-February 1,1980 h

Mi. R. Dietch Based on our review of your submittals we have concluded that the high level of management attention placed on the reopening of contrinment isolation valves, during the period until further modifications are i

completed, is acceptable in implenenting that requirement of item sj 2.1.4.

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As indicated in our letter dated October 30, 1979, the acceptability I

of your implementation of each Category A item (excluding 2.1.7.a) s will be the subject of post implementr. tion review.

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Sincerely, 3

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Harold R. Denton, Director Office of Nuclear Reactor Regulation j

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cc: See next page

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3-February 1, 1980 Mr. R. Dietch CC Charles R. Kocher, Assistant Director, Technical Assessment General Counsel Division Southern California Edison Company Office of Radiation Programs Post Office Box 800 (AW-459)

Rosemead, California 91770 U. S. Environmental Protection Agency David R. Pigott Crystal Mall #2 Samuel B. Casey Arlington, Vi rginia 20460 Chickering & Gregory Three Embarcadero Center U. S. Environmental Protection Twenty-Third Floor Agency San Francisco, California 94111 Region IX Office ATTN:

EIS COORDINATOR Jack E. Thomas 215 Freemont Street Harry B. Stoehr San Francisco, California 94111 San Diego Gas & Electric Company P. O. Box 1831 San Diego, California 92112 Resident Inspector

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c/o V. S. NRC P. O. Box 3550

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San Onofre, California 92672 Mission Viejo Branch Library 24851 Chrisanta Drive Mission Viejo, California 92676 Mayor City of San Clemente San Clemente, California 92672 Chai rma n Board of Supervisors County of San Diego San Diego, California 92101 California Department of Health ATTN: Chief, Environmental Radiation Control Unit Radiological Health Section 714 P Street, Room 498 Sacranento, California 95B14

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