ML13333A603

Forwards Safety Evaluation Accepting Util 871016 Single Failures Analysis for Esf,Per 871009 Meeting.Justification for Interim Plant Operation Acceptable Until 871214,pending Further Analysis

ML13333A603
Person / Time
Site:	San Onofre
Issue date:	12/02/1987
From:	Rood H Office of Nuclear Reactor Regulation
To:	Baskin K Southern California Edison Co
Shared Package
ML13333A605	List: ML13333A603 ML13333A608
References
TAC-65149, TAC-66405 NUDOCS 8712090273
Download: ML13333A603 (2)

Text

December 2, 1987 DOCKET NO. 50-206 Mr. Kenneth P. Baskin, Vice President Southern California Edison Company 2244 Walnut Grove Avenue P. 0. Box 800 Rosemead, California 91770

SUBJECT:

SAN ONOFRE 1:

SAFETY EVALUATION FOR ENGINEERED SAFETY FEATURES SINGLE FAILURE ANALYSIS (TAC NO. 65149)

Dear Mr. Baskin:

During our meeting on October 9, 1987, SCE identified single electrical failure scenarios, each of which could prevent the Engineered Safety Features (EFS) performing their designed safety function required during postulated design basis transients and accidents. In this meeting, you described corrective actions being taken to ensure continued single failure scenarios.

By your letter dated October 16, 1987, you submitted, for staff review, the single failure analysis of the ESF presented during the meeting. The NRC staff has completed its reviews and has concluded that your justification for interim plant operation is acceptable. Please note that this acceptance is valid only until December 14, 1987. Further analysis is required to justify operation beyond this date.

The staff's Safety Evaluation enclosed. If you have questions, please contact me.

Sincerely, Harry Rood, Senior Project Manager Project Directorate V Division of Reactor Projects - III, 8712090273 71202 7IV, V and Special Projects PDR ADOCK 05000206 P

PDR DISTRIBUTION Docket File PDV Reading NRC & Local PDRs HRood GWKnighton OLee DEC--:DR P/PDV

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Gpighton DATE :12/ \\ /87

12/2-/87

12/1-/87 OFFICIAL RECORD COPY

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 Boulevard, Suite 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. 0. Box 1831 Governor's Office of Emergency Svcs.

San Diego, California 92112 State of California 2800 Meadowview Road Sacramento, CA 95832 Resident Inspector/San Onofre NPS c/o U.S. NRC P. 0. Box 4329 San Clemente, California 92672 Mayor City of San Clemente San Clemente, California 92672 Chairman Board of Supervisors County of San Diego San Diego, California 92101 Director Energy Facilities Siting Division Energy Resources Conservation &

Development Commission 1516 -

9th Street Sacramento, California 95814 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane Walnut Creek, California 94596