ML20066F642

RO 82-138:on 821109,momentary Loss of Power to Feedwater Control Sys Experienced.Reactor Tripped & ECCS Initiated.Ler Expected by 821123 & Special Rept Per Limiting Condition for Operation Expected by 830208

ML20066F642
Person / Time
Site:	San Onofre
Issue date:	11/10/1982
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
RO-82-138, NUDOCS 8211190108
Download: ML20066F642 (1)

Text

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, Southern California Edison Ccmpany ,5CE g s AN ONOFRE NUC LE AR GENER A TING ST A TION

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S A N C L EME N TE. C # LIF ORNI A ,2,72 H. 8. R A Y tetrewoma

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• November 10, 1982 m ai a>=

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k U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement - k~

Region V 9 1450 Maria Lane, Suite 210 - -

Walnut Creek, California 94596-5368 $

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Attentfori: Mr. R. H. Engelken, Regional Administrator i u. '

Subject:

Docket No. 50-361 Prompt Report l Licensee Event Report No.82-138

• San Onofre Nuclear Generating Station, Unit 2 Pursuant to Appendix A Technical Specification 6.9.1.12g to Operating License NPF-10 for San Onofre Unit 2, this submittal provides the required written confirmation of our prompt notification to the NRC on November 9,1982 of a reportable occurrence involving a manual trip of the reactor and initiat' ion of the Emergency Core Cooling System (ECCS).

Section 6.9.1.12g requires that conditions arising from natural or man-made events that, as a direct result of the event require unit shutdown, operation of safety systems, or other protective measures required by Technical Specifications, shall be reported within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> with a written follow-up report within 14 days.

On November 9,1982 while in Mode 1, momentary loss of power to the Feedwater Control System was experienced. As a precaution, the reactor was manually tripped and the ECCS was automatically initiated during the resulting cooldown.

A 14-day followup report with a copy of Licensee Event Report (LER)82-138 will be submitted before November 23, 1982. A special Report per Limiting Condition for Operation (LCO) 3.5.2 will be submitted before

l. February 8,1983.

If there are any questions, please contact me.

Sincerely, 146f q / p u %

8211190108 8211 to PDR ADOCK 05000361 S PDR cc: A. E. Chaffee (USNRC Resident Inspector, San Onofre Unit 2) 6'& 397