ML20085H612

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RO 83-112:on 830826,6-month Surveillance Performed on Fire Detection Instrumentation Disclosed Heat Sensors 41 & 43 in Zones 12 & 42,respectively,less than Tech Spec Requirements. LERs Expected by 830912
ML20085H612
Person / Time
Site: San Onofre  Southern California Edison icon.png
Issue date: 08/29/1983
From: Ray H
SOUTHERN CALIFORNIA EDISON CO.
To: Martin J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
RO-83-112, NUDOCS 8309120167
Download: ML20085H612 (2)


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S AN ONOFRE NUCLE AR GENER A TING S T A TION P.G. B O X 148

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H. B. R AY TELEPHONE August 29, 1983

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U. S. Nuclear Regulatory Comission Office of Inspection and Enforcement Region V 1450 Maria Lane, suite 210 Walnut Creek, California 94596-5368 Attentico:

Mr. J. B. Martin, Regional Administrator

Dear Sir:

Subject:

Docket !bs. 50-361 and 50-762 Prompt Report Licensee Event Report No.83-112 (Docket !b. 50-261)

San Onofre !?aclear Generating Station, Units 2 and 3 Parsuant to the reporting requirements of Section 6.9.1.12.i of Appendix A, Technical Specifications to Facility Operating Licenses IEF-10 and IPF-15 for San Onofre Units 2 and 3, respectively, this submittal provides the written confirmation of our prompt notification to the NRC on August 26, 1983, of a reportable occurrence involving fire detection instrumentation.

%e 6-month routine surveillance performed in August 1983, disclosed 41 heat sensors in Zone 12 and 43 heat sensors in Zone 42. Technical Specification 3.3.3.7 requires 42 heat sensors in Zone 12 and 44 in Zone 42.

Since this occurrence involves shared systems between Units 2 and 3, in accordance with NURDG 0161, a single Licensee Event Report (LER) for Unit 2, LER !b.83-112 (Docket Ib. 50-361) will be submitted by September 12, 1983.

%is LER will include the results of the investigation of this occurrence and the corrective actions to prevent recurrence.

If you have any questions regarding this item, please so advise.

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Sincerely, t

l 8309120167 830829 I

PDR ADOCK 05000361 4

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Mr. J. B. Martin August 29, 1983 cc:

A. E. Chaffee (USNRC Resident Inspector, Units 2 and 3)

J. P. Stewart (USNRC Resident Inspector, Units 2 and 3) c 1471u

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