05000272/LER-1981-103, Forwards LER 81-103/03L-0.Detailed Event Analysis Encl

Forwards LER 81-103/03L-0.Detailed Event Analysis Encl

ML20033B514
Person / Time
Site:	Salem
Issue date:	11/18/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20033B515	List: 05000272/LER-1981-103, Forwards LER 81-103/03L-0.Detailed Event Analysis Encl 05000272/LER-1981-103-03, /03L-0:on 811025,intermediate Detector N-36 Failed.Caused by Failure of Detector High Voltage Power Supply.Power Supply Replaced
References
NUDOCS 8112010484
Download: ML20033B514 (3)

LER-1981-103, Forwards LER 81-103/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721981103R00 - NRC Website

text

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O PSEG Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New Jersey 08038 Salem Generating Station November 18, 1981

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Mr.

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631 Park Avenue

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N King of Prussia, Pennsylvania 19406 q,.

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Dear Mr. Haynes:

LICENSE NO. DPR-70 I

DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-103/03L Pursuant to the requirements of Salem Generating Station Unit No. 1, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable occurrence 81-103/02L.

This report is required within thirty (30) days of the occurrence.

Sincerely yours, l

H. J. Midura General Manager -

Salem Operations i

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Report Number:

81-103/03L Report Date:

11-18-81 Occurrence Date:

10-25-81 Facility:

Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge,-New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Intermediate Range Detector - Inoperable.

This report was initiated by Incident Report 81-423.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 98% - Unit Load 1040 MWe DESCRIPTION OF OCCURRENCE:

At 1710 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.50655e-4 months <br />, October 25, 1981, the Control Operator noticed that the Intermediate Range Detector N-36 had failed.

The level trip switch for this channel was placed in the bypass position, and Action Statement 3.3.1.3.c was entered.

This occurrence constituted operation in a degraded mode in accordance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The cause was a failure of the detector high voltage power supply.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.3.1.3.c requires:

With the number of channels operable one less than required by the minimum channels operable require-ment and with the thermal power level above 5% of rated thermal power, power operation may continue.

CORRECTIVE ACTION

High voltage power supply was replaced and tested satisfactorily, and at 2115 hours0.0245 days <br />0.588 hours <br />0.0035 weeks <br />8.047575e-4 months <br />, October 27, 1981, Action Statement 3.3.1.3.c was terminated.

LER 81-103/03L -

FAILURE DATA:

Westinghouse High Voltage Power Supply Model No. 910057-54 Prepared By K. Whitcomb

/ *W' V

General" Manager -

Salem Operations SORC Meeting No.

81-119B k