05000272/LER-1981-100, Forwards LER 81-100/03L-0.Detailed Event Analysis Encl

Forwards LER 81-100/03L-0.Detailed Event Analysis Encl

ML20033B543
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
ML20033B544	List: 05000272/LER-1981-100, Forwards LER 81-100/03L-0.Detailed Event Analysis Encl 05000272/LER-1981-100-03, /03L-0:on 811019,during Startup Preparation, Neutron Level & Startup Rate Meters for Intermediate Range Nuclear Instrumentation Channel 1 Were Spiking from 0 to Full Scale.Caused by Failed Power Supply
References
NUDOCS 8112010507
Download: ML20033B543 (3)

LER-1981-100, Forwards LER 81-100/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721981100R00 - NRC Website

text

7

' O PSEG Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New.irsey 08038 Salem Generating Staticn November 18, 1981 4

i Mr.

R.

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Haynes Director of USNRC

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Region 1 Q

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I-631 Park Avenue

5 King of Prussia, Pennsylvania 19406 ;

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Dear Mr. Haynes:

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LICENSE NO. DPR-70 7

DOCKET NO. 50-272 s

REPORTABLE OCCURRENCE 81-100/03L 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 81-100/03L.

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

Sincerely yours, 4

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H. J. Midura General Manager -

4 Salem Operations CC:

Distribution 8112010507 811118

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[DRADOCK 05000272 PDR sil The Energy People ss2ies n.m neo

Report Number:

81-100/03L f

Report Date:

11-18-81 Occurrence Date:

10-19-81 i

f Facility:

Salem Generating' Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 1

IDENTIFICATION OF OCCURRENCE:

I Intermediate Range Nuclear Instrumentation -' Channel 1 -

Inoperable.

This report was initiated by Incident Report 81-414.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 3 - Rx Power 0% - Unit Load 0 MWe DESCRIPTION OF OCCURRENCE:

4 On October. 19, 1981, while preparing for a startup, with the trip breakers closed, the neutron level and startup rate meters for the Intermediate Range Nuclear Instrumentation, Channel 1, were observed spiking from 0 to full scale.

At 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> the channel was declared inoperable and Action Statement 3.3.1.1 Action 3a was entered.

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

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

l The cause of the spiking was a failed high-voltage power supply.

ANALYSIS OF OCCURRENCE:

1 l

Technical Specification 3.3.1.1 Action 3a requires:

With the number of. channels operable one less than i

required by the minimum channels operable require-ment and with the thermal power level below P-6, restore the inoperable channel to operable status prior to increasing thermal power above the P-6 setpoint.

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• LER 81-100/03L.

CURRECTIVE ACTION:

All cables and connectors were tested satisfactorily.

At 1153 hours0.0133 days <br />0.32 hours <br />0.00191 weeks <br />4.387165e-4 months <br />, October 19, 1981, the trip breakers were opened, and Action Statement 3.3.1.1 Action 3a was terminated.

Subsequently, the high-voltage power supply was replaced, properly calibrated, and tested satisfactorily.

FAILURE DATA:

Power Designs, Inc.

High-Voltage Power Supply Model UPMD-X54W Prepared By F.

Dickey e

Af-f General Manager -

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Salem Operations SORC Meeting No, 81-119B 9

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