ML20039C154

Forwards LER 81-123/03L-0.Detailed Event Analysis Encl

ML20039C154
Person / Time
Site:	Salem
Issue date:	12/16/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20039C155	List: ML20039C154 ML20039C156
References
NUDOCS 8112280507
Download: ML20039C154 (3)

Text

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' ' O PSEG Pubbc Se vice Electric and Gas Company P.O Box #108 Hane.otks Bndge, New Jersey 09038 December 16, 1981 677 Mr. R. C. Haynes g Director of USNRC fp E'IC E O I Office of Inspection and Enforcement y'- 40' Region 1 631 Park Avenue p DEC 241981> [

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Dear Mr. Haynes:

T;,b LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-123/03L Pursuant to the requirements of Salem Generating Station Unit No. 2, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 81-123/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, i \ t ,b Cl u J H. . Midura General Manager -

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Report Number: 81-123/03L Report Date: 12-16-61 Cccurrence Date: 11-19-81 s

-Facili.ty: Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

2A Safeguards Equipment Cabinet - Inoperable.

This response was initiated by Incident Report 81-471.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - dx Power 94% - Unit Load 1071 MWe f

DESCRIPTION OF OCCURRENCE:

On November 19, 1981, after the satisfactory performance of the M3B sur'veillance test, the 2A Safeguards Equipment Cabinet (SEC)

'would not acknowledge being reset. The M3B surveillance was performed a second time satisfactorily. Upon the attempt to reset,the 2A SEC, 2A vitel' bus tripped, stripping the bus of i ts loads. At 1154 hours0.0134 days <br />0.321 hours <br />0.00191 weeks <br />4.39097e-4 months <br /> 2A'SEC was declared operable and Action Statement 3. 3. 2 Action 13 was entered.

Th2s occurrence constituted operation in a degraded mode in a,ccordance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

2A SEC did not reset due to the failure of the SK6 input reset relay. <

ANALYSIS OF OCCURRENCE:

Technical Specification 3.3.2 Action 13 requires:

With the number of operable channeln one less than

'the total number of channels, be in at least hot standby

_.. within,6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the following c 30 hour3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />sj~hower one channel may be bypassed for up to U lj two ' hours for sum . aillance testing per specification i (, F , '

/ 4.3.2.1 provided the other channel is operable.

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LER 81-123/03L CORRECTIVE ACTION:

The SK6 input reset relay was replaced. 2A SEC reset and tested satisfactorily. At 1456 hours0.0169 days <br />0.404 hours <br />0.00241 weeks <br />5.54008e-4 months <br />, November 19, 1981 2A SEC was de-clared operable and Action Statement 3.3.2 Action 13 was terminated.

During the time period 2A SEC was declared inoperable, the plant was adequately protected by 2B and 2C SEC.

FAILURE DATA:

C.O. Clare Co.

Relay No. GP3R221-AD1000 Prepared By F. Dickey /c/ h 1 EW GeneraY Mandger -

Salem Operations SORC Meeting No.81-127 4

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