ML20049H191

Forwards LER 81-092/01T-0.Detailed Event Analysis Encl

ML20049H191
Person / Time
Site:	Salem
Issue date:	11/02/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20049H193	List: 05000272/LER-1981-092 ML20049H191
References
IEB-80-24, NUDOCS 8111110776
Download: ML20049H191 (2)

Text

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' Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New Jersey 08038 Salem Generating Station S

h*.LUA, IE Eq FILE C05.

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• November 2, 1981 ' Dge k

' N'i]Tgf l Mr. R. C. Haynes Director of USNRC Office of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-92/0lT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.8.c, we are submitting Licensee Event Report for Reportable Occurrence 81-92/0lT. This report is required within fourteen (14) days of the occurrence.

Sincerely yours, ll Jcf "J H. J. Midura General Manager -

Salem Operations CC: Distribution ,

l oY P t V M Ohddd.h.2 The Energy People

• $S 9sve9 num n eo l fl

. \ ! Lj Report Number:

81-92/0lT Report Date: 11-2-81 Occurrence Date: 10-20-81 Facility: Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey .08038 IDENTIFICAT1_ON OF OCCURRENCE:

Containment Fan Coil Unit - Service Water Leak.

This report was initiated by Incident Report 81-415.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 62% - Unit Load 530 MWe DESCRIPTION OF OCCURRENCE:

On October 20, 1981, during a routine containment inspection, an operator discovered service water leaking from the third from top secondary coil on No. 15 Containment Fan Coil Unit (CFCU). In accordance with NRC IE Bulletin 80-24, the NRC was notified of the service water leak in containment by telephone, with written confirmation transmitted within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. No. 15 CFCU was declared inoperable and Action Statement 3.6.2.3.a was entered at 1545 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.878725e-4 months <br />, October 20, 1981.

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

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Equipment failure. The service water leak was due to a leak in the secondary cooling coil, third from top, on No. 15 CFCU.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.6.2.3.a requires:

With one group of containment cooling fans inoperable and both Containment Spray Systems operable, restore the inop-erable group of fans to operable status within 7 days or be in hot standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shut-down within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

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_ LER 81-92/0lT.

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P CORRECTIVE ACTION:

The third from top secondary coil on No. 15 CFCU was isolated from-the remainder of the coils by installing a blank flange insert between the service water inlet and outlet flanges.

• As per engineering analysis, it is possible to isolate an

-individual cooler in this manner while retaining acceptable  ;

. efficiency of the cooler. This cooler will be replaced during a future outage; howevor, no supplementary report-will be ,

issued. No. 15 CFCU was tested satisfactorily and returned '

to service. Action Statement 3.6.2.3.a was terminated at ,

1430' hours, October 21, 1981.

FAILURE DATA:

Westinghouse Coil Cooler  !

Spin No. RCMECF i

• Prepared By F. Dickey h* YI General Manager - '

! Salem Operations SORC Meeting No.81-113 i i

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