05000272/LER-1981-078, Forwards LER 81-078/01T-0.Detailed Event Analysis Encl

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Forwards LER 81-078/01T-0.Detailed Event Analysis Encl
ML20010G860
Person / Time
Site: Salem PSEG icon.png
Issue date: 09/14/1981
From: Midura H
Public Service Enterprise Group
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010G861 List:
References
NUDOCS 8109220599
Download: ML20010G860 (3)
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LER-1981-078, Forwards LER 81-078/01T-0.Detailed Event Analysis Encl
Event date:
Report date:
2721981078R00 - NRC Website
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O PSEG Public Service Electric and Gas Company P O. Box 168 Hancocks Bridge, New Jersey 08038 Salem Generating Station September 14, 1981 c5

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F-7 Mr.

R. C. Haynes c,.

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Director of USNRC N

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Office'of Inspection and Enforcement Region 1 N,/,

631 Park Avenue

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King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-78/OlT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9.b, we are submitting Licensen Event Report for Reportable Occurrence 81-78/0lT.

This report is required within fourteen (14) days of the occurrence.

Sincerely yours, N~a

V L

H. J. Midura Manager - Salem Generating Station CC:

R. A. Uderitz General Man ager - Nuclear Production Director, Offloa of Inspection and Enforcement (40 copies) 6N Director, Office of Management g

Information and Program Control (3 copies)

//

8109220599 810914 9s2ia9 i2.eui tico PDR ADOCK 05000272 S

PDR

Report Number:

81-78/OlT Report Date:

9-14-81 Occurrence Date:

9-3-81 Facility:

Salem Generating Station, Unit 1 Public Service Electric & Gas Company.

Hancocks Bridge,' New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Containment Fan Coil Unit

. Service Water Leak.

This report was initiated-by Incident Report 81-364.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 96% - Unit Load 1000 MWe DESCRIPTION OF OCCURRENCE:

On September 3, 1981, during a surveillance test, an operator discovered service water leaking from the top secondary coil on No. 11 containment fan coil unit (CFCU), at'a rate of approximately 0.5 gallons per minute.

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..ll'CFCU was declared inoperable and. action statement 3.6.2.3.a was entered at.2036 hours0.0236 days <br />0.566 hours <br />0.00337 weeks <br />7.74698e-4 months <br />, September 3, 1981.

This occurrence constituted operation in a degraded mode in' accord-ance with technical specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Equipment failure.

The service water leak was due to a pinhole leak in the top secondary cooling coil on No. 11 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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7 LER 81-78/OlT i

CORRECTIVE ACTION

The secondary coil on No. 11 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 the next scheduled outage; however, no supplementary report will be issued.

No. 11 CFCU was tested satisfactorily and returned to service.

Action statement 3.6.2.3.a was terminated at 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br />, September

.4, 1981.

FAILURE DATA:

Westinghouse coil Cooler Spin No. RCMECF Prepared By F.

Dickey cS Mafager - Salem Generating Station SORC Meeting No.

81-90

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