05000272/LER-1981-076, Forwards LER 81-076/01T-0.Detailed Event Analysis Encl

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Forwards LER 81-076/01T-0.Detailed Event Analysis Encl
ML20010G851
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
ML20010G852 List:
References
NUDOCS 8109220589
Download: ML20010G851 (3)
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LER-1981-076, Forwards LER 81-076/01T-0.Detailed Event Analysis Encl
Event date:
Report date:
2721981076R00 - NRC Website
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LES O PSEG Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New Jersey 080 38 Salem Generating Station September 14, 1981 A

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Mr. R. C.

Haynes

'p Director of USNRC W3 Office of Inspection and Enforcement

@# hC Region 1

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'2 631 Park Avenue

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4',W King of Prussia, Pennsylvania 19406

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Dear Mr. Haynes:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-76/0lT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9.h, we are submitting Licensee Event Report for Reportable Occurrence 81-76/0lT.

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

Sincerely yours, n M' H.

J. Midura Manager - Salem Generating Station CC:

R. A.

Uderitz p1 General Manager - Nuclear Production Director, Office of Inspection 5

and Enforcement (40 copies)

Director, Office of Management

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Information and Program Control (3 copies) l 8109220589 810914 PDR ADOCK 05000272 9s2te9 02m na S

PDR

Report Number:

81-76/0lT Report Date:

9-14-81 Occurrence Date:

9-2-81 Facility:

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

Containment Fan Coil Unit - Service Water Leak.

This report was initiated by Incident Report 81-359.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power ' T - Unit Load 930 MWe DESCRIPTION OF OCCURRENCE:

On September 2, 1981, during a routine containment inspection, an operator d'iscovered service water leaking from the secondary cooling coil, second from the bottom, on No. 14 containment fan coil unit (CFCU), at a rate of approximately 1 gallon 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' hours.

No. 14 CFCU was declared inoperable and action statement 3.6.2.3.a was entered at 1935 hours0.0224 days <br />0.538 hours <br />0.0032 weeks <br />7.362675e-4 months <br />, September 2, 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 pinhole leak in the second from the bottom secondary coil on No. 14 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 />.

LER 81-76/0lT,,

CORRECTIVE ACTION

The second from the bottom secondary coil on No. 14 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. 14 CFCU was tested satisfactorily and returned to service.

Action statement 3.6.2.3.a was terminated at 1930 hours0.0223 days <br />0.536 hours <br />0.00319 weeks <br />7.34365e-4 months <br />, September 3, 1981.

FAILURE DATA:

Westinghouse Coil Cooler Spin No. RCMECF Prepared By F. Dickey Man 44er - Salem 7 Generating Station SORC Meeting No.

81-90

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