05000272/LER-1981-108, Forwards LER 81-108/01T-0.Detailed Event Analysis Encl

Forwards LER 81-108/01T-0.Detailed Event Analysis Encl

ML20039A816
Person / Time
Site:	Salem
Issue date:	12/09/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20039A817	List: 05000272/LER-1981-108, Forwards LER 81-108/01T-0.Detailed Event Analysis Encl 05000272/LER-1981-108-01, /01T-0:on 811124,svc Water Found Leaking from Third from Bottom Primary Coil on Containment Fan Coil Unit (Cfcu).Cfcu Declared Inoperable on 811125.Caused by Coil Failure.Coil Blank Flanged Off
References
NUDOCS 8112210328
Download: ML20039A816 (3)

LER-1981-108, Forwards LER 81-108/01T-0.Detailed Event Analysis Encl

Event date:
Report date:
2721981108R00 - NRC Website

text

-_

O PSEG Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New Jersey 08038

' Salem' Generating Station December 9, 1981

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Mr.

R.

C. Haynes Director of USNRC D

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Office of Inspection and Enforcement U[

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63. < ark Avenue I

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King of Prussia, Pennsylvania 19406

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Dear.Mr. Haynes:

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LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-108/OlT 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 Repottable Occurrence 81-108/OlT.

This report is required within fourteen T14) days of the occurrence.

Sincerely yours, ja/ f%ft H. J. Midura General Manager -

Salem Operations CC:

Distribution I

//

- The Energy People 9 >2te9 ti2 >n it eo 81 2210328 81 yD ADOCK 050 72 DR i

Report Number:

81-108/0lT Report Date:

12-9-81 Occurrence Date:

11-25-81 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 81-479.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 80% - Unit Load 820 MWe DESCRIPTION OF OCCURRENCE:

On November 24, 1981, during a routine containment inspection, an operator discovered service water leaking from the third froin bottom primary coil on No. 14 Containment Fan Coil Unit (CFCU).

The CFCU was isolated by closing the inlet and outlet valves from the control room, but remained operable-and capable of functioning adequately under emergency conditions.

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. 14 CFCU was declared inoperable and Action Statement 3.6.2.3.a.was entered at 0830 hours0.00961 days <br />0.231 hours <br />0.00137 weeks <br />3.15815e-4 months <br />, November 25, 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 primary cooling coil, third from bottom, 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 />.

I

'LER 81-108/0lT o

CORRECTIVE ACTION

The third from bottom primary 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 l

individual cooler in this manner while retaining acceptable efficiency of the cooler.

Replacement coolers are being received on site and are scheduled to be installed during the upcoming refueling 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 1840 hours0.0213 days <br />0.511 hours <br />0.00304 weeks <br />7.0012e-4 months <br />, November 27, 1981.

FAILURE DATA:

Westinghouse coil cooler Spin No. RCMECF Prepared By F.

Dickey

/

General' Manager -

Salem Operations SORC Meeting No.81-124 i