05000311/LER-1981-094, Forwards LER 81-094/01T-0.Detailed Event Analysis Encl

Forwards LER 81-094/01T-0.Detailed Event Analysis Encl

ML20031B838
Person / Time
Site:	Salem
Issue date:	09/28/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20031B839	List: 05000311/LER-1981-094, Forwards LER 81-094/01T-0.Detailed Event Analysis Encl 05000311/LER-1981-094-01, /01T-0:on 810918,during Routine Containment Insp, Operator Found Svc Water Leaking from Primary Coil on Containment Fan Coil 23 at Approx 0.5 Gpm.Caused by Primary Coil Failure.Cooling Coil Blank Flanged Off
References
NUDOCS 8110060136
Download: ML20031B838 (3)

LER-1981-094, Forwards LER 81-094/01T-0.Detailed Event Analysis Encl

Event date:
Report date:
3111981094R00 - NRC Website

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G PSEG Public Service Electric and Gas Cornpany P.O. Box 168 Hancocks BriJge, New Jersey 08038 Salem Generating Station September 28, 1981 p\\gN4

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Mr.

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Haynes i~,

Director of USNRC

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Office of Inspection and Enforcement Oc7

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Region 1 631 Park Avenue h Ma 78Sfg grg j King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-75 6h DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-94/0lT Pursuant to the requirements of Salem Generating Station Unit No.

2, Technical Specifications, Secticn 6.9.1.8.c, we are submitting Licensee Event Report for Reportable Occurrence 81-94/0lT.

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

i Sincerely yours, 4

y0ML, H.',J.Midura Manager - Salem Generating Station CC:

R. A. Uderitz General Manager

'Iuclear Production Director, Office of Inspection and Enforcement (40 copies)

Director, Office of Management Information and Program Control (3 copies) 110060136 810928 hI l 3,DR ADOCK 05000311 g

<PDR ss2ie9 02mnico The Energy People g

r Report Number:

81-94/GlT Report Date:

9-28-81 Occurrence Date:

9-18-81 Facility:

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

Containment Fan Coil Unit - Service Water Leak.

This report was initiated by Incident Report 81-380.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 90% - Unit Load 1020 MWe DESCRIPTION OF OCCURRENCE:

On September 18, 1981, during a routine containment inspection, an operator discovered service water leaking from the third from bottom primary cooling coil, on No. 23 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 confirmetion transnitted within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

No. 23 CFCU was declared inoperable and action statement 3.5.2.3.a was entered at 1123 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.273015e-4 months <br />, September 18, 1981.

This occurrence constituted operation in a degraded mode in accordance with technical specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE RF OCCURRENCE:

Equipment failure.

The service water leak was due to a pinhole leak in the third from bottom primary coil cn No. 23 CFCU.

ANALYSIS OF OCCURRENCE:

i 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-4 down within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

N

r LER 81-94/0lT -

CORRECTIVE ACTIO_N:

The third from bottom primary coil on No. 23 CFCU was isolated from the renainder of the coils by installing a blank flange insert between the service water inlet and outlet flanges.

As per engi-neering analysis, it is possible to isolate an individual cooler.'.

this manner while retaining acceptable efficiency of the cooler.

This cooler will be replaced during a future outage; however, no supplemen-tary report will be issued.

No. 23 CFCU was tested satisfactorily and returned to service.

Action statement 3.6.2.3.a was terminated at 1756 hours0.0203 days <br />0.488 hours <br />0.0029 weeks <br />6.68158e-4 months <br />, September 18, 1981.

FAILURE DATA Westinghouse Coil Cooler Spin No. RCMECF Prepared By F.

Dickey

/c tesg-Manager - Salem.dhnerating Station SORC Meeting No.

81-98