05000311/LER-1981-090, Forwards LER 81-090/01T-0.Detailed Event Analysis Encl

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Forwards LER 81-090/01T-0.Detailed Event Analysis Encl
ML20049B239
Person / Time
Site: Salem PSEG icon.png
Issue date: 09/21/1981
From: Midura H
Public Service Enterprise Group
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20049B493 List:
References
NUDOCS 8110020395
Download: ML20049B239 (3)
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LER-1981-090, Forwards LER 81-090/01T-0.Detailed Event Analysis Encl
Event date:
Report date:
3111981090R00 - NRC Website
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text

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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 21, 1981 9]

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Mr.

R.

C.

Haynes

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l_' #* *.gO[j LgI Director of USNRC Region 1 2d

/ggIAh Office of Inspection and Enforcement

- 4 631 Park Avenue A

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King of Prussia, Pennsylvania 19406 s

Dear Mr. Haynes:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-90/0lT Pursuant to the requirements of Salem Generating Station Unit No. 2, Technical Specifications, Section 6.9.1.8.c, we are submitting Licensee Event Report for Reportable Occurrence 81-90/01T.

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

Sincerely yours,

//l %l WJ H. J. Midura Manager - Salem Generating Station CC:

R. A.

Uderitz General Manager - Nuclear Production Director, Office of Inspection and Enforcement (40 copies)

Director, Office of Management Information and Program Control (3 copies) ff5b 91) 8110020395 810921

.PDR ADOCK 05000311

(; S PDR i

The Energy People 952is9 n2wnico t

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i Report Number:

81-90/OlT Report Date:

9-21-81 Occurrence Date:

9-13-81 Facility:

Salem Generating Station, Unit 2 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 81-372.

' CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 70% - Unit Load 730 MWe DESCRIPTION OF OCCURRENCE:

On September 13, 1981, during a routine containment inspection, an operator discovered service water leaking from the bottom primary cooling coil, on No. 22 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. 22 CFCU was declared inoperable.and action statement 3.6.2.3.a was entered at 1940 hours0.0225 days <br />0.539 hours <br />0.00321 weeks <br />7.3817e-4 months <br />, September 13,.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 bottom.p-imary coil on No. 22 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 statas 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 81-90/OlT -

CORRECTIVE ACTION

The bottom primary coil on No. 22 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; however, no supplementary report will be issued.

No. 22 CFCU was tested satisfactorily and returned to service.

Action statement 3.6.2.3.a was terminated at 1950 hours0.0226 days <br />0.542 hours <br />0.00322 weeks <br />7.41975e-4 months <br />, September 14, 1981.

FAILURE DATA:

Westinghouse Coil Cooler Spin No. RCMECF Prepared By F. Dickey f/ Q,L d g Manager - SalenfGenerating Station SORC Meeting No.

81-94

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