05000311/LER-1981-064, Forwards LER 81-064/01T-0.Detailed Event Analysis Encl

Forwards LER 81-064/01T-0.Detailed Event Analysis Encl

ML20030C152
Person / Time
Site:	Salem
Issue date:	08/17/1981
From:	Uderitz R Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20030C153	List: 05000311/LER-1981-064, Forwards LER 81-064/01T-0.Detailed Event Analysis Encl 05000311/LER-1981-064-01, /01T-0:on 810806 & 07,svc Water Leak Discovered on Containment Fan Unit 22.First Leak Caused by Loose Body to Bonnet Studs on Valve 22SW65.Second Caused by Weld Joint
References
NUDOCS 8108250439
Download: ML20030C152 (3)

LER-1981-064, Forwards LER 81-064/01T-0.Detailed Event Analysis Encl

Event date:
Report date:
3111981064R00 - NRC Website

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Public Service Electric and Gas Company 80 Park Plaza Newark, N.J. 07101 Phone 201/430-7000 August 17, 1981

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Director of USNRC b &L b

Mr. Boyce H.

Gra,.er W

Office of Inspection and Enforcement

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f rk Avenue g

'. l, King of Prussia, Pennsylvania 19406 su

Dear Mr. Grier:

in LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-64/0lT Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications Section 6.9.1.9.b and IE Bulletin 80-24, we are submitting Licensee Event Report for Reportable Occurrence 81-64/0lT.

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

Sincerely yours, Y

{

R. A.

Uderitz General Manager -

Nuclear Production CC:

Director, Office of Inspection and Enforcement (40 copies)

Director, Office of Management Information and Program Control (3 copies)

$ "db 9* <(

(i)108250439 810817 PDR ADOCK 05000311 e 5

PDR 95; m i m i ei

A Report Number:

81-64/0lT Report Date:

August 17, 1981 Occurrence Date:

8-6-81 Facility:

Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 1

IDENTIFICATION OF OCCURRENCE:

Containment Fan Coil Unit - Service Water Leak.

l This report was initiated by Incident Reports81-307 and 81-312.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 75% - Unit Load 780 MWe DESCRIPTION OF CCCURRENCE:

On August 6, 1981, during a routine containment inspection, an operator discovered a service water leak of approximately.5 gallons per minute emanating from the body to bonnet sealing area of valve 22SW65 on No. 22 containment fan coil unit (CFCU).

In accordance with NRC IE Bulletin 80-24, the NRC was notified of the service water leak by telephone with prompt notification made to the resident NRC Inspector at 0720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> on August 7, 1981.

No. 22 CFCU was removed from service and the service water leak was isolated.

Action state-ment 3.6.2.3.a was entered at 2250 hours0.026 days <br />0.625 hours <br />0.00372 weeks <br />8.56125e-4 months <br />, August 6, 1981, after

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declaring the CFCU inoperable due to service water isolation.

4 On August 7, 1931, while preparing the CFCU for testing after the repair of 22r.55 the tell-tale leakage line from the CFCU motor cooler indicated a leak rate of approximately 1.6 gallons per minute.

The leakage was determined to come from a weld joint next to the service water inlet flange.

Service water to the CFCU was isolated and the CFCU was again declared inoperable.

Action statement 3.6.2.3.a remained in effect.

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

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DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

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j August 6, 1981 Equipment failure.

Valve 22SW65 was leaking l

from the body to bonnet sealing area.

August 7, 1981 Equipment failure.

A No. 22 CFCU motor cooler had developed a leak at the weld joint next to the service water inlet flange.

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LER 81-64/OlT

< 8/17/81 i

ANALYSIS OF OCCURRENCE:

Technical specification ~;.6.2.3.a requires with:

i One group containment cooling fans inoperable and both

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Containment Spray Systems operable, restore the inoperable group of cooling fans to operable status within 7 days or i

be in at least 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 /> or in j

cold shutdown 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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CORRECTIVE ACTION

i The body to bonnet studs on valve 22SW65 were tightened and the leak stopped.

The weld ~ joint on the CFCU motor cooler was weld repaired and hydrostatically tested with satisfactory results.

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The CFCU was tested satisfactorily and returned to service.

At 2028 4

hours on August 10, 1981, action statement 3.6.2.3.a was terminated.

FAILURE DATA:

No Applicable 4

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D <[ M Prepared By J. Varga Manager'- Shlem ' Generating Station i

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SORC Meeting No.

81-76 i

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