05000272/LER-1981-064, Forwards LER 81-064/01T-0.Detailed Event Analysis Encl

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

ML20010C734
Person / Time
Site:	Salem
Issue date:	08/11/1981
From:	Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010C735	List: 05000272/LER-1981-064, Forwards LER 81-064/01T-0.Detailed Event Analysis Encl 05000272/LER-1981-064-01, /01T-0:on 810715,during Routine Insp,Svc Water Leak Was Discovered on Containment Fan Coil Unit.Caused by Cracked Weld Upstream of Valve 15SW65.Dissimilar Metal Piping Changed to All Stainless Steel
References
NUDOCS 8108200360
Download: ML20010C734 (3)

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

Event date:
Report date:
2721981064R00 - NRC Website

text

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o pggg LPublic Service Efectric and Gas Company 80 Paik Plaza Newark, N.J. 07101 - Phone 201/430-7000 August 11, 1981-b f.9/j' s

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Mr.: Boyce II. Grier

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Office of Inspection and Enforcement Region 1 yg y g gOI 631-Park Avende

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King of Prussia, Pennsylvania 194'16 b "

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Dear Mr. Grier:

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/g LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-64/0lT

- Pursuant to the requirements of Salem Generating Station Unit No. 1 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 was required within fourteen (14) days of the occurrence in accordance with IE Bulletin 80-24.

It is being submitted late because of oversight during a turnover of LER Coordinators.

Normally, equipment malfunctions are thirty (30) day reports, and this report was mistakenly filed as a thirty day report during the personnel change.

Sincerely yours, tc cb bwd Manager - Salem Generating Station

- CC:

General Manager - Nuclear Production s

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0108200360 010011" PDR ADOCK 05000 h Me O

95-2001 (400M) 1-81

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c, Report Number: 64/OlT IReport'Date:

8-11-81 Occurrence Date:

7-15-81 Facility:

. Salem Generating Station, Unit i Public Service Electric & Gas Company

- Ilancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Containment Fan Coil Unit Service Water Leak..

This_ report'was initiated by Incident Report 81-255.

CONDITIONS PRIOR TO' OCCURRENCE:

Mode 1 - Rx' Power 96% - Unit Load 1000 MWe DESCRIPTION OF OCCURRENCE::

On July 15, 1981, during a routine" containment inspection, an operator discovered' service water leaking from a 3/4" vent connection pipe weld up stream of valve-15SW65 on No. 15 containment. fan-coil unit (CFCU),

at a-rate of approximately 1.5 gallons per hour.

In accordance with

'NRC IE Bu11etin.80-24, the NRC was notified'of the service water leak in contalument by telephone at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> with written confirmation transmit ced within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

No. 15 CFCU was removed from service'and the service-water leak isolated.

Action statement'3.6.'2.3.a was antered at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />, July 15, 1981, after declaring the CFCU inop-erable due to service water isolation.

This occurrence constituted operation in a degraded mode in accord-ance with technical specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The service water leak was due to a. weld failure on a 3/4" pipe to flange' dissimilar metal weld.

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 />.

f NER 81-64/OlTf,

CORRECTIVE ACTION

The crackiwac'in a weld between a 3/4" carbon steel pa

'ind a stain-less steel. flange.

There was an existing design change request to change the dissimilar metals in that system to all stainless steel.

_The 3/4" carbon steel pipe was removed, and replaced with stainless steel. TNo. 15 fan coil unit was tested satisfactorily and returned to service.

At 2145 hours0.0248 days <br />0.596 hours <br />0.00355 weeks <br />8.161725e-4 months <br /> July 16, 1981, action statement 3.6.2.3.a was terminated.

The design change request was completed on Nos. 11, 12, 13 and 14

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containment fan coil units.

No. 15 CFCU is partially completed and will be finished during the next suitable outage' period.

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FAILURE DATA:

Weld on 3/4" carbon steel pipe.

I Prepared By F.

Dickey C

Manager - Salem Generating Station

- SORC Meeting No.

81-74 1

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