ML20028B333

Forwards Supplemental LER 82-020/03X-1.Detailed Event Analysis Encl

ML20028B333
Person / Time
Site:	Salem
Issue date:	11/03/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20028B334	List: ML20028B333 ML20028B348
References
NUDOCS 8211300295
Download: ML20028B333 (3)

Text

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D PSEG Public Service Electr:c and Gas Cornpany P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station November 3, 1982 Mr. R. C. Ilaynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Ilaynes :

LICENSE NO. DPR-7 5 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 82-20/03X-1 SUPPLEMENTAL REPORT Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications, Section 6.9.1.9.b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 82-20/03X-1.

Sincerely yours, Y

II . J. Midura l

General Manager -

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Report Number: 82-20/03X-1 Report Date: 11-03-82 Occurrence Date: 03-13-82 Facility: Salem Generating Station, Unit 2 Public Service' Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 23 Auxiliary Feedwater Pump - Inoperable - Failed Governor.

This report was initiated by Incident Report 82-053.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 100% - Unit Load 1160 MWe DESCRIPTION OF OCCURRENCE:

On March 13, 1982, during performance of Surveillance Procedure SP (O) 4. 0. 5.p, No. 23 Auxiliary Feedwater Pump would not attain the specified minimum speed _ of 3500 RPM. At 1131 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.303455e-4 months <br /> the pump was declared inoperable, and Action Statement 3.7.1.2.a was entered.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The auxiliary feedwater pump failed to reach speed because vibration had caused the governor linkage to be out of adjust-ment and there was leakage past the overspeed ball check valve.

ANALYSIS OF OCCURRENCE:

The operability of the auxiliary feedwater system ensures that g the Reactor Coolant System can be cooled down to less than 350 F from normal operating conditions in the event of a total loss of offsite power.

Technical Specification 3.7.1.2.a requires:

With one auxiliary feedwater pump inoperable, restore the refluired auxiliary feedwater pump to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or be in at least het 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 hot shutdown within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Inoperability of No. 23 Auxiliary Feedwater Pump, therefore, constitutes operation in a degraded mode permitted by a limiting condition for operation and is reportable in accordance with Technical Specification 6.9.1.9.b.

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.' i CORRECTIVE ACTION:

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, The overspeed ball check valve seatSd after jeing flushed and the governor linkage was properly. adjusted. Surv'eillance Procedure SP (O) 4.0.5.p was satisfactorily performed. At 134 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, March 14, 1982 the pump was.' declared operable and Action Statement 3.7.1.2.a was terminated.

Inspection Order Cards have been issued to prevent recurrence of the problem with the governor linkage and a similar problem. -

with the trip linkage documented in LER 81'-08 9 /0 3L . These cards require an annual tightness and visual inspection of the linkages on both Nos. 13 and 23-Auxiliary Feedwater Pumps. N' FAILURE DATA: ,

2 A similar occurrence was ex'perienced on No. 23 Auxiliary Feedwater Pump and was documented in LER 81-089/03L. In this occurrence, vibration had caused the trip mechanism bolts to loosen.  :

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