ML20009A626

Forwards LER 81-031/03L-0.Detailed Event Analysis Encl

ML20009A626
Person / Time
Site:	Salem
Issue date:	07/01/1981
From:	Uderitz R Public Service Enterprise Group
To:	Girer B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20009A627	List: 05000311/LER-1981-031, Forwards LER 81-031/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-031-03, /03L-0:on 810601,auxiliary Alarm Annunciator Declared Inoperable Due to Erratic Operation.Caused by Ground in Annunciator.Ground Isolated.Annunciator Tested Satisfactorily & Returned to Operable Status
References
NUDOCS 8107130394
Download: ML20009A626 (3)

Text

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'O PSIEG Public Service Electric and Gas Company 80 Park Plaza Newar k, N.J. 07101 Phone 201/430-7000 July 1, 1981 Mr. Boyce H. Grier Director of USNRC Office of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-31/03L Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 81-31/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, f$/ h{

R. A. Uderitz General Manager -

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Report Number: 81-31/03L Report Date: July 1, 1981 Occurrence Date: 6-1-81 Facility: Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Reactor Coolant System - Leakage Detection System CONDITIONS PRIOR TO OCCURRENCE:

Mode 3 - Rx Power 0% - Unit Load 0 MWe DESCRIPTION OF OCCURRENCE:

At 1655 hours0.0192 days <br />0.46 hours <br />0.00274 weeks <br />6.297275e-4 months <br />, June 1, 1981, the Auxiliary Alarm Annunciator was declared inoperable due to erratic operation. Since the Containment Sump Level Monitoring System was monitored by the Auxiliary Alarm Annunciator the Containment Sump Level Monitoring System was declared inoperable and Action Statement 3.4.7.1.b was entered.

This occurrence constituted operation in a degraded mode IAW Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Equipment failure. The Auxiliary Alarm Annunciator was found to be inoperable due to a ground in the alarm circuit associated with No. 23 Turbine Generator Area Sump Pump. The ground was causing erroneous l alarm print outs and erratic system operation.

l ANALYSIS OF OCCURRENCE:

Technical Specification 3.4.7.1, requires that with only two leakage detection systems operable, operation may continue for up to 30 days provided grab samples of the containment atmosphere are obtained and analyzed at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when the required gaseous and/or particulate radioactivity monitoring system is inoperable.

CORRECTIVE ACTION:

The No. 23 Turbine Sump Pump alarm disconnect links in the Auxiliary Alarm Annunciator Cabinet were opened, isolating the ground. The Auxiliary Alarm Annunciatcr was then tested satisfactorily and the Containment Sump Level Monitoring System was made operable.

Action Statement 3.4.7.1.b was terminated at 1920 hours0.0222 days <br />0.533 hours <br />0.00317 weeks <br />7.3056e-4 months <br /> on June 1, 1981.

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-LER 80-31/03L July 1, 1981 FAILURE DATA:

Not Applicable Prepared By J. J. Espey ,- v SORC Meeting No. 81-56