05000311/LER-1982-137, Forwards LER 82-137/03L-0.Detailed Event Analysis Encl

Forwards LER 82-137/03L-0.Detailed Event Analysis Encl

ML20079H117
Person / Time
Site:	Salem
Issue date:	12/01/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20079H122	List: 05000311/LER-1982-137, Forwards LER 82-137/03L-0.Detailed Event Analysis Encl
References
NUDOCS 8212160048
Download: ML20079H117 (3)

LER-2082-137, Forwards LER 82-137/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3112082137R00 - NRC Website

text

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O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station December 1, 1982 Mr. R. C. !!aynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 82-137/03L 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 82-137/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours,

. p/fV'h II . J. Midura General Manager -

Salem Operations RF:ks I CC: Distribution l

B212160048 B21201 PDR ADOCK 05000311 S ppg h f The Energy People M 2189 COM) 1181 l ~

Report Number: 82-137/03L Report Date: 12-01-82 Occurrence Date: 11-15-82 Facility: Salem Generating Station Unit 2 Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Containment Sump Monitoring System - Inoperable.

This report was initiated by Incident Report 82-460.

CONDITIONS PRIOR TO O_CCURRENCE:

Mode 1 - RX Power 82 % - Unit Load 910 MWe.

DESCRIPTION OF OCCURRENCE:

At 0758 hours0.00877 days <br />0.211 hours <br />0.00125 weeks <br />2.88419e-4 months <br />, November 15, 1982, during routine operction, the Control Room Operator discovered that the auxiliary alarm typewriter was not printing intelligibly. The Containment Sump Monitoring System

- utilizes the typewriter as a printout device for containment sump pump

)

start and stop times. The system was therefore declared inoperable

,i and Technical Specification Action Statement 3.4.7.1 was entered.

Redundant Reactor Coolant System (RCS) leakage detection systems were operable throughout the occurrence. A voltmeter was temporarily connected to the pump breaker control circuitry, and an operator was l stationed at the voltmeter to monitor pump operation.

APPARENT CAUSE OF OCCURRENCE:

l Investigation of the malfunction of the auxiliary alarm typewriter revealed the tilt ring assembly was out of adjustment. No other problems were evident, and no recent occurrences of this type had been noted. The event was therefore assumed to be of an isolated nature.

1

! ANALYSIS Of__QCCURRERCE:

The Containment Sump Monitoring System is utilized as an RCS leakage detection system to monitor and detect leakage from the Reactor

! Coolant Pressure Boundary. Since the redundant detection systems were

! operable, the incident involved no risk to the health and safety of the public.

l Due to the loss of redundancy in safety related systems, the I occurrence constituted operation in a degraded mode permitted by a I limiting condition for operation. The event is therefore reportable in accordance with Technical Specification 6.9.1.9b.

t 1

c LER 82-137/03L ANALYSIS OF OCCURRENCE: (cont'd)

Action Statement 3.4.7.1 Requires:

With only two of the required 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; otherwise, 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 /> and in 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 />.

CORRECTIVE ACTION:

As noted, a voltmeter was temporarily connected for monitoring containment sump pump operation. The tilt ring assembly was adjusted and the typewriter was satisfactorily tested. At 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br />, November 16, 1982, the Containment Sump System was declared operable and Action Statement 3.4.7.1 was terminated. In view of the nature of the problem, no further action was deemed necessary.

FAILURE DATA:

IBM Corp.

Teletypewriter Type CORR Model 73-5 Prepared By R. Frahm /h. Od /

Gen (ral Manager -

Salem Operations SORC Meeting No. 82-1n7

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