ML20028C877

Forwards LER 82-092/03L-0.Detailed Event Analysis Encl

ML20028C877
Person / Time
Site:	Salem
Issue date:	01/03/1983
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20028C878	List: ML20028C877 ML20028C886
References
NUDOCS 8301140256
Download: ML20028C877 (3)

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@PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salein Generating Station January 3, 1983 Mr. R. C. Haynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-7b DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-092/03L Pursuant to the requirements of Salem Generating Station Unit No. 1, Technical Specifications, Section 6.9.1.9.b,

'we are submitting Licensee Event Report for Reportable Occurrence 82-092/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours,

/

'b H. J. Midura General Manager -

Salem Operations RF:ks CC: Distribution

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8301140256 830103 PDR ADOCK 05000272 4 S PDR l l

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u. -Report Number:- 82-092/03L Report Date: 12-29-82 Occurrence Date: 12-06-82 Facility: Salem Generating Station, Unit'l Public Service. Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Radiation Monitoring Instrumentation - Containment Purge and Pressure / Vacuum Relief Isolation System - Inoperable.

This report was initiated by Incident Report 82-503.

CONDITIONS PRIOR TO OCCURRENCE:

Mode C - Rx Power 0% ~ - ~ Unit Load 0 MWe.

DESCRIPTION OF OCCURRENCE:

At 0411 hours0.00476 days <br />0.114 hours <br />6.795635e-4 weeks <br />1.563855e-4 months <br />, December 6, 1982, during routine refueling operation, the Control Room Operator discovered that the Containment Air Particulate Monitor 1RllA indication had failed low. The channel was declared inoperable; since it is utilized by the Containment Purge and Pressure / Vacuum Relief Isolation System, Limiting Condition for Operation 3.3.3.lb Action 22 was entered. The containment air lock doors were immediately shut to further isolate the containment purge flowpath. The related containment gaseous and iodine monitors (Channels 1R12A and 1R12B) were operable providing redundant indication and purge isolation capability.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Investigation of the problem revealed that the channel scintillation detector had failed. No other problems were evident, and no recent, similar occurrences had been noted. The event was therefore assumed to be of an isolated nature.

ANALYSIS OF OCCURRENCE:

The operability of the Containment Purge and Pressure / Vacuum Relief .

Isolation System insures that the containment vent and purge penetrations will be automatically isolated upon detection of high radiation levels within the containment. This feature is required to1 restrict the release of radioactive material from the containment atmosphere to the environment in the event of an accident.

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?? R4 ,LER 82-092/03L N ANALYSIS OF OCCURRENCE: (cont'd).

Limiting. Condition - for Operation 3.3.3. lb Action 22 requires:

With'thelcontainment Purge ~and Pressure / Vacuum Relief Isolation System inoperable,~close each of the purge and pressure / vacuum = relief penetrations providing direct

< access.from the containment. atmosphere to.the outside atmosphere. ,

As.noted, the air lock doors were immediately closed. The pene-trations in the purge and pressure / vacuum relief line were already

. closed, in compliance with the action statement. . Due to the operable .. redundant monitoring channels' and the -prompt . adherence '

to administrative controls, no risk to the health and safety of.

the public'was involved. The occurrence constituted operation in a degraded. mode permitted by a limiting condition for operation and is reportable in accordance with Technical Specification 6.9.1.9b.

2 CORRECTIVE ACTION:  ;

. The. failed' detector was replaced and the channel.was satisfactorily tested. Radiation Monitor 1RllA was declared operable at 2040 ,

j hours, December 6, 1982, and Limiting Condition for Operation  ;

Action 22 was terminated. No further action was deemed necessary *

) in view of the nature of the occurrence.

e ,

FAILURE DATA:  ;

LFE Corp.

Scintillation Detector. ,

Model MD5B i

Prepared By R. Frahm General M'anager -

//M Gbv ,

(

Salem Operations s SORC Meeting No.82-114  ;

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