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

/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

ML20009A630
Person / Time
Site:	Salem
Issue date:	07/01/1981
From:	Espey J Public Service Enterprise Group
To:	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
LER-81-031-03L, LER-81-31-3L, NUDOCS 8107130399
Download: ML20009A630 (1)

LER-1981-031, /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

Event date:
Report date:
3111981031R03 - NRC Website

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT D ATE 80 EVENT DESCRIPTION AND PROBABL' CONSEQUENCES h E

o,;; l 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 l

[5"T T] l inoperable due to erratic operation.

Since the Containment Sumo Level Monitorina l

l o i4 l l System was monitored by the Auxiliary Alaim Annunciator the Containment Sump Level l lo Is t l Monitoring System was declared inoperable and Action Statement 3.4.7.1.b was l

lo is l l entered.

This occurrence constituted operation in a dearaded mode in accordance l

I O l 71 l with Technical Specification 6.9.1.9.b.

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CAUSE

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40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l3 ga;j Investigation of this occurrence established the cause being a ground in the l

i ;i j l Auxiliary Alarm Annunciator.

The ground was causing erroneous alarm print outs l

,, i7, l and erratic. system operation.

The ground was isolated and the Auxiliary Alarm l

i ;3 g l Annunciator was then tested satisfactorily and returned to operable status.

l l3 i, i l 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 />, June 1, 1981.

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7 8 9 to 11 44 46 80 PERSONNEL EXPOSURES NUM8ER

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