ML19309B945

LER 80-016/03L-0:on 800311,while Testing Battery Charger 2, Ac Input Breaker Tripped.Caused by Loose Control Wiring. Loose Wires Resoldered

ML19309B945
Person / Time
Site:	Beaver Valley
Issue date:	03/31/1980
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19309B921	List: ML19309B920 ML19309B924 ML19309B945
References
LER-80-016-03L, LER-80-16-3L, NUDOCS 8004070375
Download: ML19309B945 (1)

Text

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P.RC FO;;M 366

• U. S. NUCLE AR HEGUL ATORY COMMISSION (1 119 LICENSEE EVENT REPORT (PLE ASE PRINT OR TYPE ALL REQUIREO INFORMATION) l

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CONTROL 8 LOCK: l 8

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EVENT OESCRIPTION AND PROSA8LE CONSEcuENCES h

og,j lWhile testing the 1/2 Battery Charger, the AC input breaker tripped. The charger hadj been loaded for approxiinately 7 minutes in accordance with the load test. The g goi,,g io l4 l l breaker was reset and the charger returned to service. No further problems were l 1nisitexperienced with the breaker. Loose control wiring was found and is being i iO is l )investicated. The No. 2 Battery Charger was not needed for Operational Mode 5. l l 0 l 71 l Associated batteries //1 and 3 were in service to support " Train A Priority". I I

Ic la i ! 80 SYSTEM CAUSE CauS E COMP VALVE CODE CODE SUSCODE COYPONENT CODE SUSCODE SUSCODE ITTil 9 I r.1 c l@ Lx_l@ l z i@ I z l z l z l 21 zl zl@ l z l@ l20zi @

10 12 13 is 19 F 8 11 R EV15lON

,_ SEOVENTI AL OCCURRENCE REPORT EVENT YE AR REPORT NO. CODE TYPE N O.

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44 47 CAUSE CESCRIPTION ANO CORRECTIVE ACTIONS h l i l 0 l l Loose control wirine has been diacnosed as the cause of the breaker trip. After l liii1l completion of the surveillance test, all wiring was checked and the loose wire was I liirilre-soldered. The surveillance test was reperformed satisfactorily. I I

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iSCO RV OtSCOVERY DESCRIPTION

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