ML20005A824

LER 81-004/03L-0:on 810212,primary Level Indication for Elevated Water Storage Tank Was Declared Inoperable Following Low Water Level Alarms.Caused by Loose Connectors on Air Compressor Starter Terminals.Connections Tightened

ML20005A824
Person / Time
Site:	Oconee
Issue date:	03/13/1981
From:	Jackie Jones DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20005A822	List: ML20005A821 ML20005A824
References
LER-81-004-03L-01, LER-81-4-3L-1, NUDOCS 8107010339
Download: ML20005A824 (1)

Text

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I"3"ITI Dn Februarv 12, 1981, the level indication for the EWST was declared inoperable [

A khen the control room indicator showed 0% water level. During this incident. [

lo!.iIthe EWST was verified full by use of the Heise Gauge in the turbine building, g I o e s i i Also both HPSW oumps were manually operable. Thus, this incide.nt was of no g totoi!sienificance with respect to safe operation, and the health and safety of the ,

lo 6 71 l oublic were not af fected. [

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li i o i I The crimarv cause was loose connectors on the air compressor starter terminals. ,

lieii1A second significant cause was the sticking valves fgr the area evacuation ,

m Ihorn. All connections on the motor starter were tightened. All solencia ,

m I valves for the area evacuation horn were replaced. Improvements will be made ;

iie.itto help reduce the potential for future occurrences. ,

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auus Ce emepagan J. L. Jones meng(704) 373-81G7 810701033$/ _r