ML20052G510

LER 82-010/03L-0:on 820407,reactor Bldg Isolation Valve 1LWD-1 Failed to Close After Pumping Reactor Bldg Normal Sump.Apparently Caused by Dirty Contact in Valve Operating Motor Starting Compartment.Contact Cleaned

ML20052G510
Person / Time
Site:	Oconee
Issue date:	05/07/1982
From:	Kutzer J DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20052G507	List: ML20052G506 ML20052G510
References
LER-82-010-03L-01, LER-82-10-3L-1, NUDOCS 8205180424
Download: ML20052G510 (1)

Text

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• 9 NAC PORM 364 U.S.NUCLEAA REGULATORY COMMtssacos (7 TF1 UCENSEE EVENT REPORT EXHIBIT A Cont Rot stoCx: l l l l l l l (et.EAss PRINT OR TYPE ALL REQUIRED INFORMATIONI i .@

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EVENT DE5CalmON AND PROSASLE CONSECUENCES h foTil lon April 7. 1982, valve 1 LWD-1 did not close after pumping the Reactor Building i mi ln rmal sump. This valve is the Reactor Building isolation valve for the Reactor g Building normal sump; thus, this event is a degraded mode per Technical Specifi-

, , , cation 3.6.3.b. The redundant isolation valve was locked shut within one hour and valve lLWD-1 was repaired and declared operable within four hours; thus, the f , health and safety of the public were not affected by this incident.

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,, , y The apparent cause of this occ rence was a dirty contact inthevalveoperating motor starting compartment. The contact was cleaned and the valve cycled

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EI f satisfactorily. The preventive maintenance procedure has been modified to re-gquire specific visual inspection of the contacts, and cleaning of the contacts y gas necessary. ,

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