ML19208A757

LER 79-066/03L-0:on 790809,containment Isolation Valve 2CV-2201-2 Would Not Fully Close After Routine Draining of Reactor Drain Tank.Caused by Foreign Matl Damaging Seats & Ball,Resulting in Valve Leaking Through.Valve Cleaned

ML19208A757
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/31/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19208A735	List: ML19208A734 ML19208A739 ML19208A750 ML19208A757
References
LER-79-066-03L, LER-79-66-3L, NUDOCS 7909170420
Download: ML19208A757 (1)

Text

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4 NRC FOHM 366 U. S NUCLE AR REGUL ATORY COMMISSION (7 77)

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(d b> E VENT DATE 74 15 NF PO84 7 O ATE B0 7 8 60 8' DOCKET NuvBER EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h o 2 1During Mode 1 operation, following routine draining operation of the i o 3 i Reactor Drain Tank, containment isolation valve, 2CV-2201-2, would not i o . Ifully close. The affected penetration was isolated within one hour by i e s ideactivating 2CV-2292-1 in the closed position, meeting the requirements ;

o n iof Action Statement T.S.3.6.3.lb. Other occurrences on containment i o , Ipenetrations are 50-368/79-063,79-061, 79-060,79-044, & 78-19.

o e r Reportable per T.S.6.9.1.96. -

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@ LtLJO aj 4) a4 4, C AL'SE CELCR." TION ANO CORREC rive ACTiCNS h i o l Investigation revealed foreign material had damaged seats and ball ,

i,i,i icausing valve to leak through. The valve was disassembled, cleaned and i i

, ireassembled. No replacement parts were available, the inside contain- i

, , i ment isolation valve, 2CV-2201-1 remains deard ivated in the closed ,

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