ML20027A528

LER#78-061/03L-0 on 781108:AO-2-1601-24 Failed to Close Due to Solenoid Valve Stuck Open W/Dirt in Valve Internals. Solenoid Valve Replaced,Tested & Returned to Svc

ML20027A528
Person / Time
Site:	Dresden
Issue date:	12/08/1978
From:	Parcell COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17173A415	List: ML17173A414 ML20027A528
References
LER-78-061-03L, LER-78-61-3L, NUDOCS 7812150272
Download: ML20027A528 (1)

Text

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LsCENSEE EVENT REPORT CONTROL SLOCK: l i

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REPCRT CATE 80 EVENT DESCRIPTION AND PROBABLE CCNSECUENCES h

- t2I lDuring normal unit ooeration, A0-2-1601-24 failed to close when its control switch I

-l2l lvas placed in the "close" cosition following containment venting. Upstream valves l r i .: [ l AO-2-1601-60, -61, -62 & -23 were operable and were closed to maintain containment l i c Isl Iintegrity. A0-2-1601-24 was closed 25 min later by disconnecting an air line. This I

- la1lis the first m enrrence of this tvoe. l ,

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^ 33 4o 42 CAUSE CESCRIPTION AND CORRECTIVE ACTICNS h l o l l Valve A0- 2-1601-24's air o.perator solenoid valve stuelc in the "open" position due to I

_1g l an accuemulaticA2 of dirt in the valve internals. The solenoid valve was replaced i F ,21 Iand A0-2-1601-24 tested for proper operation prior to returning to service. Due to l

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t3l l the singularnature of this event, no additional action is planned. l 64 II l 3 9 80

1. 'r#EE S . power oTHER STATUS @ NoNRv' -CrsCovERY oESCRierion @

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