ML19276F330

LER 79-013/03L-0 on 790217:check Valves 1-263-2-31B & 1-263-42A Failed to Check Flow Through Instrument Lines. Caused by Dirt in Valve Internals.Internals Removed,Cleaned & Reassembled

ML19276F330
Person / Time
Site:	Quad Cities
Issue date:	03/14/1979
From:	Kopacz J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19276F327	List: ML19276F326 ML19276F330
References
LER-79-013-03L-02, LER-79-13-3L-2, NUDOCS 7903280355
Download: ML19276F330 (1)

Text

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, j salves 1-263-2-318 and 1-263-42A failed to check the flow throuch the instrument i

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i o l The apparent cause of this event was an accumulation of dirt on the valve i n te rna l s , I g[ enhanced by low flow conditions and by the fact that these valves do not chance  !

, , g position d'uring normal plant operation. The valve internals were removed, cleaner' l

, , g and reassembled. The valves-ware then successfully tested. A previous failure of thij

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