ML20028C227

LER 82-049/03L-0:on 821128,during Quarterly Valve Timing Surveillance DOS 1600-1,torus Inert & Purge Valve 2-1601-56 Would Not auto-close.Caused by Versa Valve Leaking from Weep Hole Due to Hardening of O-ring Seal.Valve Replaced

ML20028C227
Person / Time
Site:	Dresden
Issue date:	12/20/1982
From:	Tang Wee D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028C202	List: ML20028C201 ML20028C227
References
LER-82-049-03L-01, LER-82-49-3L-1, NUDOCS 8301070226
Download: ML20028C227 (1)

Text

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l"TTT1 l While performing quarterly valve t ing surveillance, DOS 1600-1, the torus inert ~ l l

emas l and purge valve 2-1601-56 would not auto-close. Valves 2-1601-55 and 2-1601-22 werel g I placed in the closed position per Tech. Specs. 3.7.D.2. Safety significance was l j l considered minimal since containment isolation was maintained. There was no effect l l

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CAusE DESCRIPTION ANDCOmaECTIVE ACTIONS h lijal l The most probable cause is versa valve (model number VPS 2402) leaking from the weept i,,,il hole due to hardening of the 0-Ring seal. Following the replacement of the versa  ;

gl valve and tightening the upper air supply line to the versa volve, the 2-1601-56 gl valve was proven operable. Su'rveillance test, DOS 1600-1. will continue to be l ii#4 ii performed to verify valve operability. I l '#.'W N ,o . on... .r ru. @ o"iWo' in oi.cov..voc.,no,.@

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