ML20027A529

LER#78-062/03L-0 on 781115:AO 1601-56 Valve Failed in Closed Position.Caused by Shorted Out Coil on Solenoid.Solenoid Coil & Fuse Replaced & Valve Verified Operational

ML20027A529
Person / Time
Site:	Dresden
Issue date:	12/08/1978
From:	Cleszkiewicz S COMMONWEALTH EDISON CO.
To:
Shared Package
ML17173A427	List: ML17173A426 ML20027A529
References
LER-78-062-03L-01, LER-78-62-3L-1, NUDOCS 7812180228
Download: ML20027A529 (1)

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EVENT DESCRIPTION ANC PRCSA3 E Oct.33cuENCES h l o f 21 l While perfov ning DOS 1600-12, Monthly Containment Purge System Operability, fuse l FET5'l I 595-719 (feed to Drywell Air Sample Vivs & Makeup Vivs) was found blown. Fuse re- l o 1.i i [ placed and all valves operated except AD 1601-56 which again blev fuse. Safety i ITTT1I significance minimal because valve failed in closed position thus maintaining primary l l l o le 1 I containment integrity. Similar event has occurred previously as ref. in 78-054/03L-01 g i 7, [ Docket #050-237. -

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