ML19347B147

LER 80-065/03L-0:on 800828,while Inerting Drywell,Discovered That Nitrogen Purge Supply Isolation Valve AO 5033B Would Not Close Via Control Switch.Caused by Defective Solenoid Vent Valve.Valve Repaired

ML19347B147
Person / Time
Site:	Pilgrim
Issue date:	09/29/1980
From:	Graham E BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19347B146	List: ML19347B145 ML19347B147
References
LER-80-065-03L, LER-80-65-3L, NUDOCS 8010010674
Download: ML19347B147 (1)

Text

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74 75 61 DOCKET NUMBER EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h Io l2l l While inerting the drywell it was discovered that the nitrogen purge supply isolation l rot6 1 I valve A0 5033B would not close via the control switch. l l0 I4I I l L9J 2) l I lo is l l l

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42 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h g l The cause was determined to be a defective solenoid vent valve. The valve was I m I repaired, tested and declared operable on 9/29/80. - l 11 121 1 I L1 L3J l I Li_ L4.J l I 7 8 9 80 STA  % POWER OTHER STA TUS clS O Y OtSCOVERY DESCRIPTION y y @ l0l0l0l@l N.A. l l**A l@l Operator Observation l

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