05000293/LER-1980-082-03, /03L-0:on 801008,containment Isolation Valve MO-1001-34B Did Not Close When Actuated by Control Switch. Caused by Failure of Valve Torque Switch.Valve Replaced, Satisfactorily Tested & Returned to Svc

/03L-0:on 801008,containment Isolation Valve MO-1001-34B Did Not Close When Actuated by Control Switch. Caused by Failure of Valve Torque Switch.Valve Replaced, Satisfactorily Tested & Returned to Svc

ML19339C590
Person / Time
Site:	Pilgrim
Issue date:	11/07/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19339C584	List: 05000293/LER-1980-082, Forwards LER 80-082/03L-0 05000293/LER-1980-082-03, /03L-0:on 801008,containment Isolation Valve MO-1001-34B Did Not Close When Actuated by Control Switch. Caused by Failure of Valve Torque Switch.Valve Replaced, Satisfactorily Tested & Returned to Svc
References
LER-80-082-03L, LER-80-82-3L, NUDOCS 8011180650
Download: ML19339C590 (2)

LER-1980-082, /03L-0:on 801008,containment Isolation Valve MO-1001-34B Did Not Close When Actuated by Control Switch. Caused by Failure of Valve Torque Switch.Valve Replaced, Satisfactorily Tested & Returned to Svc

Event date:
Report date:
2931980082R03 - NRC Website

text

NRC FORM 386

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U.S. NUCLEAR RE2ULATCnY COMfU, SiON ~

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17 77 LICENSEE EVENT REPORT CONTROL 8 LOCK: l l

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60 61 COCKET NUMSER 68 69 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h ITTTl l On October 8 1980 at approximately 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> Containment Isolation Valve }O-1001-l f 5 TT1 1 34B did not close when actuated by the control switch. This valve is utilized in l

1 O 141 l the suppression chamber spray mode of the RHR System. An immediate investigation l

);O g s, l was initiated, the valve repaired, and the reactor startup, already in progress, l

IO l6 l l Continued.

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ji,,,,l approximately 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> the same day.

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