05000368/LER-1979-061-03, /03L-0:on 790804,failure of Low Pressure Nitrogen Supply in Reactor Bldg Penetration,Outside Isolation Valve, to Close on Control Signal.Caused by Limit Setpoint Drift. Limit Adjusted & Valve Returned to Svc

/03L-0:on 790804,failure of Low Pressure Nitrogen Supply in Reactor Bldg Penetration,Outside Isolation Valve, to Close on Control Signal.Caused by Limit Setpoint Drift. Limit Adjusted & Valve Returned to Svc

ML19249B536
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/30/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19249B525	List: 05000368/LER-1979-060-03, /03L-0:on 790802,failure of Reactor Drain Tank 2T68 Discharge Reactor Bldg Penetration to Close from Control Signal.Caused by Crystallization of Boron in Vent on Valve Operator Piston.Valve Cleaned & Returned to Svc 05000368/LER-1979-061-03, /03L-0:on 790804,failure of Low Pressure Nitrogen Supply in Reactor Bldg Penetration,Outside Isolation Valve, to Close on Control Signal.Caused by Limit Setpoint Drift. Limit Adjusted & Valve Returned to Svc 05000368/LER-1979-062-03, /03L-0:on 790804,failure of Full Length Control Element Assembly 39 to Move.Caused by Failed Control Element Assembly Enable Card.Card Replaced & Assembly Declared Operable within 1-h of Failure ML19249B524
References
LER-79-061-03L, LER-79-61-3L, NUDOCS 7909040533
Download: ML19249B536 (1)

LER-1979-061, /03L-0:on 790804,failure of Low Pressure Nitrogen Supply in Reactor Bldg Penetration,Outside Isolation Valve, to Close on Control Signal.Caused by Limit Setpoint Drift. Limit Adjusted & Valve Returned to Svc

Event date:
Report date:
3681979061R03 - NRC Website