ML19208A102

LER 79-068/03L-0:on 790812,emergency Feedwater Flow Control Valve 2CV-1025-1 from Pump 2P7B to Steam Generator a Failed to Fully Close from Control Room Demand Signal.Caused by Nonalignment of Limit Stop Switch.Switch Realigned

ML19208A102
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/05/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19208A101	List: ML19208A100 ML19208A102 ML19208A103 ML19208A104 ML19208A105
References
LER-79-068-03L, LER-79-68-3L, NUDOCS 7909120566
Download: ML19208A102 (1)

Text

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NRC F ORM 366 V $ NUCLE AR F'E GUL ATORY COMMISSION (7 77)

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1 3 8  % 63 6' OOC %ET NWeE R ** Ev!NT DATt '4 "2 s*F,Ch1 CA't Sc E /ENT DESCRIPTION AND PRch. ADLE CONSEQUENCES h re 2 LQurina Mode 2 operation, Emergency Feedwater flow control valve, 2CV-1025y o

a I 1. from tha electric driven EFW oumo 2P7B. to the "A" steam generator, I o 4 Ifailed to fully close from a Control Room demand signal. The redundant t r s LEFW valves were successfully stroked from the Control Room. This occur  ;

c c Ironce is similar to LER 50-368/79 051.79-043. 79-035, and 78-28. r o 7 IReportable per T.S.6.9.1.9b.  ;

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i ' o LInvestigation revealed that the limit stop switch was out of alignment, ,

i, j i l ! Realianment was made and the valve was successfully stroke tested. The ,

w i valve was declared operable within 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />, meeting the r equirement of j 14 ,

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