ML19256G500

LER 79-090/03L-0:on 791125,during Mode 3 Operation,Emergency Feedwater Flow Control Valve 2CV-1025-1 Failed to Close on Demand from Control Room.Caused by Valve Operator Hydraulic Sys Being Low on Fluid.Sys Filled

ML19256G500
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/21/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19256G491	List: ML19256G490 ML19256G492 ML19256G496 ML19256G500 ML19256G503 ML19256G505
References
LER-79-090-03L, LER-79-90-3L, NUDOCS 7912310399
Download: ML19256G500 (1)

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NRC F ORM 3E6 U. 5 NUCLE AR REGUL ATORY COMh81SSION (7 77)

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HFPOHTDATE 7 60 61 DOCsLET NusegER EVENT DATE FS SC EVENT OESCRIPTION ANO PROS ABLE CONSEQUENCES h foTO I Durino Mode 3 operation, with the electric driven Fmargency Feedwater i o 2 I pumo, 2P78, in service as an auxiliary feedwater pump for normal startup I o 4 Steam Generator food. FFW flow cnntrn1 valvo. PrV-1025-1. failed tn clnspi n s I on demand from the Control Room. The valve failed in the EFW, or safe, i o s I cosition. All redundant rFW valves worn surcossfully strnked fron1 tho _ __I fTTTII Control Room. This occurrenca is similar to LFR 50-368/79-089. 79-0E8. I o o i 79-043. Other occurrences involving 2CV-1025-1 are 50-368/79-068,79-054,,

'79-051, 7,9,E035. M-p28,gnd,78-009. Reportable per J,,,S. 64,1.9.b. "

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