ML19210D114

LER 79-019/03L-0:on 791012,condensate Isolation Valve CV-1065 to Quench Tank Failed to Close from Control Panels C-16 & 18.Caused by Burnt Out Solenoid Coils.Replaced AC Coils by Coils & Tested Valve

ML19210D114
Person / Time
Site:	Arkansas Nuclear
Issue date:	11/14/1979
From:	Bramlett L ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19210D107	List: ML19210D106 ML19210D114
References
LER-79-019-03L-01, LER-79-19-3L-1, NUDOCS 7911200548
Download: ML19210D114 (1)

Text

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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8 8 60_ 65 DocKg7Nuusta 68 to EvtNT DATE 14 FS MEPORT DATE EVENT DESCRIPTION ANO PRO 8ASLE CONSEQUENCES h ITTTl I Durinc condensate addition to Ouench Tank. CV-1065 (the condensate isola-1 rFTT1 I tion valve to the Quench Tank) failed to close from Control panels ,

, , C-16 and C-18. Instrument air to the valve was secured and the valve ,

g , failed in the Es. position. Unit power operation was continued per ,

o a T.S. 3.6.6. Reporta_ble e per T.S. 6.12.3.2(b). No similar occurrences. I o > I I O M l l

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o l Twn entennic! cnile (ASCO 9/N 26n77 B1 on CV-1065 were burned out. Thesel m coils were 125 volt A.C. coils, while this valve is fed by 125 volt D.C. i i power. Previously this solenoid valve operator had been replaced. The ,

rTTTl I correction was made by replacine the A.C. coils with D.C. coils. The t

, , i valve was successfully tested per T.S. 3.6.6. Other valves were checked

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