ML20040D755

LER 81-067/03L-0:on 811220,during Maint Testing,Scram Pilot Solenoid Valve 118 (for Control Rod Drive 14-23) Failed When Rod Was Individually Scrammed.No Plausible Cause Could Be Postulated.All Scram Solenoids Will Be Verified Operable

ML20040D755
Person / Time
Site:	Oyster Creek
Issue date:	01/20/1982
From:	Pirooz H GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20040D747	List: ML20040D746 ML20040D755
References
LER-81-067-03L, LER-81-67-3L, NUDOCS 8202020220
Download: ML20040D755 (1)

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LVLN f CCG,CH4PT10N AND # GOUA01.C CONSCOUCNCCS h3 Hij l During equipTient maintaiance testing the scram pilot solenoid valve 118

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g; (for Control Rod Drive 14-23) failed when the rod was individually scram-med.' Since a scram signal would have also deenergized the back-up scram

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valves and this redundant system would have scramned the rods, the safety Z&] L ggnificance is considered minimal.

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14 j L All scram solenoids will be verified operable, prior to plant  ;

g; startup by individually scram testing each CRD.

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