05000333/LER-1981-030-03, /03L-0:on 810401,rod Sequence Control Sys Did Not Allow Normal Control Rod Movement.Caused by Failed Reed Switches in Control Rod Position Probes.Probes Replaced

/03L-0:on 810401,rod Sequence Control Sys Did Not Allow Normal Control Rod Movement.Caused by Failed Reed Switches in Control Rod Position Probes.Probes Replaced

ML19343D620
Person / Time
Site:	FitzPatrick
Issue date:	05/01/1981
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19343D619	List: 05000333/LER-1981-030, Forwards LER 81-030/03L-0 05000333/LER-1981-030-03, /03L-0:on 810401,rod Sequence Control Sys Did Not Allow Normal Control Rod Movement.Caused by Failed Reed Switches in Control Rod Position Probes.Probes Replaced
References
LER-81-030-03L, LER-81-30-3L, NUDOCS 8105050581
Download: ML19343D620 (1)

LER-1981-030, /03L-0:on 810401,rod Sequence Control Sys Did Not Allow Normal Control Rod Movement.Caused by Failed Reed Switches in Control Rod Position Probes.Probes Replaced

Event date:
Report date:
3331981030R03 - NRC Website

text

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8 60 61 COCKET NUMBER 68 69 EVENT 0 ATE 74 75 REPORT OATE 40 EVENT DESCRIPTICN AND PROSABLE CONSEQUENCtS h Io12IlDuring routine shutdown operation, the Rod Secuence Control System (RSCS) would

- l Io t al lnot allow r.ormal control rod movement during a portion of the shutdown.

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1 o 141 l was reoui red to be operable by TS 3.3.B.3.

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10151 I control rod Insert) 7n. the shutdown.<as comoleted bv initlarina I

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l1 t i j t that failed reed switches in control rod position probes would not allow RSCS I

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,,,2i l,i3j land subsequent test of RSCS resulted in satisfactory ooeration.

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