ML19254D813

LER 79-082/03L-0:on 790922,care Protection Calculator C Failed.Caused by Failure of Reactor Coolant Pressure Speed Input.Input Pulse Shaper Contacts Cleaned & Channel C Returned to Svc

ML19254D813
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/24/1979
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19254D808	List: ML19254D807 ML19254D813
References
LER-79-082-03L, LER-79-82-3L, NUDOCS 7910300199
Download: ML19254D813 (1)

Text

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75 REPOHT O ATE 84 0 EVENT DESCRIPTION AND PROS ABLE CONSEQUENCES h o 2 DurW Mode 2 operation, "C" Core Protection Calculator failed. All i 3 i remailing channels were operable. The channel "C" DNBR and LPD trips ,

FETTI 1 were bypassed olacing reactor trip loaic in 2 out of 3. There have not i o 3 l been any similar occurrences. Reportable per T.S. 6.9.1.9b. i lo is i i  !

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i i I pulse shaper contacts were cleaned, CPC channel "C" was functionally i,12; tested and returned to service in uo hours, meeting Action Statement ,

i 3 l T.S. Table 3.3-1, Action 2a. ,

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