05000368/LER-1979-007-03, /03L-0 on 790113:during Power Escalation Test, Control Element Assembly Position as Received by Core Protection Computer B Was Incorrect.Caused by Bad Multiplexer Card,Which Was Replaced

/03L-0 on 790113:during Power Escalation Test, Control Element Assembly Position as Received by Core Protection Computer B Was Incorrect.Caused by Bad Multiplexer Card,Which Was Replaced

ML19263C283
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/09/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19263C280	List: 05000368/LER-1979-007, Forwards LER 79-007/03L-0 & LER 79-009/03L-0 05000368/LER-1979-007-03, /03L-0 on 790113:during Power Escalation Test, Control Element Assembly Position as Received by Core Protection Computer B Was Incorrect.Caused by Bad Multiplexer Card,Which Was Replaced 05000368/LER-1979-009-03, /03L-0 on 790121:during Power Escalation Testing, Reactor Protection Sys Channel C Trip Path Solid State Relay Failed,Opening Reactor Trip Path Circuit Breakers 3 & 7.Relay Was Replaced;Within 4-h Circuit Breakers Closed
References
LER-79-007-03L, LER-79-7-3L, NUDOCS 7902130188
Download: ML19263C283 (1)

LER-1979-007, /03L-0 on 790113:during Power Escalation Test, Control Element Assembly Position as Received by Core Protection Computer B Was Incorrect.Caused by Bad Multiplexer Card,Which Was Replaced

Event date:
Report date:
3681979007R03 - NRC Website

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EvtNT DATE 24 75 HFPOH1 0 ATE 80 EVENT DESCRIPTION AND PROBAGLE CONSEQUENCES h 92 Lywrinct the performance of Power Escalation Test TP2.800.01 j

ia l Appendix Q, CPC/COLSS Verification, it was noted that the i,i4, l CEA position as rectived by CPC "B" was incorrect.

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