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

/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

ML19263C288
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-79-009-03L, LER-79-9-3L, NUDOCS 7902130196
Download: ML19263C288 (1)

LER-1979-009, /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

Event date:
Report date:
3681979009R03 - NRC Website

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s 79 M SOH1 CATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h i During Power Escalation Te.7, ting, Mode 1 operation, channel "C" RPS trip p oi2 ia i path solid state relav failed, openina reactor trip path circuit j

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..r..E or u n E u g 7902130196