ML19263C288

LER 79-009/03L-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

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: ML19263C279 ML19263C283 ML19263C288
References
LER-79-009-03L, LER-79-9-3L, NUDOCS 7902130196
Download: ML19263C288 (1)

Text

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? 8 6u 61 COCn E T NVV2 E R W W EVENT DATE 79 M SOH1 CATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h oi2 i During Power Escalation Te.7, ting, Mode 1 operation, channel "C" RPS trip p ia i path solid state relav failed, openina reactor trip path circuit j io 4 I hmakerc; 3 and 7. No consecuences as channel was in tripoed condition. l is i No similar occurrences. Reportable per T.S.6.9.1.9 (b) .  ;

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o The Solid State Relay was re aced and the reactor trip circuit I

ii i breakers 3 and 7 were closed within four hours of the failure. i m i Recuirements of Action Staterent T.S. Table 3.3-1 fi4 were met.

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..r..E or u n E u g Chris N. Shively .,

501/968-2519 7902130196