ML19284A386

LER 79-015/03L-0 on 790128:failure of Core Protection Computer D & C,Resulting in Respective Channel Trips;One Caused by Tripped Power Supply & Other Appears non-repetitive.Both Channels Were Successfully Restarted

ML19284A386
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/27/1979
From:	Shirely C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19284A385	List: ML19284A384 ML19284A386
References
LER-79-015-03L, LER-79-15-3L, NUDOCS 7903060218
Download: ML19284A386 (1)

Text

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[" I 2 I DL_uring Power Escalation Tes tint @, steady  ; tate Mode 1 operation, U, C ,, D ,,

__J g g [ failed. Channel "C" failed wnile CPC "D" was in test. Both resulted g

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[in D!mR and LPD trips in their respective PPS channelt. Channels "C" &

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E g ("D" were declared inoperable and appropriate trips were bypassed. Similary 1.1'. lid Lto MPJ0-K3Z7h0.lL_and 79-006. Repor table mer T .s . 6. 9.1.9. (b). i

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1. D LNJbl10 NA 1 IliI 11111t iI i, 4 de v NAW C,F Pr*E 6 AH 8 0 Chris N. Shively ,, ,, 501/968-2519 7903060 A /V