ML19263C283

LER 79-007/03L-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

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: ML19263C279 ML19263C283 ML19263C288
References
LER-79-007-03L, LER-79-7-3L, NUDOCS 7902130188
Download: ML19263C283 (1)

Text

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LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK-L. I I I I I e@l (PLEASE PRINT OR TYPE ALL RECUtRED INFORMATIONI F

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DOCL E T sVMc E R Gd is .' 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. _

CPC "B" l

Lwan declared inoperable and remained in bypass following the; in I completion of Anoendix Q. There have been no similar ,

cii i necurrei en Reportable Der T . S . 6. 9.1. 9 (b) .  ;

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4I C AUSE DESCR. TION AND CORREC rlVE ACTIONS ??

. iaIi Tnvestigation revealed a bad multiplexer card, which was  ;

i- I reolaced. CPC "B" was satisfactorily tested and declared ,

, I operable within eight hours of the occurrence. The I i- 3 I recTuirements of Action Statement T.S. Table 3.3-1 # 2 were met, l'ialI 8 9 STA 'L NPOWEH OT ** F d 5 T A T U# 5 .

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