ML19270F232

LER 78-034/03L-0 on 781230:during Mode 3,all Control Element Assemblies Fully Inserted, & Signal Leads from Upper & Lower Detector Chambers of B Linear Safety Channels Found to Be Swapped.Chamber Leads Were Reconnected Correctly

ML19270F232
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/29/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19270F230	List: ML19270F229 ML19270F231 ML19270F232
References
LER-78-034-03L, LER-78-34-3L, NUDOCS 7902050120
Download: ML19270F232 (1)

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FVENT DATE HEPOH1 OAYE edJ EVENT DESCRIPTION AND PROB ADLE CONSEQUENCES h o 21 Durine Mode 3 operation, all CEA's fully inserted. sinnal leads from i 10121 1 upper and lower detector chambers of "B" Linear Safety channel NI's o 4 l were found to be swapped. A failure could have caused a loss of n s I redundancy (i. c. S. A.M. for the affected channel would have been i

1016 I I inverted). No similar occurrences. Reportable per T.S.6.9.1.9(c). 1 IO Iil i i O s ! I

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