ML19256A443

LER 78-093/03L-0 on 781202:as a Control Operator Was Inserting Control Rods to Decrease Reactor Power,It Was Observed That Position Indications 18 & 28 for Control Rod 02-23 Were Inoperable,Due to Fault Inside Containment

ML19256A443
Person / Time
Site:	Brunswick
Issue date:	01/03/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19256A440	List: ML19256A439 ML19256A443
References
LER-78-093-03L, LER-78-93-3L, NUDOCS 7901080145
Download: ML19256A443 (1)

Text

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EVENT DESCRIPTION A D PROBAULE C N ENCES o 2 lA Control Operator was inserting control rods to decrease reactor power. It was I o 3 jobserved that position indications 18 and 28 for control rod 02-23 were inoperable. l o 4 l(Technical Specification 3.1.3.7)  !

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l Control rod 02-23 was moved to a position with an operable reed switch. Investication l 11 11 I l determined the cause for the inoperable 18 and 28 positions to be inside the prinarv I

, , l containment. The pos.ition indication will be restored to normal during the next Unit 11 g g l cold shutdown. Due to the large number of reed switches in use on both units l i 4  !(14,248 Reed Switches), this is considered an isolated event and no further correctivo l 7 8 9 action is required. so F ACILI TY , VE THOD CF ST AlUS . POV.E H OTHEH ST ATLS CH,COVERY D:SCOVEHY DESCn'PTION i s yQ l 0 l 5 l 1 @l NA l B l@l Operator Observation

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NAM OF PREPAREn A. C. Tollison, Jr. PHONE:

919-457-6701