ML19209B733

Supplementary LER 79-043/03X-1:on 790609,control Rod 18-23 Had No Indication at Notch 30.Caused by Defective Reed Switch.Switch Replaced.May Be Generic Problem

ML19209B733
Person / Time
Site:	Brunswick
Issue date:	09/28/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19209B724	List: ML19209B723 ML19209B733
References
LER-79-043-03X, LER-79-43-3X, NUDOCS 7910100370
Download: ML19209B733 (1)

Text

NRC FORM 366 . . L ULA RY COMMISSI N LICENSEE EVENT REPORT PREVIOUS REPORT DATE: 6-27-79 CONTROL BLOCK: l l l l l l h IPLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) loltlIN I 8 9 lC LICENSEE El P 1lhl0 0 l -l 0 lLICENSE nl CODE 14 15 0 0 0 0 - 0l0l@l4 NUMBER 25 2ti 1

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CON'T o i 5g"C I tl@l 0l 5101 - 10 3121 s l@l 69016 I O 91 7 9J@ 0 1 9 l2 8l7l9 g 80 I 8 60 61 DowK ET NUMBER fA EVENT DATE 14 76 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 lWhile performing a normal reactor startup, control rod 18-23 had no indication at j o 3 l notch 30. 1 o 4 [ Technical Specification 3.1.3.7, 6.9.1.9b l 0 5 l l 0 6 l 0 7 l l 0 H l ]

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ldi N l@ [Y lg l N lg 42 43 lG[0 44 8 l 0 lg 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o lThe reed switch for notch 30 indication was found de fective and replaced. The system l lt l i j lwas tested and returned to service satis fac torily. Due to an increasing number of in-i 2 Idicating problems, an Engineering Work Request has been written to determine if there j i 3 is a generic problem with the position indicating sysCem. l 4 l 7 8 9 80 STA S N PO/;E n OTHER STATUS ISCO RY DISCOVERY DESCHiPTION i s C jh l 0 l 0 l 0 l@lNA l l A l@l Operator Surveillance l ACTIVITY C TENT RELEASED OF RE LE ASE AYOUNT OF ACTIVITY LCC ATION OF RELE ASE lilol IZ l@

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