ML20038B814

LER 81-026/03L-0:on 811029,reduction Observed in Delta & Average Temp on Loop 23.Caused by Defect in Hot Leg Model 176JA Resistance Temp Detector Circuit.Resistance Temp Element Replaced

ML20038B814
Person / Time
Site:	Indian Point
Issue date:	11/24/1981
From:	Mooney J CONSOLIDATED EDISON CO. OF NEW YORK, INC.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20038B799	List: ML20038B798 ML20038B814
References
LER-81-026-03L, LER-81-26-3L, NUDOCS 8112090125
Download: ML20038B814 (1)

Text

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EVENT DF';CRIPTION A*.D PflOR AGLE CONSE QUENCES

[ o_] 2.] l During normal operation the operator observed a reduction in delta l land average ternpe ra t.n re on Loop 23. That channel was placed in the l o .,

o , [ tripped conditioi and an investigation was conducted. There were no l o s  ; adverse offects of this event as three redundant channels were in servicc) l lo Is l I _._ _ _ _ . _

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42 lNl@ l9 l 3 l 7 l0 l 43 44 4; I cAUSE DESCRIPTION AND CORFiECTIVE AC7 IONS h li l o j l A defect in the hot leg nonemannt Engineering, Model 176JA Resistance

, , l Temperature Detector Circuit was the cause of low readings. The

, , lResistana Tomperature Element das replaced with an installed and wired i

g,;.,;l spare and the channel returned to service. .

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l 7 8 9 STA S  % POWEn OTHE Ft SI A T US O C f DISCOVEft D ESCRIP TION i 5 (_ Ej@ l 1l 0 l 0 l@l U/A_ l W @l Operator Observation ""

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