ML19345C010

LER 80-038/03L-0:on 801011,switch on NBI-LIS-101A Found Set at Lower Level than Tech Spec Limit.Caused by Excessive Drift.Switch Returned to Normal Setting & Will Be Replaced

ML19345C010
Person / Time
Site:	Cooper
Issue date:	11/10/1980
From:	Converse W NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19345C007	List: ML19345C006 ML19345C010
References
LER-80-038-03L, LER-80-38-3L, NUDOCS 8012030713
Download: ML19345C010 (1)

Text

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NRC FONA 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l i

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lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 10 l 8i 9l lN l LICENSEE 7

E l C CODE l P l R14l 1l@l 'S 0 l 0l- l UCENSE C l0 lNUYSER 0 l 0 l - l 0 l 025l 0 26l@l4LaCENSE l1l111l1l@l TYPE Jo 67 4AT da l@

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@69 l 11EVFNT0l 1lDATE 11 8I O @ l1 l1 14 75 l1 lDATE REPORT nl Al nl@ 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o l 2 I puring normal operation, the switch on NBI-LIS-101A was found set at a levn1 inuar  !

l0l3l phan the Tech. Spec. limit. The remainder of the low level scram switches (101B.C l iol4lfnd D) were within Tech. Spec. limits. Redundant logic would have :.rised the reac- l l n i s l tor if the scram setpoint had been reached. There was no sinnificant Occurrence re- 1 10161 $ulting from this event. There was no adverse effects to the public hanleh and l I o I 7 I hafety. This event is not renetitive. I 10181 l

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. EVENT YE AR REPORT NO. CODE TYPE NO.

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3J J4 35 36 J1 40 41 42 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h li101tha nnvenn v naal ?RA cuferk ma fn m A en km A ,-4 r+ 4,7 o v- m e e 4 om i o mum mink my i.,_ l I i l i I tediatelv returned to a normal setting. The switch assembiv sriil be rentaced and in-I g ytrument drif t will be closely monitored during future surveillance testing. I Ii t il i l U_1,1,,1 1 1 i s 9 80 ST 5 ', POWER OTHER STATUS G RY OfSCOVERY DESCRIPTION I r I 5 l k_,J@ l0 l 9 l 8 l@l NA l l B l@l Routine Surveillance Testing l ACTIVITY C$ RENT REM ASED OF RELE ASE LOCATION OF RELEASE @

lr i IesI 3b_] @ Lz_l@l AMOUNT OF ACTIVITY NA 44 I

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to is PERSONNEL FMPOSURES NUMBER TYPE DE SCRIPTION D TTl l O I O I Ol@lz l@l NA l

,ERSONNE L ,NJU4 Es NUvaER DESCRiPTiONO l lcll0l0l0l@l NA

. M 9 ii 12 80 l

t US$ OF {pt DAMAGE TO F ACILIf Y fYPE D E SCHtP TION I'lollZ l@l i M t to NA 80 l-p a, lat. CitiPflON -

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