ML19257D877

LER 80-009/03L-0:on 800114,during Normal Operation, Containment Atmospheric Monitor CAC-AT-1259-1 Failed Upscale.Caused by Loose Ground Connection on Span Potentiometer.Connection Tightened

ML19257D877
Person / Time
Site:	Brunswick
Issue date:	01/29/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19257D876	List: ML19257D875 ML19257D877
References
LER-80-009-03L, LER-80-9-3L, NUDOCS 8002060683
Download: ML19257D877 (1)

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1. 4 &J bl C#OCK ET NUV9 ER t w4 EVENT DATE EVENT DESCRIPTION Ar40 PROBA8L E CONSEQUENCES h o . During normal plant operation, the control operator noticed that the containment I o 3 l atmospheric monitor CAC-AT-1259-1 had failed upscale. l O l .: )

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_ 21 22 23 24 26 27 28 29 JJ 31 32 ACTION s .* . A E EFFECT SHUTOce.N ATTACMYENT NPAD 4 FRIME COYP. C0YP . E N T TAKEN ACTsON oN PLANT M ETH OD HOURS ** SUSYlTTED 80RV >ud. SUPPU E R VANUFACTUREa l36z l@ l01010101 lNi@ Al@ B l 1 l 3 l 5 lg I3J al@l z l@.

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ab J7 40 41 l42Y l@ 43 44 47 CAUSE CESCol? TION AND CORRECTIVE ACTIONS h i a l The problem was found to be a loose ground connection on the span potentiometer j fTTT1 apOarently caused by normal panel vibration. The connection was tightened and all l i ; I oder connections checked. _ Normal preventive maintenance checks these connections; [

i - theref1re, this is considered an isolated event and no further action is required. l i 2 l l 7 3 9 30 STA S *. POWER OTHER STATUS I O RY DISCOVERY DESCRIPTION Operator Surveillance i

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NAVE Of PitEPAHEft P"ONE: (919) 457-9521