ML19331B665

LER 80-015/03L-0:on 800707,during Full Power operation,3A Refuel Floor Exhaust Rad Monitor Found Drifting Downscale. Cause Has Not Been Determined.New Gm Tube & Electronic Circuitry Installed

ML19331B665
Person / Time
Site:	Peach Bottom
Issue date:	08/06/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-80-015-03L, LER-80-15-3L, NUDOCS 8008120563
Download: ML19331B665 (1)

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This :Z.a refers to the failure of a Unit, 3 refuel floor exhaust rad nonitor. The governing Tech. Specs. are 3 2.D.2 and Table 3 2.D.

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' ', ] ! Mth Unit 3 at full cover the 3A refhel floor exhaust rad nenitor was i

_Zt fcund drifting downscale. The unit wis placed in a tripped condition 1

.j [] provide half an isolation signal to the one out of two twich lorie. I

]i A new G-:! tube and electronic circuitry was installed, calibrated and 1

~ 7 I tested satisfactorily within three days. l

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Tl Oause cf the failure has not been detemined. All replaced parts were I

, ; 3i satisfac orily bench tested. The G-M tube and the GE sensor corriertor I

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