05000324/LER-1981-040-03, /03L-0:on 810303,during Normal Operation,Primary Containment Atmospheric Control Suppression Pool Level Indicator 2-CAC-LI-2601-3 Showed Downscale Level While Level Was Normal.Caused by Blown Fuse in Signal Converter

/03L-0:on 810303,during Normal Operation,Primary Containment Atmospheric Control Suppression Pool Level Indicator 2-CAC-LI-2601-3 Showed Downscale Level While Level Was Normal.Caused by Blown Fuse in Signal Converter

ML19345G566
Person / Time
Site:	Brunswick
Issue date:	03/31/1981
From:	Pastva M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345G558	List: 05000324/LER-1981-040, Forwards LER 81-040/03L-0 05000324/LER-1981-040-03, /03L-0:on 810303,during Normal Operation,Primary Containment Atmospheric Control Suppression Pool Level Indicator 2-CAC-LI-2601-3 Showed Downscale Level While Level Was Normal.Caused by Blown Fuse in Signal Converter
References
LER-81-040-03L, LER-81-40-3L, NUDOCS 8104070533
Download: ML19345G566 (1)

LER-1981-040, /03L-0:on 810303,during Normal Operation,Primary Containment Atmospheric Control Suppression Pool Level Indicator 2-CAC-LI-2601-3 Showed Downscale Level While Level Was Normal.Caused by Blown Fuse in Signal Converter

Event date:
Report date:
3241981040R03 - NRC Website

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8 60 61 DOCKET NUMSER 6E 69 EVENT OATE 14 75 REPQfiT oATE 80 EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h l During normal plant operation while performing routine RTCB surveillance, it was l

o 2 l discovered that primary containment atmospheric control suppression pool level l

r.in si l indicator, 2-CAC-LI-2601-3, showed a downscale level indication while the level was l

o 4 o s i normal. This indicator was then dcciated inoperable and removed from service in I

i accordance with technical specifications. This event did not affect the health or I

o e I safety of the public.

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o, l Technical Specifications 3.3.5.3, 6.9.1.9b l

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lA blown power supply fuse in the signal converter, 2-CAC-LY-2601, caused this event.

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ould 1 E lThe investigation of this event, which included a check for shorts and grounds, Inor determine a -cause for the blown fuse. The blown fuse was then replaced and the l

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