05000325/LER-1980-090-03, /03L-0:on 801101,during Routine Surveillance, Containment Atmospheric Control Monitor 1-CAC-AT-1259 Was Observed Indicating Downscale.Caused by Instrument Drift. Monitor Recalibr Satisfactorily

/03L-0:on 801101,during Routine Surveillance, Containment Atmospheric Control Monitor 1-CAC-AT-1259 Was Observed Indicating Downscale.Caused by Instrument Drift. Monitor Recalibr Satisfactorily

ML19341B276
Person / Time
Site:	Brunswick
Issue date:	12/01/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19341B273	List: 05000325/LER-1980-090, Forwards LER 80-090/03L-0 05000325/LER-1980-090-03, /03L-0:on 801101,during Routine Surveillance, Containment Atmospheric Control Monitor 1-CAC-AT-1259 Was Observed Indicating Downscale.Caused by Instrument Drift. Monitor Recalibr Satisfactorily
References
LER-80-090-03L-01, LER-80-90-3L-1, NUDOCS 8101300572
Download: ML19341B276 (2)

LER-1980-090, /03L-0:on 801101,during Routine Surveillance, Containment Atmospheric Control Monitor 1-CAC-AT-1259 Was Observed Indicating Downscale.Caused by Instrument Drift. Monitor Recalibr Satisfactorily

Event date:
Report date:
3251980090R03 - NRC Website

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UCENSEE EVENT REPORT

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9 LICENSEE CODE 14 1

LICENSE NUMSER 25 26 LICENSE TYPE Jo S7 LAT 68 7

8 CON'T Nu'R$ l L @l 0l 5 l 0 l - l 0 l 3 l 2 l 5 @l 1 l 1 l 0 l 1l 8 l 0 }@l 1 l 2 l 0 l 1 l 8 l 0 l@

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8 60 61 DOCKET NUMSER 68 09 EV ENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o 121 l During routine surveillance, Containment Atmospheric Control Monitor, l 1-CAC-AT-1259, was observed indicating downseale. Similar eve.sts involving g

I o 13 i l o 14 l l this monitor have been reported in the past. This event did not affect the l

l o I s i I health or safety of the public.

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Technical. Specifications 3.6.6.4, 6.9.1.9b l

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8 9 0E OE SU C E COMPONENT CODE SUSCODE S

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9 10 11 12 13 18 19 20 SEQUENTIAL CCCURRENCE REPORT REVl51oM LER EVENT YEAR REPORT NO.

CODE TYPE NO.

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JJ 34 35 36 37 4J 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 l1 I o I l The monitor indicated downseale because it was out of calibration due to instrument l

l,ij__J l drift The monitor was then recalibrated and returned to satisfactorv operation.

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8 9 SA

% POWER OTHER STATUS is RY DISCOVERY DESCRIPTION NA l

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RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA l

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l 1i Ie I W @ W@l PERSONNEL EXPOSURES oESCRiPTiON @

NUMeER TYPE NA l

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8 9 10 ISSUED DE CRIPTION LuSJ LNJ@l l

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7 8 9 10 NAME OF PREPARER PHONE:

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LER ATTACHMENT - RO # l-80-90 Facility: BSEP Unit No. 1 Event Date: 11-1-80 Due to a history of simfiar problems involving this type of monitor 4

a plant modification has been developed to replace these monitors I

with more reliable monitors during the upcoming 1981 refueling outage.

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