05000324/LER-1980-096-03, /03L-0:on 801107,primary Containment Atmospheric Monitor 2-CAC-AT-1263 Declared Inoperative Due to Erratic Indications.Caused by Instrument Drift & Defective Monitor Photohelic Unit.Analyzer Calibr & Unit Replaced

/03L-0:on 801107,primary Containment Atmospheric Monitor 2-CAC-AT-1263 Declared Inoperative Due to Erratic Indications.Caused by Instrument Drift & Defective Monitor Photohelic Unit.Analyzer Calibr & Unit Replaced

ML19351E568
Person / Time
Site:	Brunswick
Issue date:	12/04/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19351E564	List: 05000324/LER-1980-096, Forwards LER 80-096/03L-0 05000324/LER-1980-096-03, /03L-0:on 801107,primary Containment Atmospheric Monitor 2-CAC-AT-1263 Declared Inoperative Due to Erratic Indications.Caused by Instrument Drift & Defective Monitor Photohelic Unit.Analyzer Calibr & Unit Replaced
References
LER-80-096-03L, LER-80-96-3L, NUDOCS 8012100459
Download: ML19351E568 (2)

LER-1980-096, /03L-0:on 801107,primary Containment Atmospheric Monitor 2-CAC-AT-1263 Declared Inoperative Due to Erratic Indications.Caused by Instrument Drift & Defective Monitor Photohelic Unit.Analyzer Calibr & Unit Replaced

Event date:
Report date:
3241980096R03 - NRC Website

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60 El DOCKET NUMSER 64 69 EVENT DATE 74 13 REPORT 0 ATE 80 EVENT CESCRIPTION AND PROBABLE CONSEQUENCES h ITITl I While performing a periodic calibration check of the nrhng cenenin-one ne-nner4r I

[ o i a 1 l monitor, 2-CAC-AT-1263, it was discovered the monitor was inoperative due to l

10141 l erratic indications. This event did not affect the health or safety of the public.

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33 34 JS 36 3J 40 41 42 43 44 47 CAUSE CESCRIPTION AND CORRECTIVE ACTIONS h li n o l l The monitor indicated erratically because the monitor oxygen analyzer was out of I

g [ calibration due to instrument drift.

In addition a defective monitor photohelic I

i, i,; j unit was also discovered during the investigation. The photohelic unit was replaced I l and the menitor oxygen analyzer was calibrated which returned the monitor to normal l

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I LER ATTACHMENT - RO # 2-80-96 Facility: BSEP Unit No. 2 Event Date: 11-07-80 A check of the other primary containment atmospheric monitors did not reveal any problems. Due to a history of similar problems involvi.ig this type of 1

monitor, these monitors will be replaced with others of a more reliable design during the next scheduled refueling outage.

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