05000325/LER-1980-017-03, /03L-0:on 800227,during Normal Plant Operation, Discovered Primary Containment Gaseous Monitor Model 5C-2B, Has Unexplained Shift from 1,000 Cpm to 60 Cpm.Caused by Water in Detector Chamber.Detector Dried & Recalibr

/03L-0:on 800227,during Normal Plant Operation, Discovered Primary Containment Gaseous Monitor Model 5C-2B, Has Unexplained Shift from 1,000 Cpm to 60 Cpm.Caused by Water in Detector Chamber.Detector Dried & Recalibr

ML19305C741
Person / Time
Site:	Brunswick
Issue date:	03/24/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19305C740	List: 05000325/LER-1980-017, Forwards LER 80-017/03L-0 05000325/LER-1980-017-03, /03L-0:on 800227,during Normal Plant Operation, Discovered Primary Containment Gaseous Monitor Model 5C-2B, Has Unexplained Shift from 1,000 Cpm to 60 Cpm.Caused by Water in Detector Chamber.Detector Dried & Recalibr
References
LER-80-017-03L, LER-80-17-3L, NUDOCS 8003310350
Download: ML19305C741 (1)

LER-1980-017, /03L-0:on 800227,during Normal Plant Operation, Discovered Primary Containment Gaseous Monitor Model 5C-2B, Has Unexplained Shift from 1,000 Cpm to 60 Cpm.Caused by Water in Detector Chamber.Detector Dried & Recalibr

Event date:
Report date:
3251980017R03 - NRC Website

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8 60 61 DOCK E T NUf "J E H 64 69 EVENT DATE 14 75 HEPORT DAT E B0 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h ITTil looring normal plant operation, the control operator noticed that the primary contain-l 1013 l Iment gaseous monitor CAC-AQll-1260-3, model SC-2B, had an unexplained shift from 1000 l

101dI lcpm to 60 cpm.

The gaseous monitors CAC-AQll-1261-3 and 1262-3 were also inoperable.

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CODE TYPE No.

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[iIil I returned to service satisfactorily.

Engineering is investigating a solution to l

2 l correct the sample flow inoisture problem or to replace the instruments with a more l

[il3)) dependable type, as this is a recurring problem. These monitors undergo calibration l l i 14 I l and preventative maintenance every two weeks.

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80. T.

(919) 457-9521 2,

A.

C. Tollison. Jr.

PHONE:

NAME OF PREPAHER

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