05000317/LER-1980-055-03, /03L-0:on 801001,during Normal Operation Containment Atmosphere Particulate RMS Detector Failed.On 801008,channel Failed Again.Caused by Water Inside Sampler Wetting Detector & Connector & Broken Signal Lead

/03L-0:on 801001,during Normal Operation Containment Atmosphere Particulate RMS Detector Failed.On 801008,channel Failed Again.Caused by Water Inside Sampler Wetting Detector & Connector & Broken Signal Lead

ML19339B618
Person / Time
Site:	Calvert Cliffs
Issue date:	10/31/1980
From:	Rizzo P, Wenderlich R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19339B615	List: 05000317/LER-1980-055, Forwards LER 80-055/03L-0 05000317/LER-1980-055-03, /03L-0:on 801001,during Normal Operation Containment Atmosphere Particulate RMS Detector Failed.On 801008,channel Failed Again.Caused by Water Inside Sampler Wetting Detector & Connector & Broken Signal Lead
References
LER-80-055-03L, LER-80-55-3L, NUDOCS 8011070336
Download: ML19339B618 (2)

LER-1980-055, /03L-0:on 801001,during Normal Operation Containment Atmosphere Particulate RMS Detector Failed.On 801008,channel Failed Again.Caused by Water Inside Sampler Wetting Detector & Connector & Broken Signal Lead

Event date:
Report date:
3171980055R03 - NRC Website

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particulate RMS detector failed.

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17171 I on 10/3/80. On 10/8/80. at 1700. the channel failed aaain and was l

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I LER 79-21 (U-2) describes a similar event.

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80-55 DOCKET NO.

50-317 EVENT DATE 10/01/80 REPORT DATE 10/31/80 ATTACHMENT

@SEDESCRIPTIONANDCORRECTIVEACTIONSCONT'D The source of humidity in the sampler lines has not been detemined.

No known leaks in containment were in the vicinity of the sample point. On 10/18/80 after shutdown for refueling, a general inspec-tion for leaks within containment performed by plant operators re-vealed no adjacent leaks.

It is assumed, however, that the general humidity level in containment was elevated by identified leaks in several remote locations. These leaks are being repaired during the current outage. The sampler has continued to function without failure since 10/10/80.

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