05000335/LER-1980-065-03, /03L-0:on 801121,containment Fire Protection Zone 14A Went Into Invalid Alarm State.Caused by One Detector Shorting Out Due to Condensation.Detector Removed

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/03L-0:on 801121,containment Fire Protection Zone 14A Went Into Invalid Alarm State.Caused by One Detector Shorting Out Due to Condensation.Detector Removed
ML17266A388
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 12/19/1980
From: Pace P
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17209A532 List:
References
LER-80-065-03L, LER-80-65-3L, NUDOCS 8101130372
Download: ML17266A388 (1)


LER-1980-065, /03L-0:on 801121,containment Fire Protection Zone 14A Went Into Invalid Alarm State.Caused by One Detector Shorting Out Due to Condensation.Detector Removed
Event date:
Report date:
3351980065R03 - NRC Website

text

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tiated, containment temperatures were monitored once per hour until the into an invalid alarm state.

Action in accordance with TS 3.3.3.7 was ini-

~O failed'etector was removed and the zone was restored to operable statys in about

3. hours.

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A redundant zone was available.

This was the first occurrence of this type.

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~o 4l 48 43 44 43 CAUSE 0 SCRIPTIOaal ANO CorIRECa IVE AC ~ IONS Q25 Containment fire protection zone 14A went into alarm due to one detector out of 20 being aborted out by condensation.

The shorted detector, a Honey-well TC 100A, was removed and the zone became operable.

A new detector wi113 be installed at the next outage of sufficient duration.

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