ML20010F756

LER 81-130/03L-0:on 810805,ionization Smoke Detector in Fire Zone 72 Failed Channel Functional Test.Caused by Deterioration of Integral Printed Circuitry Due to Boric Acid Deposits in Honeywell Detector,Type TC 100A

ML20010F756
Person / Time
Site:	McGuire
Issue date:	09/01/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010F753	List: ML20010F752 ML20010F756
References
LER-81-130-03L, LER-81-130-3L, NUDOCS 8109110292
Download: ML20010F756 (1)

Text

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1.: ;.jlfailed its channel functional test (did not alarm when smoke was introduced), 9

,,,,, ,and subsequently was declared inoperable per T.S. 3.3.3.7 which is reportable

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!,.,i; zone while the detector was known to be inoperable, and the 3 remaining detect-ors in the zone were operable, this incident had no effect on the health 6 setety

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ti aifExamination of the detector (Honevuell, Type TC 100A) revealed deterioration of

,, ,,,;the integral printed circuitry due to boric acid deposits. The contamination ,

probably occurred during a testing phase of construction when leaks were dis-

,, ,;,gc cered and repaired as systems were pressurized. The detector was replaced anp r T:n I tested satisfactorily. i cri.emrrarus @ EiEIN T I7 s,ewea it i s i LX l@ l 0f 0) -Ogl Mode 5

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Phillip B. Nardoci (704) 373-7432 8109110292 810901 PDR ADOCK 05000369 S PDR

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