ML20010F946

LER 81-134/03L-0:on 810809,alarms Received at Heating, Ventilation & Air Conditioning Panel in Control Room Indicating Loss of Sample Flow Through Radiation Monitor EMF-43A.Cause Unknown

ML20010F946
Person / Time
Site:	McGuire
Issue date:	09/03/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010F942	List: ML20010F941 ML20010F946
References
LER-81-134-03L, LER-81-134-3L, NUDOCS 8109150140
Download: ML20010F946 (1)

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tvavr :sscaime 4, o ,acsmass .:s.sacusa css i3,2!l While in Mode 3, alarms were rec ed at the HVAC panel in the Control Room indicating a loss of sample flow through a radiation monitor (EMF-43A) for the 3, : , , Control Room outside air intake. The monitor was Aclared inoperable per T.S.

3.3.3.1 which is reportable pursuant to T.S. 6.9.1.13(b). Because of the

,,,,,, availability of a redundant "B" train, in addition to respiratory protective e the I s i r ! L_ quipment provided to Control Room personnel, this incident did not af f ect [

,,,, , safe operation of the plant or the health and safety of the public.

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i, ,aiiThe " .uss cause :sscaimen of this ine_ident As.ois::pasenvs 4,:- eusp, unknown.' Action statement i, ,,,i implemented when the monitor was declared inoperable. Examination of the moni ,

tor revealed the vacuum pump was in the " auto" mode but had stopped. When it

,,,,,; was switched to " manual" mode the pump started. The flow rate, vacuum and alar,m setpoints were checked and found to be properly working. The pump was restarted t't.! l ._ ,

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obi is N/A I e!IIiiiei! il nea e ce amaraasri Phillip B. Nardoci (?04) 373-7432 8109150140 810903 PDR ADOCK 05000369 5 PDR .

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