ML20038B456

LER 81-050/03L-0:on 810715,reactor Bldg Ventilation Duct Radiation Monitor Showed Abnormal Spiking Which Initiated Emergency Ventilation Sys.Caused by Malfunctioning sensor-convertor Unit.Unit Replaced & Calibr

ML20038B456
Person / Time
Site:	Nine Mile Point
Issue date:	11/25/1981
From:	Mclaughlin K NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20038B445	List: ML20038B444 ML20038B456
References
LER-81-050-03L, LER-81-50-3L, NUDOCS 8112080303
Download: ML20038B456 (1)

Text

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. I O l 2j lDurinn normal operation No. 11 Reactor Buildinn Ventilation Duct Radiation Monitor i O 3 l experiencedo ' ff-normal spiking which initiated the Emergency Ventilation System. This l l O 14 l Qs reported under Tech. Spec. 3.6.2, which requires initiatinn of the Emercency Ventila-l O s don System upon a signal greater than the setpoint of 5 mr/hr. Because the system l l O is l [nperated as it was designed, safety consequences were minimal. I 10171 I l l0l8l l 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SU8 CODE COMPONENT CODE SU8 CODE SUSCOOE

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