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Home NRC Library Document Collections Events, Reports Associated with Event Notification Reports 2018

Event Notification Report for May 03, 2018

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
5/2/2018 - 5/3/2018

** EVENT NUMBERS **


53380

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Power Reactor Event Number: 53380
Facility: COMANCHE PEAK
Region: 4     State: TX
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: LOREN STUCK
HQ OPS Officer: OSSY FONT 		Notification Date: 05/03/2018
Notification Time: 18:40 [ET]
Event Date: 05/03/2018
Event Time: 12:20 [CDT]
Last Update Date: 05/03/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
RAY AZUA (R4DO)
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
2 N Y 100 Power Operation 100 Power Operation

Event Text

LOSS OF EMERGENCY ASSESSMENT CAPABILITY

"During planned maintenance on Unit 2 Radiation Monitor 2-RE-4270 (Service Water Train B to Discharge Canal Rad Monitor), at 1220 CDT, several other Unit 2 Radiation Monitors that are used for Emergency Action Level evaluation became nonfunctional for about 1 hour. With these radiation monitors non-functional, all of the Emergency Action Levels associated with these monitors could neither be evaluated nor monitored. This unplanned condition is reportable as a loss of assessment capability per 10 CFR 50.72(b)(3)(xiii). A PC11 computer reboot restored the affected radiation monitors to a functional status.

"The NRC Resident Inspector has been notified."

Page Last Reviewed/Updated Wednesday, March 24, 2021