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 **

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

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