NRC Receives Event Notification Involving Comanche Peak Nuclear Power Plant
- March 5, 2019
- 387 views
WASHINGTON, March 4 -- The Nuclear Regulatory Commission issued the following event notification (No. 53906) involving Comanche Peak Nuclear Power Plant in Texas:
REACTOR TRIP DUE TO FEEDWATER ISOLATION VALVE CLOSURE
"At 0317 CST, the Unit 2 Reactor tripped due to Feedwater Isolation Valve (FWIV) 2-04 going closed. All Auxiliary Feedwater Pumps started due to steam generator Lo-Lo levels.
"Unit 2 is being maintained in Hot Standby (Mode 3) in accordance with Integrated Plant Operating Procedure IPO-007B. The Emergency Response Guideline Procedure Network has been exited. Decay heat is being rejected to the Main Condenser via the Steam Dump Valves.
"The cause of the FWIV going closed is currently under investigation."
All control rods fully inserted and the reactor trip was uncomplicated. Unit 2 is in a normal post-trip electrical line-up. There was no impact on Unit 1 due to the Unit 2 reactor trip.
The licensee notified the NRC Resident Inspector.
Event Number: 53906
Facility: COMANCHE PEAK
Unit:   
RX Type:  W-4-LP, W-4-LP
NRC Notified By: CHRISTOPHER METZ
HQ OPS Officer: DONALD NORWOOD
Notification Date: 03/02/2019
Notification Time: 06:12 [ET]
Event Date: 03/02/2019
Event Time: 03:17 [CST]
Last Update Date: 03/02/2019
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization): RICK DEESE (R4DO).