Event Notification Report for January 02, 2020
U.S. Nuclear Regulatory Commission Event Reports For ** EVENT NUMBERS ** |
54460 |
Power Reactor | Event Number: 54460 |
Facility: COMANCHE PEAK Region: 4 State: TX Unit: [] [2] [] RX Type: [1] W-4-LP,[2] W-4-LP NRC Notified By: CHRIS METZ HQ OPS Officer: BRIAN LIN |
Notification Date: 01/01/2020 Notification Time: 16:57 [ET] Event Date: 01/01/2020 Event Time: 12:53 [CST] Last Update Date: 01/01/2020 |
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): GREG WARNICK (R4DO) |
Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | |||||||
2 | M/R | Y | 100 | Power Operation | 0 | Hot Standby |
Event Text
MANUAL REACTOR TRIP AND SPECIFIED SYSTEM ACTUATION "At 1253 [CST] Unit 2 Reactor was manually tripped due to a trip of both Main Feed Pumps. During an evolution to secure Circulating Water Pump 2-01, vacuum was reduced in the auxiliary condensers for both Main Feed Pumps causing both Main Feed Pumps to trip. Both Motor Driven and the Turbine Driven 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-0078. The Emergency Response Guideline Network has been exited. Decay heat is being rejected to the Main Condenser via the Steam Dump Valves." The licensee notified the NRC Resident Inspector. |
Page Last Reviewed/Updated Wednesday, March 24, 2021
Page Last Reviewed/Updated Wednesday, March 24, 2021