Event Notification Report for August 25, 2019
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/24/2019 - 08/25/2019
EVENT NUMBERS
54239
54239
Power Reactor
Event Number: 54239
Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: CLIFFORD STEINER
HQ OPS Officer: OSSY FONT
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: CLIFFORD STEINER
HQ OPS Officer: OSSY FONT
Notification Date: 08/25/2019
Notification Time: 15:51 [ET]
Event Date: 08/25/2019
Event Time: 11:02 [CDT]
Last Update Date: 08/25/2019
Notification Time: 15:51 [ET]
Event Date: 08/25/2019
Event Time: 11:02 [CDT]
Last Update Date: 08/25/2019
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
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
KENNETH RIEMER (R3DO)
KENNETH RIEMER (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A/R | Y | 100 | Power Operation | 0 | Hot Shutdown |
AUTOMATIC SCRAM DUE TO MAIN GENERATOR GROUND FAULT RELAY
"On August 25, 2019, at 1102 [CDT], Quad Cities Unit 1 experienced an automatic scram from 100 percent power. All rods fully inserted and there were no complications. The trip was initiated from a main generator ground fault relay. Troubleshooting of the fault is in progress. All systems responded as designed. There were no systems inoperable and no TS [Technical Specification] action statements were in progress prior to the Reactor Scram. Reactor water level dropped below the Group 2 and Group 3 Reactor Water Level Isolation set-points as expected, and recovered via the Feedwater system. Standby Gas Treatment System auto started and Reactor Building Ventilation Isolation occurred as expected. Unit 1 remains in Mode 3.
"Decay heat is being removed using the steam bypass valves to the condenser and the safety relief valves did not lift as a result of the trip.
"This report is being made in accordance with 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A).
"The NRC Resident Inspector has been notified."
Unit 2 was not affected.
"On August 25, 2019, at 1102 [CDT], Quad Cities Unit 1 experienced an automatic scram from 100 percent power. All rods fully inserted and there were no complications. The trip was initiated from a main generator ground fault relay. Troubleshooting of the fault is in progress. All systems responded as designed. There were no systems inoperable and no TS [Technical Specification] action statements were in progress prior to the Reactor Scram. Reactor water level dropped below the Group 2 and Group 3 Reactor Water Level Isolation set-points as expected, and recovered via the Feedwater system. Standby Gas Treatment System auto started and Reactor Building Ventilation Isolation occurred as expected. Unit 1 remains in Mode 3.
"Decay heat is being removed using the steam bypass valves to the condenser and the safety relief valves did not lift as a result of the trip.
"This report is being made in accordance with 10 CFR 50.72(b)(2)(iv)(B) and 10 CFR 50.72(b)(3)(iv)(A).
"The NRC Resident Inspector has been notified."
Unit 2 was not affected.