Event Notification Report for July 27, 2019
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/26/2019 - 07/27/2019
EVENT NUMBERS
54185
54185
Power Reactor
Event Number: 54185
Facility: PERRY
Region: 3 State: OH
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: DAVID DUESING
HQ OPS Officer: JEFFREY WHITED
Region: 3 State: OH
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: DAVID DUESING
HQ OPS Officer: JEFFREY WHITED
Notification Date: 07/27/2019
Notification Time: 22:31 [ET]
Event Date: 07/27/2019
Event Time: 19:29 [EDT]
Last Update Date: 07/27/2019
Notification Time: 22:31 [ET]
Event Date: 07/27/2019
Event Time: 19:29 [EDT]
Last Update Date: 07/27/2019
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(2)(iv)(A) - ECCS INJECTION
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(2)(iv)(A) - ECCS INJECTION
Person (Organization):
MICHAEL KUNOWSKI (R3DO)
MICHAEL KUNOWSKI (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A/R | Y | 98 | Power Operation | 0 | Hot Shutdown |
AUTOMATIC REACTOR SCRAM DUE TO MAIN TURBINE TRIP
"At 1929 EDT on 7/27/2019, with the Unit in Mode 1 at 98 percent power, the reactor automatically scrammed due to a Main Turbine Trip. The trip was not complex, with all systems responding normally post-trip. Main Steam Isolation Valves (MSIVs) were manually closed to prevent exceeding Reactor Pressure Vessel Cooldown Rate. Rector Core Isolation Cooling (RCIC) was manually initiated to stabilize Reactor Vessel Water Level and Pressure following MSIV closure. The Main Condenser and Feedwater are available.
"Operations responded and stabilized the plant. Reactor water level is being maintained via RCIC. Decay heat is being removed by discharging steam to the Main Condenser and RCIC.
"The cause of the Main Turbine Trip is currently under investigation."
The site is in a normal electrical lineup.
The licensee notified the NRC Resident Inspector.
"At 1929 EDT on 7/27/2019, with the Unit in Mode 1 at 98 percent power, the reactor automatically scrammed due to a Main Turbine Trip. The trip was not complex, with all systems responding normally post-trip. Main Steam Isolation Valves (MSIVs) were manually closed to prevent exceeding Reactor Pressure Vessel Cooldown Rate. Rector Core Isolation Cooling (RCIC) was manually initiated to stabilize Reactor Vessel Water Level and Pressure following MSIV closure. The Main Condenser and Feedwater are available.
"Operations responded and stabilized the plant. Reactor water level is being maintained via RCIC. Decay heat is being removed by discharging steam to the Main Condenser and RCIC.
"The cause of the Main Turbine Trip is currently under investigation."
The site is in a normal electrical lineup.
The licensee notified the NRC Resident Inspector.