Event Notification Report for March 25, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/24/2020 - 03/25/2020
Power Reactor
Event Number: 54607
Facility: SALEM
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JASON MORGAN
HQ OPS Officer: BRIAN LIN
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JASON MORGAN
HQ OPS Officer: BRIAN LIN
Notification Date: 03/25/2020
Notification Time: 03:30 [ET]
Event Date: 03/25/2020
Event Time: 00:56 [EDT]
Last Update Date: 03/25/2020
Notification Time: 03:30 [ET]
Event Date: 03/25/2020
Event Time: 00:56 [EDT]
Last Update Date: 03/25/2020
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
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
CHRISTOPHER CAHILL (R1DO)
CHRISTOPHER CAHILL (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 17 | Power Operation | 0 | Hot Standby |
MANUAL TRIP DUE TO FAILURE OF A ROD CONTROL MOTOR GENERATOR
"At 0056 EDTon March 25, 2020, with Unit 1 at 17 percent power during a unit power ascension, the reactor was manually tripped due to the failure of the 11 Rod Control Motor Generator caused by a malfunction of its associated Voltage Regulator. The trip was not complex, with all systems responding normally post-trip. An actuation of the Auxiliary Feedwater system occurred following the manual reactor trip as expected due to low level in the steam generators. The unit is stable in Mode 3. Decay heat is being removed by the Atmospheric Steam Dumps and Auxiliary Feedwater System. Salem Unit 2 was not affected.
"Due to the actuation of the Reactor Protection System actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B), This event is also being reported as an eight hour non-emergency notification in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the Auxiliary Feedwater System.
"There was no impact to the health and safety of the public or plant personnel.
"The NRC Resident lnspector has been notified."
"At 0056 EDTon March 25, 2020, with Unit 1 at 17 percent power during a unit power ascension, the reactor was manually tripped due to the failure of the 11 Rod Control Motor Generator caused by a malfunction of its associated Voltage Regulator. The trip was not complex, with all systems responding normally post-trip. An actuation of the Auxiliary Feedwater system occurred following the manual reactor trip as expected due to low level in the steam generators. The unit is stable in Mode 3. Decay heat is being removed by the Atmospheric Steam Dumps and Auxiliary Feedwater System. Salem Unit 2 was not affected.
"Due to the actuation of the Reactor Protection System actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B), This event is also being reported as an eight hour non-emergency notification in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the Auxiliary Feedwater System.
"There was no impact to the health and safety of the public or plant personnel.
"The NRC Resident lnspector has been notified."
Power Reactor
Event Number: 54611
Facility: DAVIS BESSE
Region: 3 State: OH
Unit: [1] [] []
RX Type: [1] B&W-R-LP
NRC Notified By: ANDY MILLER
HQ OPS Officer: KERBY SCALES
Region: 3 State: OH
Unit: [1] [] []
RX Type: [1] B&W-R-LP
NRC Notified By: ANDY MILLER
HQ OPS Officer: KERBY SCALES
Notification Date: 03/25/2020
Notification Time: 15:28 [ET]
Event Date: 03/25/2020
Event Time: 12:40 [EDT]
Last Update Date: 03/25/2020
Notification Time: 15:28 [ET]
Event Date: 03/25/2020
Event Time: 12:40 [EDT]
Last Update Date: 03/25/2020
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Person (Organization):
JOHN HANNA (R3DO)
JOHN HANNA (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 0 | Startup | 0 | Hot Standby |
MANUAL TRIP DUE TO LOSS OF REACTOR COOLANT PUMPS
"At 1240 [EDT] on March 25, 2020, with the Unit in Mode 2 at approximately 0% [zero percent] power starting up from a refueling outage, the reactor was manually tripped due to a trip of two of four Reactor Coolant Pumps. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by discharging steam to the main condenser. The cause of the Reactor Coolant Pump trips is under investigation.
"Due to the Reactor Protection System actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
"At 1240 [EDT] on March 25, 2020, with the Unit in Mode 2 at approximately 0% [zero percent] power starting up from a refueling outage, the reactor was manually tripped due to a trip of two of four Reactor Coolant Pumps. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by discharging steam to the main condenser. The cause of the Reactor Coolant Pump trips is under investigation.
"Due to the Reactor Protection System actuation while critical, this event is being reported as a four-hour, non-emergency notification per 10 CFR 50.72(b)(2)(iv)(B).
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
Independent Spent Fuel Storage Installation
Event Number: 54612
Rep Org: SAN ONOFRE
Licensee: SOUTHERN CALIFORNIA EDISON COMPANY
Region: 4
City: SAN CLEMENTE State: CA
County: SAN DIEGO
License #: GL
Agreement: Y
Docket: 72-41
NRC Notified By: PHYLLIS DOMINGUEZ
HQ OPS Officer: BRIAN LIN
Licensee: SOUTHERN CALIFORNIA EDISON COMPANY
Region: 4
City: SAN CLEMENTE State: CA
County: SAN DIEGO
License #: GL
Agreement: Y
Docket: 72-41
NRC Notified By: PHYLLIS DOMINGUEZ
HQ OPS Officer: BRIAN LIN
Notification Date: 03/26/2020
Notification Time: 01:15 [ET]
Event Date: 03/25/2020
Event Time: 20:00 [PDT]
Last Update Date: 03/26/2020
Notification Time: 01:15 [ET]
Event Date: 03/25/2020
Event Time: 20:00 [PDT]
Last Update Date: 03/26/2020
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
RAY KELLAR (R4DO)
RAY KELLAR (R4DO)
OFFSITE NOTIFICATION FOR SEWAGE RELEASE
"On 3/25/2020, SONGS [San Onofre Nuclear Generating Station] made required formal notifications to the California Office of Emergency Services at 2107 PDT, the San Diego Regional Water Quality Review Board at 2123 PDT, the San Diego Department of Environmental Health (CUPA) [Certified Unified Program Agency] at 2104 PDT, the National Response Center (NRC) at 2115 PDT, and the San Diego Coast Guard at 2149 PDT, concerning an approximate 7,000 gallon release of partially treated sewage to the Pacific Ocean.
"Both Sewage Treatment Plant effluent pumps were shut down and a state certified vendor is working to bring the treatment plant back to service."
"On 3/25/2020, SONGS [San Onofre Nuclear Generating Station] made required formal notifications to the California Office of Emergency Services at 2107 PDT, the San Diego Regional Water Quality Review Board at 2123 PDT, the San Diego Department of Environmental Health (CUPA) [Certified Unified Program Agency] at 2104 PDT, the National Response Center (NRC) at 2115 PDT, and the San Diego Coast Guard at 2149 PDT, concerning an approximate 7,000 gallon release of partially treated sewage to the Pacific Ocean.
"Both Sewage Treatment Plant effluent pumps were shut down and a state certified vendor is working to bring the treatment plant back to service."