Event Notification Report for May 11, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/10/2015 - 05/11/2015
Power Reactor
Event Number: 51064
Facility: BEAVER VALLEY
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: MARK PHILLIPS
HQ OPS Officer: DANIEL MILLS
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: MARK PHILLIPS
HQ OPS Officer: DANIEL MILLS
Notification Date: 05/11/2015
Notification Time: 20:38 [ET]
Event Date: 05/11/2015
Event Time: 16:29 [EDT]
Last Update Date: 05/11/2015
Notification Time: 20:38 [ET]
Event Date: 05/11/2015
Event Time: 16:29 [EDT]
Last Update Date: 05/11/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
BLAKE WELLING (R1DO)
BLAKE WELLING (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
LOSS OF POWER TO DIGITAL RADIATION MONITORING SYSTEM
"At 1629 EDT on May 11, 2015, Beaver Valley Power Station (BVPS) Unit 1 (Mode 6 Refueling) opened circuit breaker PCB-92 to de-energize system service transformer 1A due to an emergent issue with a transformer bushing. This resulted in a loss of power to the ERF [Emergency Response Facility] substation which powers various plant support equipment at both units. The BVPS Unit 2 Digital Radiation Monitoring System (DRMS) was non-functional for approximately 21 minutes. This was a loss of radiation monitor capability to alarm and indicate in the control room. Following power restoration to the ERF substation, the radiation monitor system was restored at 1650 EDT. Both Unit 1 and Unit 2 remain stable.
"Since the BVPS Unit 2 DRMS was non-functional, this event resulted in a loss of emergency assessment capability and is reportable per 10 CFR 50.72(b)(3)(xiii).
"The NRC Resident Inspector has been notified."
"At 1629 EDT on May 11, 2015, Beaver Valley Power Station (BVPS) Unit 1 (Mode 6 Refueling) opened circuit breaker PCB-92 to de-energize system service transformer 1A due to an emergent issue with a transformer bushing. This resulted in a loss of power to the ERF [Emergency Response Facility] substation which powers various plant support equipment at both units. The BVPS Unit 2 Digital Radiation Monitoring System (DRMS) was non-functional for approximately 21 minutes. This was a loss of radiation monitor capability to alarm and indicate in the control room. Following power restoration to the ERF substation, the radiation monitor system was restored at 1650 EDT. Both Unit 1 and Unit 2 remain stable.
"Since the BVPS Unit 2 DRMS was non-functional, this event resulted in a loss of emergency assessment capability and is reportable per 10 CFR 50.72(b)(3)(xiii).
"The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 51208
Facility: CLINTON
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: JIM PETERSON
HQ OPS Officer: JEFF HERRERA
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: JIM PETERSON
HQ OPS Officer: JEFF HERRERA
Notification Date: 07/08/2015
Notification Time: 13:23 [ET]
Event Date: 05/11/2015
Event Time: 01:19 [CDT]
Last Update Date: 07/08/2015
Notification Time: 13:23 [ET]
Event Date: 05/11/2015
Event Time: 01:19 [CDT]
Last Update Date: 07/08/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
ANN MARIE STONE (R3DO)
ANN MARIE STONE (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
INVALID ACTUATION OF THE DIVISION 2 EMERGENCY DIESEL GENERATOR
"The following information is provided as 60-day telephone notification to the NRC in accordance with 10 CFR 50.73(a)(1) reported under 10 CFR 50.73(a)(2)(iv)(A) for an invalid actuation of the Division 2 emergency diesel generator (DG). The event occurred on May 11, 2015, at 0119 CDT. As allowed by 10 CFR 50.73(a)(1), the notification is being made via telephone.
"(a) The specific train(s) and system(s) that actuated were:
"During the restoration from surveillance test procedure CPS 9080.25, 'DG 1B Test Mode Override, Load Reject Operability and Idle Speed Override,' the Division 2 DG automatically started. The Division 2 DG started when the maintenance technicians improperly removed a temporary toggle switch installed for simulation of a Loss of Coolant Accident (LOCA) signal.
"(b) Whether each train actuation was complete or partial:
"Upon receiving the simulated LOCA signal, the Division 2 DG started as expected. No additional actuations occurred.
"(c) Whether or not the system started and functioned successfully:
"Upon receiving the simulated LOCA signal, the Division 2 DG started and was verified to have properly started in response to a start signal.
"The NRC resident has been notified."
"The following information is provided as 60-day telephone notification to the NRC in accordance with 10 CFR 50.73(a)(1) reported under 10 CFR 50.73(a)(2)(iv)(A) for an invalid actuation of the Division 2 emergency diesel generator (DG). The event occurred on May 11, 2015, at 0119 CDT. As allowed by 10 CFR 50.73(a)(1), the notification is being made via telephone.
"(a) The specific train(s) and system(s) that actuated were:
"During the restoration from surveillance test procedure CPS 9080.25, 'DG 1B Test Mode Override, Load Reject Operability and Idle Speed Override,' the Division 2 DG automatically started. The Division 2 DG started when the maintenance technicians improperly removed a temporary toggle switch installed for simulation of a Loss of Coolant Accident (LOCA) signal.
"(b) Whether each train actuation was complete or partial:
"Upon receiving the simulated LOCA signal, the Division 2 DG started as expected. No additional actuations occurred.
"(c) Whether or not the system started and functioned successfully:
"Upon receiving the simulated LOCA signal, the Division 2 DG started and was verified to have properly started in response to a start signal.
"The NRC resident has been notified."