Event Notification Report for March 14, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/13/2015 - 03/14/2015
Power Reactor
Event Number: 50893
Facility: VOGTLE
Region: 2 State: GA
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: MATT FRECK
HQ OPS Officer: STEVE SANDIN
Region: 2 State: GA
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: MATT FRECK
HQ OPS Officer: STEVE SANDIN
Notification Date: 03/14/2015
Notification Time: 08:07 [ET]
Event Date: 03/14/2015
Event Time: 04:29 [EDT]
Last Update Date: 03/14/2015
Notification Time: 08:07 [ET]
Event Date: 03/14/2015
Event Time: 04:29 [EDT]
Last Update Date: 03/14/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(2)(iv)(A) - ECCS INJECTION 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)(2)(iv)(A) - ECCS INJECTION 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
SCOTT SHAEFFER (R2DO)
MARY JANE ROSS-LEE (NRR)
WILLIAM GOTT (IRD)
SCOTT SHAEFFER (R2DO)
MARY JANE ROSS-LEE (NRR)
WILLIAM GOTT (IRD)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | A/R | Y | 100 | Power Operation | 0 | Hot Standby |
AUTOMATIC REACTOR TRIP ON SYSTEM INJECTION ACTUATION SIGNAL
"Vogtle Unit 2 was operating in Mode 1 at 100% rated thermal power. At 0429 EDT a Unit 2 automatic Reactor Trip and Safety Injection / Steamline Isolation occurred. All systems operated as expected and all control rods fully inserted. The Safety Injection was terminated at 0447 EDT and the emergency operating procedures were exited at 0522 EDT. Unit 2 is stable in Mode 3 with decay heat removal via the Auxiliary Feedwater system and the atmospheric relief valves. A response team is investigating the cause of the event. Unit 1 was unaffected by the event.
"NRC Senior Resident Inspector was notified and is at plant site for investigation."
"Vogtle Unit 2 was operating in Mode 1 at 100% rated thermal power. At 0429 EDT a Unit 2 automatic Reactor Trip and Safety Injection / Steamline Isolation occurred. All systems operated as expected and all control rods fully inserted. The Safety Injection was terminated at 0447 EDT and the emergency operating procedures were exited at 0522 EDT. Unit 2 is stable in Mode 3 with decay heat removal via the Auxiliary Feedwater system and the atmospheric relief valves. A response team is investigating the cause of the event. Unit 1 was unaffected by the event.
"NRC Senior Resident Inspector was notified and is at plant site for investigation."
Power Reactor
Event Number: 50894
Facility: VOGTLE
Region: 2 State: GA
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: KEVIN LOWE
HQ OPS Officer: JEFF ROTTON
Region: 2 State: GA
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: KEVIN LOWE
HQ OPS Officer: JEFF ROTTON
Notification Date: 03/14/2015
Notification Time: 19:19 [ET]
Event Date: 03/14/2015
Event Time: 12:07 [EDT]
Last Update Date: 03/14/2015
Notification Time: 19:19 [ET]
Event Date: 03/14/2015
Event Time: 12:07 [EDT]
Last Update Date: 03/14/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
SCOTT SHAEFFER (R2DO)
SCOTT SHAEFFER (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Hot Standby | 0 | Hot Standby |
UNPLANNED ACTUATION DURING SURVEILLANCE TEST
"On March 14, 2015 at 1207 EDT, operators were performing steps to disable an automatic actuation signal to the B-train Auxiliary Feedwater system (AFW), when a valid actuation signal was received on B-train only. Both motor driven Auxiliary Feedwater pumps were already running and feeding forward. The B-train discharge valves went from throttled to fully open. The AFW discharge valves were restored to their previous positions without any adverse impacts on the plant. Decay heat removal was still being removed through the Atmospheric Relief Valves."
The licensee notified the NRC Resident Inspector.
"On March 14, 2015 at 1207 EDT, operators were performing steps to disable an automatic actuation signal to the B-train Auxiliary Feedwater system (AFW), when a valid actuation signal was received on B-train only. Both motor driven Auxiliary Feedwater pumps were already running and feeding forward. The B-train discharge valves went from throttled to fully open. The AFW discharge valves were restored to their previous positions without any adverse impacts on the plant. Decay heat removal was still being removed through the Atmospheric Relief Valves."
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 50895
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: 03/14/2015
Notification Time: 23:32 [ET]
Event Date: 03/14/2015
Event Time: 17:08 [EDT]
Last Update Date: 03/14/2015
Notification Time: 23:32 [ET]
Event Date: 03/14/2015
Event Time: 17:08 [EDT]
Last Update Date: 03/14/2015
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):
WILLIAM COOK (R1DO)
WILLIAM COOK (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 |
DIGITAL RADIATION MONITORING SYSTEM FAILED
"At 1708 EDT on March 14, 2015, Beaver Valley Power Station (BVPS) Unit 2 determined that the Digital Radiation Monitoring System (DRMS) was not operating. This resulted in a loss of radiation monitor capability to alarm and indicate in the control room. BVPS Unit 2 DRMS was declared non-functional. Repair efforts were initiated and compensatory measures were initiated.
"The radiation monitoring computer system is a stand-alone system. No cyber interference is suspected.
"At 2056 EDT on March 14, 2015, following initial investigation and repairs, BVPS Unit 2 emergency assessment capability was restored in conjunction with DRMS restoration.
"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 1708 EDT on March 14, 2015, Beaver Valley Power Station (BVPS) Unit 2 determined that the Digital Radiation Monitoring System (DRMS) was not operating. This resulted in a loss of radiation monitor capability to alarm and indicate in the control room. BVPS Unit 2 DRMS was declared non-functional. Repair efforts were initiated and compensatory measures were initiated.
"The radiation monitoring computer system is a stand-alone system. No cyber interference is suspected.
"At 2056 EDT on March 14, 2015, following initial investigation and repairs, BVPS Unit 2 emergency assessment capability was restored in conjunction with DRMS restoration.
"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."