Event Notification Report for November 05, 2016
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/04/2016 - 11/05/2016
EVENT NUMBERS
52347
Power Reactor
Event Number: 52347
Facility: HOPE CREEK
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: MARIAZ DAVIS
HQ OPS Officer: BETHANY CECERE
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: MARIAZ DAVIS
HQ OPS Officer: BETHANY CECERE
Notification Date: 11/05/2016
Notification Time: 10:16 [ET]
Event Date: 11/05/2016
Event Time: 04:04 [EDT]
Last Update Date: 11/05/2016
Notification Time: 10:16 [ET]
Event Date: 11/05/2016
Event Time: 04:04 [EDT]
Last Update Date: 11/05/2016
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):
DAN SCHROEDER (R1DO)
DAN SCHROEDER (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
VALID ACTUATION OF RPS WHILE REACTOR SHUTDOWN
"On November 5, 2016 an RPS [Reactor Protection System] actuation occurred from an actual high scram discharge volume level reaching the RPS actuation setpoint. This actuation was the result of a Redundant Reactivity Control System (RRCS) signal inadvertently generated during excess flow check valve testing with the reactor in cold shutdown. At the time of the actuation, all control rods were inserted. RCS pressure was approximately 830 psig to support excess flow check valve testing and shutdown cooling was removed from service. When RRCS initiated, the B Reactor Recirculation Pump tripped as expected and the scram air header depressurized as expected, which caused the high level in the scram discharge volume. The cause of the RRCS signal is being investigated. The A loop of RHR was placed back into the Shutdown Cooling mode of operation with reactor temperature being maintained at approximately 150 degrees F. There were no injuries as a result of this event."
The licensee has notified Lower Alloways Creek Township and the NRC Resident Inspector.
"On November 5, 2016 an RPS [Reactor Protection System] actuation occurred from an actual high scram discharge volume level reaching the RPS actuation setpoint. This actuation was the result of a Redundant Reactivity Control System (RRCS) signal inadvertently generated during excess flow check valve testing with the reactor in cold shutdown. At the time of the actuation, all control rods were inserted. RCS pressure was approximately 830 psig to support excess flow check valve testing and shutdown cooling was removed from service. When RRCS initiated, the B Reactor Recirculation Pump tripped as expected and the scram air header depressurized as expected, which caused the high level in the scram discharge volume. The cause of the RRCS signal is being investigated. The A loop of RHR was placed back into the Shutdown Cooling mode of operation with reactor temperature being maintained at approximately 150 degrees F. There were no injuries as a result of this event."
The licensee has notified Lower Alloways Creek Township and the NRC Resident Inspector.