Event Notification Report for April 30, 2016
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/29/2016 - 04/30/2016
EVENT NUMBERS
51895
Power Reactor
Event Number: 51895
Facility: OYSTER CREEK
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: ANDREW KRUKOWSKI
HQ OPS Officer: DANIEL MILLS
Region: 1 State: NJ
Unit: [1] [] []
RX Type: [1] GE-2
NRC Notified By: ANDREW KRUKOWSKI
HQ OPS Officer: DANIEL MILLS
Notification Date: 04/30/2016
Notification Time: 19:14 [ET]
Event Date: 04/30/2016
Event Time: 18:04 [EDT]
Last Update Date: 04/30/2016
Notification Time: 19:14 [ET]
Event Date: 04/30/2016
Event Time: 18:04 [EDT]
Last Update Date: 04/30/2016
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):
JAMES DWYER (R1DO)
JAMES DWYER (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 0 | Startup | 0 | Hot Shutdown |
MANUAL SCRAM DURING REACTOR STARTUP DUE TO INCREASE IN UNIDENTIFIED LEAK RATE
"Today at 1804 EDT, a manual scram was processed during startup due to rising unidentified leak rate. The rise in unidentified leak rate was identified to be coming from the D Reactor Recirc Pump seal cavity. All rods inserted into the core and all systems functioned as expected during the scram.
"The event is reportable within 4 hours per 10 CFR 50.72(b)(2)(iv)(B) - any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation."
The reactor is stable in hot shutdown.
The licensee notified the NRC Resident Inspector.
"Today at 1804 EDT, a manual scram was processed during startup due to rising unidentified leak rate. The rise in unidentified leak rate was identified to be coming from the D Reactor Recirc Pump seal cavity. All rods inserted into the core and all systems functioned as expected during the scram.
"The event is reportable within 4 hours per 10 CFR 50.72(b)(2)(iv)(B) - any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation."
The reactor is stable in hot shutdown.
The licensee notified the NRC Resident Inspector.