Event Notification Report for November 15, 2009
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/14/2009 - 11/15/2009
Power Reactor
Event Number: 45499
Facility: HARRIS
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: LEWIS ROGERS
HQ OPS Officer: DONG HWA PARK
Region: 2 State: NC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: LEWIS ROGERS
HQ OPS Officer: DONG HWA PARK
Notification Date: 11/16/2009
Notification Time: 02:24 [ET]
Event Date: 11/15/2009
Event Time: 22:42 [EST]
Last Update Date: 11/16/2009
Notification Time: 02:24 [ET]
Event Date: 11/15/2009
Event Time: 22:42 [EST]
Last Update Date: 11/16/2009
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):
MARK LESSER (R2DO)
MARK LESSER (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 100 | Power Operation | 0 | Hot Standby |
MANUAL REACTOR TRIP DUE TO MAIN GENERATOR OIL LEAK
"At 2242 [EST] on 11/15/09, the reactor was manually scrammed from 100% power due to a large oil leak on the main generator seal oil system. Condenser vacuum was broken immediately following the reactor trip, and the main turbine stopped rotating at 2324 [EST]. Following the reactor trip, the 'B' steam generator Main Steam Isolation Valve (MSIV) failed to fully close on demand, but was closed due to field actions at 2303 [EST]. The reactor remained stable at NOP/NOT following the reactor trip. Offsite power remained available throughout the event.
"This condition is being reported as actuation of the reactor protection system in accordance with 10CFR 50.72(b)(2)(iv)(B)."
All control rods fully inserted and decay heat is being removed through the S/G relief valves to the atmospheric dumps. No known primary to secondary leakage exists. The plant remains stable in Mode 3.
The licensee notified the NRC Resident Inspector.
"At 2242 [EST] on 11/15/09, the reactor was manually scrammed from 100% power due to a large oil leak on the main generator seal oil system. Condenser vacuum was broken immediately following the reactor trip, and the main turbine stopped rotating at 2324 [EST]. Following the reactor trip, the 'B' steam generator Main Steam Isolation Valve (MSIV) failed to fully close on demand, but was closed due to field actions at 2303 [EST]. The reactor remained stable at NOP/NOT following the reactor trip. Offsite power remained available throughout the event.
"This condition is being reported as actuation of the reactor protection system in accordance with 10CFR 50.72(b)(2)(iv)(B)."
All control rods fully inserted and decay heat is being removed through the S/G relief valves to the atmospheric dumps. No known primary to secondary leakage exists. The plant remains stable in Mode 3.
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 45498
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: BRIEN STRIZZI
HQ OPS Officer: DONG HWA PARK
Region: 1 State: CT
Unit: [] [2] []
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: BRIEN STRIZZI
HQ OPS Officer: DONG HWA PARK
Notification Date: 11/15/2009
Notification Time: 08:57 [ET]
Event Date: 11/15/2009
Event Time: 08:26 [EST]
Last Update Date: 11/15/2009
Notification Time: 08:57 [ET]
Event Date: 11/15/2009
Event Time: 08:26 [EST]
Last Update Date: 11/15/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
CHRISTOPHER CAHILL (R1DO)
DARRELL ROBERTS (R1)
JEFFERY GRANT (IRD)
SHER BAHADUR (NRR)
BRUCE BOGER (NRR)
CHRISTOPHER CAHILL (R1DO)
DARRELL ROBERTS (R1)
JEFFERY GRANT (IRD)
SHER BAHADUR (NRR)
BRUCE BOGER (NRR)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Hot Standby | 0 | Hot Standby |
UNIT 2 DECLARED AN UNUSUAL EVENT DUE TO A LOSS OF ANNUNCIATORS
At 0826 EST, Millstone Unit 2 declared a NOUE, due to a loss of power to the control room main board annunciators. Power was lost to the non-vital power supply, VR-11&21, during heater drain pump post maintenance testing, which caused the loss of power to the main control board annunciators. Charging and letdown systems are secured. Additional watchstanders were stationed during the annunciator outage. Power was restored to the main control board, and the licensee is in the process of terminating the NOUE. The NRC remained in Normal Mode.
The NRC Senior Resident Inspector has been notified. The State of Connecticut has been notified.
* * * NOTIFIED BY BRIEN STRIZZI TO DONG PARK AT 0922 EST ON 11/15/09 * * *
Millstone Unit 2 terminated the NOUE at 0859 EST after power was restored to the main control board annunciator.
Notified R1DO (Cahill), R1RA (Roberts), IRD MOC (Grant), NRR ET (Boger), NRR EO (Bahadur).
The NRC Senior Resident Inspector has been notified. The State of Connecticut has been notified as well as DHS and FEMA.
At 0826 EST, Millstone Unit 2 declared a NOUE, due to a loss of power to the control room main board annunciators. Power was lost to the non-vital power supply, VR-11&21, during heater drain pump post maintenance testing, which caused the loss of power to the main control board annunciators. Charging and letdown systems are secured. Additional watchstanders were stationed during the annunciator outage. Power was restored to the main control board, and the licensee is in the process of terminating the NOUE. The NRC remained in Normal Mode.
The NRC Senior Resident Inspector has been notified. The State of Connecticut has been notified.
* * * NOTIFIED BY BRIEN STRIZZI TO DONG PARK AT 0922 EST ON 11/15/09 * * *
Millstone Unit 2 terminated the NOUE at 0859 EST after power was restored to the main control board annunciator.
Notified R1DO (Cahill), R1RA (Roberts), IRD MOC (Grant), NRR ET (Boger), NRR EO (Bahadur).
The NRC Senior Resident Inspector has been notified. The State of Connecticut has been notified as well as DHS and FEMA.