Event Notification Report for October 21, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
10/20/2012 - 10/21/2012
Power Reactor
Event Number: 48427
Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: REMZI MERTOGUL
HQ OPS Officer: DONALD NORWOOD
Region: 4 State: CA
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: REMZI MERTOGUL
HQ OPS Officer: DONALD NORWOOD
Notification Date: 10/21/2012
Notification Time: 03:25 [ET]
Event Date: 10/21/2012
Event Time: 00:09 [PDT]
Last Update Date: 10/21/2012
Notification Time: 03:25 [ET]
Event Date: 10/21/2012
Event Time: 00:09 [PDT]
Last Update Date: 10/21/2012
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
GREG PICK (R4DO)
ELMO COLLINS (R4)
BRUCE BOGER (NRR)
JEFFERY GRANT (IRD)
GREG PICK (R4DO)
ELMO COLLINS (R4)
BRUCE BOGER (NRR)
JEFFERY GRANT (IRD)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
UNUSUAL EVENT DECLARED DUE TO SEISMIC EVENT
"HU1.1 Seismic event identified by earthquake felt in plant and US Geological Survey (USGS)."
An earthquake was felt onsite at approximately 0000 PDT. The licensee stated that two out of three methods for determining if an Unusual Event should be declared were met (i.e. the earthquake was felt in the plant and the earthquake was monitored by the USGS). The licensee characterized the earthquake as a "very mild" event. The licensee stated that, at the present time, there was no indication of damage to either unit and that both units remain at 100% power. The licensee is in the process of conducting walkdowns to confirm there was no damage to the plant.
The USGS classified the magnitude of the earthquake as 5.3.
The licensee notified state and local authorities and the NRC Resident Inspector. Notified other federal agencies (FEMA, DHS, DHS NICC and Nuclear SSA via email).
* * * UPDATE FROM HENRY CLARDY TO VINCE KLCO ON 10/21/12 AT 1448 EDT * * *
As of 1142 PDT on 10/21/12, the licensee terminated from the Unusual Event based on review of completed plant walkdowns. No damage was identified. Both Units are stable and in normal plant operations.
The licensee notified state and local authorities and will notify the NRC Resident Inspector. Notified the R4DO (Pick), NRR EO (Bahadur), IRD MOC (Grant) and federal agencies (FEMA, DHS, DHS NICC and Nuclear SSA via email).
"HU1.1 Seismic event identified by earthquake felt in plant and US Geological Survey (USGS)."
An earthquake was felt onsite at approximately 0000 PDT. The licensee stated that two out of three methods for determining if an Unusual Event should be declared were met (i.e. the earthquake was felt in the plant and the earthquake was monitored by the USGS). The licensee characterized the earthquake as a "very mild" event. The licensee stated that, at the present time, there was no indication of damage to either unit and that both units remain at 100% power. The licensee is in the process of conducting walkdowns to confirm there was no damage to the plant.
The USGS classified the magnitude of the earthquake as 5.3.
The licensee notified state and local authorities and the NRC Resident Inspector. Notified other federal agencies (FEMA, DHS, DHS NICC and Nuclear SSA via email).
* * * UPDATE FROM HENRY CLARDY TO VINCE KLCO ON 10/21/12 AT 1448 EDT * * *
As of 1142 PDT on 10/21/12, the licensee terminated from the Unusual Event based on review of completed plant walkdowns. No damage was identified. Both Units are stable and in normal plant operations.
The licensee notified state and local authorities and will notify the NRC Resident Inspector. Notified the R4DO (Pick), NRR EO (Bahadur), IRD MOC (Grant) and federal agencies (FEMA, DHS, DHS NICC and Nuclear SSA via email).
Power Reactor
Event Number: 48428
Facility: SAN ONOFRE
Region: 4 State: CA
Unit: [] [2] []
RX Type: [1] W-3-LP,[2] CE,[3] CE
NRC Notified By: CHARLES HAIDAR
HQ OPS Officer: VINCE KLCO
Region: 4 State: CA
Unit: [] [2] []
RX Type: [1] W-3-LP,[2] CE,[3] CE
NRC Notified By: CHARLES HAIDAR
HQ OPS Officer: VINCE KLCO
Notification Date: 10/21/2012
Notification Time: 13:03 [ET]
Event Date: 10/21/2012
Event Time: 08:05 [PDT]
Last Update Date: 10/21/2012
Notification Time: 13:03 [ET]
Event Date: 10/21/2012
Event Time: 08:05 [PDT]
Last Update Date: 10/21/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
GREG PICK (R4DO)
GREG PICK (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Hot Shutdown | 0 | Hot Shutdown |
OFFSITE NOTIFICATION DUE TO HYDROGEN LEAKAGE
"The control room was notified that an unknown quantity of H2 gas (classified as a minor coupling leak [identified with Snoop liquid leak detector]) is currently being released to the air from the Unit 2 Full Flow Hydrogen skid.
"The Environmental Protection Group reported the leak to the California Emergency Management Agency (Cal EMA) at 0809 PDT and the San Diego Department of Environmental Health at 0812 PDT lAW [plant] procedure S0123-XV-17.3, 'Spill Contingency Plan'. The Hydrogen Gas leak is currently still in progress. There is no gas collection areas. Maintenance is in the process of taking action to terminate the leak."
The licensee notified the NRC Resident Inspector.
"The control room was notified that an unknown quantity of H2 gas (classified as a minor coupling leak [identified with Snoop liquid leak detector]) is currently being released to the air from the Unit 2 Full Flow Hydrogen skid.
"The Environmental Protection Group reported the leak to the California Emergency Management Agency (Cal EMA) at 0809 PDT and the San Diego Department of Environmental Health at 0812 PDT lAW [plant] procedure S0123-XV-17.3, 'Spill Contingency Plan'. The Hydrogen Gas leak is currently still in progress. There is no gas collection areas. Maintenance is in the process of taking action to terminate the leak."
The licensee notified the NRC Resident Inspector.