Event Notification Report for December 30, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/29/2012 - 12/30/2012
EVENT NUMBERS
48639
Power Reactor
Event Number: 48639
Facility: COLUMBIA GENERATING STATION
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: RICK KERRONE
HQ OPS Officer: BILL HUFFMAN
Region: 4 State: WA
Unit: [2] [] []
RX Type: [2] GE-5
NRC Notified By: RICK KERRONE
HQ OPS Officer: BILL HUFFMAN
Notification Date: 12/30/2012
Notification Time: 15:45 [ET]
Event Date: 12/30/2012
Event Time: 05:30 [PST]
Last Update Date: 12/30/2012
Notification Time: 15:45 [ET]
Event Date: 12/30/2012
Event Time: 05:30 [PST]
Last Update Date: 12/30/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL 50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
HEATHER GEPFORD (R4DO)
HEATHER GEPFORD (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
SECONDARY CONTAINMENT MOMENTARILY INOPERABLE
"Technical Specification 3.6.4.1 (Secondary Containment) requires that the secondary containment be operable. Surveillance requirement 3.6.4.1.3 requires verifying each secondary containment access inner door or each secondary containment access outer door in each access opening is closed.
"During a fire tour, a security officer proceeded through Reactor Building outer security door (R-204) and opened the inner door (R-205) prior to the outer security door completely closing. This resulted in both the Reactor Building inner and outer access doors being simultaneously open for a short duration. Normally, the doors are interlocked in which the inner door would not be able to be opened prior to the outer security door being closed.
"The security officer immediately notified the Main Control Room and operations personnel verified both doors were locked and closed. The outer security door (R205) has been key-locked closed until corrective actions are determined.
"Columbia Generating Station is investigating why the interlock feature failed.
"There were no radiological releases associated with the event.
"No safety system actuations or isolations occurred."
The Licensee has notified the NRC Resident Inspector.
"Technical Specification 3.6.4.1 (Secondary Containment) requires that the secondary containment be operable. Surveillance requirement 3.6.4.1.3 requires verifying each secondary containment access inner door or each secondary containment access outer door in each access opening is closed.
"During a fire tour, a security officer proceeded through Reactor Building outer security door (R-204) and opened the inner door (R-205) prior to the outer security door completely closing. This resulted in both the Reactor Building inner and outer access doors being simultaneously open for a short duration. Normally, the doors are interlocked in which the inner door would not be able to be opened prior to the outer security door being closed.
"The security officer immediately notified the Main Control Room and operations personnel verified both doors were locked and closed. The outer security door (R205) has been key-locked closed until corrective actions are determined.
"Columbia Generating Station is investigating why the interlock feature failed.
"There were no radiological releases associated with the event.
"No safety system actuations or isolations occurred."
The Licensee has notified the NRC Resident Inspector.