Event Notification Report for December 17, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/16/2010 - 12/17/2010
Fuel Cycle Facility
Event Number: 46487
Facility: PADUCAH GASEOUS DIFFUSION PLANT
Region: 2 State: KY
Unit: [] [] []
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817 (301)564-3200
NRC Notified By: CALVIN PITTMAN
HQ OPS Officer: MARK ABRAMOVITZ
Region: 2 State: KY
Unit: [] [] []
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817 (301)564-3200
NRC Notified By: CALVIN PITTMAN
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 12/17/2010
Notification Time: 14:12 [ET]
Event Date: 12/17/2010
Event Time: 09:37 [CST]
Last Update Date: 12/17/2010
Notification Time: 14:12 [ET]
Event Date: 12/17/2010
Event Time: 09:37 [CST]
Last Update Date: 12/17/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
JAY HENSON (R2DO)
JACK DAVIS (NMSS)
JAY HENSON (R2DO)
JACK DAVIS (NMSS)
DIESEL FUEL OIL SPILL CONTAINED ON SITE - FEDERAL AND STATE OFFICIALS NOTIFIED
"At 0937 CST, 12/17/2010, the Kentucky Emergency Response Team (Report Number 2321984), the Kentucky Department for Environmental Protection, and the National Response Center (Report Number 962502) were notified of the following issue: a diesel fuel oil leak occurred from a pressure indicating line from storage tank located at [Bldg] C-600. The amount of diesel fuel that leaked from the storage tank is greater than the reportable quantity of 75 gallons. The secondary containment drain valve leaked which allowed the diesel fuel to reach the oil containment underflow dam at outfall 008. The diesel fuel is currently contained in the oil containment underflow dam. The effluent from outfall 008 has been tested and does not contain any detectable diesel fuel. Additionally, no visible sheen was observed from the effluent from outfall 008. Cleanup of the diesel fuel is in progress.
"This event is reportable as 'USEC shall notify NRC of any event or situation, related to the health and safety of the public or on-site personnel, or protection of the environment, for which a news release is planned or notification to other government agencies has been or will be made. Such an event may include an on-site fatality or inadvertent release of radioactively contaminated materials.'
"The NRC Resident Inspector has been notified of this event.
"PGDP Event Report No. PAD-2010-13."
"At 0937 CST, 12/17/2010, the Kentucky Emergency Response Team (Report Number 2321984), the Kentucky Department for Environmental Protection, and the National Response Center (Report Number 962502) were notified of the following issue: a diesel fuel oil leak occurred from a pressure indicating line from storage tank located at [Bldg] C-600. The amount of diesel fuel that leaked from the storage tank is greater than the reportable quantity of 75 gallons. The secondary containment drain valve leaked which allowed the diesel fuel to reach the oil containment underflow dam at outfall 008. The diesel fuel is currently contained in the oil containment underflow dam. The effluent from outfall 008 has been tested and does not contain any detectable diesel fuel. Additionally, no visible sheen was observed from the effluent from outfall 008. Cleanup of the diesel fuel is in progress.
"This event is reportable as 'USEC shall notify NRC of any event or situation, related to the health and safety of the public or on-site personnel, or protection of the environment, for which a news release is planned or notification to other government agencies has been or will be made. Such an event may include an on-site fatality or inadvertent release of radioactively contaminated materials.'
"The NRC Resident Inspector has been notified of this event.
"PGDP Event Report No. PAD-2010-13."
Power Reactor
Event Number: 46488
Facility: WOLF CREEK
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: BILL STUCKER
HQ OPS Officer: MARK ABRAMOVITZ
Region: 4 State: KS
Unit: [1] [] []
RX Type: [1] W-4-LP
NRC Notified By: BILL STUCKER
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 12/17/2010
Notification Time: 17:38 [ET]
Event Date: 12/17/2010
Event Time: 15:35 [CST]
Last Update Date: 12/17/2010
Notification Time: 17:38 [ET]
Event Date: 12/17/2010
Event Time: 15:35 [CST]
Last Update Date: 12/17/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Person (Organization):
LINDA HOWELL (R4DO)
LINDA HOWELL (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
UNANALYZED CONDITION - POTENTIAL EQUIPMENT ACTUATIONS DUE TO ELECTRICAL SHORT CIRCUITS
"A post-fire safe shutdown (PFSSD) circuit analysis identified the potential for a fire in the Control Room to cause multiple proper polarity hot shorts causing the Pressurizer Power Operated Relief Valves (PORV) to open. This postulated failure would require at least three separate 'smart' hot shorts including 1) a positive external hot short, 2) a negative external hot short, and 3) a short across the control room hand switch to cause each PORV to open. This could result in a loss of coolant accident inside the containment building.
"This circuit analysis also identified that a fire in the control room could cause the recirculation dampers associated with the 'B' Essential Service Water Pump Room and 'B' Emergency Diesel Generator Room to fail open, closed, or anywhere in between. This could cause the room temperatures to drop below the minimum or rise above maximum design temperatures depending on ambient conditions.
"Compensatory measures are established for early detection and extinguishment of a fire associated with these circuits in the Control Room. Procedure changes are also being developed for Control Room Evacuation."
The licensee notified the NRC Resident Inspector.
"A post-fire safe shutdown (PFSSD) circuit analysis identified the potential for a fire in the Control Room to cause multiple proper polarity hot shorts causing the Pressurizer Power Operated Relief Valves (PORV) to open. This postulated failure would require at least three separate 'smart' hot shorts including 1) a positive external hot short, 2) a negative external hot short, and 3) a short across the control room hand switch to cause each PORV to open. This could result in a loss of coolant accident inside the containment building.
"This circuit analysis also identified that a fire in the control room could cause the recirculation dampers associated with the 'B' Essential Service Water Pump Room and 'B' Emergency Diesel Generator Room to fail open, closed, or anywhere in between. This could cause the room temperatures to drop below the minimum or rise above maximum design temperatures depending on ambient conditions.
"Compensatory measures are established for early detection and extinguishment of a fire associated with these circuits in the Control Room. Procedure changes are also being developed for Control Room Evacuation."
The licensee notified the NRC Resident Inspector.