LOSS OF GREATER THAN 25% OF EMERGENCY NOTIFICATION SYSTEM SIRENS DUE TO WEATHER CONDITIONS
“At approximately 1818 EDT on October 29, 2011, Three Mile Island Nuclear Generating Station received notification that 25 of 96 emergency notification system offsite sirens were not functional. The loss of >25% of the sirens is considered a Major Loss of Emergency Preparedness Capabilities (10CFR50.72(b)(3)(xiii)). The loss of offsite sirens was due to loss of electrical power caused by significant heavy snowfall in the area. Efforts are in place to restore offsite sirens to service.”
The licensee stated that compensatory measures are in place should their be a need to notify the areas affected by the lost sirens.
| Power Reactor | Event Number: 47390 |
| Facility: THREE MILE ISLAND Region: 1 State: PA Unit: [1] [ ] [ ] RX Type: [1] B&W-L-LP,[2] B&W-L-LP NRC Notified By: CLINT SIX HQ OPS Officer: BILL HUFFMAN |
Notification Date: 10/29/2011 Notification Time: 19:46 [ET] Event Date: 10/29/2011 Event Time: 19:18 [EDT] Last Update Date: 10/29/2011 |
| Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(xiii) – LOSS COMM/ASMT/RESPONSE |
Person (Organization): ANNE DeFRANCISCO (R1DO) |
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
Event Text
| LOSS OF GREATER THAN 25% OF EMERGENCY NOTIFICATION SYSTEM SIRENS DUE TO WEATHER CONDITIONS
“At approximately 1818 EDT on October 29, 2011, Three Mile Island Nuclear Generating Station received notification that 25 of 96 emergency notification system offsite sirens were not functional. The loss of >25% of the sirens is considered a Major Loss of Emergency Preparedness Capabilities (10CFR50.72(b)(3)(xiii)). The loss of offsite sirens was due to loss of electrical power caused by significant heavy snowfall in the area. Efforts are in place to restore offsite sirens to service.” The licensee stated that compensatory measures are in place should their be a need to notify the areas affected by the lost sirens. The licensee has notified State and local authorities. The NRC Resident Inspector will be notified. |
LOSS OF GREATER THAN 25% OF EPZ SIRENS DUE TO WEATHER
“Limerick Generating Station reports a loss of >25% of the EPZ sirens for greater than 1 hour. Forty eight of the 185 offsite sirens are not functioning due to loss of power related to the recent storm.”
The licensee has notified the NRC Resident Inspector, and state and local government. A press release may be issued.
| Power Reactor | Event Number: 47389 |
| Facility: LIMERICK Region: 1 State: PA Unit: [1] [2] [ ] RX Type: [1] GE-4,[2] GE-4 NRC Notified By: MARK ARNOSKY HQ OPS Officer: JOHN KNOKE |
Notification Date: 10/29/2011 Notification Time: 15:39 [ET] Event Date: 10/29/2011 Event Time: 15:15 [EDT] Last Update Date: 10/29/2011 |
| Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(xiii) – LOSS COMM/ASMT/RESPONSE |
Person (Organization): ANNE DeFRANCISCO (R1DO) |
| 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 |
Event Text
| LOSS OF GREATER THAN 25% OF EPZ SIRENS DUE TO WEATHER
“Limerick Generating Station reports a loss of >25% of the EPZ sirens for greater than 1 hour. Forty eight of the 185 offsite sirens are not functioning due to loss of power related to the recent storm.” The licensee has notified the NRC Resident Inspector, and state and local government. A press release may be issued. |
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