Two Pennsylvania Nuclear Power Plants Experience Major Loss of Emergency Preparedness Capabilities

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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.

Source: www.nrc.gov, via Enformable
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