ENS 49246
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ENS Event | |
|---|---|
06:00 Aug 7, 2013 | |
| Title | Loss of Power to Emergency Sirens and Power to Emergency Operations Facility Due to Severe Weather |
| Event Description | At approximately 0100 (CDT) on 7 August, 2013, severe thunderstorms and high winds in the area resulted in a loss of power to the Point Beach Nuclear Plant (PBNP) Emergency Operations Facility (EOF) and to Alert and Notification System (ANS) sirens. Loss of ANS sirens resulted in a loss of greater than 50% of the Emergency Planning Zone (EPZ) population coverage [14 out of 22 lost]. Note: PBNP has installed a new siren system that is currently in operational acceptance testing and remained fully functional on backup battery power.
During the loss of power to the EOF, station personnel verified that power remained available to the Alternate Emergency Operations Facility (AEOF). At approximately 0545 CDT, station personnel verified that power to the EOF was restored. Efforts are ongoing to restore power to sirens. The licensee has notified State and local authorities and the NRC Resident Inspector. See related EN #49247.
At 1525 CDT on 8/7/13, the licensee returned 9 of 14 emergency sirens to service which brings the percentage of population covered by the sirens below the reporting threshold. The licensee has notified the NRC Resident Inspector. Notified R3DO (Lara). |
| Where | |
|---|---|
Point Beach  Wisconsin (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+3.02 h0.126 days <br />0.018 weeks <br />0.00414 months <br />) | |
| Opened: | Mary Sipiorski 09:01 Aug 7, 2013 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Aug 7, 2013 |
| 49246 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (85 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (67 %) |
WEEKMONTHYEARENS 492462013-08-07T06:00:0007 August 2013 06:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Emergency Sirens and Power to Emergency Operations Facility Due to Severe Weather ENS 483052012-09-13T19:28:00013 September 2012 19:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Non-Functional Due to Tsc Ventilation Equipment Issue ENS 416832005-05-10T08:23:00010 May 2005 08:23:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Notification System (Ens) Communication Lines ENS 415382005-03-28T19:43:00028 March 2005 19:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Capability Due to Power Outage 2013-08-07T06:00:00 | |
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