ENS 40922
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ENS Event | |
|---|---|
12:15 Aug 4, 2004 | |
| Title | Loss of Emergency Notification Due to Inoperable Sirens |
| Event Description | At 0715 on August 4, 2004, Exelon was notified by Fulton Contracting that Braidwood Station had >[greater than] 25% of its emergency notification sirens inoperable. The cause of the inoperability [at 0626] for the sirens was due to a loss of power due to severe weather. As of 0708 on August 4, 2004, the number of inoperable sirens was less than 25%. Due to a major loss of emergency preparedness capabilities, this event is reportable per 10 CFR 50.72(b)(3)(xiii).
The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Braidwood  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+3.05 h0.127 days <br />0.0182 weeks <br />0.00418 months <br />) | |
| Opened: | Larry Brooks 15:18 Aug 4, 2004 |
| NRC Officer: | Arlon Costa |
| Last Updated: | Aug 4, 2004 |
| 40922 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 563522023-02-06T11:30:0006 February 2023 11:30:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications and Assessment Capabilities ENS 553252021-06-24T14:01:00024 June 2021 14:01:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Capability ENS 540902019-05-26T00:30:00026 May 2019 00:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Main Control Room Area Radiation Monitors ENS 531802018-01-23T10:00:00023 January 2018 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Technical Support Center Planned Maintenance ENS 521032016-07-18T20:00:00018 July 2016 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communications Capability ENS 511542015-06-15T12:00:00015 June 2015 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Ventilation to Be Removed from Service for Planned Maintenance ENS 510922015-05-27T14:45:00027 May 2015 14:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 509572015-04-06T13:09:0006 April 2015 13:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 509332015-03-27T14:41:00027 March 2015 14:41:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitor Not Available for Emergency Plan Assessment ENS 504312014-09-06T11:13:0006 September 2014 11:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Air Conditioning Condensing Units Out of Service ENS 503972014-08-25T10:00:00025 August 2014 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Planned Maintenance ENS 502472014-07-01T12:15:0001 July 2014 12:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Alert and Notification System Failure ENS 501622014-06-01T18:14:0001 June 2014 18:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Cooling Capability ENS 497232013-10-16T19:20:00016 October 2013 19:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service ENS 483282012-09-21T01:35:00021 September 2012 01:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Inoperable ENS 478452012-04-18T02:30:00018 April 2012 02:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer Removed from Service for Planned Replacement ENS 476222012-01-26T03:00:00026 January 2012 03:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Planned Maintenance ENS 467662011-04-19T04:09:00019 April 2011 04:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer Removed from Service for Planned Replacement ENS 435902007-08-23T20:30:00023 August 2007 20:30:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Manual Reactor Trip Because of Lowering Condenser Vacuum ENS 431372007-02-01T15:25:0001 February 2007 15:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Phone Connections ENS 418582005-07-21T00:17:00021 July 2005 00:17:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Failed for One Hour ENS 409222004-08-04T12:15:0004 August 2004 12:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Notification Due to Inoperable Sirens 2023-02-06T11:30:00 | |
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