ENS 56358
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ENS Event | |
|---|---|
11:30 Feb 6, 2023 | |
| Title | Loss of Communications and Assessment Capabilities |
| Event Description | The following information was provided by Constellation via email:
On 02/06/2023 at 0416 EST, the Constellation Emergency Response Organization (ERO) Notification Database System uploaded data files into the Mass Notification System (Everbridge) which is used to notify ERO personnel when activated. At 0630, the individual reviewing the uploaded files discovered that the data files did not upload properly and that Everbridge may not notify all ERO individuals within the required 10 minutes of system initiation. Constellation resolved the issue by 0752. During the time period of 0416 to 0752, control room operators would have been unaware that the ERO notification was not successful. Therefore, this issue constitutes a loss of offsite communications capability and is reportable under 10 CFR 50.72(b)(3)(xiii), 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system).' This loss of offsite communications capability affected all Constellation nuclear stations. There was no impact on the health and safety of the public or plant personnel. Each affected station NRC Resident Inspectors have been or will be notified. |
| Where | |
|---|---|
Peach Bottom  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+1.93 h0.0804 days <br />0.0115 weeks <br />0.00264 months <br />) | |
| Opened: | Dennis Moore 13:26 Feb 6, 2023 |
| NRC Officer: | Ernest West |
| Last Updated: | Feb 14, 2023 |
| 56358 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 565132023-05-09T18:55:0009 May 2023 18:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Preparedness Capabilities ENS 563582023-02-06T11:30:0006 February 2023 11:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications and Assessment Capabilities ENS 549172020-09-28T09:00:00028 September 2020 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | ENS 548292020-08-11T17:34:00011 August 2020 17:34:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Ventilation System ENS 535942018-09-11T04:00:00011 September 2018 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Non-Functional ENS 529092017-08-16T14:39:00016 August 2017 14:39:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Technical Support Center ENS 498642014-03-01T16:25:0001 March 2014 16:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Sample Flow for Main Stack Wide Range Radiation Monitor ENS 498102014-02-09T06:00:0009 February 2014 06:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communications Capability ENS 494802013-10-29T09:00:00029 October 2013 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Main Stack Radiation Monitors Removed from Service ENS 484552012-10-30T04:30:00030 October 2012 04:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens Due to Impacts from Hurricane Sandy ENS 477862012-03-29T08:00:00029 March 2012 08:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Outage ENS 475812012-01-09T22:22:0009 January 2012 22:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Determined to Be Non-Functional ENS 464932010-12-20T12:00:00020 December 2010 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Maintenance ENS 462692010-09-22T21:53:00022 September 2010 21:53:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Sirens Unavailable Due to Inclement Weather ENS 450762009-05-18T08:50:00018 May 2009 08:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Hvac Rendered Non-Functional Due to Planned Maintenance ENS 446442008-11-07T23:00:0007 November 2008 23:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Loss of Emergency Phone Service ENS 440022008-02-22T10:30:00022 February 2008 10:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Commercial and Emergency Phone Systems ENS 439862008-02-14T11:47:00014 February 2008 11:47:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Power Outage ENS 419402005-08-23T10:13:00023 August 2005 10:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Technical Support Center (Tsc) ENS 418082005-06-28T18:00:00028 June 2005 18:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Inoperable ENS 401772003-09-19T05:45:00019 September 2003 05:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to the Technical Support Center ENS 401712003-09-19T00:00:00019 September 2003 00:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of 27 of 97 Emergency Sirens Due to Storm 2023-05-09T18:55:00 [Table view] | |
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