ENS 56804
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ENS Event | |
---|---|
16:10 Oct 19, 2023 | |
Title | Loss of Seismic Monitoring Capability |
Event Description | The following information was provided by the licensee via phone and email:
Reporting due to loss of emergency preparedness capabilities. Seismic monitoring capability is non-functional due to loss of power. These monitors do not have a credited compensatory measure. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: The NRC Resident Inspector has been notified. The licensee intends to notify state and local officials. |
Where | |
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Prairie Island ![]() Minnesota (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+3.8 h0.158 days <br />0.0226 weeks <br />0.00521 months <br />) | |
Opened: | Brian Johnson 19:58 Oct 19, 2023 |
NRC Officer: | Ernest West |
Last Updated: | Oct 19, 2023 |
56804 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | A/R |
Before | Power Operation (100 %) |
After | Hot Standby (0 %) |
WEEKMONTHYEARENS 568042023-10-19T16:10:00019 October 2023 16:10:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Seismic Monitoring Capability ENS 548032020-07-29T00:49:00029 July 2020 00:49:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failed Radiation Detector ENS 537002018-10-28T05:00:00028 October 2018 05:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitoring Panel System Inoperable ENS 532862018-03-23T21:35:00023 March 2018 21:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 515282015-11-11T14:26:00011 November 2015 14:26:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Shield Building Vent Gas Radiation Monitor Out of Service for Planned Maintenance ENS 512662015-07-27T14:02:00027 July 2015 14:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage for Plant Computer Systems ENS 510132015-04-25T02:25:00025 April 2015 02:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Out-Of-Service Radiation Monitors ENS 509482015-04-02T17:30:0002 April 2015 17:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitor Not Available for Emergency Plan Assessment ENS 506722014-12-12T08:48:00012 December 2014 08:48:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Auxiliary Building Normal Ventilation Radiation Monitor Failed ENS 506522014-12-03T15:50:0003 December 2014 15:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Control Room Area Radiation Monitor Failed Low ENS 504872014-09-24T12:28:00024 September 2014 12:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Shield Building Vent Gas Radiation Monitor Out of Service for Planned Maintenance ENS 504462014-09-11T15:09:00011 September 2014 15:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Shield Building Vent Gas Radiation Monitor Out of Service for Planned Maintenance ENS 504242014-09-04T13:43:0004 September 2014 13:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 1R-50 Shield Building High Range Vent Gas Radiation Monitor Out of Service for Planned Maintenance ENS 502662014-07-10T13:38:00010 July 2014 13:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness High Range Shield Building Vent Stack Gas Monitor Removed from Service for Maintenance ENS 500512014-04-23T15:00:00023 April 2014 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 2R-22 Shield Building Vent Gas Radiation Monitor Removed from Service for Planned Maintenance ENS 500012014-04-04T19:53:0004 April 2014 19:53:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitor Declared Non-Functional Due to Spurious Alarm ENS 499432014-03-21T18:00:00021 March 2014 18:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Shield Building Vent Gas Rad Monitors Out of Service for Planned Maintenance ENS 498242014-02-12T17:13:00012 February 2014 17:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Circulating Water Discharge Monitor Out of Service ENS 498062014-02-07T12:20:0007 February 2014 12:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Shield Building Vent Gas Radiation Monitor Failure ENS 497992014-02-06T13:30:0006 February 2014 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service for Maintenance ENS 497452014-01-20T08:16:00020 January 2014 08:16:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Shield Building Gaseous Radiation Monitor ENS 495072013-11-06T06:58:0006 November 2013 06:58:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness R-21 Circulating Water Discharge Radiation Monitor Planned Outage ENS 492592013-08-09T15:00:0009 August 2013 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service ENS 486202012-12-21T13:30:00021 December 2012 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Data System (Erds) ENS 448282009-02-04T19:20:0004 February 2009 19:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Sirens Out of Service Due to Planned Maintenance ENS 441752008-04-29T12:50:00029 April 2008 12:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Tsc Ventillation During Scheduled Maintenance ENS 441572008-04-23T09:10:00023 April 2008 09:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Ventilation System Considered Non-Functional ENS 440712008-03-17T13:00:00017 March 2008 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Degraded Habitability Control ENS 440572008-03-12T19:30:00012 March 2008 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Long Term Habitability of Technical Support Center Under Accident Dose Analysis Exceeds Acceptance Criteria ENS 435152007-07-24T07:56:00024 July 2007 07:56:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Inoperable ENS 422502006-01-11T13:43:00011 January 2006 13:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Modification to the Unit 2 Process Computer That Will Impact Erds and Spds ENS 421882005-12-05T15:00:0005 December 2005 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer System (Ppcs) Will Be Taken Out of Service for Approximatley 2 Weeks. 2023-10-19T16:10:00 | |
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