ENS 53286
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ENS Event | |
|---|---|
21:35 Mar 23, 2018 | |
| Title | Loss of Emergency Assessment Capability |
| Event Description | This report is made for a loss of Emergency Assessment Capability associated with Emergency Action Levels for Toxic and Flammable Gas and is reportable under 10 CFR 50.72 (b)(3)(xiii). During an emergency equipment inventory it was identified that methods were not available to detect levels of toxic or flammable gas at the IDLH (Immediately Dangerous to Life and Health) level for a number of substances. The IDLH is used to assess the Alert Emergency Action Level.
The ability of the Control Room Staff to detect and respond to the presence of toxic or flammable gas is unaffected. Because there have been no chemical spills or releases that would require sampling to be performed, the health and safety of the public was not affected. The NRC Resident Inspector has been notified. The State of Minnesota will be notified. |
| Where | |
|---|---|
Prairie Island  Minnesota (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+3.57 h0.149 days <br />0.0212 weeks <br />0.00489 months <br />) | |
| Opened: | Don Hartinger 01:09 Mar 24, 2018 |
| NRC Officer: | Steven Vitto |
| Last Updated: | Mar 24, 2018 |
| 53286 - 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 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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