ENS 49580
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ENS Event | |
|---|---|
10:00 Nov 26, 2013 | |
| Title | Discharge Canal Radiation Monitor Removed from Service |
| Event Description | Planned preventative maintenance on the discharge canal piping will remove the discharge canal radiation monitor from service. This represents a loss of emergency assessment capability under NUREG-1022, revision 3, specific to RU1.1, RU1.2, RA1.1, and RA1.2. The planned maintenance is expected to last 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br />.
The NRC Senior Resident Inspector was notified [by the licensee] prior to removing the discharge canal radiation monitor from service. |
| Where | |
|---|---|
Monticello  Minnesota (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-4.87 h-0.203 days <br />-0.029 weeks <br />-0.00667 months <br />) | |
| Opened: | Rick Davidson 05:08 Nov 26, 2013 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Nov 26, 2013 |
| 49580 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 532852018-03-23T17:30:00023 March 2018 17:30:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessement Capability ENS 527812017-06-01T21:45:0001 June 2017 21:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Lost Ability to Receive Meteorogic Data ENS 521532016-08-04T19:15:0004 August 2016 19:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Battery Room Fire Detection System Inoperable ENS 504962014-09-26T03:00:00026 September 2014 03:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness, 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Containment Isolation Declared Inoperable Due to Relay Age ENS 504112014-08-28T14:00:00028 August 2014 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Both Discharge Canal Radiation Monitors Removed from Service for Planned Maintenance ENS 503642014-08-14T12:55:00014 August 2014 12:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Service Water Radiation Monitor Nonfunctional for Planned Maintenance ENS 503272014-07-31T12:20:00031 July 2014 12:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Service Water Radiation Monitor Out of Service for Maintenance ENS 502252014-06-25T05:00:00025 June 2014 05:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Various Telecommunication Lines and Erds Outage for Planned Maintenance ENS 501752014-06-05T21:01:0005 June 2014 21:01:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Discharge Canal Radiation Monitors Removed from Service for Planned Maintenance ENS 501362014-05-23T16:30:00023 May 2014 16:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability Due to Failed Area Radiation Monitor ENS 500772014-05-01T13:40:0001 May 2014 13:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Service Water Radiation Monitor Taken Out of Service for Planned Maintenance ENS 500052014-04-07T20:00:0007 April 2014 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Removal of Radiation Monitors from Service for Planned Maintenance ENS 498462014-02-21T07:30:00021 February 2014 07:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failed Power Supply Affecting Radiation Monitors ENS 498202014-02-12T14:15:00012 February 2014 14:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Service Water Radiation Monitor Removed from Service for Planned Maintenance ENS 495862013-11-27T13:40:00027 November 2013 13:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Service Water Radiation Monitor Removed from Service ENS 495802013-11-26T10:00:00026 November 2013 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Discharge Canal Radiation Monitor Removed from Service ENS 493902013-09-27T18:30:00027 September 2013 18:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Radiation Monitors Out of Service ENS 493882013-09-27T13:20:00027 September 2013 13:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Planned Maintenance ENS 490482013-05-17T20:27:00017 May 2013 20:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer Removed from Service for Maintenance and Upgrades ENS 486182012-12-21T13:30:00021 December 2012 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Data System (Erds) ENS 483782012-10-04T21:00:0004 October 2012 21:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Primary and Backup Meteorological Towers Out of Service ENS 483452012-09-26T13:00:00026 September 2012 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Planned Maintenance Activity ENS 481092012-07-16T19:03:00016 July 2012 19:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ac Power to Emergency Operations Facility ENS 479502012-05-22T22:32:00022 May 2012 22:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Fifty-Eight Sirens Were Not Functional in Wright County Minnesota ENS 475432011-12-21T18:00:00021 December 2011 18:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Computer Calculation Incorrect for Back-Up Meteorological Data ENS 472122011-08-29T11:00:00029 August 2011 11:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Planned Maintenance Activity ENS 468332011-05-10T14:15:00010 May 2011 14:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 467272011-04-05T19:30:0005 April 2011 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Loss of Emergency Assessment Capability for Scheduled Maintenace ENS 462802010-09-25T07:57:00025 September 2010 07:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Erds, Spds and Tsc Phone Lines Due to Uninteruptable Power Supply Failure ENS 461522010-08-06T12:00:0006 August 2010 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Planned Maintenance Activity ENS 460162010-06-16T15:15:00016 June 2010 15:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens ENS 458302010-04-10T13:00:00010 April 2010 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Phone System Out of Service for Planned Maintenance ENS 452472009-08-06T11:00:0006 August 2009 11:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance to Affect Technical Support Center ENS 447972009-01-22T15:30:00022 January 2009 15:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Phone Communications ENS 438472007-12-17T08:03:00017 December 2007 08:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability (Spds) ENS 437882007-11-16T17:00:00016 November 2007 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Degredation of Emergency Preparedness Response Capabilities ENS 434922007-07-17T12:00:00017 July 2007 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Inoperable Due to Planned Relocation 2018-03-23T17:30:00 | |
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