ENS 51664
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ENS Event | |
|---|---|
10:00 Jan 20, 2016 | |
| Title | Technical Support Center Out Of Service For Planned Preventative Maintenance |
| Event Description | At 0400 CST on Wednesday, January 20, 2016, the Dresden Nuclear Power Station (DNPS) Technical Support Center (TSC) emergency ventilation system will be removed from service for planned maintenance activities. During the maintenance, the TSC Ventilation will be shut down. The TSC air filtration fan and dampers will be non-functional, rendering the TSC HVAC accident mode non-functional. This maintenance is scheduled to minimize out of service time. The planned TSC ventilation outage is scheduled to be completed in approximately 43 hours4.976852e-4 days <br />0.0119 hours <br />7.109788e-5 weeks <br />1.63615e-5 months <br />.
Contingency plans are in place so that if an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing Emergency Planning (EP) procedures and checklists. If radiological or environmental conditions require TSC facility evacuation during ventilation system restoration; the Station Emergency Director will relocate the TSC staff in accordance with station procedures. The NRC Resident Inspector has been notified.
At 2223 CDT on 1/21/16, Dresden TSC Ventilation was restored. The Dresden TSC Ventilation is functional at this time. The NRC Resident Inspector has been notified. Notified R3DO (Cameron). |
| Where | |
|---|---|
Dresden  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-15.32 h-0.638 days <br />-0.0912 weeks <br />-0.021 months <br />) | |
| Opened: | Robert Montgomery 18:41 Jan 19, 2016 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Jan 22, 2016 |
| 51664 - 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 563612023-02-06T11:30:0006 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 525422017-02-08T14:51:0008 February 2017 14:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Ventilation System Inoperable ENS 523702016-11-16T17:05:00016 November 2016 17:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Inoperable ENS 521072016-07-20T16:30:00020 July 2016 16:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out-Of-Service for Planned Preventative Maintenance ENS 520982016-07-18T20:00:00018 July 2016 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communications Capability ENS 516642016-01-20T10:00:00020 January 2016 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Preventative Maintenance ENS 512322015-07-15T05:04:00015 July 2015 05:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Planned Maintenance ENS 511732015-06-23T08:42:00023 June 2015 08:42:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Preparedness Capability Due to Phone System Failures ENS 507592015-01-26T09:55:00026 January 2015 09:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Preventative Maintenance ENS 502892014-07-21T10:25:00021 July 2014 10:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Preventative Maintenance ENS 497872014-02-03T06:43:0003 February 2014 06:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Ventilation System Out of Service for Planned Maintenance ENS 491882013-07-14T21:00:00014 July 2013 21:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Preventative Maintenance ENS 471192011-08-03T09:00:0003 August 2011 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Preventative Maintenance ENS 469012011-05-28T14:12:00028 May 2011 14:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Inbound Phone Call Capabilities on Commercial and Fts Lines ENS 461062010-07-19T04:30:00019 July 2010 04:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications Capability Due to Planned At&T Fiber Optic Cable Outage ENS 459512010-05-24T22:25:00024 May 2010 22:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Declared Inoperable ENS 455502009-12-08T19:28:0008 December 2009 19:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Preventative Maintenance ENS 441302008-04-09T21:15:0009 April 2008 21:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of All Ens Telephone Lines on Site After Maintenance ENS 407462004-05-14T00:15:00014 May 2004 00:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ens and Commercial Phone Lines to Control Rooms 2023-02-06T11:30:00 | |
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