ENS 43511
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ENS Event | |
|---|---|
13:32 Jul 23, 2007 | |
| Title | Technical Support Center (Tsc) Outage for Planned Maintenance |
| Event Description | Planned preventive maintenance activities are being performed today (July 23, 2007) on the Hatch Nuclear Plant's Alternate Supply Breaker (5C) to the Diesel Generator Building Motor Control Center (MCC) (MPL # 1R24-S026). This MCC feeds the Technical Support Center (TSC) 480V AC distribution panel (MPL# 1R25-S102) which supplies power to the TSC HVAC. The work activities affecting the TSC are planned to be performed and completed expeditiously within one work shift (less than or equal to 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />). During this work activity the TSC HVAC system will be removed from service.
If an emergency condition occurs that requires activation of the Technical Support Center during the time these work activities are being performed, it will take no more than three hours to return the equipment back to functional status, dependent on the stage of the work activity at the time the emergency occurs. Plans are to utilize the TSC for any declared emergency during the time these work activities are being performed, as long as radiological conditions allow. Procedure 73EP-EIP-063-0, Technical Support Center Activation provides instructions to direct TSC management to the Control Room and TSC support personnel to the Simulator Building to continue TSC activities if it is necessary to relocate from the primary TSC. This event is reportable per 10CFR50.72(b)(3)(xiii) as described in NUREG-1022, Rev 1 since this work activity affects an emergency response facility for the duration of the evolution. The licensee informed the NRC Resident Inspector.
Update: On 07/23/07 at 1935 EDT, the HVAC System for the TSC was returned to functional status following the replacement of the alternate supply breaker to MCC 1R24S026. 1R24S026 was energized restoring power to the TSC HVAC System." R2DO (M. Lesser) notified. The NRC Resident Inspector was notified of this event by the licensee. |
| Where | |
|---|---|
Hatch  Georgia (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.53 h-0.147 days <br />-0.021 weeks <br />-0.00484 months <br />) | |
| Opened: | Andy Dismuke 10:00 Jul 23, 2007 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Jul 23, 2007 |
| 43511 - NRC Website | |
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 505882014-11-02T12:20:0002 November 2014 12:20:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Operations Support Center Ventilation System Out of Service ENS 500722014-04-30T12:00:00030 April 2014 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Out of Service Due to Maintenance ENS 492152013-07-25T15:35:00025 July 2013 15:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Malfunctioning Noaa Tone Alert Radio System ENS 491342013-06-19T07:07:00019 June 2013 07:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service ENS 481592012-08-04T14:35:0004 August 2012 14:35:00 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 Offsite Notification Due to Loss of Tone Alert Radio ENS 480672012-07-03T14:32:0003 July 2012 14:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Outage Resulting from Maintenance ENS 480442012-06-22T17:30:00022 June 2012 17:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Planned Maintenance Activity ENS 478112012-04-06T08:43:0006 April 2012 08:43:00 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 Loss of Tone Alert System ENS 477302012-03-12T12:27:00012 March 2012 12:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance Window on Technical Support Center Ventilation ENS 476772012-02-18T13:36:00018 February 2012 13:36:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Spds and Erds Due to Hard Drive Failure ENS 474162011-11-05T13:00:0005 November 2011 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Maintenance ENS 473002011-09-28T14:41:00028 September 2011 14:41:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service ENS 471102011-07-30T14:55:00030 July 2011 14:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Hvac Out of Service ENS 471042011-07-28T03:20:00028 July 2011 03:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Non-Functional Technical Support Center (Tsc) Climate Control System ENS 470652011-07-16T22:30:00016 July 2011 22:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Non-Functional ENS 470272011-07-06T13:03:0006 July 2011 13:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Operations Support Center Out of Service Due to Hvac Maintenance ENS 468412011-05-11T13:00:00011 May 2011 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Ventilation Roll Filter Maintenance ENS 467172011-04-01T08:04:0001 April 2011 08:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Area Telephone Outage Affects Emergency Notification System Phone ENS 462112010-08-28T21:00:00028 August 2010 21:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of the Operations Support Center Due to Inoperable Emergency Hvac ENS 460932010-07-14T17:55:00014 July 2010 17:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Out of Service for Planned Maintenance ENS 459472010-05-23T20:30:00023 May 2010 20:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Nonfunctional Technical Support Center Ventilation ENS 457752010-03-18T22:16:00018 March 2010 22:16:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Tone Alert Radios ENS 455292009-12-01T14:18:0001 December 2009 14:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Health Physics Control Point and Chem Lab Hvac Out of Service for Planned Maintenance ENS 453712009-09-21T12:30:00021 September 2009 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable Due to Planned Maintenance ENS 451142009-06-05T13:30:0005 June 2009 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Techncial Support Center Ventilation System Out of Service ENS 446582008-11-14T01:31:00014 November 2008 01:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Prompt Notification Capability ENS 446542008-11-13T06:02:00013 November 2008 06:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of National Weather Service Prompt Notification Messages ENS 446462008-11-08T13:35:0008 November 2008 13:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Osc Inoperable Due to Planned Maintenance on Motor Control Center ENS 443012008-06-17T09:43:00017 June 2008 09:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Hvac System Rendered Nonfunctional ENS 440932008-03-25T19:22:00025 March 2008 19:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Health Physics Ventilation System Used for Emergency Response ENS 440072008-02-25T10:40:00025 February 2008 10:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Operations Support Center Rendered Non-Functional During Planned Maintenance ENS 439682008-02-07T08:40:0007 February 2008 08:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Osc Hvac System Did Not Start as Required ENS 436982007-10-07T05:15:0007 October 2007 05:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Prompt Notification Message System ENS 436582007-09-22T07:15:00022 September 2007 07:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Jacksonville National Weather Service Land Lines ENS 436242007-09-08T16:02:0008 September 2007 16:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Prompt Notification System Not Available ENS 436072007-08-30T12:58:00030 August 2007 12:58:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Electrical Maintenance Removes Tsc Hvac from Service ENS 435112007-07-23T13:32:00023 July 2007 13:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Outage for Planned Maintenance ENS 433262007-04-30T13:00:00030 April 2007 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Facility - Tsc Ventilation System Unavailable Due to Maintenance ENS 429222006-10-20T13:25:00020 October 2006 13:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance for Hatch Emergency Hvac Health Physics Control Point/Chemistry Lab Area ENS 428652006-09-27T06:47:00027 September 2006 06:47:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Hvac Removed from Service for Maintenance ENS 426682006-06-27T08:33:00027 June 2006 08:33:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ens Communications with the Site ENS 426132006-06-01T13:43:0001 June 2006 13:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Hvac Inoperable ENS 425982006-05-23T12:00:00023 May 2006 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Ventilation Taken Out of Service for Maintenance ENS 419552005-08-28T06:25:00028 August 2005 06:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Falure of Noaa Weather Service Radio ENS 416802005-05-09T22:00:0009 May 2005 22:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failure of the Safety Parameters Display System (Spds) ENS 416322005-04-25T17:00:00025 April 2005 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness the Plant'S Tsc (Technical Support Center) Has Been Taken Out of Service Due to Planned Maintenance Work ENS 409262004-08-05T12:00:0005 August 2004 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Prompt Notification System ENS 406492004-04-06T04:10:0006 April 2004 04:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Momentary Loss of Noaa Weather Radio System ENS 406472004-04-05T23:16:0005 April 2004 23:16:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Brief Loss of Noaa Weather Radio Capability ENS 406202004-03-29T12:38:00029 March 2004 12:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Noaa Weather Radio System ENS 404422004-01-13T18:12:00013 January 2004 18:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication and Emergency Notification System 2014-04-30T12:00:00 | |
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