ENS 45128
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ENS Event | |
|---|---|
13:45 Jun 13, 2009 | |
| Title | Technical Support Center Ventilation System Out of Service |
| Event Description | Planned maintenance activities are being performed today (June 13, 2009) on the Vogtle Nuclear Plant's Technical Support Center (TSC) power sources. This work activity is planned to be performed and completed expeditiously within approximately 3 days (78 hours9.027778e-4 days <br />0.0217 hours <br />1.289683e-4 weeks <br />2.9679e-5 months <br />). This maintenance activity is to perform a transformer replacement, perform preventative maintenance on several circuit breakers, perform preventative maintenance on the TSC HVAC unit, repair a leak on the Back-Up D/G [diesel generator] which provides a back-up power supply to the TSC HVAC, and other minor maintenance activities.
If an emergency condition occurs that requires activation of the Technical Support Center during this work activity, contingency plans are in place to restore the TSC to fully functional status, with the time to restoration dependent on the stage of the work activity at the time the emergency occurs. Plans are to utilize the Shift Manager's Office in the Control Room as the Backup TSC for any declared emergency during the time the work activity is being performed. Procedure 91201-C, Activation and Operation of the Technical Support Center, provides instructions to direct TSC management to the Control Room to continue TSC activities if it is necessary to relocate from the primary TSC. At the beginning of the TSC outage, the ENN [Emergency Notification Network] and ERDS [Emergency Response Data System] will not be available until temporary power is being provided. This outage for the communications equipment will last from 2-4 hours, at which time they will be available. This event is reportable per 10 CFR 50.72 (b)(3)(xiii) as described in NUREG-1022, Rev. 2 since this work activity affects an emergency response facility for the duration of the evolution. The licensee has notified the NRC Resident Inspector. The licensee provided notification of this issue prior to initiation of the maintenance per the licensee's 10 CFR 50.54(q) evaluation for the activity. The licensee intends to update this report when the temporary modification is completed such that the ERDS system is returned to service.
The licensee has returned the ERDS system to service using temporary power. Preventive maintenance still continues on the TSC. The licensee has notified the NRC Resident Inspector. Notified R2DO (McCoy).
The ventilation system has been returned to its normal power supply at 1121 on 6/19/2009. The licensee will notify the NRC Resident Inspector. Notified the R2DO (Bartley). |
| Where | |
|---|---|
Vogtle  Georgia (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-4.43 h-0.185 days <br />-0.0264 weeks <br />-0.00607 months <br />) | |
| Opened: | Mike Henry 09:19 Jun 13, 2009 |
| NRC Officer: | Ryan Alexander |
| Last Updated: | Jun 19, 2009 |
| 45128 - 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 573612024-10-04T02:35:0004 October 2024 02:35:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Seismic Monitoring for Emergency Plan Assessment ENS 550552021-01-03T11:45:0003 January 2021 11:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Nonfunctional Seismic Monitoring System ENS 513432015-08-25T16:52:00025 August 2015 16:52:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Loss of Primary and Backup Meteorological Instrumentation ENS 512232015-07-13T12:30:00013 July 2015 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Primary and Backup Meteorological Towers to Be Removed from Service for Upgrade ENS 503472014-08-06T09:16:0006 August 2014 09:16:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Hvac and Filtration Removed from Service for Planned Maintenance ENS 502192014-06-20T15:00:00020 June 2014 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Plant Vent Effluent Monitors ENS 497182014-01-13T09:00:00013 January 2014 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Due to Planned Maintenance ENS 492722013-08-13T06:25:00013 August 2013 06:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Failure ENS 491442013-06-24T08:30:00024 June 2013 08:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on the Technical Support Center Backup Generator ENS 491402013-06-21T14:30:00021 June 2013 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Taken Out of Service for Planned Maintenance ENS 489882013-05-01T09:00:0001 May 2013 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 489852013-04-30T13:45:00030 April 2013 13:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on the Technical Support Center Support Systems ENS 484612012-10-31T11:42:00031 October 2012 11:42:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Outage Due to Planned Maintenance ENS 472872011-09-22T09:27:00022 September 2011 09:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Non-Functional Due to the Loss of the Tsc Chiller System ENS 472402011-09-04T14:20:0004 September 2011 14:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Lost Due to Failed Backup Diesel Generator Surveillance Test ENS 470322011-07-07T13:00:0007 July 2011 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Siren Outage ENS 465712011-01-26T13:30:00026 January 2011 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable Due to Planned Maintenance ENS 465252011-01-08T19:38:0008 January 2011 19:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Planned Maintenance ENS 464422010-11-29T21:12:00029 November 2010 21:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Computer Maintenance Outage ENS 463212010-10-08T15:00:0008 October 2010 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Integrated Plant Computer Removed from Service for Upgrade Work ENS 461602010-08-09T09:00:0009 August 2010 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Declared Out of Service for Planned Maintenance ENS 460842010-07-12T07:40:00012 July 2010 07:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Technical Support Center Outage ENS 453562009-09-17T17:52:00017 September 2009 17:52:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Functionality Out of Service ENS 453002009-08-26T13:00:00026 August 2009 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Response Capability Due to Maintenance Rendering Tsc Non-Functional ENS 451282009-06-13T13:45:00013 June 2009 13:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service ENS 450752009-05-17T13:21:00017 May 2009 13:21:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due Loss of Emergency Diesel Generator ENS 448412009-02-09T09:15:0009 February 2009 09:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Oos Due to Planned Hvac Maintenance ENS 446482008-11-09T20:30:0009 November 2008 20:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Hvac Out of Service ENS 445682008-10-16T05:56:00016 October 2008 05:56:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Non-Functional Technical Support Center ENS 444802008-09-10T21:11:00010 September 2008 21:11:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Hvac Emergency Backup Power Source Out of Service ENS 442262008-05-20T20:00:00020 May 2008 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Functionality to Technical Support Center ENS 438792008-01-02T08:31:0002 January 2008 08:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Tsc Radio System Due to Battery Backup Depletion During Power Supply Changeout ENS 435772007-08-18T01:58:00018 August 2007 01:58:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Public Alerting Sirens Inoperable for a Short Time Due to a Lightning Strike ENS 434542007-06-27T19:55:00027 June 2007 19:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Habitability Issue ENS 431872007-02-26T09:00:00026 February 2007 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Chiller Malfunction ENS 429162006-10-17T19:30:00017 October 2006 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Degraded Technical Support Center Ventilation Supply Fan ENS 418132005-06-30T12:00:00030 June 2005 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Alert Notification Radio Transmitter Discovered Inoperable 2024-10-04T02:35:00 | |
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