ENS 47749
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ENS Event | |
|---|---|
19:30 Mar 11, 2012 | |
| Title | Technical Support Center Backup Diesel Generator Declared Non-Functional |
| Event Description | On March 11, 2012, a maintenance test of the Technical Support Center (TSC) diesel generator was performed. This diesel generator supplies backup A/C power to the TSC in the event of a loss of normal power. During this test, with the diesel generator supplying power to the TSC, two unexpected momentary losses of normal lighting to the TSC were observed. Following this event, the TSC diesel generator was declared non-functional.
High-priority actions to troubleshoot and repair the TSC diesel generator were taken following this event. However, as of 1200 CDT on March 16, 2012, troubleshooting activities are still ongoing, and the cause of the event has not yet been identified. Normal power to the TSC has been available throughout this event, and the TSC is considered functional. However, due to the duration of the TSC diesel generator non-functionality, Callaway Plant is reporting this condition in accordance with 10 CFR 50.72(b)(3)(xiii) for a loss of emergency assessment capability. Please note that, in the event of a complete loss of power to the TSC concurrent with a plant emergency, the designated backup facilities will be used in accordance with the Callaway Plant emergency preparedness program procedures. The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Callaway  Missouri (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+114.98 h4.791 days <br />0.684 weeks <br />0.157 months <br />) | |
| Opened: | Micah Benningfield 14:29 Mar 16, 2012 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Mar 16, 2012 |
| 47749 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 532032018-02-12T10:12:00012 February 2018 10:12:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ventilation Identified During Technical Support Center Test ENS 516492016-01-12T18:53:00012 January 2016 18:53:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ventilation System to Emergency Off-Site Facility ENS 493982013-10-01T03:57:0001 October 2013 03:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Off-Site Emergency Operations Facility Declared Inoperable Due to Air In-Leakage ENS 484422012-10-25T14:30:00025 October 2012 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Emergency Assessment During Planned Modifications ENS 482452012-08-28T20:00:00028 August 2012 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Determined to Be Non-Functional Due to Low Recirc Flow ENS 481122012-07-17T16:40:00017 July 2012 16:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Non-Functional Due to Degraded Charcoal Adsorber ENS 479302012-05-17T09:38:00017 May 2012 09:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Non-Functional Due to Failed Return Fan ENS 477492012-03-11T19:30:00011 March 2012 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Backup Diesel Generator Declared Non-Functional ENS 473152011-10-03T13:50:0003 October 2011 13:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 472912011-09-25T23:04:00025 September 2011 23:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 465812011-02-01T20:30:0001 February 2011 20:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Severe Weather Conditions ENS 461562010-08-05T20:00:0005 August 2010 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of All Power and Emergency Response Function at the Technical Support Center Due to Scheduled Maintenance ENS 454272009-10-12T09:00:00012 October 2009 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Inoperable Due to Loss of Ventilation ENS 443812008-08-04T14:46:0004 August 2008 14:46:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Loss of Erds for Process Computer Upgrade ENS 436112007-08-31T12:03:00031 August 2007 12:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Capability - Tsc Support Center (Tsc) Due to Planned Electrical Maintenance ENS 435612007-08-13T15:00:00013 August 2007 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Ventilation Inoperable ENS 430172006-12-01T12:30:0001 December 2006 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Plant Access ENS 425482006-05-03T12:00:0003 May 2006 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Response Capability - Technical Support Center (Tsc) ENS 424972006-04-13T12:38:00013 April 2006 12:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Capability - Technical Support Center (Tsc) ENS 417772005-06-15T13:02:00015 June 2005 13:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Offsite Facility Declared Inoperable Due to Air Filtration Fan Failure to Start ENS 413292005-01-13T11:04:00013 January 2005 11:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Offsite Communications and Ens ENS 413072005-01-04T18:30:0004 January 2005 18:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Site Had 86.2% of Their Emergency Alert Sirens Inoperable ENS 412912004-12-24T15:27:00024 December 2004 15:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Response Capability - Emergency Offsite Facility ENS 411912004-11-11T10:10:00011 November 2004 10:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Offsite Facility Declared Inoperable Due to Ventilation Failure ENS 408892004-07-21T16:55:00021 July 2004 16:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Eof Declared Inoperable Due to Unacceptable Air Flow Rates in Filtration Mode ENS 408612004-07-10T10:59:00010 July 2004 10:59:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication at the Technical Support Center Due to Scheduled Maintenance ENS 404622004-01-21T18:30:00021 January 2004 18:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Notification Siren Temperature Sensitivity 2018-02-12T10:12:00 | |
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