ENS 43561
ENS Event | |
|---|---|
15:00 Aug 13, 2007 | |
| Title | Emergency Operations Facility Ventilation Inoperable |
| Event Description | This event is being reported under 10CFR50.72(b)(3)(xiii) for a major loss of offsite emergency response capability.
At 2325 Central Daylight Time (CDT) on 8/12/2007, Callaway Plant received a trouble alarm for the Emergency Operations Facility (EOF). Investigation revealed the EOF had lost one phase of incoming rural electric power which is believed to have been caused by a severe thunderstorm in the area. At 0001 CDT on 8/13/2007, the EOF diesel generator was started and aligned to provide power to all building loads. An EOF functionality evaluation was performed for a loss on normal power with the EOF being supplied from the diesel generator and pre-existing degraded air conditioning cooling capacity. The evaluation concluded that the EOF was fully functional. At approximately 1000 CDT on 8/13/2007, maintenance personnel reported to the Control Room that the emergency ventilation system in the EOF was not functional based on the pressurization fans rotating in reverse. Three phase electrical loads at the EOF are incorrectly polarized apparently due to improper terminations at the diesel generator. If an emergency condition occurs during the time repairs are being made, the EOF will be utilized as long as radiological conditions allow. Procedure EIP-ZZ-C0010, EMERGENCY OPERATIONS FACILITY OPERATIONS, section 4.4, directs EOF management to evaluate the need to relocate operations to the Backup Emergency Operations Facility, as required. Affected emergency responders have been notified of facility conditions and a courtesy notification has been made to the State Operations Branch Chief. The licensee has notified the NRC Resident Inspector.
The EOF (Emergency Offsite Facility) rural electric power was restored to the building at 1730 (CDT) on 8/13/2007. At 0059 (CDT) 8/14/2007 the EOF diesel work was completed, restored and retested satisfactorily. Building temperatures were verified to be at 85 deg F and lowering, this is within the 55-95 deg F range for functionality. The EOF is considered restored to a fully Functional Status. The licensee notified the NRC Resident Inspector. Notified R4DO (Gaddy) |
| Where | |
|---|---|
Callaway  Missouri (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-0.48 h-0.02 days <br />-0.00286 weeks <br />-6.57504e-4 months <br />) | |
| Opened: | Gary Olmstead 14:31 Aug 13, 2007 |
| NRC Officer: | John Knoke |
| Last Updated: | Aug 14, 2007 |
| 43561 - 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 | |