ENS 48462
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ENS Event | |
|---|---|
04:00 Aug 1, 2009 | |
| Title | Historical Unavailability of Technical Support Center Ventilation Due to Maintenance |
| Event Description | This non-emergency event report is being made per 10CFR50.72(a)(1)(ii) which requires reporting events that occurred within three years of the date of discovery.
Based on operating experience, Engineering personnel reviewed past maintenance activities involving the Technical Support Center (TSC) ventilation system (VH system) and identified four (4) occasions between August 2009 and October 2012 (three years) where the VH system functions could not have been restored within the required facility activation time. The specific instances have been documented in our corrective action program. If an emergency had been declared during these period and TSC ERO activation was required, the TSC would have been staffed and activated unless the TSC came uninhabitable due to ambient temperatures, radiological or other conditions. If relocation of the TSC staff was necessary, the Station Emergency Coordinator would relocate the staff to the alternate TSC location. Practices and processes have been revised to improve control of TSC maintenance activities and to improve facility availability going forward. In addition, site reporting guidance has been revised to assure timely reporting for these types of events if required. This event is reportable per 10CFR50.72(b)(3)(xiii) as described in NUREG-1022, Rev. 2 since the maintenance activities affected an Emergency Response Facility. The licensee will notify the NRC Resident Inspector. |
| Where | |
|---|---|
Mcguire  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+28497.57 h1,187.399 days <br />169.628 weeks <br />39.036 months <br />) | |
| Opened: | Eric G. Blough 13:34 Oct 31, 2012 |
| NRC Officer: | Dong Park |
| Last Updated: | Oct 31, 2012 |
| 48462 - 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 | Not Critical |
| Scram | No |
| Before | Hot Shutdown (0 %) |
| After | Hot Shutdown (0 %) |
WEEKMONTHYEARENS 572252024-07-12T17:37:00012 July 2024 17:37:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System NON-FUNCTIONAL ENS 557582022-02-25T16:33:00025 February 2022 16:33:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center (TSC) ENS 547692020-07-10T13:00:00010 July 2020 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Common Emergency Operations Facility Maintenance ENS 544722020-01-13T14:10:00013 January 2020 14:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Technical Support Center Power Modification ENS 534982018-07-09T04:00:0009 July 2018 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Loss of Technical Support Center (Tsc) Ventilation ENS 533072018-04-02T14:24:0002 April 2018 14:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Technical Support Center (Tsc) Modification ENS 532402018-03-01T20:55:0001 March 2018 20:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Loss of Technical Support Center ENS 522192016-09-02T23:22:0002 September 2016 23:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spent Fuel Pool Area Radiation Monitor Lost Signal ENS 521802016-08-15T14:30:00015 August 2016 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Facility Upgrade ENS 521452016-08-02T10:30:0002 August 2016 10:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out-Of-Service ENS 518282016-03-28T23:00:00028 March 2016 23:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Meteorological Tower ENS 500952014-05-08T08:29:0008 May 2014 08:29:00 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 34 Emergency Sirens ENS 500622014-04-27T20:00:00027 April 2014 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out-Of-Service ENS 482762012-09-05T14:40:0005 September 2012 14:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Preventative Maintenance on Hvac System ENS 482662012-09-02T16:00:0002 September 2012 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Emergency Operations Facility ENS 484622009-08-01T04:00:0001 August 2009 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Historical Unavailability of Technical Support Center Ventilation Due to Maintenance ENS 443392008-07-07T18:22:0007 July 2008 18:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failure of the Alert Notification System ENS 422082005-12-15T18:04:00015 December 2005 18:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of 38 Out of 67 Emergency Sirens Due to Weather ENS 412882004-12-23T19:10:00023 December 2004 19:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications ENS 411572004-10-28T17:14:00028 October 2004 17:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Inoperable 2024-07-12T17:37:00 | |
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