ENS 47780
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ENS Event | |
---|---|
09:25 Mar 28, 2012 | |
Title | Planned Maintenance on Tsc Ventilation System |
Event Description | Planned maintenance activities are in progress on Catawba Nuclear Station's Technical Support Center (TSC) Emergency Ventilation System. These planned activities include replacement of a relay and relay base that render the ventilation system temporarily inoperable.
The planned maintenance window is not expected to exceed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This report is being made in accordance with 10CFR50.72, criterion (b)(3)(xiii), and in accordance with NUREG-1022, Revision 2, as a condition that may impair the functionality of an Emergency Response Facility. The licensee has notified the NRC Resident Inspector. |
Where | |
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Catawba ![]() South Carolina (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+3.5 h0.146 days <br />0.0208 weeks <br />0.00479 months <br />) | |
Opened: | Duncan Hatfield 12:55 Mar 28, 2012 |
NRC Officer: | Bill Huffman |
Last Updated: | Mar 28, 2012 |
47780 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 553392021-07-04T13:11:0004 July 2021 13:11:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Seismic Monitoring for Emergency Plan Assessment ENS 549432020-10-11T07:15:00011 October 2020 07:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Long Term Habitability of the Technical Support Center Under Accident Dose Analysis Exceeds the Calculated Allowable Values ENS 548982020-09-12T21:48:00012 September 2020 21:48:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Emergency Assessment Capability ENS 548872020-09-06T07:45:0006 September 2020 07:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Long Term Habitability of Technical Support Center Under Accident Dose Analysis Exceeds Calculated Allowable Values ENS 547702020-07-10T13:00:00010 July 2020 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Common Emergency Operations Facility Maintenance ENS 547522020-06-22T01:00:00022 June 2020 01:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Technical Support Center Ventilation Maintenance ENS 542562019-04-29T02:00:00029 April 2019 02:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Discovered Condition ENS 516842016-01-25T15:30:00025 January 2016 15:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Discovered Condition ENS 516352016-01-05T16:20:0005 January 2016 16:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service ENS 511032015-05-29T16:30:00029 May 2015 16:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Discovered Condition ENS 503162014-07-29T09:00:00029 July 2014 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Hvac Removed from Service for Planned Maintenance ENS 499562014-03-25T03:00:00025 March 2014 03:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service Due to Planned Maintenance ENS 493192013-09-04T08:05:0004 September 2013 08:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service Due to Planned Maintenance ENS 493112013-08-28T05:48:00028 August 2013 05:48:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Planned Maintenance ENS 487172013-02-05T10:45:0005 February 2013 10:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Scheduled Maintenance ENS 485832012-12-12T20:27:00012 December 2012 20:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable for Emergency Assessment ENS 485022012-11-12T16:00:00012 November 2012 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Inoperable Numerous Times Over Previous Three Years Without Proper Reporting ENS 483042012-09-13T11:40:00013 September 2012 11:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Unavailable Due to Ventilation System Failure ENS 482942012-09-11T01:00:00011 September 2012 01:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable Due to Planned Maintenance ENS 482672012-09-02T16:00:0002 September 2012 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Emergency Operations Facility ENS 481262012-07-23T09:08:00023 July 2012 09:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Ventilation System Out of Service ENS 477802012-03-28T09:25:00028 March 2012 09:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on Tsc Ventilation System ENS 476952012-02-24T10:00:00024 February 2012 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance Will Result in the Technical Support Center Being Unavailable ENS 468402011-05-11T06:01:00011 May 2011 06:01:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of >25% of Emergency Notification System Sirens Due to Adverse Weather ENS 408532004-07-06T14:08:0006 July 2004 14:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Greater than 25% of the Emergency Sirens Found to Be Inoperable 2021-07-04T13:11:00 [Table view] | |
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