ENS 49599
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ENS Event | |
|---|---|
04:00 Dec 3, 2013 | |
| Title | Technical Support Center (Tsc) Non-Functional Due To Planned Maintenance |
| Event Description | On December 2, 2013, activities are scheduled that will render the Technical Support Center (TSC) non-functional by removing the normal and emergency ventilation system from service. These activities are being performed in support of planned preventive maintenance. In preparation for these normal and emergency ventilation system outages, the TSC emergency responders were notified that if an emergency occurred during this outage the Emergency Coordinator and the TSC staff involved with classification, notification and PARS should report to the Work Execution Center. All other TSC personnel should report to the Operational Support Center. The duration of this TSC outage is expected to be less than 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The NRC Operations Center will be provided an update to this notification when the TSC normal and emergency ventilation is restored. This 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> notification in accordance with 10 CFR 50.72(b)(3)(xiii).
The licensee notified the NRC Resident Inspector.
The TSC is fully functional. The licensee will notify the NRC Resident Inspector. Notified R3DO (Riemer). |
| Where | |
|---|---|
Byron  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-5.98 h-0.249 days <br />-0.0356 weeks <br />-0.00819 months <br />) | |
| Opened: | Leo Wrede 22:01 Dec 2, 2013 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Dec 4, 2013 |
| 49599 - 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 566982023-08-25T21:00:00025 August 2023 21:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 563542023-02-06T11:30:0006 February 2023 11:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications and Assessment Capabilities ENS 557692022-03-06T03:15:0006 March 2022 03:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Degradation of Technical Support Center ENS 547102020-05-13T15:00:00013 May 2020 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Facility ENS 529192017-08-21T02:08:00021 August 2017 02:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Non-Functional Tsc Ventilation ENS 521002016-07-18T20:00:00018 July 2016 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communications Capability ENS 514122015-09-17T05:30:00017 September 2015 05:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Control Room Area Radiation Monitors Not Able to Provide Radiation Level Information ENS 514012015-09-17T03:00:00017 September 2015 03:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Seismic Monitoring Instrumentation During Planned Maintenance ENS 509882015-04-16T10:00:00016 April 2015 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Scheduled Maintenance Affecting Technical Support Center Hvac ENS 508812015-03-12T14:00:00012 March 2015 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of the Seismic Monitoring Computer ENS 495992013-12-03T04:00:0003 December 2013 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Non-Functional Due to Planned Maintenance ENS 493752013-09-21T20:31:00021 September 2013 20:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Commercial and Ens Communications Due to an Area Phone Outage ENS 491382013-06-20T16:18:00020 June 2013 16:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Removed from Service for Maintenance ENS 482902012-09-10T14:00:00010 September 2012 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer Removed from Service for Maintenance ENS 472772011-09-19T15:07:00019 September 2011 15:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds and Erds Unavailable During Replacement of Plant Process Computer System ENS 459982010-06-10T13:30:00010 June 2010 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Maintenance ENS 459712010-06-01T17:39:0001 June 2010 17:39:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Discovered to Be Non-Functional ENS 450572009-05-12T07:44:00012 May 2009 07:44:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 450202009-04-25T15:48:00025 April 2009 15:48:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Erds Unavailability Due to Plant Process Computer Failure ENS 449012009-03-12T09:20:00012 March 2009 09:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Process Computer and Erds Unavailable for Greater than 60 Minutes ENS 443842008-08-04T23:45:0004 August 2008 23:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of 84 of 94 Emergency Sirens Due to Inclement Weather ENS 427122006-07-18T02:46:00018 July 2006 02:46:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Evacuation Siren Failures Due to Thunderstorms 2023-08-25T21:00:00 | |
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