ENS 40178
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ENS Event | |
|---|---|
06:24 Sep 19, 2003 | |
| Title | Loss of Emergency Siren Capability Due to Adverse Weather Conditions |
| Event Description | TMI is notifying the NRC Operations Center in accordance with 10 CFR 50.72 (b)(2)(xi), Notification of Other Government Agency and 10 CFR 50.72 (b)(3)(xiii) Major Loss of Emergency Preparedness Capabilities. At 0224 AM on Friday, September 19 it was determined that 25 of 79 of the public emergency sirens for Three Mile Island Unit 1 were inoperable due to loss of power due to Tropical Storm Isabel. Subsequently, it has been determined that 32 of 79 of the sirens are inoperable. The inoperable sirens are located throughout the five risk counties around TMI. The inoperability of the sirens around TMI impacts a large segment of the population.
Contingency actions have been established for the deficient sirens. Automatic route alerting, that is the coordinated use of vehicles that will make loudspeaker announcements throughout affected areas will be utilized if the need should arise prior to restoration of power to the inoperable sirens. Local power company line crews have been notified of the loss of power to the sirens and are working to restore power on a priority basis to the sirens. The licensee informed the affected counties/PEMA and the NRC Resident Inspector. |
| Where | |
|---|---|
Three Mile Island  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 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 | |
| Time - Person (Reporting Time:+-1.02 h-0.0425 days <br />-0.00607 weeks <br />-0.0014 months <br />) | |
| Opened: | John Schork 05:23 Sep 19, 2003 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Sep 19, 2003 |
| 40178 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (10 %) |
Three Mile Island with 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 | |
WEEKMONTHYEARENS 565602023-06-06T13:37:0006 June 2023 13:37:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to ON-SITE Fatality ENS 554552021-09-10T14:55:00010 September 2021 14:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 72.75(b)(2), Offsite Notification Offsite Notification Due to Contractor Fatality ENS 542832019-09-17T14:28:00017 September 2019 14:28:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release On-Site Non-Work Related Fatality ENS 533232018-04-11T09:42:00011 April 2018 09:42:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Hydrazine Spill ENS 529272017-08-25T15:15:00025 August 2017 15:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Exceeding Chlorine Effluent Limit ENS 520972016-07-18T20:00:00018 July 2016 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Communications Capability ENS 509322015-03-27T17:00:00027 March 2015 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitor Not Available for Emergency Plan Assessment ENS 506542014-12-04T16:50:0004 December 2014 16:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Emergency Siren Inadvertently Sounding ENS 488552013-03-27T12:00:00027 March 2013 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service for Maintenance ENS 487142013-02-05T13:00:0005 February 2013 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service ENS 486252012-12-26T09:10:00026 December 2012 09:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service ENS 483252012-09-20T18:16:00020 September 2012 18:16:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Trip Due to Reactor Protection System Actuation ENS 482212012-08-22T12:01:00022 August 2012 12:01:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to High Reactor Coolant System Pressure ENS 481322012-07-25T18:30:00025 July 2012 18:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Press Release Due to an Elevated Level of Tritium Detected on Site ENS 474192011-11-07T01:03:0007 November 2011 01:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Spds and Plant Process Computer Due to Planned Maintenance ENS 473902011-10-29T23:18:00029 October 2011 23:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Greater than 25% of Emergency Notification System Sirens Due to Weather Conditions ENS 470482011-07-14T17:19:00014 July 2011 17:19:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertant Siren Actuation ENS 470312011-07-06T18:40:0006 July 2011 18:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Hvac Out of Service Due to Loss of Power ENS 459292010-05-14T19:30:00014 May 2010 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Nonfunctional ENS 455142009-11-22T03:45:00022 November 2009 03:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Radiation Release in Containment Associated with Steam Generator Removal ENS 453592009-09-17T17:00:00017 September 2009 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Inoperable for Greater than Eight Hours ENS 452312009-07-27T14:00:00027 July 2009 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Hvac Found Degraded Due to Water Intrusion ENS 437722007-11-05T21:49:0005 November 2007 21:49:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds Out of Service for Planned Maintenance ENS 437602007-10-31T03:30:00031 October 2007 03:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Outage of Safety Parameter Display System (Spds) and Emergency Response Data ENS 429572006-11-02T18:34:0002 November 2006 18:34:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Turbine Trip/ Reactor Trip Due to Invalid Low Condenser Vacuum Signal ENS 424132006-03-13T16:10:00013 March 2006 16:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Fan Inoperable ENS 402442003-10-13T15:20:00013 October 2003 15:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Osha at Three Mile Island Regarding a Fatality ENS 401782003-09-19T06:24:00019 September 2003 06:24:00 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 Emergency Siren Capability Due to Adverse Weather Conditions ENS 401212003-08-29T19:05:00029 August 2003 19:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Degradation of Emergency Preparedness Response Capabilities 2023-06-06T13:37:00 | |
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