ENS 46795
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ENS Event | |
|---|---|
23:00 Apr 27, 2011 | |
| Title | Emergency Sirens Intermittently Inoperable Due to Upgrading |
| Event Description | Fort Calhoun Station is improving (upgrading) the emergency siren system. This evening during the upgrade the sirens will be inoperable for a short period between 1830 and 2400 today. Fort Calhoun will inform the HOO when the sirens are returned to operation following this evenings maintenance.
The licensee notified the states of Nebraska and Iowa and local authorities in both states of the siren outage.
The emergency siren system maintenance was complete and all sirens were restored to service at 0010 CDT on 4/28/11. The licensee notified the states and local authorities. Notified R4DO (Powers).
Fort Calhoun Station is improving (upgrading) the emergency siren system. Today during the upgrade, the sirens will be inoperable for a short period between 1130 CDT and 1210 CDT today. Fort Calhoun will inform the HOO when the sirens are returned to operation following this maintenance. Notified R4DO (Powers), State and local government.
The emergency siren system maintenance was complete and all sirens were restored to service at 1150 CDT on 4/28/11. The licensee notified the states and local authorities.
Continuing maintenance on the sirens determined that they are not responding correctly. Troubleshooting is in progress. There is not an estimated time to return the sirens to service at this time. Emergency planning personnel have been contacted and contingency actions are in place. The station will contact the HOO when the issue is resolved. Notified R4DO (Powers).
The emergency siren system maintenance was complete and all sirens were restored to service at 1529 CDT on 4/28/11. The licensee notified the states and local authorities. Notified R4DO (Powers).
Fort Calhoun Station is improving (upgrading) the emergency siren system. Today during the upgrade, the sirens are anticipated to be inoperable for an hour or two during the period between 0755 [CDT] and 1000 [CDT] today. The emergency planning staff has been informed and compensatory measures are in place. Fort Calhoun will inform the HOO when the sirens are returned to operation following this maintenance. The licensee notified the states and local authorities, as well as the NRC Resident Inspector. Notified R4DO (Powers).
The emergency siren system maintenance was complete and all sirens were restored to service at 1030 CDT on 4/29/11. The licensee notified the states and local authorities. Notified R4DO (Powers). |
| Where | |
|---|---|
Fort Calhoun  Nebraska (NRC Region 4) | |
| 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:+-3.92 h-0.163 days <br />-0.0233 weeks <br />-0.00537 months <br />) | |
| Opened: | Erick Matzke 19:05 Apr 27, 2011 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Apr 29, 2011 |
| 46795 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
Fort Calhoun 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 556902022-01-05T15:09:0005 January 2022 15:09:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Onsite Fire ENS 555662021-11-08T16:15:0008 November 2021 16:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 553062021-06-15T17:30:00015 June 2021 17:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 549072020-09-23T20:28:00023 September 2020 20:28:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification - Press Release for a Fire in Containment ENS 538312019-01-16T06:00:00016 January 2019 06:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Fire Requiring Local Fire Department Response ENS 531252017-12-18T13:10:00018 December 2017 13:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Emergency Siren Activation During Testing ENS 509452015-04-01T19:40:0001 April 2015 19:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Operating Facility Electrical Power and Phone System ENS 490272013-05-13T15:10:00013 May 2013 15:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Sirens Due to Scheduled Upgrades ENS 489942013-05-03T10:20:0003 May 2013 10:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Outage of Ft. Calhoun Station Sirens for Planned Maintenance ENS 487052013-01-29T15:00:00029 January 2013 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Alert Notification System Sirens Will Be Disabled for Planned Maintenance ENS 486282012-12-27T20:45:00027 December 2012 20:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Scheduled Operations Support Center (Osc) Outage for Equipment Upgrade ENS 484852012-11-07T15:00:0007 November 2012 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Outage of Emergency Sirens ENS 483132012-09-17T13:58:00017 September 2012 13:58:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens ENS 481482012-08-01T15:10:0001 August 2012 15:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ens, Hpn, Pmc, and Rsc Phone Lines ENS 477742012-03-27T14:50:00027 March 2012 14:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Siren Actuation ENS 477212012-03-06T22:13:0006 March 2012 22:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens Due to Router Power Supply Failure ENS 476962012-02-24T04:00:00024 February 2012 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of 21 Out of 101 Emergency Sirens ENS 476942012-02-23T15:00:00023 February 2012 15:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to an Intake Structure Oil Spill ENS 472602011-09-13T13:22:00013 September 2011 13:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Ventilation ENS 472022011-08-26T17:36:00026 August 2011 17:36:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable for Emergency Response ENS 470672011-07-18T17:15:00018 July 2011 17:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of a Raw Sewage Discharge ENS 470332011-07-07T18:40:0007 July 2011 18:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to 10 Emergency Sirens ENS 470012011-06-30T19:23:00030 June 2011 19:23:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Person Being Evacuated ENS 469892011-06-26T15:45:00026 June 2011 15:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Petroleum Release to the Missouri River ENS 469532011-06-13T17:00:00013 June 2011 17:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Sewage System Release ENS 469292011-06-06T13:00:0006 June 2011 13:00:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unusual Event Declared Due to River Level ENS 468752011-05-24T03:00:00024 May 2011 03:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to an Oil Spill ENS 468452011-05-12T13:15:00012 May 2011 13:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 26.719, FFD Reporting requirements Contract Employee Admitted to Using Illegal Substance ENS 467952011-04-27T23:00:00027 April 2011 23:00:00 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 Emergency Sirens Intermittently Inoperable Due to Upgrading ENS 467422011-04-08T11:27:0008 April 2011 11:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Inoperable ENS 466422011-02-19T17:35:00019 February 2011 17:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility (Eof) Without Power ENS 464902010-12-19T06:08:00019 December 2010 06:08:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Quickly Concluded Notice of Unusual Event Due to a Loss of Communications ENS 463242010-10-11T16:10:00011 October 2010 16:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Oos for Maintenance ENS 462542010-09-15T22:40:00015 September 2010 22:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Both Containment Hydrogen Analyzers Out of Service Due to Failed Surveillances ENS 459242010-05-13T18:32:00013 May 2010 18:32:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 458492010-04-17T01:30:00017 April 2010 01:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Inoperable Due to Hvac Failure ENS 458222010-04-08T13:30:0008 April 2010 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Paging System Outage ENS 457312010-02-26T14:30:00026 February 2010 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness In-Plant Paging System Out of Service ENS 456152010-01-08T19:29:0008 January 2010 19:29:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens May Be Impacted by Extreme Weather Conditions ENS 456142010-01-07T19:00:0007 January 2010 19:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to the Discovery of Contaminated Dollar Bills ENS 454682009-10-26T15:50:00026 October 2009 15:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Station Paging System Out of Service ENS 453892009-09-29T20:09:00029 September 2009 20:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable for Emergency Planning Responses ENS 453152009-08-31T05:00:00031 August 2009 05:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Inoperable ENS 452512009-08-09T09:00:0009 August 2009 09:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release State of Nebraska Notified Due to Minor Sewage Spill to the Missouri River ENS 449032009-03-12T21:45:00012 March 2009 21:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification for Low Intake Water Level Due to an Ice Jam ENS 448332009-02-06T00:28:0006 February 2009 00:28:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Local Fire Departments for Assistance ENS 446552008-11-13T06:20:00013 November 2008 06:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Oil Spill from Circulating Water Pump Oil Sight Glass Line ENS 443232008-06-27T19:30:00027 June 2008 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Group Page Via Interactive Notification System Is Not Operational ENS 442072008-05-14T10:00:00014 May 2008 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Siren Outage for Upgrade ENS 440842008-03-20T13:13:00020 March 2008 13:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Traffic Accident Causes Loss of Power to Ten Emergency Sirens ENS 440362008-03-05T06:00:0005 March 2008 06:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Fifteen Emergency Sirens Inoperable for a Time ENS 439432008-01-30T09:35:00030 January 2008 09:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Multiple Emergency Sirens Lost Power Due to Severe Weather ENS 435752007-08-17T15:53:00017 August 2007 15:53:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Performed Due to External Environmental Event ENS 433552007-05-10T20:30:00010 May 2007 20:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Elevated Tritium Levels ENS 433472007-05-05T17:10:0005 May 2007 17:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made to the State of Nebraska Due to a Small Oil Spill ENS 431812007-02-22T12:57:00022 February 2007 12:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Inoperable ENS 428052006-08-26T14:45:00026 August 2006 14:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Electrician Flash Burned in Switchgear Room ENS 427812006-08-17T14:00:00017 August 2006 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Phone Lines Out of Service for Maintenance ENS 426082006-05-30T07:45:00030 May 2006 07:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to Inadvertent Emergency Siren Activation ENS 422322005-12-27T13:30:00027 December 2005 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Inoperable ENS 420062005-09-21T23:22:00021 September 2005 23:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Emergency Siren Capability in Harrison County Iowa Due to a Transformer Fire ENS 419162005-08-12T20:50:00012 August 2005 20:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to Emergency Siren Actuation ENS 410472004-09-17T11:24:00017 September 2004 11:24:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Army Corps of Engineers ENS 403512003-11-24T09:22:00024 November 2003 09:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Inability to Initiate Emergency Sirens from Emergency Operations Facility 2022-01-05T15:09:00 [Table view] | |
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