ENS 49415
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ENS Event | |
|---|---|
15:27 Oct 7, 2013 | |
| Title | Planned Maintenance Causing Loss of Meteorological Tower Data |
| Event Description | A planned maintenance evolution at the Duane Arnold Energy Center (DAEC) will de-energize the Meteorological Data Tower. No other indications or annunciators will be unavailable during this maintenance to affect the plant's ability to assess or monitor an accident or transient in progress. National Weather Service data is expected to be available throughout the duration of the planned maintenance. A follow up notification will be provided when power to the Meteorological Data Tower has been restored.
The NRC Resident Inspector has been notified.
Maintenance activities on the Meteorological Data Tower is complete and the tower has been returned to service. The licensee has notified the NRC Resident Inspector. R3DO (Skokowski) notified. |
| Where | |
|---|---|
Duane Arnold  Iowa (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.72 h-0.155 days <br />-0.0221 weeks <br />-0.0051 months <br />) | |
| Opened: | Rob Spading 11:44 Oct 7, 2013 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Oct 7, 2013 |
| 49415 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 535002018-07-11T05:00:00011 July 2018 05:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Meteorological Data Unavailable ENS 507432015-01-19T03:31:00019 January 2015 03:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Normal Technical Support Center Power ENS 497472014-01-21T04:30:00021 January 2014 04:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Diesel Generator Out of Service ENS 495572013-11-19T10:20:00019 November 2013 10:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Backup Power Supply Maintenance ENS 494152013-10-07T15:27:0007 October 2013 15:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance Causing Loss of Meteorological Tower Data ENS 493832013-09-25T08:04:00025 September 2013 08:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Normal Tsc Power Due to Transformer Isolation ENS 493572013-09-19T09:50:00019 September 2013 09:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Diesel Generator Removed from Service for Planned Maintenance ENS 490922013-06-06T13:00:0006 June 2013 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Power Supply Removed from Service for Planned Maintenance ENS 486482013-01-03T15:30:0003 January 2013 15:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Erds Capability ENS 485102012-11-16T14:10:00016 November 2012 14:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds Out of Service Due to Planned Maintenance ENS 482962012-09-11T08:08:00011 September 2012 08:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Non-Functional Due to Planned Maintenance ENS 482142012-08-21T09:07:00021 August 2012 09:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service ENS 475572011-12-29T15:10:00029 December 2011 15:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on Plant Process Computer ENS 474902011-11-30T15:35:00030 November 2011 15:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer Out of Service Due to Planned Maintenance ENS 474312011-11-11T16:21:00011 November 2011 16:21:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Inoperable Due to Planned Maintenance ENS 473542011-10-19T15:00:00019 October 2011 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Diesel Non-Functional ENS 473502011-10-18T09:50:00018 October 2011 09:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Emergency Diesel Generator Out of Service ENS 472352011-09-01T15:50:0001 September 2011 15:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Diesel Generator Non-Functional ENS 471382011-08-10T06:00:00010 August 2011 06:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Potential Loss of Tsc Operability While Performing Planned Maintenance ENS 465422011-01-14T14:40:00014 January 2011 14:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Maintenance ENS 453402009-09-11T16:01:00011 September 2009 16:01:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable Due to Maintenance ENS 442912008-06-12T16:30:00012 June 2008 16:30:00 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 a Major Loss of Response and Communications Capability ENS 422992006-02-02T00:55:0002 February 2006 00:55:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Site External Communications ENS 422412006-01-04T17:00:0004 January 2006 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Emergency Sirens ENS 409952004-08-28T06:46:00028 August 2004 06:46:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failure of the Plant Process Computer Due to Loss of Power Supply 2018-07-11T05:00:00 | |
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