ENS 45683
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ENS Event | |
|---|---|
14:28 Feb 6, 2010 | |
| Title | Loss of Emergency Siren Capability Due to Adverse Weather Conditions |
| Event Description | At 0928 hours0.0107 days <br />0.258 hours <br />0.00153 weeks <br />3.53104e-4 months <br /> on February 6, 2010, 38 of 119 offsite sirens were determined to be unavailable primarily due to power outages from heavy snowfall. As of 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />, 27 of 119 offsite sirens remained unavailable. Furthermore, 4 of the available sirens are currently on back-up battery power and are being monitored. Sirens will be recovered when power is restored.
This event is being reported as a Loss of Emergency Preparedness Capabilities pursuant to 10CFR50.72(b)(3)(xiii). Beaver Valley Power Stations Units 1 and 2 are operating at 100% power with required safety related equipment operable and no other equipment problems due to the adverse weather. The NRC Resident Inspector has been notified. Per the licensee, the applicable county Emergency Management Agencies are aware of this situation and are prepared to implement alternate notification measures if needed.
As of 0800 EST, power to 14 offsite sirens have been restored. 13 of 119 offsite sirens remained unavailable. The licensee will notify the NRC Resident Inspector. Notified the R1DO (Jackson). |
| Where | |
|---|---|
Beaver Valley  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-1.2 h-0.05 days <br />-0.00714 weeks <br />-0.00164 months <br />) | |
| Opened: | Jim Daugherty 13:16 Feb 6, 2010 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Feb 7, 2010 |
| 45683 - NRC Website | |
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 539242019-03-11T12:51:00011 March 2019 12:51:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Communication System Maintenance ENS 510642015-05-11T20:29:00011 May 2015 20:29:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Digital Radiation Monitoring System ENS 508952015-03-14T21:08:00014 March 2015 21:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Failed ENS 506272014-11-19T14:43:00019 November 2014 14:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Eal Required Gaseous Waste Effluent Radiation Monitors Removed from Service for Planned Maintenance ENS 504172014-08-29T13:32:00029 August 2014 13:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Operating Intermittently ENS 497162014-01-11T21:05:00011 January 2014 21:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Communication Failure ENS 491582013-06-29T16:14:00029 June 2013 16:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Operating Intermittently ENS 475132011-12-05T14:45:0005 December 2011 14:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unavailability of Emergency Response Data System (Erds) for Scheduled Upgrade ENS 462322010-09-07T14:43:0007 September 2010 14:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant In-Process Computer Oos for Maintenance ENS 456832010-02-06T14:28:0006 February 2010 14:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Capability Due to Adverse Weather Conditions ENS 450232009-04-26T19:45:00026 April 2009 19:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Erds and Plant Computer Unavailable During Maintenance on Computer Room Cooling ENS 444872008-09-15T12:00:00015 September 2008 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens Due to Power Outages Caused by High Winds ENS 434582007-06-29T04:14:00029 June 2007 04:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitoring Information to Erds and Spds Will Be Unavailable During Planned Upgrade to the System. ENS 430302006-12-03T23:04:0003 December 2006 23:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Non-Functional Safety Parameter Display System ENS 428022006-08-25T14:30:00025 August 2006 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System and Safety Parameter Display System Will Be Unavailable 2019-03-11T12:51:00 | |
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