ENS 44613
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ENS Event | |
|---|---|
04:20 Oct 30, 2008 | |
| Title | Emergency Response Data System (Erds) Out of Service |
| Event Description | This event is being reported in accordance with 10 CFR 50.72(b)(3)(xiii) as a condition that results in a major loss of emergency offsite communications capability. On October 30, 2008, at approximately 0020 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> EDT, 120 VAC non-essential electrical power was lost to the plant computer due to high temperature in the computer room (approximately 80 degrees F). This resulted in the Integrated Computer System (ICS), the Safety Parameter Display System (SPDS), and the automatic mode calculation of the Computer Aided Dose Assessment Program (CADAP) being out of service.
At 0028 hours3.240741e-4 days <br />0.00778 hours <br />4.62963e-5 weeks <br />1.0654e-5 months <br />, back-up computer room ventilation equipment was placed in service, and at 0040 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />, the electrical system high temperature shutdown was reset with the computer room temperature at 77 degrees F. At 0217 hours0.00251 days <br />0.0603 hours <br />3.587963e-4 weeks <br />8.25685e-5 months <br />, the computer room high temperature alarm was reset with the room at 72 degrees F. The 120 VAC electrical power was restored to the plant computer room at approximately 0245 hours0.00284 days <br />0.0681 hours <br />4.050926e-4 weeks <br />9.32225e-5 months <br />. The ICS, SPDS, and CADAP equipment functions are in process of restoration. Restoration is expected during dayshift hrs. on 10/30/08. A follow up to this notification will be made when ERDS is restored. The NRC Resident Inspector has been notified.
The ERDS system has been tested and restored to service. The NRC Resident Inspector has been notified. Notified R3DO(Kozak). |
| Where | |
|---|---|
Perry  Ohio (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+0.83 h0.0346 days <br />0.00494 weeks <br />0.00114 months <br />) | |
| Opened: | Anthony Jardine 05:10 Oct 30, 2008 |
| NRC Officer: | Vince Klco |
| Last Updated: | Oct 30, 2008 |
| 44613 - NRC Website | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 487082013-01-31T07:10:00031 January 2013 07:10:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Data System (Erds) ENS 486102012-12-20T12:51:00020 December 2012 12:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Out-Of-Service ENS 484492012-10-28T14:08:00028 October 2012 14:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Equipment Failure Affecting Spds and Erds ENS 484152012-10-17T12:00:00017 October 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Out of Service ENS 479132012-05-10T15:00:00010 May 2012 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System and Emergency Response Data System Out of Service ENS 469742011-06-20T13:45:00020 June 2011 13:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unplanned Power Outages Affect Emergency Response Systems ENS 463702010-10-28T11:59:00028 October 2010 11:59:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Oos ENS 458802010-04-29T12:30:00029 April 2010 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Integrated Computer System Outage Due to Scheduled Maintenance ENS 457682010-03-15T12:10:00015 March 2010 12:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Out of Service Due to Computer Failure ENS 455912009-12-25T20:40:00025 December 2009 20:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness ENS 449892009-04-14T11:43:00014 April 2009 11:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System and Erds Out of Service ENS 449452009-03-30T22:43:00030 March 2009 22:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Out of Service ENS 449052009-03-13T04:25:00013 March 2009 04:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Plant Computer for Scheduled Maintenance Taking Erds Oos ENS 448812009-02-27T10:00:00027 February 2009 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Out of Service ENS 448432009-02-10T13:10:00010 February 2009 13:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Computer Oos for Scheduled Maintenance Taking Erds Oos ENS 446222008-11-02T13:30:0002 November 2008 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Out of Service for Planned Maintenance ENS 446132008-10-30T04:20:00030 October 2008 04:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Out of Service ENS 444402008-08-26T12:14:00026 August 2008 12:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Erds and Spds Out of Service Due to Plant Computer Maintenance ENS 442792008-06-10T06:00:00010 June 2008 06:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Will Be Taken Out of Service 2013-01-31T07:10:00 | |
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