ENS 46204
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ENS Event | |
|---|---|
12:45 Aug 25, 2010 | |
| Title | Loss of Several Display Systems Due to Planned Computer Modifications |
| Event Description | At 0845 hours0.00978 days <br />0.235 hours <br />0.0014 weeks <br />3.215225e-4 months <br /> EDT, on August 25, 2010, the Emergency Response Facility Information System (ERFIS) computer system was removed from service to perform a planned modification of the ERFIS. This modification will remove obsolete software and hardware related to the Emergency Response Data System, which has been replaced by an upgraded system. The expected duration of ERFIS inoperability is approximately 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />. The ERFIS computer system provides monitoring and communications capability for plant data systems including the Emergency Response Data System (ERDS), Safety Parameter Display System (SPDS), Meteorological Data link system, and the Inadequate Core Cooling Monitor (ICCM). The loss of ERFIS requires alternate methods, as described in plant procedures, to be used for the above-described functions. Therefore, it is expected that appropriate assessment of plant conditions, notifications, and communications could still be made, if required, during the time that the ERFIS Computer system is inoperable. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii), which is any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability. As previously stated, alternate means remained available to assess plant conditions, make notifications, and accomplish required communications, as necessary. An additional message will be provided when the ERFIS is restored. It should also be noted that during the period of ERFIS inoperability, it is likely that the system could be restored within one hour to support Emergency Response Facility activation. This report is provided to conservatively cover the possibility that restoration within one hour may not be able to be accomplished if facility activation were to occur.
The NRC Resident Inspector has been notified.
At 1430, the ERFIS system was returned to service. The NRC Resident Inspector has been notified. Notified the R2DO(Franke) |
| Where | |
|---|---|
Robinson  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.97 h-0.165 days <br />-0.0236 weeks <br />-0.00544 months <br />) | |
| Opened: | Don Grant 08:47 Aug 25, 2010 |
| NRC Officer: | Pete Snyder |
| Last Updated: | Aug 25, 2010 |
| 46204 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 547682020-07-10T13:00:00010 July 2020 13:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Common Emergency Operations Facility Maintenance ENS 523322016-10-29T14:32:00029 October 2016 14:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) and Emergency Operations Facility (Eof) Ventilation System Out of Service ENS 485662012-12-07T14:20:0007 December 2012 14:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Emergency Offsite Facility/Technical Support Center Ventilation Maintenance ENS 485582012-12-05T05:31:0005 December 2012 05:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service for Planned Maintenance ENS 485082012-11-14T14:27:00014 November 2012 14:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Out of Service ENS 483542012-09-28T12:30:00028 September 2012 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Emergency Offsite Facility/Technical Support Center Ventilation Maintenance ENS 482882012-09-08T12:00:0008 September 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Offsite Facility/Technical Support Center Ventilation Maintenance ENS 481802012-08-11T11:30:00011 August 2012 11:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service for Scheduled Maintenance ENS 478282012-04-12T13:30:00012 April 2012 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc and Eof Out of Service Due to Maintenance ENS 476632012-02-14T17:40:00014 February 2012 17:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Facility Information System Due to Planned Modification ENS 475012011-12-06T14:00:0006 December 2011 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 468282011-05-07T12:27:0007 May 2011 12:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Data Systems Out of Service Due to Planned Modification ENS 462042010-08-25T12:45:00025 August 2010 12:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Several Display Systems Due to Planned Computer Modifications ENS 431342007-01-30T10:43:00030 January 2007 10:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Facility Information System ENS 431272007-01-27T14:05:00027 January 2007 14:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Erfis Removed from Service for Planned Modification ENS 430812007-01-06T15:00:0006 January 2007 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Spds Parameter Display Due to Planned Modification ENS 412952004-12-26T14:04:00026 December 2004 14:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications/Response Capability ENS 405342004-02-21T04:20:00021 February 2004 04:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Facility Information System Inoperable ENS 404772004-01-26T03:36:00026 January 2004 03:36:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Communications Due to Failed Uninterruptible Power Supply 2020-07-10T13:00:00 | |
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