ENS 47995
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ENS Event | |
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10:02 Jun 5, 2012 | |
Title | Technical Support Center Filter Train Inoperable |
Event Description | At approximately 5:02 a.m. CDT on June 5, 2012, during scheduled test of the Technical Support Center (TSC) ventilation system, it was determined that the system would not function in the emergency mode. The plant is currently in cold shutdown for a maintenance outage.
The activity was terminated and the TSC ventilation system was restored to its normal configuration. This failure caused the TSC to be potentially uninhabitable, and thus it could not have been relied upon for the purposes of the site Emergency Plan. Repairs and retest of the system were successfully completed at approximately 11:30 a.m. CDT. This condition is being reported in accordance with 10CFR50.72(b)(3)(xiii) as an event that resulted in a major loss of emergency assessment capability. The NRC Resident Inspector has been notified. The suction damper to the filter train failed to open which led the licensee to declare the filter train inoperable. |
Where | |
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River Bend Louisiana (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+3.58 h0.149 days <br />0.0213 weeks <br />0.0049 months <br />) | |
Opened: | Steve Bibb 13:37 Jun 5, 2012 |
NRC Officer: | Howie Crouch |
Last Updated: | Jun 5, 2012 |
47995 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Not Critical |
Scram | No |
Before | Cold Shutdown (0 %) |
After | Cold Shutdown (0 %) |
WEEKMONTHYEARENS 491222013-06-16T09:56:00016 June 2013 09:56:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Broken Damper Blade Linkage Found on Technical Support Center Ventilation Line ENS 485552012-12-04T15:42:0004 December 2012 15:42:00 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 Licensee No Longer Has Control of Emergency Sirens ENS 479952012-06-05T10:02:0005 June 2012 10:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Filter Train Inoperable ENS 479602012-05-24T18:48:00024 May 2012 18:48:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Manual Reactor Scram Due to a Loss of Feed as Result of a Loss of Switchgear ENS 458362010-04-13T10:01:00013 April 2010 10:01:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service ENS 440132008-02-28T18:38:00028 February 2008 18:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness "Planned Maintenance on Safety Parameter Display System (Spds) and Emergency Response Data System (Erds) ENS 439522008-02-01T19:45:0001 February 2008 19:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Scheduled Loss of All Main Control Room Annunciators to Support Plant Maintenance ENS 439112008-01-17T15:17:00017 January 2008 15:17:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Control Room Annunciators Removed from Service for Planned Maintenance ENS 439042008-01-14T22:10:00014 January 2008 22:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Loss of Main Control Room Annunciator System ENS 439012008-01-13T16:36:00013 January 2008 16:36:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capabilities Due to Planned Maintenance Activities 2013-06-16T09:56:00 | |
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