ENS 49122
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ENS Event | |
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09:56 Jun 16, 2013 | |
Title | Broken Damper Blade Linkage Found on Technical Support Center Ventilation Line |
Event Description | At 0456 CDT, while performing scheduled maintenance on HVL-AOD408, HVL-AHU1 Suction AOD [Air Operated Damper], the linkage inside the damper connecting the two damper blades was found to be broken. HVL-AHU1, Service Bldg. TSC A/C Unit, provides ventilation to the Technical Support Center. With the linkage on HVL-AOD408 broken, there is the potential that a filtered air supply cannot be provided to the TSC. As a result the TSC ventilation was placed in Emergency Mode and positive pressure could not be maintained. Investigation revealed, in addition to [the broken linkage on] HVL-AOD 408, a broken seal on bottom of door SB-123-19.
A contingency plan is in place to relocate personnel if needed per EIP-2-018, 'Technical Support Center' and EIP-2-016, 'Operations Support Center.' The licensee notified the NRC Resident Inspector. |
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:+3.6 h0.15 days <br />0.0214 weeks <br />0.00493 months <br />) | |
Opened: | Daniel Pipkin 13:32 Jun 16, 2013 |
NRC Officer: | Pete Snyder |
Last Updated: | Jun 16, 2013 |
49122 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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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