ENS 43667
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ENS Event | |
|---|---|
18:55 Sep 26, 2007 | |
| Title | Technical Support Center and Operations Support Center Ventilation Inoperable |
| Event Description | At 1455 on September 26, 2007 investigatory surveillance testing identified that the emergency ventilation system designed to be manually initiated upon facility activation to maintain the Technical Support Center (TSC) and Operations Support Center (OSC) at positive pressure was not functioning properly. The emergency fan motor operated discharge dampers were not fully opening preventing the ability to achieve rated system flow and therefore design positive pressure. Maintenance is currently in progress to restore the degraded dampers/damper controls. Pilgrim is also investigating a temporary modification that would allow manual damper alignment to support achieving design positive pressure. Responsible Pilgrim Emergency Response Organization (ERO) personnel have been notified of this condition. The alternate technical and operations support facilities remain fully functional.
The licensee notified the NRC Resident Inspector. The licensee will notify the State of Massachusetts. |
| Where | |
|---|---|
| Pilgrim Massachusetts (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-0.85 h-0.0354 days <br />-0.00506 weeks <br />-0.00116 months <br />) | |
| Opened: | John Whaley 18:04 Sep 26, 2007 |
| NRC Officer: | Jason Kozal |
| Last Updated: | Sep 26, 2007 |
| 43667 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Pilgrim with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
WEEKMONTHYEARENS 532422018-03-03T04:15:0003 March 2018 04:15:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Potential Loss of Offsite Response Capabilities ENS 530412017-10-30T06:47:00030 October 2017 06:47:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Severe Weather Causes Loss of Power to Support Buildings ENS 515232015-11-09T13:00:0009 November 2015 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Unavailable Due to Planned Maintenance ENS 507902015-02-05T18:00:0005 February 2015 18:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Sea Water Intake Bay Level Instrumentation Due to Loss of Instrument Air ENS 502732014-07-11T12:23:00011 July 2014 12:23:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Loss of Power to the Plant Process Computer ENS 499052014-03-12T17:15:00012 March 2014 17:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication - Federal Telephone System (Fts) ENS 496052013-12-03T18:30:0003 December 2013 18:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Communications Capability- Ep Conferencing Lines Unavailable ENS 490132013-05-08T21:00:0008 May 2013 21:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Main Annunciator System Inoperable Due to Maintenance ENS 489972013-05-03T09:42:0003 May 2013 09:42:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Main Control Room Annunciators During Planned Spds Maintenance ENS 487432013-02-11T19:35:00011 February 2013 19:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Capability - Joint Information Center (Jic) Unavailable ENS 485742012-12-10T19:14:00010 December 2012 19:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Capability - Tsc/Osc Unavailable ENS 476152012-01-23T11:33:00023 January 2012 11:33:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Planned Maintenance ENS 462712010-09-23T10:00:00023 September 2010 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Capability - Tsc/Osc Is Unavailable ENS 458402010-04-14T21:03:00014 April 2010 21:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Organization In-Plant Notification System ENS 452192009-07-21T18:05:00021 July 2009 18:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Capability - Tsc/Osc Is Unavailable Due to Hvac System Trouble ENS 445092008-09-22T10:00:00022 September 2008 10:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center and Operational Support Center Unavailable ENS 436672007-09-26T18:55:00026 September 2007 18:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center and Operations Support Center Ventilation Inoperable ENS 404482004-01-14T15:00:00014 January 2004 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Inoperable/Degraded Due to Potential Amplifier Problems 2018-03-03T04:15:00 | |
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