ENS 45219
ENS Event | |
---|---|
18:05 Jul 21, 2009 | |
Title | Loss of Emergency Response Capability - Tsc/Osc Is Unavailable Due to Hvac System Trouble |
Event Description | Unavailability of TSC/OSC Heating, Ventilation and Air Conditioning (HVAC) System.
At 1405 hours0.0163 days <br />0.39 hours <br />0.00232 weeks <br />5.346025e-4 months <br /> on Wednesday, July 21, 2009, the Pilgrim Nuclear Power Station (PNPS) Technical Support Center (TSC) / Operations Support Center (OSC) HVAC system was discovered to be nonfunctional. During initial troubleshooting, the breaker providing power to the supply fan mechanically tripped and will not be reset until troubleshooting certifies the breaker is acceptable for use. This event occurred during scheduled preventative maintenance (PM) of the system. Under certain accident conditions, the TSC/OSC may become unavailable due to inability of the filtration system to maintain a habitable atmosphere. Compensatory measures exist to relocate TSC/OSC personnel to alternate locations. The licensee has notified the NRC Senior Resident Inspector/Resident Inspector. This notification is being made in accordance with 10CFR50.72(b)(3)(xiii) due to the loss of an emergency response facility. The licensee notified the Commonwealth of Massachusetts Emergency Management Agency.
This is a follow-up courtesy notification to EN#45219. All corrective maintenance activities on the TSC/OSC HVAC system are complete and the TSC/OSC is now functional and available for use. The NRC Resident has been notified. The licensee will inform the Commonwealth of Massachusetts Emergency Management Agency. Notified R1DO (Rogge). |
Where | |
---|---|
Pilgrim Massachusetts (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
Time - Person (Reporting Time:+-0.83 h-0.0346 days <br />-0.00494 weeks <br />-0.00114 months <br />) | |
Opened: | John Ohrenberger 17:15 Jul 21, 2009 |
NRC Officer: | Howie Crouch |
Last Updated: | Jul 23, 2009 |
45219 - NRC Website
Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 45219\u003C/a\u003E - \u003Ca href=\"/Pilgrim\" title=\"Pilgrim\"\u003EPilgrim\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELoss of Emergency Response Capability - Tsc/Osc Is Unavailable Due to Hvac System Trouble\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 45219 - Pilgrim\n","link":"","lat":41.942861111111114,"lon":-70.57673055555556,"icon":""}],"imageoverlays":null} | |
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 | |