ENS 49013
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ENS Event | |
|---|---|
21:00 May 8, 2013 | |
| Title | Main Annunciator System Inoperable Due to Maintenance |
| Event Description | On May 8, 2013 at 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> with the reactor in a Cold Shutdown condition and the Reactor Mode Select Switch in Refuel, the main control room annunciator system became inoperable during a preplanned activity to repair the associated 120VAC/125 VDC instrument power supply transfer switching scheme. The reactor cavity is flooded, the fuel pool gates are removed, shutdown cooling is in service and reactor vessel reassembly activities are in progress. The appropriate abnormal procedure was entered and compensatory actions including periodic monitoring of bus voltages and field annunciator panels were implemented for systems in service at the time of the loss. Station risk is green and all key safety functions are green. Troubleshooting is in progress however, return to service time has not been determined.
This notification is being made in accordance with 10 CFR 50.72(b)(3)(xiii). The USNRC Resident Inspector has been notified. This event has no impact on the health and safety of the public. |
| Where | |
|---|---|
| Pilgrim Massachusetts (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+3.85 h0.16 days <br />0.0229 weeks <br />0.00527 months <br />) | |
| Opened: | John Whalley 00:51 May 9, 2013 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | May 9, 2013 |
| 49013 - NRC Website
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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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