ENS 52291
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ENS Event | |
|---|---|
17:28 Oct 8, 2016 | |
| Title | Unusual Event Declared Due to Loss of Offsite Power |
| Event Description | Loss of all offsite power capability, Table S-5, to 6.9kV emergency buses 1A-SA and 1B-SB for greater than or equal to 15 minutes.
At 1328 EDT, while shutdown in Mode 4 (Hot Shutdown), Harris declared an Unusual Event due to a loss of offsite power. Following the loss of offsite power (LOOP), the Emergency Diesel Generators started and loaded onto their respective emergency buses. The reactor remains stable and shutdown in Mode 4. The licensee is currently investigating the cause of the LOOP and the emergency buses will continue to be powered by the EDGs until the licensee has determined the cause for the LOOP. Offsite power is currently available into the switchyard. The licensee notified the state government, the local government, and the NRC Resident Inspector. Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).
The cause [of the LOOP] is not known. Duke Energy Control Center has evaluated the grid and is comfortable with Harris connecting emergency buses back to the grid. Harris Plant is evaluating restoration. Faults were validated on the 115kV Cape Fear North and South supply lines into the Harris switchyard. This notification also addresses various valid actuations of safety systems, including the Emergency Diesel Generators, as well as, potential loss of Emergency Assessment Capabilities due to the LOOP impacting Emergency Planning equipment. The licensee notified the NRC Resident Inspector. Notified R2DO (Bonser), IRD (Grant), and NRR EO (King).
The cause of the LOOP has been determined to be a momentary electricity loss on the 115kV Cape Fear North and South supply lines into the Harris switchyard. This event notification also addresses the loss of safety function of the offsite power system which occurred as a result of grid perturbations. The licensee notified the NRC Resident Inspector. Notified R2DO (Bonser), IRD (Grant), and NRR EO (King).
Based on the grid being stable and the 115kV Cape Fear North and South lines being available, the licensee terminated the Unusual Event at 2049 EDT on 10/8/16. The licensee notified the NRC Resident Inspector. Notified R2DO (Bonser), IRD (Grant), and NRR EO (King). Notified DHS SWO, FEMA OPS Center, FEMA National Watch (email only), DHS NICC, Nuclear SSA (email only).
10 CFR 50.72(b)(2)(XI) - OFFSITE NOTIFICATION At approximately 1305 EDT on October 9, 2016, Duke Energy personnel notified the North Carolina Department of Environment and Natural Resources of a spill of untreated sanitary wastewater. During a significant rainfall event associated with Hurricane Matthew, wastewater was released from the overflow of a lift station that did not function as a result of a power outage. The untreated sanitary wastewater entered the plant's storm drain system. The release has been stopped and the lift station power is restored. An investigation is in progress to further determine the cause and additional corrective actions. There is no impact to public health and safety or the environment due to this incident. This event is reportable per 10 CFR 50.72(b)(2)(xi), an event related to protection of the environment for which a notification to other government agencies has been made. The NRC Resident Inspector has been notified. Notified R2DO (Bonser). |
| Where | |
|---|---|
Harris  North Carolina (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(3)(iv)(A), System Actuation 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+-3.08 h-0.128 days <br />-0.0183 weeks <br />-0.00422 months <br />) | |
| Opened: | Joel Duhon 14:23 Oct 8, 2016 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Oct 10, 2016 |
| 52291 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Shutdown (0 %) |
| After | Hot Shutdown (0 %) |
Harris with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
WEEKMONTHYEARENS 561902022-10-31T00:57:00031 October 2022 00:57:00
[Table view]10 CFR 50.72(b)(3)(iv)(A), System Actuation Specified System Actuation - Auxiliary Feedwater System Actuation ENS 561892022-10-30T10:53:00030 October 2022 10:53:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip and Auxiliary Feedwater System Actuation ENS 561862022-10-28T00:50:00028 October 2022 00:50:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Auxiliary Feedwater System Inoperable ENS 560752022-08-28T07:29:00028 August 2022 07:29:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip and Auxiliary Feedwater System Actuation ENS 558682022-04-29T08:05:00029 April 2022 08:05:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip and Auxiliary Feedwater System Actuation ENS 556742021-12-22T17:45:00022 December 2021 17:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Siren System ENS 552132021-04-25T16:00:00025 April 2021 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitoring System Out of Service for Planned Maintenance ENS 550402020-12-17T20:39:00017 December 2020 20:39:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Accumulator Discharge Valves Isolated with Plant Greater than 1000 Psig ENS 550172020-12-01T16:16:0001 December 2020 16:16:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Functionality ENS 547732020-07-10T13:00:00010 July 2020 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Common Emergency Operations Facility Maintenance ENS 546512020-04-08T13:45:0008 April 2020 13:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Support Center Functionality ENS 540082019-04-17T12:12:00017 April 2019 12:12:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Turbine Trip Solenoids Failure to Actuate ENS 534862018-07-03T04:00:0003 July 2018 04:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Turbine Trip Solenoid Failed to Actuate During Testing ENS 533662018-04-26T22:00:00026 April 2018 22:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 533182018-04-07T08:51:0007 April 2018 08:51:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Actuation of Auxiliary Feedwater System (Afw) ENS 524182016-12-08T18:30:0008 December 2016 18:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Failed Air Intake Fan ENS 523352016-10-26T15:42:00026 October 2016 15:42:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Containment Sump Suction Valve Opened During Containment Spray Pump Testing ENS 522912016-10-08T17:28:0008 October 2016 17:28:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unusual Event Declared Due to Loss of Offsite Power ENS 522892016-10-08T05:50:0008 October 2016 05:50:00 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)(2)(iv)(A), System Actuation - ECCS Discharge Unplanned Reactor Trip and Safety Injection Due to Turbine Control Valve Transient ENS 521922016-08-22T02:51:00022 August 2016 02:51:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Loss of Control Room Hvac ENS 521522016-08-04T15:00:0004 August 2016 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out-Of-Service ENS 520722016-07-07T16:10:0007 July 2016 16:10:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Accident Mitigation - Main Steam Safety Valves Not Adequately Protected from Tornado Missiles ENS 516252015-12-28T21:45:00028 December 2015 21:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Functionality of Technical Support Center Ventilation ENS 516012015-12-13T08:07:00013 December 2015 08:07:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Essential Services Chilled Water System Inoperable ENS 514722015-10-15T19:54:00015 October 2015 19:54:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Discovered Condition ENS 512122015-07-07T15:05:0007 July 2015 15:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service ENS 511782015-06-16T15:45:00016 June 2015 15:45:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition Due to Open High Energy Line Break Doors ENS 511462015-06-10T17:00:00010 June 2015 17:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Temporary Loss of Meteorological Data ENS 510112015-04-04T15:20:0004 April 2015 15:20:00 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Power Lost to Control Room Normal Outside Air Intake Dampers During Testing ENS 504432014-09-10T08:53:00010 September 2014 08:53:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Out of Service Due to Fire Alarm ENS 499942014-04-03T13:06:0003 April 2014 13:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Declared Nonfunctional ENS 497422014-01-18T15:16:00018 January 2014 15:16:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Alert Declared Due to Fire in 480V Bus ENS 497202014-01-13T15:22:00013 January 2014 15:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Facilities Out of Service Due to Planned Maintenance ENS 492702013-08-12T19:50:00012 August 2013 19:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Ventilation Out of Service Due to Discovered Condition ENS 492492013-08-08T07:05:0008 August 2013 07:05:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to a Switchgear Explosion That Supplies Safe Shutdown Equipment ENS 492282013-07-31T09:10:00031 July 2013 09:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Facility Preplanned Maintenance ENS 491502013-06-27T08:25:00027 June 2013 08:25:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Planned Maintenance ENS 490042013-05-06T14:16:0006 May 2013 14:16:00 Other Unspec Reqmnt, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness One of Two National Weather Service Tone Alert Radios Out of Service ENS 489282013-04-16T08:14:00016 April 2013 08:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center (Tsc) Unavailable Due to Preplanned Maintenance ENS 489152013-04-11T19:41:00011 April 2013 19:41:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Coolers Out of Service ENS 488402013-03-21T09:07:00021 March 2013 09:07:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitors Inoperable for Pre-Planned Maintenance ENS 488042013-03-04T09:15:0004 March 2013 09:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Inoperable for Pre-Planned Maintenance ENS 487792013-02-25T13:04:00025 February 2013 13:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Radiation Monitors Inoperable for Pre-Planned Maintenance ENS 486862013-01-21T18:00:00021 January 2013 18:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Response Capability - Technical Support Center Ah-17 Supply Fan Non-Functional for Preplanned Maintenance ENS 486842013-01-20T21:41:00020 January 2013 21:41:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Disabled ENS 486702013-01-14T13:40:00014 January 2013 13:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Radiation Monitors Inoperable for Pre-Planned Maintenance ENS 486112012-12-20T12:35:00020 December 2012 12:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Radiation Monitors Inoperable for Pre- Planned Maintenance ENS 485972012-12-15T12:34:00015 December 2012 12:34:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Cooling Fan Inoperable ENS 485882012-12-13T16:00:00013 December 2012 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitoring System Inoperable for Pre-Planned Maintenance ENS 485732012-12-10T12:30:00010 December 2012 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability- Radiation Monitors Inoperable for Pre-Planned Maintenance ENS 485632012-12-06T12:00:0006 December 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitor Inoperable for Pre-Planned Maintenance ENS 485592012-12-05T13:47:0005 December 2012 13:47:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Removed from Service for Maintenance ENS 485382012-11-27T14:00:00027 November 2012 14:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability- Radiation Monitor Inoperable Due to Database Error ENS 485362012-11-26T15:29:00026 November 2012 15:29:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability- Radiation Monitor Inoperable for Pre-Planned Maintenance ENS 485242012-11-20T09:34:00020 November 2012 09:34:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Radiation Monitor Declared Inoperable ENS 485072012-11-14T15:00:00014 November 2012 15:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Gross Failed Fuel Detector ENS 484402012-10-24T19:30:00024 October 2012 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Support System Non-Functional ENS 484082012-10-16T12:00:00016 October 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Technical Support Center (Tsc) Maintenance ENS 483992012-10-11T18:28:00011 October 2012 18:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Maintenance ENS 483812012-10-05T12:00:0005 October 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Facility Information System Due to Planned Modification ENS 483732012-10-04T12:02:0004 October 2012 12:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Repairs ENS 482502012-08-29T12:27:00029 August 2012 12:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability Due to Limited Range on Indicator ENS 481492012-08-01T16:12:0001 August 2012 16:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Inoperable Due to Non-Functional Ventilation Support System ENS 481272012-07-24T09:55:00024 July 2012 09:55:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service ENS 479852012-06-01T16:47:0001 June 2012 16:47:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to a Bomb Threat ENS 478942012-05-03T12:30:0003 May 2012 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Preplanned Maintenance on Tsc Ventilation System ENS 478572012-04-21T09:15:00021 April 2012 09:15:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material Main Steam Isolation Valves Fail to Shut ENS 478552012-04-19T21:24:00019 April 2012 21:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Tsc Ventilation Inoperable ENS 478432012-04-17T13:00:00017 April 2012 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Had Only One Power Source During Preplanned Maintenance ENS 478402012-04-16T13:32:00016 April 2012 13:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unavailability of Technical Support Center Radiation Monitor ENS 478382012-04-16T12:00:00016 April 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance on the Technical Support Center Normal Power Supply ENS 477752012-03-27T04:00:00027 March 2012 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Historical Unavailability of Emergency Operations Facility Ventilation Due to Maintenance ENS 477402012-03-14T12:00:00014 March 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Planned Maintenance ENS 477362012-03-13T12:00:00013 March 2012 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operations Facility Planned Maintenance ENS 477292012-03-09T19:00:0009 March 2012 19:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Failure of a Technical Support Center Air Handling Unit ENS 476552012-02-09T22:00:0009 February 2012 22:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Potential Degradation of Technical Support Center Habitability ENS 479732011-09-21T15:22:00021 September 2011 15:22:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation System Inoperable ENS 471932011-08-23T18:06:00023 August 2011 18:06:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of an Unusual Event Due to a Seismic Event ENS 471392011-08-10T11:30:00010 August 2011 11:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Out of Service Due to a Communication Problem ENS 463962010-11-05T05:04:0005 November 2010 05:04:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Valid Actuation of an Emergency Diesel Generator Following Inadvertent De-Energization of Safety Bus ENS 444232008-08-19T13:05:00019 August 2008 13:05:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Rod Control System Malfunctioned ENS 439842008-01-30T10:13:00030 January 2008 10:13:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of All 81 Offsite Sirens for Approximately 80 Minutes ENS 439062008-01-15T18:30:00015 January 2008 18:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Damaged Fiber Optic Cable Affected Communications ENS 438652007-12-24T16:00:00024 December 2007 16:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Telecommunications Capability Due to Damaged Fiber Optic Cable ENS 436762007-09-29T02:32:00029 September 2007 02:32:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to Loss of a Startup Transformer ENS 436172007-09-06T17:12:0006 September 2007 17:12:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication to Harnett County Due to Damaged Phone Lines ENS 429512006-10-31T11:10:00031 October 2006 11:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Emergency Sirens Inoperable ENS 429482006-10-30T12:21:00030 October 2006 12:21:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Offsite Emergency Sirens Inoperable ENS 428482006-09-19T14:00:00019 September 2006 14:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip Due to Generator Lockout Signal ENS 426312006-06-12T02:56:00012 June 2006 02:56:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of 20% of Offsite Emergency Sirens Due to Severe Weather ENS 416712005-05-06T08:15:0006 May 2005 08:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communication ENS 416542005-05-01T04:21:0001 May 2005 04:21:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Loss of Condensate Pump ENS 411792004-11-07T21:35:0007 November 2004 21:35:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation "a" Auxiliary Feedwater (Afw) Pump Manually Started Due to Decreasing Steam Generator Water Level. ENS 411292004-10-18T11:41:00018 October 2004 11:41:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unplanned Emergency Diesel Start ENS 407302004-05-06T16:52:0006 May 2004 16:52:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Trip and Actuation of Auxiliary Feedwater System ENS 401702003-09-18T18:33:00018 September 2003 18:33:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of More than 20% of Offsite Emergency Sirens ENS 400842003-08-17T19:51:00017 August 2003 19:51:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Trip Due to Loss of "a" Condensate Pump. 2022-08-28T07:29:00 | |
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