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| Start date | Site | Title | |
|---|---|---|---|
| ENS 55660 | 20 October 2021 13:05:00 | Browns Ferry | Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 55287 | 1 April 2021 18:02:00 | Browns Ferry | 60-Day Telephonic Notification of Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 54976 | 1 November 2020 10:34:00 | Cooper | Manual Reactor Trip Due to an Un-Isolable Leak on the Turbine High Pressure Fluid System |
| ENS 54697 | 9 March 2020 01:21:00 | Browns Ferry | Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 54332 | 20 August 2019 16:33:00 | Browns Ferry | 60-Day Optional Telephonic Notification of Invalid Specified System Actuation |
| ENS 54185 | 27 July 2019 23:29:00 | Perry | Automatic Reactor Scram Due to Main Turbine Trip |
| ENS 54341 | 29 December 2018 07:20:00 | Browns Ferry | Invalid Actuation of a Signal Affecting More than One System |
| ENS 53676 | 19 October 2018 05:00:00 | Duane Arnold | Automatic Reactor Trip Due to Feedwater Regulating Valve Failing Closed |
| ENS 53776 | 13 October 2018 05:00:00 | Cooper | 60-Day Optional Telephonic Notification of Invalid Specified System Actuation |
| ENS 53565 | 27 August 2018 04:00:00 | Nine Mile Point | En Revision Imported Date 8/29/2018 |
| ENS 53661 | 16 August 2018 05:00:00 | Browns Ferry | Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 53192 | 1 February 2018 16:57:00 | River Bend | Manual Reactor Scram |
| ENS 52950 | 6 September 2017 15:57:00 | Nine Mile Point | Automatic Reactor Scram on Low Reactor Vessel Water Level |
| ENS 53070 | 10 January 2017 09:00:00 | Browns Ferry | Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 50754 | 26 November 2014 20:27:00 | Browns Ferry | Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 50601 | 7 November 2014 13:47:00 | Perry | Automatic Reactor Scram Due to Loss of Feedwater |
| ENS 50551 | 20 October 2014 06:18:00 | Perry | Automatic Reactor Scram on Loss of Feedwater |
| ENS 50532 | 13 October 2014 23:35:00 | FitzPatrick | High Pressure Core Injection Degraded Accident Mitigation Capability |
| ENS 50658 | 7 October 2014 15:35:00 | Browns Ferry | Invalid Specified System Actuation |
| ENS 50565 | 27 August 2014 16:09:00 | Browns Ferry | Invalid Actuation of General Containment Isolation Signals |
| ENS 49942 | 21 January 2014 13:46:00 | Browns Ferry | 60 Day Optional Telephone Notification of an Invalid Primary Containment Isolation Signal |
| ENS 49077 | 9 April 2013 10:06:00 | Browns Ferry | 60 Day Report of an Invalid Primary Containment System Isolation Signal |
| ENS 48690 | 23 November 2012 10:35:00 | Browns Ferry | Primary Containment Isolation Actuation Signal During Surveillance |
| ENS 48487 | 7 November 2012 14:21:00 | Fermi | Manual Reactor Shutdown Due to Hydrogen In-Leakage to Stator Water Cooling System |
| ENS 48481 | 6 November 2012 05:06:00 | Nine Mile Point | High Pressure Coolant Injection Actuation Signal |
| ENS 48587 | 18 October 2012 05:01:00 | Browns Ferry | 60-Day Telephone Notification of an Invalid System Actuation |
| ENS 48568 | 9 October 2012 16:50:00 | Browns Ferry | 60-Day Telephonic Notification of an Invalid System Actuation |
| ENS 48505 | 17 September 2012 09:12:00 | Browns Ferry | 60-Day Optional Telephonic Notification of Invalid Actuation of Containment Isolation Signals |
| ENS 48006 | 11 April 2012 20:15:00 | Browns Ferry | Invalid System Actuation Resulting from Post Maintenance Testing |
| ENS 47679 | 20 February 2012 01:04:00 | Grand Gulf | Manual Reactor Scram During Shutdown Due to Lowering Reactor Vessel Water Level (Rvwl) |
| ENS 46881 | 27 March 2011 01:05:00 | Browns Ferry | 60-Day Telephonic Notification of Invalid Primary Containment Isolation Signal Due to Maintenance |
| ENS 46359 | 24 October 2010 20:41:00 | Fermi | Automatic Reactor Scram Due to a Turbine Trip Resulting from a Low Condenser Vacuum |
| ENS 45918 | 12 May 2010 03:18:00 | Perry | Manual Reactor Scram Due to Loss of Control Rod Drive Charging Water Header Pumps |
| ENS 45866 | 22 April 2010 14:51:00 | Susquehanna | Reactor Scram on Low Reactor Vessel Water Level During Feedwater Integrated Control System Testing |
| ENS 45789 | 25 March 2010 20:27:00 | Fermi | Automatic Reactor Shutdown Due to Main Turbine Trip |
| ENS 45489 | 11 November 2009 23:43:00 | Cooper | Manual Reactor Scram After a Turbine Hydraulic Fluid Leak |
| ENS 45425 | 11 October 2009 11:50:00 | Palo Verde | Reactor Water Level Indication Inoperable |
| ENS 45394 | 30 September 2009 15:09:00 | Fermi | Manual Reactor Shutdown Due to Hydrogen In-Leakage to Stator Water Cooling System |
| ENS 45391 | 30 September 2009 04:23:00 | Browns Ferry | Unit 2 Manually Scrammed After Trip of an Operating Condensate Pump and Rapidly Lowering Rvwl |
| ENS 45282 | 21 August 2009 14:52:00 | Browns Ferry | Logic for Common Accident Signal Is Flawed for Safe Shutdown Instruction |
| ENS 44942 | 28 March 2009 05:46:00 | Fermi | Reactor Scram Due to Mode Switch Being Placed in Shutdown Following High Vibration on Main Turbine #1 Bearing |
| ENS 44402 | 9 August 2008 07:04:00 | Cooper | Manual Reactor Scram Due to Failure of Reheat Stop Valve to Open During Turbine Valve Testing |
| ENS 43948 | 31 January 2008 20:44:00 | Fermi | Manual Reactor Scram in Response to Trip of Both Reactor Recirc Pumps |
| ENS 43784 | 15 November 2007 08:13:00 | Fermi | Reactor Scram - Initiation of Ari Caused by Level 2 Signal |
| ENS 43780 | 13 November 2007 11:32:00 | Three Mile Island | Unusual Event Declared Due to Unexpected Reactor Vessel Water Level Change During a Refueling Outage with Irradiated Fuel in the Core |
| ENS 43610 | 30 August 2007 19:13:00 | Vermont Yankee | Automatic Reactor Scram on Turbine Stop Valve Closure |
| ENS 43495 | 17 July 2007 09:22:00 | Oyster Creek | Automatic Reactor Scram on Low Reactor Vessel Water Level (Rvwl) |
| ENS 43315 | 24 April 2007 06:10:00 | Limerick | Automatic Reactor Scram with Eccs Injection on Lowering Reactor Vessel Water Level |
| ENS 43271 | 2 April 2007 16:25:00 | Duane Arnold | Manual Reactor Scram Due to Lowering Reactor Vessel Water Level |
| ENS 43333 | 3 March 2007 13:14:00 | LaSalle | Invalid Eccs Actuation During Refueling Outage |