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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 53162 | 10 January 2018 15:28:00 | Browns Ferry | Automatic Reactor Scram Due to Turbine Control Valve Fast Closure Scram Signal |
| ENS 52803 | 17 April 2017 15:20:00 | Hatch | 60-Day Optional Telephonic Notification of Invalid Specified System Actuation |
| ENS 52648 | 29 March 2017 23:44:00 | Browns Ferry | Manual Scram Initiated During Startup |
| ENS 52057 | 30 June 2016 22:15:00 | Grand Gulf | Multiple Valid Specified System Actuations Due to Loss of Service Transformer 21 |
| ENS 52012 | 17 June 2016 07:57:00 | Grand Gulf | Automatic Reactor Scram During Testing |
| ENS 51182 | 26 June 2015 05:00:00 | Columbia | Two Reactor Vessel Level Channels Failed High |
| ENS 50704 | 25 December 2014 14:37:00 | River Bend | Automatic Reactor Scram |
| ENS 50774 | 6 December 2014 16:12:00 | River Bend | 60 Day Optional Report - Half Scram and a Division 2 Primary Containment Isolation Signal |
| ENS 50754 | 26 November 2014 20:27:00 | Browns Ferry | Invalid Actuation of a General Containment Isolation Signal Affecting More than One System |
| ENS 50112 | 19 March 2014 00:30:00 | Fermi | 60-Day Optional Telephonic Notification for an Invalid Actuation of Containment Isolation Valves |
| ENS 49868 | 4 March 2014 06:43:00 | Nine Mile Point | Unit 2 Manual Reactor Scram Following Loss of a Uninterruptible Power Supply (Ups) |
| ENS 49942 | 21 January 2014 13:46:00 | Browns Ferry | 60 Day Optional Telephone Notification of an Invalid Primary Containment Isolation Signal |
| ENS 49641 | 21 October 2013 09:19:00 | Hatch | 60 Optional Report - Invalid Partial Reactor Protection System Actuation |
| ENS 49460 | 23 August 2013 14:54:00 | Columbia | 60-Day Optional Telephonic Notification for an Invalid Primary Containment Isolation Valve Actuation |
| ENS 48676 | 16 January 2013 02:12:00 | FitzPatrick | Loss of a 4160 Volt Bus While Performing Testing |
| 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 48370 | 6 August 2012 01:25:00 | Hatch | Rps Sub-Component Failure Caused Half Scram with Group 2 Pciv Actuation |
| ENS 48139 | 31 May 2012 12:35:00 | Columbia | 60-Day Optional Telephonic Notification for an Invalid Primary Containment Isolation Valve Actuation |
| ENS 47955 | 24 May 2012 11:39:00 | Browns Ferry | Reactor Scram During Startup |
| ENS 47907 | 13 March 2012 20:04:00 | Peach Bottom | 60-Day Optional Report - Invalid Primary Containment Isolation System Actuation |
| ENS 47460 | 20 November 2011 05:12:00 | Monticello | Automatic Reactor Scram While Performing Turbine Bypass Valve Testing |
| ENS 46805 | 2 May 2011 11:26:00 | Browns Ferry | Specified System Actuation Due to a Emergency Diesel Generator Output Breaker Trip |
| ENS 46897 | 1 April 2011 04:28:00 | Columbia | 60-Day Telephonic Notification of Invalid Specified System Actuation |
| ENS 46844 | 20 March 2011 12:24:00 | River Bend | "a" Train Reactor Protection System Unexpectedly De-Energized Resulting in a Half Scram Signal |
| ENS 46656 | 3 January 2011 21:15:00 | Browns Ferry | 60 Day Telephone Notificaton Concerning Invalid Containment Isolation System Actuations |
| ENS 46325 | 11 October 2010 15:04:00 | Dresden | Automatic Reactor Scram During Transfer of Reactor Protection System Bus |
| ENS 46066 | 2 July 2010 17:32:00 | Browns Ferry | Invalid Primary Containment Isolation System Actuation from a Loss of Power to the Reactor Protection System (Rps) 3A |
| ENS 45726 | 25 February 2010 19:18:00 | Susquehanna | Invalid Actuation of Containment Isolation Valves |
| ENS 44674 | 14 October 2008 16:06:00 | FitzPatrick | Faulty Voltage Regulator Causes Half Scram |
| ENS 44546 | 7 October 2008 10:35:00 | FitzPatrick | Specified System Actuation Due to Loss of Power During Testing |
| ENS 44673 | 25 September 2008 07:41:00 | FitzPatrick | Loose Connection Causes Half Scram While Shutdown |
| ENS 44187 | 5 May 2008 08:32:00 | Browns Ferry | Loss of Power to Esf Buses During Transfer of Offsite Power Source |
| ENS 43850 | 22 October 2007 23:30:00 | Fermi | Invalid System Actuation |
| ENS 43332 | 12 April 2007 10:20:00 | FitzPatrick | Primary Containment Isolation Due to Loss of Rps Power Supply |
| ENS 42967 | 8 September 2006 23:28:00 | FitzPatrick | Half Scram Signal Due to Equipment Failure |
| ENS 41878 | 3 June 2005 21:05:00 | FitzPatrick | Half Scram on Voltage Regulator Failure |
| ENS 41590 | 19 February 2005 10:50:00 | Hatch | 60 Day Invalid Actuation of System Report. |
| ENS 41560 | 7 February 2005 13:56:00 | LaSalle | Invalid Specified System Actuation |
| ENS 40598 | 22 February 2004 15:16:00 | Perry | Partial Rps Actuation During Testing at Perry |
| ENS 40495 | 2 February 2004 04:34:00 | LaSalle | One Half Scram Signal Due to the Loss of the "B" Reactor Protection System Bus. |