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| Start date | Site | Title | |
|---|---|---|---|
| ENS 56542 | 25 May 2023 04:00:00 | Fermi | Part 21 Interim Evaluation - Mechanical Draft Cooling Tower Fan Brakes Design Flaw |
| ENS 56429 | 23 March 2023 15:45:00 | Fermi | Design Flaw Discovered in Mechanical Draft Cooling Tower Fan Brakes |
| ENS 56200 | 27 October 2022 05:00:00 | Fairbanks Morse Engine | Part 21 Report - Fairbanks Morse Engine Emerency Diesel Generator Electronic Speed Control Module |
| ENS 55403 | 11 August 2021 10:34:00 | Fermi | HPCI Inoperability |
| ENS 54116 | 13 June 2019 01:27:00 | Brunswick | High Pressure Coolant Injection (Hpci) Inoperable |
| ENS 54095 | 29 May 2019 04:00:00 | Atc Nuclear | Part 21 Notification - Introl Positioners Potential Latent Defect |
| ENS 53353 | 20 April 2018 15:42:00 | Braidwood | Both Diesel Generators Inoperable |
| ENS 52289 | 8 October 2016 05:50:00 | Harris | Unplanned Reactor Trip and Safety Injection Due to Turbine Control Valve Transient |
| ENS 51244 | 21 July 2015 09:04:00 | Surry | Surry Unit 2 Trip During Reactor Startup |
| ENS 48053 | 28 June 2012 01:46:00 | Point Beach | Manual Reactor Trip Due to 100% Load Reject |
| ENS 46898 | 3 April 2011 21:44:00 | Palo Verde | 60-Day Optional Notification of Invalid Start of the 'A' Emergency Diesel Generator |
| ENS 46474 | 12 December 2010 16:28:00 | Limerick | High Pressure Coolant Injection System Unavailable |
| ENS 45647 | 21 January 2010 23:20:00 | Salem | Automatic Reactor Trip Due to Low Steam Generator Water Level |
| ENS 46060 | 1 July 2009 04:00:00 | Ge Hitachi Nuclear Energy | Part 21 Report Concerning Failure of Turbine Overspeed Reset Control Valve Diaphragm |
| ENS 43920 | 19 January 2008 16:52:00 | Hope Creek | 'A' and 'B' Recirculation Pump Motor Generator Overspeed Stops Found Set High (Non-Conservative) During Surveillance Testing |
| ENS 43866 | 26 December 2007 02:10:00 | North Anna | Automatic Reactor Trip Due to Trip of "B" Reactor Coolant Pump |
| ENS 42810 | 28 August 2006 17:00:00 | Vermont Yankee | High Pressure Coolant Injection Overspeed Trip Mechanism Failed to Reset |
| ENS 41844 | 14 July 2005 21:10:00 | LaSalle | Station Blackout Temperature Analysis Higher than Rcic Governor Documentation |
| ENS 41736 | 31 May 2005 14:31:00 | Limerick | Operation at Greater than Licensed Power Lever (106% Rated) Due to Recirc Pump Motor Generator Set Fault |
| ENS 40714 | 29 April 2004 02:30:00 | Brunswick | Hpci System Inoperable Following Planned Maintenance |
| ENS 40615 | 28 March 2004 03:05:00 | Vogtle | Manual Reactor Trip Due to Loss of Feedwater Pump Speed Control |
| ENS 40522 | 15 February 2004 21:19:00 | Callaway | Automatic Reactor Trip with Auxiliary Feedwater Actuation |
| ENS 40403 | 20 December 2003 14:49:00 | Saint Lucie | Rps Actuation Due to Loss of Turbine Generator Excitation |
| ENS 40358 | 27 November 2003 11:29:00 | Millstone | Plant Had a Manual Reactor Trip from 23% Power Due to Turbine Vibration |