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| Start date | Site | Title | |
|---|---|---|---|
| ENS 55421 | 20 August 2021 13:05:00 | Sequoyah | Auxiliary Building Gas Treatment Systems Inoperable |
| ENS 55036 | 14 December 2020 17:40:00 | Turkey Point | Charging Pump and Boration Flowpaths Simultaneously Inoperable |
| ENS 54075 | 20 May 2019 22:33:00 | Summer | Potential Missed Surveillance for Isfsi |
| ENS 53942 | 17 March 2019 12:35:00 | Browns Ferry | En Revision Imported Date 4/24/2019 |
| ENS 53750 | 21 November 2018 06:00:00 | Browns Ferry | En Revision Imported Date 12/31/2018 |
| ENS 52724 | 2 May 2017 21:00:00 | Fermi | Unanalyzed Condition for Combustion Turbine Generator Configuration |
| ENS 52638 | 20 March 2017 21:39:00 | Prairie Island | Historical Event Related to Past Operability |
| ENS 52214 | 31 August 2016 23:50:00 | Fermi | Unanalyzed Condition with a Potential Tornado |
| ENS 52202 | 25 August 2016 20:29:00 | Fermi | Mechanical Draft Cooling Tower Declared Inoperable |
| ENS 52187 | 17 August 2016 21:22:00 | Sequoyah | Unanalyzed Condition Due to Not Meeting Single Failure Criteria |
| ENS 51975 | 31 May 2016 05:00:00 | Abb, Inc. | Part 21 - Notification of Deviation of K-Line Circuit Breaker Secondary Trip Latch |
| ENS 51751 | 23 February 2016 23:00:00 | Comanche Peak | Unanalyzed Condition Involving Normally Open Battery Room Doors |
| ENS 50801 | 10 February 2015 08:50:00 | Prairie Island | Voids Identified That Result in an Unanalyzed Condition |
| ENS 50496 | 26 September 2014 03:00:00 | Monticello | Containment Isolation Declared Inoperable Due to Relay Age |
| ENS 50492 | 24 September 2014 20:33:00 | Prairie Island | Unit 1 Train B Rvlis and Iccm Inoperable Due to Data Errors |
| ENS 50334 | 1 August 2014 00:29:00 | Diablo Canyon | Unanalyzed Condition |
| ENS 49821 | 12 February 2014 12:11:00 | Susquehanna | Secondary Containment Boundry Door Found Ajar |
| ENS 48619 | 21 December 2012 15:00:00 | Prairie Island | Both Unit Two Auxiliary Feedwater Pumps Declared Inoperable |
| ENS 47288 | 22 September 2011 18:52:00 | Pilgrim | Salt Service Water Pump Inoperability During Postulated Degraded Voltage Conditions |
| ENS 46868 | 20 May 2011 23:00:00 | Braidwood | Unanalyzed Condition Marine Life Inside Afw Piping |
| ENS 45377 | 22 September 2009 18:29:00 | Arkansas Nuclear | Unanalyzed Condition Resulting from an Unlatched Door Serving as a High Energy Line Break Barrier |
| ENS 48724 | 28 July 2009 06:00:00 | Browns Ferry | Unanalyzed Condition That Could Have Resulted in an Increased Maximum Flood Level |
| ENS 43794 | 20 November 2007 11:30:00 | Pilgrim | High Pressure Coolant Inject Inoperable |
| ENS 43592 | 24 August 2007 16:30:00 | Prairie Island | Fire Barrier Separation Criteria Not Met for Afwp Rooms |
| ENS 43186 | 25 February 2007 18:00:00 | Palisades | Degraded Electrical Cables to Ccw System |
| ENS 42475 | 5 April 2006 12:04:00 | Three Mile Island | Both Trains of High Pressure Injection (Hpi) Declared Inoperable Due to Potential Air Binding of Pumps |