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| Site | Start date | Title | Topic | |
|---|---|---|---|---|
| ENS 56727 | Arkansas Nuclear | 7 September 2023 17:30:00 | Controlled Substance Found in Protected Area | |
| ENS 53456 | Arkansas Nuclear | 15 July 2023 10:39:00 | Pressure Boundary Leakage Identified While Shutdown | Pressure Boundary Leakage Pressure boundary leak |
| ENS 56351 | Arkansas Nuclear | 14 February 2023 17:03:00 | Automatic Reactor Trip Due to Two Reactor Coolant Pumps Tripping | |
| ENS 56140 | Arkansas Nuclear | 4 October 2022 12:40:00 | Fitness for Duty Report | Fitness for Duty |
| ENS 56136 | Arkansas Nuclear | 30 September 2022 19:45:00 | Fitness for Duty Report (FFD) | Fitness for Duty |
| ENS 55614 | Arkansas Nuclear | 29 November 2021 20:58:00 | Automatic Reactor Trip | |
| ENS 55506 | Arkansas Nuclear | 4 October 2021 19:33:00 | Degraded Condition Discovered on Reactor Vessel Head Penetration | Time of Discovery |
| ENS 55285 | Arkansas Nuclear | 31 May 2021 10:31:00 | Fitness for Duty Report | Fitness for Duty |
| ENS 55138 | Arkansas Nuclear | 14 March 2021 19:15:00 | Manual Trip Due to Loss Bus Voltage | |
| ENS 55028 | Arkansas Nuclear | 10 December 2020 22:08:00 | Automatic Reactor Scram Due to Low Steam Generator Water Level | |
| ENS 54954 | Arkansas Nuclear | 19 October 2020 04:13:00 | Control Room Envelope Inoperable | Mission time Temporary Modification |
| ENS 54339 | Arkansas Nuclear | 20 October 2019 15:30:00 | Control Room Envelope Breach | Loop seal |
| ENS 54312 | Arkansas Nuclear | 5 October 2019 13:50:00 | Individual Transported to Offsite Medical Due to Injury | |
| ENS 54152 | Arkansas Nuclear | 8 July 2019 14:35:00 | Fitness for Duty - Non-Licensed Contract Supervisor Failed Random Screening | Fitness for Duty |
| ENS 54108 | Arkansas Nuclear | 11 June 2019 13:20:00 | Fitness for Duty - Non-Licensed Employee Supervisor Test Confirmed Positive | Fitness for Duty |
| ENS 54091 | Arkansas Nuclear | 26 May 2019 10:12:00 | Automatic Reactor Trip Due to a Reactor Coolant Pump Trip on Ground Fault | |
| ENS 54073 | Arkansas Nuclear | 19 May 2019 23:09:00 | Loss of the Safety Parameter Display System Due to Inverter Failure | |
| ENS 54147 | Arkansas Nuclear | 9 May 2019 17:05:00 | 60-Day Telephonic Notification of Invalid Engineered Safety Feature Actuation Signal | |
| ENS 53793 | Arkansas Nuclear | 18 December 2018 06:00:00 | Automatic Reactor Trip - Loss of Non-Vital Bus | |
| ENS 53777 | Arkansas Nuclear | 9 October 2018 05:00:00 | 60-Day Optional Telephonic Notification of Invalid Specified System Actuation | |
| ENS 53459 | Arkansas Nuclear | 16 June 2018 05:00:00 | Manual Reactor Trip During Startup | |
| ENS 53404 | Arkansas Nuclear | 16 May 2018 22:50:00 | Automatic Reactor Trip Due to Loss of Main Feedwater Pump | |
| ENS 52710 | Arkansas Nuclear | 26 April 2017 15:04:00 | Unit 1 Automatic Reactor Scram Due to Partial Loss of Offsite Power | |
| ENS 52441 | Arkansas Nuclear | 16 December 2016 20:00:00 | Ventilation System Inoperable | |
| ENS 52271 | Arkansas Nuclear | 30 September 2016 02:00:00 | Unisolable Leak on Decay Heat Removal Piping Due to Weld Failure on a 1" Common Pipe | Time of Discovery |
| ENS 52267 | Arkansas Nuclear | 28 September 2016 12:45:00 | Unit 2 Shutdown Required by Technical Specifications Due to Inoperable Diesel Generator | |
| ENS 52242 | Arkansas Nuclear | 15 September 2016 14:08:00 | Potential Unanalyzed Condition Based on Identified Non-Conforming Conditions | Safe Shutdown Unanalyzed Condition Time of Discovery Tornado Missile Enforcement Discretion |
| ENS 52234 | Arkansas Nuclear | 11 September 2016 19:51:00 | Inadequate Design Protection of Safety-Related Equipment Identified During Tornado Missile Impact Evaluation | Unanalyzed Condition Time of Discovery Tornado Missile Enforcement Discretion |
| ENS 52195 | Arkansas Nuclear | 24 August 2016 13:41:00 | Unanalyzed Condition Associated with Damaging Effects of Tornados | Safe Shutdown Unanalyzed Condition Time of Discovery Tornado Missile Enforcement Discretion |
| ENS 51949 | Arkansas Nuclear | 23 May 2016 16:16:00 | Fitness-For-Duty Report Involving a Non-Licensed Employee Supervisor | |
| ENS 51891 | Arkansas Nuclear | 29 April 2016 11:15:00 | Offsite Notification of Onsite Chemical Spill | |
| ENS 51808 | Arkansas Nuclear | 19 March 2016 22:10:00 | Unanalyzed Condition That Could Challenge Rhr Equipment During Flood Conditions | Unanalyzed Condition |
| ENS 51785 | Arkansas Nuclear | 10 March 2016 14:40:00 | Seismic Alarm Function Not Available During Semi-Annual Seismic System Functional Test | Operating Basis Earthquake |
| ENS 51711 | Arkansas Nuclear | 4 February 2016 21:06:00 | Non Licensed Supervisor in Violation of the Fitness for Duty Policy | Fitness for Duty |
| ENS 51607 | Arkansas Nuclear | 15 December 2015 11:44:00 | Manual Reactor Trip Due to Loss of Feed to One Steam Generator | Downpower |
| ENS 51543 | Arkansas Nuclear | 17 November 2015 17:11:00 | Planned Maintenance on Seismic System Functional Test | Operating Basis Earthquake |
| ENS 51340 | Arkansas Nuclear | 24 August 2015 15:20:00 | Loss of Seismic Alarm Capability During Conduct of Functional Test | Earthquake |
| ENS 51184 | Arkansas Nuclear | 27 June 2015 02:49:00 | Seismic Monitor Declared Non Functional | Earthquake |
| ENS 51029 | Arkansas Nuclear | 1 May 2015 21:00:00 | Loss of Seismic Monitoring Due to Planned Maintenance | Earthquake |
| ENS 50739 | Arkansas Nuclear | 15 January 2015 21:45:00 | Offsite Notification Due to Hospitalized Injured Employee | |
| ENS 50641 | Arkansas Nuclear | 25 November 2014 18:11:00 | Deficiency in Methodology Used for Emergency Core Cooling System Performance Requirements | |
| ENS 50519 | Arkansas Nuclear | 8 October 2014 15:35:00 | Potential Fire Induced Cable Failure in Multiple Fire Zones | Safe Shutdown Unanalyzed Condition |
| ENS 50454 | Arkansas Nuclear | 12 September 2014 20:47:00 | Stored Fuel May Not Meet Fuel Specifications or Loading Conditions for Hi-Storm 100 Cask System | |
| ENS 50138 | Arkansas Nuclear | 24 May 2014 15:09:00 | Offsite Notification Due to Individual Requiring Assistance from Offsite Emergency Personnel | |
| ENS 50063 | Arkansas Nuclear | 28 April 2014 01:12:00 | Automatic Reactor Trip Due to an Auxiliary Trip on Core Protection Calculator | |
| ENS 49995 | Arkansas Nuclear | 3 April 2014 18:01:00 | Automatic Reactor Trip | |
| ENS 49873 | Arkansas Nuclear | 5 March 2014 16:20:00 | Discovery of Individual Pathways That Could Bypass Flood Barriers | |
| ENS 49618 | Arkansas Nuclear | 9 December 2013 14:00:00 | Unusual Event Declared Due to Unit 2 Auxiliary Transformer Explosion | |
| ENS 48955 | Arkansas Nuclear | 22 April 2013 21:23:00 | Emergency Operations Facility Not Available | |
| ENS 48869 | Arkansas Nuclear | 31 March 2013 15:33:00 | Notification of Unusual Event Declared Due to a Breaker Explosion in the Protected Area | Offsite Circuit Fatality |