| ENS 54938 | 8 October 2020 16:25:00 | Notification of an Unusual Event | 10 CFR 50.72(a)(1)(i), Emergency Class Declaration |
| ENS 53997 | 12 April 2019 23:15:00 | En Revision Imported Date 5/28/2019 | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 52454 | 21 December 2016 15:35:00 | High Pressure Coolant Injection System Inoperable | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident |
| ENS 50915 | 21 March 2015 10:37:00 | High Pressure Coolant Injection Inoperable Due to Condensation in Steam Line | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident |
| ENS 50899 | 16 March 2015 23:20:00 | High Pressure Coolant Inject Declared Inoperable Following Scheduled Maintenance | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident |
| ENS 50806 | 10 February 2015 18:40:00 | Unanalyzed Condition in Station Blackout Implementation at Monticello | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 50663 | 10 December 2014 00:30:00 | High Energy Line Break Door Found Closed | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 50456 | 14 September 2014 07:26:00 | Operation in Unanalyzed Region of the Power to Flow Map | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 49363 | 19 September 2013 22:50:00 | High Pressure Coolant Injection Inoperable Due to Steam Leak | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident |
| ENS 49335 | 9 September 2013 19:00:00 | High Energy Line Break Barrier Improperly Obstructed | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 49316 | 1 September 2013 21:10:00 | Recirc Pump Runback and Power Reduction | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 49312 | 28 August 2013 02:52:00 | Recirc Pump Runback and Power Reduction | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 48809 | 6 March 2013 10:01:00 | Momentary Loss of Shutdown Cooling | 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat |
| ENS 48616 | 20 December 2012 22:00:00 | Unanalyzed Condition Due to an Identified Degraded Fire Barrier | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 48190 | 15 August 2012 01:45:00 | Safety System Overpressure Protection Failure Due to Closed Valves | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material |
| ENS 48072 | 5 July 2012 17:58:00 | Unanalyzed Condition Due to Blocking Both Reactor Building Railroad Bay Doors | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 46327 | 11 October 2010 18:05:00 | Technical Specification Does Not Account for Power Uprate | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 45424 | 10 October 2009 18:21:00 | Control Room Filtration Out of Service for Maintainance | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident |
| ENS 44957 | 2 April 2009 10:43:00 | Residual Heat Removal Inoperable | 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat |
| ENS 44723 | 15 December 2008 22:16:00 | Unanalyzed Condition Due to Steam Chase Temperature Greater than 165F | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 42013 | 25 September 2005 19:10:00 | Degradation in Fire Barrier Discovered During an Inspection | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 40481 | 26 January 2004 20:30:00 | Recirculation Fan Alteration Affects Accident Mitigation | 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident |
| ENS 40146 | 10 September 2003 22:46:00 | Unanalyzed Condition Due to a Potential Break in Fire Protection Water System | 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition |
| ENS 40008 | 22 July 2003 14:48:00 | Helb Door Not Latched as Required Due to Personnel Error | 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor |