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| Site | Start date | Title | Topic | |
|---|---|---|---|---|
| ENS 56410 | Yankee Rowe | 15 March 2023 00:00:00 | Loss of Response Capabilities | |
| ENS 56815 | Pilgrim | 6 July 2022 04:00:00 | Lost Sealed Sources | Moisture Density Gauge |
| ENS 55844 | Pilgrim | 15 April 2022 14:00:00 | Notification of Environmental Report to Another Government Agency | |
| ENS 55567 | Pilgrim | 9 November 2021 15:40:00 | Offsite Notification Due to Violation of Discharge Permit | |
| ENS 55202 | Pilgrim | 21 April 2021 11:52:00 | Offsite Notification to the Commonwealth of Massachusetts | |
| ENS 55071 | Pilgrim | 18 January 2021 21:00:00 | Offsite Notification Due to Leak from Underground Sewage Storage Tank | |
| ENS 54895 | Pilgrim | 10 September 2020 14:02:00 | Fitness for Duty (Ffd) Policy Violation | |
| ENS 54071 | Pilgrim | 18 May 2019 03:03:00 | Manual Reactor Scram Due to Degrading Condenser Vacuum | |
| ENS 53818 | Pilgrim | 8 January 2019 05:00:00 | Reactor Core Isolation Cooling Declared Inoperable | |
| ENS 53815 | Pilgrim | 5 January 2019 15:40:00 | En Revision Imported Date 2/12/2019 | Safe Shutdown Time of Discovery |
| ENS 53648 | Pilgrim | 5 October 2018 04:00:00 | Automatic Reactor Scram Due to Low Reactor Water Level | |
| ENS 53287 | Pilgrim | 25 March 2018 20:16:00 | Control Rod Drive Piping Potentially Inoperable | Time of Discovery Design basis earthquake |
| ENS 53259 | Pilgrim | 13 March 2018 14:00:00 | Off-Site Power Unavailable Due to Winter Storm | Safe Shutdown |
| ENS 53242 | Pilgrim | 3 March 2018 04:15:00 | Potential Loss of Offsite Response Capabilities | |
| ENS 53147 | Pilgrim | 4 January 2018 19:10:00 | Manual Reactor Scram Due to Partial Loss of Offsite Power During Winter Storm | |
| ENS 53041 | Pilgrim | 30 October 2017 06:47:00 | Severe Weather Causes Loss of Power to Support Buildings | |
| ENS 52820 | Pilgrim | 20 June 2017 18:44:00 | Secondary Containment Declared Inoperable Due to Both Airlock Doors Open Simultaneously | |
| ENS 52744 | Pilgrim | 10 May 2017 18:11:00 | Appendix J Local Leakage Exceeded Acceptance Criteria | Local Leak Rate Testing |
| ENS 52655 | Pilgrim | 31 March 2017 15:55:00 | Pressure Suppression Pool Declared Inoperable Due to Torus High Water Level | |
| ENS 52643 | Pilgrim | 27 March 2017 22:25:00 | Hpci Declared Inoperable Due to Inadvertent Isolation | |
| ENS 52492 | Pilgrim | 16 January 2017 16:55:00 | Failure of Reactor Building Isolation Dampers to Isolate | |
| ENS 52449 | Pilgrim | 20 December 2016 23:30:00 | Offsite Notification - Release of Hydrogen Gas in Excess of the Reportable Quantity of Ten Pounds | |
| ENS 52352 | Pilgrim | 7 November 2016 21:09:00 | Hpci Declared Inoperable Due to Failure of Ist Surveillance Test | |
| ENS 52231 | Pilgrim | 9 September 2016 21:39:00 | Offsite Notification - Release of Hydrogen Gas in Excess of the Reportable Quantity of Ten Pounds | |
| ENS 52223 | Pilgrim | 6 September 2016 12:27:00 | Manual Reactor Scram Due to High Reactor Water Level | |
| ENS 52181 | Pilgrim | 15 August 2016 19:52:00 | Salt Service Water System Declared Inoperable | |
| ENS 52056 | Pilgrim | 30 June 2016 18:30:00 | Both Primary Containment Isolation Valves for a Penetration Potentially Inoperable | |
| ENS 51924 | Pilgrim | 12 May 2016 20:47:00 | Deterioration of Spent Fuel Pool Rack Neutron Absorbing Material | Unanalyzed Condition |
| ENS 51862 | Pilgrim | 12 April 2016 04:50:00 | Loss of Both Emergency Diesel Generators | |
| ENS 51523 | Pilgrim | 9 November 2015 13:00:00 | Technical Support Center Unavailable Due to Planned Maintenance | |
| ENS 51456 | Pilgrim | 5 October 2015 21:25:00 | Safe Shutdown Analysis for Fire Event - Open Item with Potential to Impact Capability to Operate Motor Operated Valves | Hot Short Safe Shutdown Unanalyzed Condition Fire Watch |
| ENS 51338 | Pilgrim | 22 August 2015 20:28:00 | Reactor Scram Due to a Single Msiv Closure | |
| ENS 51301 | Pilgrim | 9 August 2015 20:27:00 | Salt Service Water System Declared Inoperable | |
| ENS 51279 | Pilgrim | 31 July 2015 14:42:00 | Fitness for Duty Report Involving a Supervisor | Fitness for Duty |
| ENS 51267 | Pilgrim | 27 July 2015 16:29:00 | Fitness for Duty Report Involving a Licensed Employee | Fitness for Duty |
| ENS 51087 | Pilgrim | 22 May 2015 14:02:00 | Manual Reactor Scram Due to Loss of Condenser Vacuum | |
| ENS 51174 | Pilgrim | 13 May 2015 04:00:00 | Voluntary Report - Information Only | |
| ENS 50790 | Pilgrim | 5 February 2015 18:00:00 | Loss of Sea Water Intake Bay Level Instrumentation Due to Loss of Instrument Air | |
| ENS 50771 | Pilgrim | 27 January 2015 14:48:00 | Loss of High Pressure Coolant Injection | |
| ENS 50769 | Pilgrim | 27 January 2015 09:02:00 | Automatic Reactor Scram on Turbine Trip Due to Loss of Offsite Power | |
| ENS 50356 | Pilgrim | 12 August 2014 06:38:00 | Hpci Potential Inoperability Discovered During Post Maintenance Testing | |
| ENS 50273 | Pilgrim | 11 July 2014 12:23:00 | Loss of Assessment Capability - Loss of Power to the Plant Process Computer | |
| ENS 50134 | Pilgrim | 23 May 2014 16:10:00 | Offsite Notification - Release of Hydrogen Gas in Excess of Reportable Quantity | |
| ENS 49905 | Pilgrim | 12 March 2014 17:15:00 | Loss of Communication - Federal Telephone System (Fts) | Health Physics Network |
| ENS 49605 | Pilgrim | 3 December 2013 18:30:00 | Loss of Emergency Communications Capability- Ep Conferencing Lines Unavailable | |
| ENS 49454 | Pilgrim | 19 October 2013 07:31:00 | Group 1 Isolation Due to High Reactor Water Level | |
| ENS 49296 | Pilgrim | 22 August 2013 11:55:00 | Reactor Protection Actuation (Scram) | |
| ENS 49201 | Pilgrim | 17 July 2013 14:54:00 | Salt Service Water System Declared Inoperable | |
| ENS 49196 | Pilgrim | 15 July 2013 20:52:00 | Salt Service Water System Declared Inoperable | |
| ENS 49189 | Pilgrim | 15 July 2013 04:29:00 | Unusual Event Declared Due to Loss of Control Room Annunciators |