Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Master List of L3PRA Project Public Reports (Drafts for Comment)

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 2: Background, Site and Plant Description, and Approach,” April 2022 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 3x: Overview of Reactor, At-Power, Level 1, 2, and 3 PRAs for Internal Events and Internal Floods,” April 2022 [Draft for Comment].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 3a, Part 1: Reactor, At-Power, Level 1 PRA for Internal Events – Main Report,” April 2022 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 3a, Part 2: Reactor, At-Power, Level 1 PRA for Internal Events – Appendices,” April 2022 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment (PRA) Project, Volume 3b: Reactor, At-Power, Level 1 PRA for Internal Flooding,” April 2022 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 3c: Reactor, At-Power, Level 2 PRA for Internal Events and Floods,” April 2022 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 3d: Reactor, At-Power, Level 3 PRA for Internal Events and Floods,” April 2022 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 4: Overview of Reactor, At-Power, Level 1, 2, and 3 PRAs for Internal Fires, Seismic Events, and High Winds,” August 2023 [Draft for Comment].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 4a: Reactor, At-Power, Level 1 PRA for Internal Fires,” August 2023 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 4b: Reactor, At-Power, Level 1 PRA for Seismic Events,” August 2023 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 4c: Reactor, At-Power, Level 1 PRA for High Winds and Other Hazards,” August 2023 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 4d: Reactor, At-Power, Level 2 PRA for Internal Fires, Seismic Events, and High Winds,” August 2023 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 4e: Level 3 PRA for Internal Fires, Seismic Events, and High Winds,” August 2023 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 5: Overview of Reactor, Low-Power and Shutdown, Level 1, 2, and 3 PRAs for Internal Events,” September 2025 [Draft for Comment].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 5a: Reactor, At-Shutdown, Level 1 PRA for Internal Events,” September 2025 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 5b: Reactor, At-Shutdown, Level 2 PRA for Internal Events,” September 2025 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 5c: Reactor, At-Shutdown, Level 3 PRA for Internal Events,” September 2025 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 6a: Spent Fuel Pool Level 1 and Level 2 PRA,” June 2025 [Draft for Public Comment].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 6b: Spent Fuel Pool Level 3 PRA,” June 2025 [Draft for Public Comment].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 7: Dry Cask Storage PRA,” July 2024 [Draft].

U.S. Nuclear Regulatory Commission, “U.S. NRC Level 3 Probabilistic Risk Assessment Project, Volume 8: Integrated Site Risk, All Hazards, Level 1, Level 2, and Level 3 PRA,” August 2025 [Draft for Public Comment].

Page Last Reviewed/Updated Thursday, September 25, 2025

Page Last Reviewed/Updated Thursday, September 25, 2025