Decommissioning Timeline

Initial Key Milestones in Decommissioning Process

Key Milestones

June 7, 2013 SCE announces it will permanently retire San Onofre Units 2 and 3.
June 12, 2013 SCE notifies the NRC it has permanently ceased operation of Units 2 and 3.
July 2013 SCE transfers fuel from San Onofre Unit 2 reactor to the spent fuel pool, triggering a federal license change to an NRC possession license from an NRC operating license.
Sept. 26, 2013 NRC holds Public Meeting on Decommissioning Process.
Sept. 23, 2014 SCE files Post-Shutdown Decommissioning Activities Report (PSDAR)Decommissioning Cost Estimate and Irradiated Fuel Management Plan with the NRC.
Oct. 27, 2014 NRC conducts public meeting regarding PSDAR in Carlsbad, Calif.
Dec. 2014 SCE awards Independent Spent Fuel Storage Installation contract.
June 2015 NRC approves changes to San Onofre emergency planning requirements.
Oct. 2015 California Coastal Commission approves Independent Spent Fuel Storage Installation expansion.
Dec. 2016 SCE selects SONGS Decommissioning Solutions as decommissioning general contractor
Nov. 2017 SCE completes expansion of dry cask storage facility
Jan. 2018 SCE begins transferring spent nuclear fuel from wet to dry cask storage
March 2019 California State Lands Commission approves final Environmental Impact Report.
Oct. 2019 California Coastal Commission unanimously approves Coastal Development Permit, clearing the way for dismantlement and decontamination to proceed.
Jan. 2020 SCE issues Notice of Deconstruction to 12,000 residents living within a 5-mile radius of SONGS.
March 2020 California Department of Public Health - Radiologic Health Branch publishes data from the SONGS ISFSI radiation monitoring system for the first time.
July 2020 California Coastal Commission unanimously approves Inspection and Maintenance Program for the Holtec UMAX spent fuel storage system at SONGS.
August 2020 All spent nuclear fuel at San Onofre is placed in dry storage. The site switches to an "ISFSI-only" license that essentially means the nuclear focus is reduced to the spent fuel storage installation. The majority of San Onofre becomes an industrial deconstruction site, with critical functions, including oversight, focused on the safe dismantlement of plant structures.