NRC Requires Additional Earthquake Risk Analysis for Two Western U.S. Reactors

The Nuclear Regulatory Commission set a June 2017 deadline for two of three Western U.S. operating nuclear power plants to conduct in-depth analyses of their updated earthquake risk. The NRC is requiring Columbia (Benton County, Wash.) and Diablo Canyon (Avila Beach, Calif.) to submit their detailed risk analysis by June 30, 2017. The NRC continues to examine information from Palo Verde (Wintersburg, Ariz.); if the agency concludes the plant needs the in-depth risk analysis it must complete the work by Dec. 31, 2020. The agency established these due dates after reviewing updated earthquake hazard information from the plants.