Severe Accident Risks

This report summarizes an assessment of the risks from severe accidents in five commercial nuclear power plants in the United States. These risks are measured in a number of ways, including: the estimated frequencies of core damage accidents from internally initiated accidents and externally initiated accidents for two of the plants;the performance of containment structures under severe accident loadings; the potential magnitude of radionuclide releases and offside consequences of such accidents; and the overall risk.