Common Risk Target for severe accidents of nuclear power plants based on IAEA INES scale

In the proposed Risk Target concept an innovative original idea is used to join PSA L2 analyses with IAEA INES scale expressed in I131 equivalent transformed to consequences. The INES scale became the basis for further considerations as it is currently used for evaluation of degree of severity of real accidents. Since PSA deals with potential accidents which might become real with some probability (therefore PSAs are performed indeed), the INES scale seems to be a good tool - commonly and widely accepted for real accidents - to evaluate the degree of severity of potential accidents and thus to be used for the risk limit/target definition for nuclear accidents.