Probabilistic Safety Assessment

Probabilistic safety assessment (PSA) has contributed significantly to the understanding of how best to ensure the safety of nuclear power plants. By means of PSA a nuclear power plant, including its safety systems and installations, can be analysed in its entirety. The rapid development of the method has resulted in its extensive use. This report reviews the general bases of PSA, emphasizing its merits and limits as well as the general lines ofthe future development of that methodology and its applications.