Bővebb ismertető
FOREWORD
Probabilistic safety assessment (PSA) is increasingly important in the safe design and operation of nuclear power plants. The activities of the International Atomic Energy Agency in this area are focused on facilitating the use of PSA by reviewing the techniques developed in Member States, assisting in the formulation of procedures and helping Member States to apply such procedures to enhance the safety of nuclear power plants.
In this context a set of publications is being prepared to establish a consistent framework for conducting a PSA and forms of documentation that would facilitate the review and utilization of the results. Since December 1986 several Advisory Group meetings, Technical Committee meetings and Consultants meetings have been convened by the IAEA in order to prepare the publications.
The lead publication for this set establishes the role of PSA and probabilistic safety criteria in nuclear power plant safety. Other publications present procedures for the conduct of PSA in nuclear power plants and recognized practices for specific areas of PSA, such as the analysis of common cause failures, human errors and external hazards and collection and analysis of reliability data.
The publications are intended to assist technical persons performing or managing PSAs. They often refer to the existing PSA literature, which should be consulted for more specific information on the modelling details. Therefore, only those technical areas deemed to be less well documented in the literature have been expanded upon. The publications do not prescribe particular methods but they describe the advantages and limitations of various methods and indicate the ones most widely used to date. However, they are not intended to discourage the use of new or alternative methods; in fact the advancement of all methods that achieve the objectives of PSA is encouraged.
The IAEA wishes to convey its thanks to all those who participated in the drafting and review of the publication, in particular I. A. Papazoglou of the National Centre for Scientific Research Demokritos of Greece, who was the principal contributor.