Integrated
Risk Assessment of NPPs.
A. Gazsó, P. Hofer, F. Schinner, I. Andreev, and W. Kromp,
Institute of Risk Research, University of Vienna, Türkenschanzstrasse 17/8, A-1180
Vienna, Austria; and H. Kromp-Kolb, Institute of Meteorology and Physics,
University of Agriculture, Türkenschanzstrasse 18, A-1180 Vienna, Austria
Safety assessments of nuclear facilities, particularly of NPPs, which are commonly performed by international or national authorities such as the IAEA, domestic regulatory bodies or private consultant firms, are limited to consideration of technical or organisational structures and aspects of personnel training. This type of safety assessment by far does not cover all issues contributing to the facilities' overall risk. The problems which endanger safety exist on various levels of different nature, ranging from the simple failure of single parts up to complicated interactions between components and technical systems, from man-machine interactions up to the topographical and socio-political environment of the facility. Examples of risk-relevant problems of the different levels are presented. A more integrated approach to risk evaluation is suggested.
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