BEMUSE Phase VI Report: Status Report on the Area, Classification of the Methods, Conclusions and Recommendations

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The Best-estimate Methods – Uncertainty and Sensitivity Evaluation (BEMUSE) programme, promoted by the Working Group on Analysis and Management of Accidents (WGAMA) and endorsed by the Committee on the Safety of Nuclear Installations (CSNI), represents an important step towards reliable application of high-quality best-estimate and uncertainty and sensitivity evaluation methods.

The programme was divided into two main steps, each consisting of three phases. The first step was to perform an uncertainty and sensitivity analysis related to the LOFT L2-5 test, and the second step was to perform the same analysis for a nuclear power plant (NPP) large break loss-of-coolant accident (LBLOCA). The programme started in January 2004.

This report on BEMUSE Phase VI summarises the main results from the previous phases of the BEMUSE programme, gives information about the applied methods and summarises conclusions and recommendations from the whole programme.