Best-Estimate Plus Uncertainty (BEPU) approach for accident analysis

F. D'Auria    University of Pisa, Pisa, Italy


The Best Estimate Plus Uncertainty (BEPU) constitutes an approach or a procedure aimed at making feasible the application of nuclear thermal hydraulics to the licensing and the safety evaluation processes of Nuclear Power Plants (NPPs). The features of BEPU are such to make attractive the application to address any design and operational issue in NPP technology. The triggering idea for BEPU came from the adoption of Best Estimate system thermal hydraulics codes for accident analysis in NPP technology. Key features of BEPU can be summarized as: procedures for nodalization development, code and nodalization validation, ...

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