Proposal of a BEPU-FSAR

The accident analysis performance consists of a fundamental part of the licensing of the Nuclear Power Plants (NPP). There are conservative and best estimated methods to perform this analysis. Although Best Estimated Plus Uncertainty (BEPU) is used for qualified computational tools and methods of the accident analysis, it can be used in other parts of the Final Safety Analysis Report (FSAR), which require Analytical Techniques (AT). The need for uncertainty quantification and harmonization of the approaches to use the computer codes is an important issue constituting the background to perform a BEPU-FSAR. The objective of this paper is to present the BEPU-FSAR concept and discuss how-to and why-to perform it.