The Russian approach to the regulatory review of computer programs used for multi-physics modelling and safety analysis of innovative nuclear installations

Safety analysis of innovative nuclear installations using modern computational computer programs, including those based on the multi-physics simulation and artificial intelligence (such as, artificial neural networks), requires not only the use of special approaches to verification, validation and uncertainty analysis of such computer programs, but also the established approaches to the review of such computer programs by the regulatory authorities. The paper contains a description of the Russian procedure for the review of computer programs used, for licensing calculations of innovative nuclear installations, contains information on current Russian requirements in the field of safety calculations, verification and validation of simulation models. It is also describes various methods for analyzing the uncertainties which are recommended for the design and beyond-design accidents simulation of nuclear power plants. (author)