ASN/IRSN guide 28: Qualification of scientific computing tools used in the nuclear safety case – 1st barrier

Abstract

This paper briefly describes the general framework underlying the qualification of scientific computing tools used for the safety analyses of nuclear installations. This topic being of high importance, the French Safety Authority (ASN) issued a guide to specify recommendations and the requirements associated to the qualification of such tools. This guide covers the verification, validation, uncertainty quantification, scaling effects and validity range. Specific aspects to thermalhydraulics, including uncertainties, are discussed.