Usynina Svetlana G. Lead Design Engineer, Cand. Sci. (Engineering) Afrikantov OKBM, Joint-Stock Company usynina@okbm.nnov.ruAssessment of Design Approximation Impact on Neutronic Characteristics of a High-Temperature Gas-Cooled Reactor Fuel Assembly 3/18/2024 2024 - #01 Modelling processes at nuclear facilities Salyaev A.V. Usynina S.G. Kalinina V.P.