Methodical Aspects of Creation and Calculation of the Space Kinetics Benchmarks

The problems arising at creation and calculation of the space kinetics benchmarks are considered by three tasks. The connection between the nonstationary diffusion equation and the inverse solution of the kinetics equation (ISKE) is considered with the different methods of preparation and presentation of kinetic parameters. The following benchmarks are considered: the nondiffusion Small LWR benchmark from the series of Takeda’s tasks, complemented by modeling the motion of control rods; Ferguson’s benchmark, enlarged by calculation of the reactivity change with ISKE; TWIGL benchmark—2D LWR model with insertion of positive reactivity.