Code-to-code comparison between TINTE and MGT for steady state scenario

Based on the scenarios defined in the OECD-NEA benchmark “PBMR Coupled Neutronics/Thermal Hydraulics Transient Benchmark of the PBMR-400 Core Design”, a code-to-code comparison was performed between the reactor dynamics program TINTE (Time Dependent Neutronics and Temperatures) using two neutron energy groups and the advanced code MGT (Multi Group TINTE) which is able to take into account up to 43 energy groups. The effect of an increasing number of energy groups on time- and space dependent safety-related parameters like the fuel and moderator temperature, the reactivity or the control rod worth has been studied. In a first step, calculations were carried out to compare the results obtained from MGT and TINTE using two energy groups. Afterwards the MGT two-group model was compared to a scenario using 43 energy groups. In addition, the benchmark was well suited to validate the new nuclear library of MGT now based on ENDF/B-VII.0 data.