Studies and Codes on Molten Salt Reactors

The renewed interest on MSR systems has stimulated the development of computational tools assigned for analysis and simulation of MSR systems. The code system is a tool developed at Forschungszentrum Rossendorf for the analysis of burn-up behavior and transient simulation of Molten Salt Reactors. The computing method is based on the coupling between the well-known Monte Carlo transport code MCNP-4C2 and the burn-up code ORIGEN 2.1. In the second part the contribution shows applications of the system DYN3D-MSR dynamics code for Molten Salt Reactors, which is based on FZR two groups diffusion code DYN3D designed for dynamics calculation of light water reactors.