Fuel cycle advantages and dynamics features of liquid fueled MSR

• Systematic overview of the MSR advantages and features from reactor physics point of view and from the safety point of view.
• Study of the iso-breeding closed Th-cycle parameters as a function of the fuel-to-moderator ratio for single-fluid MSR core.
• Analysis of the pump-driven and pump initiated transients in the moderated MSR.

Nuclear reactors operated with liquid fuel may have several remarkable advantages and features. The most developed reactor system in this category is the Molten Salt Reactor. It represents an old concept, but its properties are qualifying it for the advanced utilization: inherent safety, excellent neutron economy, continuous or batch reprocessing possibility without fuel fabrication. The focus has currently moved from the graphite moderated MSR studied in the past towards the fast MSR. The aim of this study is to characterize the MSR physics, highlighting its unique fuel cycle advantages using ERANOS-based EQL3D procedure and investigating its specific dynamics features by the dedicated DYN3D-MSR code.