Dynamics and stability analysis of DFT using U-Pu and Tru fuel salts

The Dual Fluid Reactor is a molten salt fast reactor developed by IFK (Institut fuer Festkoerper-Kernphysik) based on the Gen-IV Molten-Salt Reactor (MSR) and the Liquid-Metal Cooled Reactor (SFR, LFR) concepts. This analysis report focuses on the comparison between previous coupled calculations of the system with the default fuel salt of U-Pu mixture and new one with a transuranium (TRU) fuel salt option. An approach to the dynamics and stability analysis of the DFR by using the welldeveloped linear method with their improved modifications is proposed. The coupled one-dimensional neutronics and thermal-hydraulic model will be established with this method. With this model the steady state and the dynamics analysis of the system under various operational conditions are presented. The stability of the system will be also analyzed with the results in the parametric studies. The results are compared with Molten Salt Breeder Reactor (MSBR) and Molten Salt Fast Reactor (MSFR), which can be decisive for the future application of the DFR.