Melting Penetration Simulation of Fe-U System at High Temperature Using MPS_LER

6th Asian Physics Symposium

Mustari, A.P.A.^1 ; Yamaji, A.^2 ; Irwanto, Dwi^1

Nuclear Physics and Biophysics, Faculty of Mathematics and Natural Sciences, Institut Teknologi, Bandung, Indonesia^1

Department of Advanced Science and Engineering /Cooperative Major in Nuclear Energy, Waseda University, 3-4-1, Ohkubo, Shinjuku-ku, Tokyo

169-8555, Japan^2

关键词: Binary phase diagrams;    Diffusion process;    High temperature;    Molten core;    Penetration rates;    Severe accident;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012016/pdf
DOI  :  10.1088/1742-6596/739/1/012016

来源: IOP

【 摘 要 】

Melting penetration information of Fe-U system is necessary for simulating the molten core behavior during severe accident in nuclear power plants. For Fe-U system, the information is mainly obtained from experiment, i.e. TREAT experiment. However, there is no reported data on SS304 at temperature above 1350°C. The MPS-LER has been developed and validated to simulate melting penetration on Fe-U system. The MPS-LER modelled the eutectic phenomenon by solving the diffusion process and by applying the binary phase diagram criteria. This study simulates the melting penetration of the system at higher temperature using MPS-LER. Simulations were conducted on SS304 at 1400, 1450 and 1500°C. The simulation results show rapid increase of melting penetration rate.