[3D01-07] Evaluation for Accident Reactor

[3D04] Dissolution behavior of stainless steel into Fe-Cr-Ni-B-C alloy

*Jiang Liu¹, Takehiro Sumita¹, Yoshinao Kobayashi¹ (1. Tokyo Institute of Technology)

Keywords:severe accident, fuel debris, dissolution, diffusion coefficient, stainless steel

To assess the access route to the fuel debris in nuclear power plant, corrosion condition of the structural stainless steel by the corium should be clarified. By immersion experiment, the dissolution behavior of boron and carbon into the stainless steel was estimated. Meanwhile, the influence of grain size on the dissolution behavior was indicated.