[2A09-11] Severe Accident 2

[2A11] The evaluation of the material distribution in the solidified metal after molten metal spreading

*Ryo Yokoyama¹, Shunichi Suzuki¹, Masahiro Kondo², Masaru Harada³, Koji Okamoto¹ (1. UTokyo, 2. AIST, 3. TEPCO)

Keywords:Severe accident, Corium spreading, Melting-Solidification, Stratification, Fuel debris

It is extremely important to know where U, Zr, SUS, etc. are distributed in the fuel debris when considering cutting jig selection, aerosol removal control during cutting, and recriticality control. In this study, a molten metal spreading experiment was carried out using two types of metals with different compositions to evaluate the distribution of the metal in the solidified metal.