[1E10-15] Analysis of Fuel Debris and Decommissioning Technology

[1E12] Research and human resource development for analysis of fuel debris and decommissioning technology of Fukushima Daiichi nuclear power plants

(23) Mechanical properties of melt-solidified fuel debris simulants fabricated using eutectic reactions

*Takashi Onitsuka¹, Shintaro Yoshida¹, Masami Uno¹ (1. Univ. of Fukui)

Keywords:fuel debris, mechanical properties, microstructure

In this study, melt-solidified fuel debris simulants comprising UO₂, were fabricated using eutectic reactions. Reference samples were also prepared by sintering method. Uniaxial compression test were performed to evaluate the uniaxial compressive strength (UCS), and X-ray CT technique was used to obtain information on the pore structure. The results showed that the UCS decreased with increasing the porosity.