2023 Annual Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 505-1  Radioactive Waste Management

[2G13-17] Stabilization and Immobilization 2

Tue. Mar 14, 2023 4:05 PM - 5:25 PM Room G (13 Bildg.1F 1311)

Chair:Makoto Arisaka(JAEA)

4:35 PM - 4:50 PM

[2G15] Challenge of Novel Hybrid-waste-solidification of Mobile Nuclei Generated in Fukushima Nuclear Power Station and Establishment of Rational Disposal Concept and its Safety Assessment

(8) Development of rapid fabrication of synroc based waste-solidification using the Spark Plasma Sintering(SPS) method

*Satofumi MARUYAMA1, Satoshi NOMURA1, Ryosuke MAKI2, Masahiko NAKASE3, Shinta WATANABE3, Hidetoshi KIKUNAGA4, Miki HARIGAI5, Tomofumi SAKURAGI5, Ryo HAMADA5, Hidekazu ASANO5 (1. TCU, 2. OUS, 3. Tokyo Tech, 4. Tohoku Univ., 5. RWMC)

Keywords:Fukushima Daiichi nuclear power station accident , Waste management , Hybrid waste form, Synroc, Spark plasma sintering

This study focused on the Spark plasma sintering (SPS) method as the rapid and low-temperature solidification method for fabricating synroc-based waste-solidification. The SPS method directly applies the electrical field to materials with uniaxial pressure. The reaction behavior differs from the conventional synthesis in an electric furnace. Especially, the solidification and densification temperatures are significantly decreasing. In this study, we applied the SPS method to fabricate titanates, one of the synrocs, and investigated the solidification behavior during SPS.