2021 Annual Meeting
Mar 17 - Mar 19, 2021Online
2021 Annual Meeting
Mar 17 - Mar 19, 2021Online
[1A01]Estimation of the In-Depth Debris Status of Fukushima Unit-2 and Unit-3 with Multi-Physics Modeling(6)Overview and Preliminary Criticality Evaluation of the Unit-3 Pedestal Debris
*Akifumi Yamaji1, Kazuma Kishimoto1, Xin Li1, Masahiro Furuya1, Ikken Sato3, Hiroshi Madokoro3, Yuji Ohishi2(1. Waseda Univ., 2. Osaka Univ., 3. JAEA)
Keywords:
severe accident of a nuclear reactor,decommissioning of Fukushima reactors,MPS method,criticality evaluation,levitation method
In-depth pedestal debris status of the Fukushima Unit-2 and Unit-3 are being investigated through multi-physics modeling of thermal-hydraulics (particle method, and simulant experiment), criticality evaluation and high temperature melt property evaluations (levitaion technique). This presentation gives test evaluation of criticality of Unit-3 pedestal debris, based on debris distributions to be presented in series Number (7). The Fe-B heat capacity measurements will also be reported in presentation number (8).