2020 Annual Meeting

Presentation information

Oral presentation

III. Fission Energy Engineering » 304-1 Thermal Hydraulics, Energy Conversion, Energy Transfer, Energy Storage

[1G06-10] Fukushima Daiichi Accident

Mon. Mar 16, 2020 2:45 PM - 4:00 PM Room G (Lecture Bildg. M 2F M-21)

Chair:Masahiko Machida(JAEA)

2:45 PM - 3:00 PM

[1G06] Estimation of the In-Depth Debris Status of Fukushima Unit-2 and Unit-3 with Multi-Physics Modeling

(1)Overview of the Project

*Akifumi Yamaji1, Masahiro Furuya1, Yuji Ohishi2, Ikken Sato3, Hirofumi Fukai1, Xin Li3, Hiroshi Madokoro3 (1. Waseda Univ., 2. Osaka Univ., 3. JAEA)

Keywords:severe accident of a nuclear reactor, decommissioning of Fukushima reactors, MPS method, levitation method, in-depth status evaluation of the fuel debris

Deepening understanding of the current status of the damaged Fukushima reactors is important for the safe and efficient decommissioning of the reactors. The presenting research team (Waseda Univ., Osaka Univ., JAEA) are carrying out multi-physics modeling with particle method, simulated small-scale experiment and acquisition of high temperature melt properties with levitation method to investigate in-depth status evaluation of the fuel debris in the pedestal region of Unit-2 and Unit-3. This presentation gives the overview and planning of the project.