2024 Annual Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 505-3 Decommissioning Technology of Nuclear Facilities

[1A15-18] Decommissioning of the Accident Reactor

Tue. Mar 26, 2024 4:20 PM - 5:30 PM Room A (21Bildg.2F 21-203)

Chair:Norikazu Kinoshita(Shimizu)

4:50 PM - 5:05 PM

[1A17] Assessment of dust dispersion data for future safety analysis of Fukushima Daiichi fuel debris retrieval

(15) Simulations to evaluate the effects of casing shape and cutting conditions on the dust dispersion behavior

*Kenta Kato1, Kenta Inagaki1, Tadafumi Koyama1, Koichi Uozumi1, Taizo Kanai1, Kinya Nakamura1, Shun Kanagawa1, Takatoshi Hijikata1, Tetsuya Kato1, Daisuke Yamauchi2 (1. CRIEPI, 2. TEPCO HD)

Keywords:dust, dispersion behaivor, particle tracking method

We have developed a simulation method for the dust dispersion behavior on the basis of the particle tracking method, and confirmed that simulation results are in good agreement with experimental ones. The dispersion ratio of the dust from debris in Fukushima site depends on various parameters, e. g., measurement positions or cutting conditions. In this study, we calculated the dispersion ratio in the large and small casings and under the different cutting conditions to discuss effects of such parameters.

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