2023 Fall Meeting

Presentation information

Oral presentation

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

[1F14-19] Fuel Debris 3

Wed. Sep 6, 2023 4:20 PM - 6:00 PM Room F (Okuma Machine Tool Eng. Bildg. 2F Lecture Room)

Chair:Tatsuya Suzuki(Nagaoka Univ. of Tech.)

4:35 PM - 4:50 PM

[1F15] Assessment of dust dispersion data for future safety analysis of Fukushima Daiichi fuel debris retrieval

(10) Characterization of once-molten kg-scale fuel debris simulants containing uranium

*Kinya Nakamura Nakamura1, Koichi Uozumi1, Tadafumi Koyama1, Taizo Kanai1, Shun Kanagawa1, Takatoshi Hijikata1, Tetsuya Kato1, Daisuke Yamauchi2, Kazutaka Mogi2, Yuichi Iwata2 (1. CRIEPI, 2. TEPCO)

Keywords:fuel debris, thermite reaction, induction heating, microstructure, debris characterization

To contribute to the safety evaluation of the fuel debris retrieval process at the Fukushima Daiichi Nuclear Power Station, kg-scale inhomogeneous uranium-containing fuel debris simulants, which is estimated to exist in the reactor pressure vessel, were manufactured using thermite reaction or induction heating methods. Both manufactured materials were analyzed to understand their characterization considering their impact on the dust dispersal behavior in the fuel debris retrieval process.

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