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燃料デブリの性状把握(27'A),7; TOLBIAC-ICBによる福島第一原子力発電所1号機のMCCIシミュレーション

Characterization of fuel debris (27'A), 7; MCCI simulation on Fukushima Daiichi NPP with TOLBIAC-ICB

北垣 徹 ; 矢野 公彦 ; 鷲谷 忠博 ; Haquet, J.-F.*; Boulin, A.*; Piluso, P.*

Kitagaki, Toru; Yano, Kimihiko; Washiya, Tadahiro; Haquet, J.-F.*; Boulin, A.*; Piluso, P.*

Simulation of the MCCI phenomenon in a sump pit at Fukushima Daiichi NPP unit 1 was performed using the TOLBIAC-ICB. As the results, the concrete ablation rate on the bottom wall after 36 hours into the MCCI was estimated to become stable. Main components of the molten pool could be low-density and Fe, and those of the crust be dense oxides.

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