2019 Fall Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 501-2 Nuclear Fuel and the Irradiation Behavior

[3E10-15] Properties of Actual Fuel Debris

Fri. Sep 13, 2019 2:45 PM - 4:25 PM Room E (Common Education Bildg. 2F A23)

Chair:Masayoshi Uno(Univ. of Fukui)

3:45 PM - 4:00 PM

[3E14] Analysis of samples collected in PCV interior of Fukushima Daiichi NPP

(5)Consideration of generation mechanisms of uranium-containing particles

*Masato Mizokami1,4, Akihiro Suzuki2, Ikken Sato3,4, Masaki Kurata3,4, Kenichi Ito1,4, Shinya Mizokami1,4 (1. TEPCO HD, 2. NFD, 3. JAEA, 4. IRID)

Keywords:Fukushima Daiichi NPP accident, Uranium-containing particles, TEM-EDS

The uranium-containing particles, as observed in the sample obtained in the PCV interior of Fukushima Daiichi NPP have different structures and compositions from particle to particle. We attempted consider the generation mechanisms based on characterization of the particles. It is considered that some particles were generated from droplets of reactor core melt and others were formed through vapor-condensation.