2020 Fall Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 503-1 Reactor Chemistry, Radiation Chemistry, Corrosion, Water Chemistry,Water Quality Control

[2F03-06] Behavior of FP and Fuel Debris

Thu. Sep 17, 2020 3:30 PM - 4:45 PM Room F (Zoom room 6)

Chair:Makoto Nagase(HGNE)

4:00 PM - 4:15 PM

[2F05] Evaluation of FP behavior models in Severe Accidents

1. Evaluation of effect of nucleation on deposition of FP aerosols in a primary system by the Phebus-FPT1 test analysis

*Hidetoshi Karasawa1, Shuhei Miwa1, Chiaki Kino2 (1. JAEA, 2. IAE)

Keywords:severe accident, FP behavior model, aerosol, nucleation, coagulation, deposition

Oversaturated vapors released in a core in SAs change to monomers which produce clusters due to homogeneous or heterogeneous nucleation. In a primary system, clusters coagulate each other to grow particle sizes. Effects of the nucleation and coagulation on deposition of FP aerosols in the primary system were examined by the Phebus FPT1 analysis using the SAMPSON code.