2020 Fall Meeting

Presentation information

Oral presentation

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

[2E14-18] Evaluation of severe accident and Cs behavior

Thu. Sep 17, 2020 4:25 PM - 5:50 PM Room E (Zoom room 5)

Chair:Masayoshi Uno(Univ. of Fukui)

5:10 PM - 5:25 PM

[2E17] Chemical reaction behavior between cesium hydroxide and iron oxides

*Jumpei Imoto1, Kunihisa Nakajima1, Masahiko Osaka1 (1. JAEA)

Keywords:Cesium, Iron oxides, Chemical reaction, Chemisorption

CsOH chemisorption onto stainless steel surface is suggested to occur during a light water reactor severe accident and CsFeO2 could be formed. In order to elucidate such a chemisorption behavior, it is necessary to examine chemical reaction behavior with iron oxides formed on the stainless steel surface. In this study, chemical reaction behavior between CsOH and iron oxide was investigated by using mixed powders of CsOH・H2O and iron oxides, i.e., goethite (α-FeOOH), hematite (α-Fe2O3), and magnetite (Fe3O4). As the result, it was found that goethite and hematite were more reactive than magnetite.