2019 Fall Meeting

Presentation information

Oral presentation

IV. Nuclear Plant Technologies » 402-1 Nuclear Safety Engineering (Safety Design, Safety Assessment/Analysis, Management)

[1G03-07] Source Term

Wed. Sep 11, 2019 10:35 AM - 11:55 AM Room G (Common Education Bildg. 2F C22)

Chair:Shinichiro Uesawa(JAEA)

11:05 AM - 11:20 AM

[1G05] Development of fission product chemistry database ECUME for improved source term estimation method

(3)Thermodynamic dataset

*Kunihisa Nakajima1, Eriko Suzuki1, Shunichiro Nishioka1, Shuhei Miwa1, Naoki Horiguchi1, Junpei Imoto1, Jiazhan Liu1, Hidetoshi Karasawa1, Masahiko Osaka1 (1. JAEA)

Keywords:Cesium , Thermodynamics , Silicon, Boron

Thermodynamic data of cesium compounds with boron and silicon are included in the thermodynamic dataset (TM) of ECUME. Chemical forms and fractions of cesium compounds formed in high temperature regions of nuclear reactors and revaporization amount of Cs chemisorbed onto stainless steel can be more accurately estimated by using the TM of ECUME. Incorporation of ECUME into severe accident analysis codes can cope with chemical behaviors of FPs influencing their release and transport behaviors and can be expected to improve source term estimations.