[1G03-07] Source Term

[1G03] Development of fission product chemistry database ECUME for improved source term estimation method

(1)Dataset for chemical reaction kinetics

*Shuhei Miwa¹, Naoki Horiguchi¹, Naoya Miyahara¹, Kunihisa Nakajima¹, Eriko Suzuki¹, Junpei Imoto¹, Liu Jiazhan¹, Hidetoshi Karasawa¹, Masahiko Osaka¹ (1. JAEA)

Keywords:Fission product, Severe accident analysis code, Cesium, Boron

We developed the fission product chemistry database named ECUME for the LWR severe accident. The dataset for chemical reaction kinetics of ECUME consists of main chemical reactions and their effective chemical reaction kinetic constants. This dataset has the advantages in evaluation of the effects of molybdenum and BWR control material boron on cesium and iodine chemistry. This can improve prediction accuracy of chemical forms and their fraction in lower temperature region such as primary containment vessel and reactor building.