[2O01-04] code-system development

[2O04] Development of Mitsubishi PWR Nuclear Design Code System GalaxyCosmo-S

(13)Application of sensitivity analysis to GALAXY

＊Kazuya Yamaji¹, Yohei Kamiyama¹, Hiroki Koike², Kazuki Kirimura¹, Shinya Kosaka¹ (1.Mitsubishi Heavy Industries,Ltd., 2.MHI Nuclear Systems and Solution Engineering Co., Ltd.)

Keywords:GALAXY, Generalized perturbation theory, Sensitivity analysis, Method of characteristics

Sensitivity analaysis option based on generalized perturbation theory (GPT) was applied to the 2D assembly calculaion code GALAXY using method of characteristics. We validatied the GPT sensitivity analysis option of the GALAXY code by comparion in k-infinity and reactiviy worth between GPT and direct perturbation calculation results.