[1F15-18] Uncertainty Evaluation 1

[1F15] Uncertainty quantification of activation in reactor structures using Reduced Order Modeling

*Koji Hayashi¹, Kimihiro Yokoi², Tomohiro Endo², Akio Yamamoto², Ryoji Mizuno¹, Yoshio Kimura¹ (1. Chuden CTI, 2. Nagoya University)

Keywords:Reduced Order Modeling, Activation, Uncertainty, Perturbation theory, Singular value decomposition

Uncertainty quantification of activation in structure materials around a nuclear reactor requires a lot of computational times and resources to carry out the neutron transport calculation for the large geometry. In this study, we developed an uncertainty-quantification method using Reduced Order Modeling (ROM), which enable to estimate the uncertainty with low computational cost. The proposed method was verified for one- and two-dimensional cylindrical geometry.