[1L01-04] Uncertainty Evaluation 1

[1L04] Impact of truncated coated fuel particles on neutronic characteristic in statistical geometry model of MVP code

*Hai Quan Ho¹, Yuki Honda¹, Nozomu Fujimoto², Minoru Goto¹, Etsuo Ishitsuka¹ (1. Japan Atomic Energy Agency, 2. Kyushu University)

Keywords:MVP, Statistical geometry model - STG, Coated fuel particles, Effect of truncation, Neutronic characteristic

This study investigated the impact of truncated coated fuel particles on neutronic characteristic of the fuel in a statistical geometry model. Calculation results showed that the effect of truncated CFPs makes the multiplication factor decrease by about 0.1 to 1.0 %dk/k depended on packing fraction, uranium enrichment, and particle size.