[1F15-18] Uncertainty Evaluation 1

[1F17] Variance reduction on uncertainty analysis by random sampling method

(1)Variance reduction approach to uncertainty analysis for infinity multiplication factor in fuel assembly

*shigeki shiba¹, Tomohiro Sakai¹, Toshihisa Yamamoto¹ (1. Nuclear Regulation Authority)

Keywords:MCCV method, MMC method, Monte Carlo sampling , Uncertainty analysis

In uncertainty analysis by Monte Carlo sampling method, MCCV and MMC methods are applied to the analysis since the analysis requires hundreds to thousands sampling cases. The paper introduces variance reduction methods and addresses applicability of variance reduction methods against uncertainty analysis of infinity multiplication factor in fuel assembly.