[2B06-08] HTTR Analysis

[2B08] HTTR brunup calculation with MVP-BURN

Calculation with detailed axial mesh model

*Nozomu Fujimoto¹, Reiji Ikeda¹, Hai Quan Ho², Shinpei Hamamoto², Satoru Nagasumi², Etsuo Ishitsuka² (1. Kyushu Univ., 2. JAEA)

Keywords:HTTR, MVP, Burnup calculation, power distribution

HTTR whole core burnup calculation with detailed axial tally model using MVP-BURN was carried out. In the fuel region, tally regions set as each fuel compact (39mm in height). Detailed axial power distribution and nuclide distributions are shown by the calculation. There are small effects on change in effective multiplication factor. Burnup calculations with detailed tally in BP rod and radial tally division in fuel region will be carried out.