[1H06-09] Advanced Reactor Design

[1H09] Development of a utility tool for auto-seeking critical control rod position of the high temperature engineering test reactor

*Hai Quan Ho¹, Nozomu Fujimoto², Shimpei Hamamoto¹, Satoru Nagasumi¹, Minoru Goto¹, Etsuo Ishitsuka¹ (1. JAEA, 2. Kyushu Univ.)

Keywords:HTTR, MVP-BURN, Control rod, Burnup calculation, Criticality calculation

Determination of critical control rod position of a reactor during burnup is quite complicated because Monte-Carlo cannot change the geometry during transport calculation. This study develops a utility tool coupled with MVP-BURN code to automatically seek the critical control rod position of the HTTR. With the new tool, the procedure to determine the critical control rod position becomes simple, and the calculation time is also reduced.