[2H09-13] System development and evaluation

[2H10] Study on concrete permeation calculation using PHITS code for decommissioning

*Riku Nakamura¹, Ken-ichi Tanaka^2,1, Satoshi Chiba¹ (1. Tokyo Institute of Technology, 2. The institute of applied energy)

Keywords:Decommissioning, PHITS, Concrete, Monte Carlo simulation, penetrate calculation, DCHAIN

The process of radioactivity assessment in decommissioning nuclear reactor is an important process because it involves everything in the future work process. In addition, concrete is inexpensive and excellent in shielding ability, while the composition and the neutron spectrum differ depending on the reactor. The behavior is evaluated using 3 - dimensional particle transportation Monte Carlo code PHITS.