TY - JOUR ID - 125531 TI - Feasibility study of application of ThO2 fuel rods in VVER-1000 fuel assemblies using MCNP and ORIGEN codes JO - Radiation Physics and Engineering JA - RPE LA - en SN - 2645-6397 AU - Gholamzadeh, Zohreh AU - JozVaziri, Atieh AD - Reactor and Nuclear Safety Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran Y1 - 2021 PY - 2021 VL - 2 IS - 1 SP - 35 EP - 41 KW - Power reactor KW - Thorium fuel KW - Burnup KW - Gamma emission rate KW - Computational calculations DO - 10.22034/rpe.2021.242881.1022 N2 - ‎Thorium is more abundant in nature than uranium‎. ‎The fertile thorium fuel can breed to fissile U-233 by absorbing a neutron‎. ‎The produced fissile has good neutronic performance in both thermal and fast neutron spectra‎. ‎Many types of thorium-based fuels were applied in different nuclear reactors‎. ‎Also natural thorium oxide is used as seed/blanket configuration that the ThO2 rods are used in the outer sections of any fuel assembly‎. ‎The present study aims to investigate the ThO2 fuel rod loading in 3000 MW VVER-1000 power reactor‎. ‎MCNPX and ORIGEN codes were used to evaluate its effects on the core neutronic‎. ‎In addition‎, ‎the gamma emission rates of ThO2 spent fuel than the UO2 routine fuel of VVER-1000 was investigated‎. ‎The obtained results of the computational study showed the ThO2 fuel rod loading in some VVER-1000 fuel assemblies would not end to a breeding behavior of the reactor core even after one-year burnup at 3000 MW power‎. ‎However‎, ‎the enriched uranium fuel loading reduction may make a motivation for thorium fuel application in the power reactor‎. UR - https://rpe.kntu.ac.ir/article_125531.html L1 - ER -