Analisis Desain Teras Gas-Cooled Fast Reactor (GFR) Berpendingin S-CO2 Berbahan Bakar Uranium Nitrit dengan Minor Aktinida

, and low real peak temperature (~650 o ), can cool the reactor core. The fuel method uses a Modified CANDLE burn-up strategy. The MCANDLE burning strategy in the radial direction with two refueling schemes, scheme X (from the outside of the core to the inside) and scheme Y (from the center of the core to the outside), has been implemented. We used SRAC and JENDL-4.0 data in the calculations. In this research, parameter studies were obtained by calculating the values of the infinite multiplication factor, effective multiplication factor, reactivity, and power distribution. The results show that the K eff value before adding Minor Actinides for schemes X and Y is 1.0893 and 1.0915. After adding minor actinide, the Keff value of 1% - 7% in schemes X and Y is in critical condition, and after adding minor actinide 4% - 7%, the reactor is in supercritical condition. The reactor reactivity in schemes X and Y is 0.0939 and 0.1089. For the axial direction power distribution for the X and Y schemes, 1.5285 and 1.5323. The radial direction power distribution in the X and Y schemes is 1.5862 and 1.8320. Based on these results, the addition of minor actinides and the fuel preparation scheme affect the criticality and power distribution of the GFR core.