STUDY ON 233U AND PLUTONIUM UTILIZATION IN THORIUM MOLTEN SALT REACTOR WITH SMALL POWER 25-30 MWT

• Main Author: RICHARDINA (NIM : 20210018); Pembimbing : Dr. Eng. Abdul Waris, VERY
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/17498
• Institution: Institut Teknologi Bandung

Molten Salt Reactor (MSR) are selected as one of the candidates of the generation IV reactor concept, since it has several advantages such as safety improvement, resource sustainability, waste burning, and proliferation resistance. Recently proposed a concept of Thorium Molten Salt Nuclear Energy Sinergetic(THORIMS-NES) with the first stage is the construction of miniFuji. miniFuji using 233U-Th as fuel with 5 years of refueling and 350 MWt output power. In this study we use 233U-Th and Plutonium-Thorium as fuel in miniFuji with various output power of 25-50 MWth and 20 years refueling. Plutonium composition consisting of Reactor Grade Plutonium and Weapon Grade <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> Plutonium. Composition of the 233U-Thorium used in this study were 1.20-1.60% 233U and 11.02-10.62% Thorium. Composition of Reactor Grade Plutonium-thorium used in this study are 8.26- 5.46% Th and 3.96-6.76% Pu. Fuel <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> composition of Weapon Grade Plutonium used in this study was 11.6-8.26% Thorium and 1.16-3.96% Plutonium. The results show that the required 233U concentrations for criticality are about 1.28% for 25 MWt, 1.34% for 30 MWt, 1.38% for 35 MWt, 1.44% for 40 MWt, 1.48% for 45 MWt and 1.54% for 50 MWt, respectively. For the fuel Reactor <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> Grade Plutonium the demans of Plutonium fractions for criticality are about 5.36% for 25-35 MWt and 5.56% for 40-50 MWt. For Weapon Grade Plutonium the need of Plutonium concentrations for criticality are about 2.96% for 25-30 MWt, 3.16% for 35-45% MWt and 3.36% for 50 MWt,respectively.