NEUTRONICS ANALYSIS OF THE FUJI-U3 REACTOR WITH VARIOUS MIXTURES OF THORIUM, URANIUM AND PLUTONIUM FUEL Faris Rasyad Mutashim (a,b), Cici Wulandari (a,b), Sidik Permana (a,b*), Dwi Irwanto (a,b)
a. Nuclear Physics & Biophysics Research Division, Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi, Bandung, Indonesia
b. Department of Nuclear Science and Engineering, Faculty of Mathematics and Natural Sciences, Institut Teknologi, Bandung, Indonesia
*psidik[at]itb.ac.id
Abstract
Indonesia experiences limited fossil energy sources which creates a scarcity of electrical energy. The use of new renewable energy has been considered to overcome this problem. Nuclear power plants are one of the appropriate solutions for utilizing new, renewable energy using nuclear power. National Energy Council and the Ministry of Energy and Mineral Resources are targeting that by 2032 nuclear power plants will be commercialized in Indonesia. Of the various types of nuclear reactors, the Molten Salt Reactor is the most suitable type to be developed in Indonesia, which is rich in thorium and uranium. In the development of MSR, the Fuji-U3 reactor scheme was created which has 3 types of reactor cores with varying amounts of different fuel. In this research, MSR Fuji-U3 will be simulated using the SRAC program utilizing the JENDL-4.0 nuclear data library. The results obtained will produce various types of reactor neutronic data. This data is then analyzed in such a way as to obtain a final conclusion regarding the Fuji-U3 reactor. The Keff of the reactor has a value that decreases during operation and greatly influences the amount of fissile substances in the fuel. The CR value is the opposite of Keff. The highest burn-up was obtained by a mixture of thorium-uranium 233 fuel. The smallest peak power ratio was obtained by a mixture of natural uranium fuel and weapons grade plutonium.
Keywords: nuclear power plant, FUJI-U3, neutronic analysist, K-eff
Topic: Theoretical and Computational Nuclear Physics
