Title: Preliminary design of ADS for low to medium power output with uranium fuel

Authors: Nur Aida; Suardi Nur; M. Faisi Ikhwali

Addresses: Department of Physics Engineering, State Islamic University of Ar-Raniry, Banda Aceh, Aceh, Indonesia ' Department of Environmental Engineering, State Islamic University of Ar-Raniry, Banda Aceh, Aceh, Indonesia ' Department of Environmental Engineering, State Islamic University of Ar-Raniry, Banda Aceh, Aceh, Indonesia

Abstract: A Pb-Bi cooled ADS with uranium fuel has been designed to be operated for 20 years. This reactor can produce 10 MW-th, 25 MW-th, and 50 MW-th power output. The volume and mass distribution of the designed ADS were analysed with a two-dimensional multigroup diffusion equation for each type of reactor core. Two variations of multiplication factor (K_eff) values of 0.95 and 0.98 have been applied for the simulation in a designed ADS to examine the volume and mass distribution of the fuel and burn-up. The designed ADS uses two points of sources with source distributions of 10¹² neutrons/second. The power distribution is calculated in the radial and axial directions. The tall-type reactor core is found to be ideal compared to balance and pancake types. Furthermore, the simulation results show that the mass requirement of fuels, in this case, U-235, U-238, and Pu, is higher at the K_eff 0.98.

Keywords: ADS; core distribution; diffusion equation; burn-up; Pb-Bi; uranium; balance reactor; tall reactor core; pancake reactor; depleted uranium.

DOI: 10.1504/IJNEST.2023.132680

International Journal of Nuclear Energy Science and Technology, 2023 Vol.16 No.2, pp.121 - 142

Received: 01 Jun 2022
Received in revised form: 17 Jan 2023
Accepted: 28 Jan 2023
Published online: 07 Aug 2023 *