Abstract
High-Temperature Gas Reactor (HTGR) is a type of reactor that continues to be developed because of its advantages in terms of economic aspects, proliferation resistance, and safety aspects. One of the safety aspect improvements is due to the use of the Coated Fuel Particle (CFP). A coated fuel particle is a fuel with a diameter smaller than 1 mm and is protected by several carbon layers. In the Pebble Bed Reactor (PBR) type of HTGR design, the CFP is placed in a 6 cm fuel ball. How much CFP is put into the fuel ball will determine the neutronic characteristics of the reactor. In this study, the effect of the amount of CFP in the fuel ball on the 25 MWt PBR design using Thorium fuel and its impact on several important neutronic aspects, such as the effective multiplication factor, the amount of fuel enrichment, the utilization of fissile material, and the density of the fissile material formed. The calculation was performed by the Monte Carlo MVP / MVP-BURN code. This study found that the coated fuel particle fraction of 15% was the optimum value for the studied neutronic parameters.
Highlights
The world's energy needs, which continue to increase along with the times, require as many alternative solutions as possible that can be immediately implemented
The present study aimed to study the effect of the amount of coated fuel particles on the 25 MWt pebble-bed type High-Temperature Gas Reactor (HTGR) reactor design using thorium fuel
The parametric survey was conducted to determine the effect of the enrichment value of fissile material on the criticality of the reactor with an enrichment value between 1-20%
Summary
The world's energy needs, which continue to increase along with the times, require as many alternative solutions as possible that can be immediately implemented This is especially true for Indonesia, one of the most populous countries in the world, with such a large population that it is well known on various islands. For a densely populated area such as Java island, the need for electricity for both the community and industry requires power plants with large power without being too bothered by the supply of fuel because of the established infrastructure lines. It is different from areas located on small islands with a small population and a distribution channel infrastructure that is not as stable as the big islands. The first is the prismatic type HTGR, where the fuel is formed into a fuel rod consisting of a compact in the form of a small cylinder, while the second type is HTGR pebble bed, in which the fuel is Jurnal Penelitian Pendidikan IPA (JPPIPA)
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