Irradiation Performance of Advanced Coated Particles for High-Temperature Gas-Cooled Reactor Fuel Cycles

Advanced coated fuel particles doped with fission product and oxygen getters were screened for their mechanical irradiation performance compared to undoped reference-coated fuel particles of the highand low-enriched uranium cycle and the thorium/ high-enriched uranium cycle. The in-pile test was conducted under nominal and extreme operating conditions of current high-temperature gas-cooled reactor requirements. Doped coated fuel particles do not perform significantly better than reference particle systems; although, some advanced kernel varieties showed promising results.