R&D on commercial high temperature gas-cooled reactor

Abstract High temperature gas-cooled reactor (HTGR) can be used in various ways such as hydrogen production and process heat supply as well as power generation. For the commercial HTGR, R&D on the system, and safety designs, key components for heat application and advanced fuel have been carried out by JAEA as shown in the following items: system design for power generation, system design for cogeneration, system design for steelmaking, safety design for connection of HTGR and heat application system, gas turbine technology for power generation, iodine–sulfur process technology for hydrogen production, system integration technology for connection of heat application system and HTGR, prevention technology for air ingress during depressurization accident, advanced fuel technology for high burnup, advanced fuel technology for plutonium burner, and advanced fuel technology for reduction of high-level radioactive waste. The final chapter explained research and development on the system and safety designs, key components for heat application and advanced fuel.