TRISO fuel particles, used in high-temperature gas-cooled reactors (HTGR) are composite structures with a nuclear fuel kernel surrounded by alternating layers designed to contain fission products and compensate for radiation damage. As shown in Figure 1, a typical fuel particle contains an inner kernel of nuclear fuel, a low-density buffer layer of pyrocarbon, a dense layer of pyrocarbon coatin...

A High Temperature Gas-cooled Reactor (HTGR) is one of the renewed reactor designs to play a role in nuclear power generation. This reactor design concept is currently under consideration and development worldwide. The combination of coated particle fuel, inert helium gas as coolant and graphite moderated reactor makes possible to operate at high temperature yielding a high efficiency. In this ...

The Japan Atomic Energy Agency (JAEA) started the Research and Development (R&D) to improve nuclear prediction techniques for High Temperature Gas-cooled Reactors (HTGRs). objectives are introduce a generalized bias factor method avoid full mock-up experiment first commercial HTGR reactor noise analysis Engineering Test Reactor (HTTR) observe sub-criticality. To achieve objectives, core of ...

Abstract Hydrogen is a commercially important element. Basically, there are several methods of hydrogen production that have been used, such as Steam Methane Reforming (SMR), High Temperature Electrolysis (HTSE), and thermochemical cycles, like Sulphur-Iodine (SI). Among these methods, SMR the most widely used for large-scale production, with conversion efficiency between 74–85% it has in some ...