Fuel Cycles for the HTGR

The High Temperature Gas-Cooled Reactor (HTGR) is particularly suited to accommodate a variety of fuel cycles because of its core characteristics. Specific qualities such as the inherently low neutron losses, the high specific power, the high burnup capabilities and the high thermal efficiency result primarily from the type of fuel element used. Graphite serves as structural material, moderator, and fission product barrier and with its low capture cross section assures a low level of parasitic neutron absorption. The excellent material properties of graphite at elevated temperatures permit high gas outlet temperatures which lead to compact, high-efficiency plants.