Abstract
JAERI has undertaken the study of an original design concept of gas turbine high temperature reactor, the GTHTR300. The general concept of this study is development of a greatly simplified design that leads to substantially reduced technical and cost requirements for earlier technology deployment. Newly proposed design features such as core design with long refueling interval, conventional steel material usage for a reactor pressure vessel due to innovative plant flow scheme and horizontally installed gas turbine unit enables the GTHTR300 to be an efficient and economically competitive reactor in 2010. This paper describes the original design features in detail, exemplified by a particular plant design.
