Studies on the concepts of HTGR plants viable in Japan Part II: Discussion of the results

Abstract Two topics are reviewed as the major results of the studies reported here: assessing the mechanisms of the inherent safety characteristics of the Modular HTGRs. Comparison of specific features between HTR-Module and MHTGR and the analyses of the heat transport capability at the depressurization accident are included. The reference plant is examined for the viability assessment studies. In this paper, some of the results of our scenario for the design of the PCRV type HTGRs are introduced.