Basic philosophy on super safe reactor

Okamoto, Koji*; Kunitomi, Kazuhiko 

This document clearly describes the safety of HTGR in comparison with LWR and its development status. In HTGR, the safety functions to stop and cool the reactor, and contain fission products in the reactor are ensured by natural phenomena, not depending on additional safety systems. Therefore, the HTGR is inherently safe and can be easily operated and controlled. In Japan, Japan Atomic Energy Agency and nuclear industries have long been developing the HTGR and constructed the High Temperature Engineering Test Reactor (HTTR) in Oarai Research Center to establish world leading HTGR technology. The HTGR should be developed as a safe nuclear reactor in Japan and can be exported worldwide as a Japanese strategic technology.