DEVELOPMENT OF FUGEN TYPE HWR IN JAPAN.

FUGEN is a 165 MWe prototype of a heavy water, moderated boiling, light water-cooled reactor using mixed oxide (MOX) fuel. In parallel with the Fugen project, design and development are being carried out on a 600MWe demonstration plant. The FUGEN type HWR is considered in Japan to contribute to Japanese energy security by using plutonium and depleted uranium extracted from LWR's spent fuel, thereby reducing the demand for natural uranium and enriched uranium. The present status of FUGEN and development of the 600MWe Demonstration Plant are summarized in this paper.