This article will present the operating results of the RFCC unit, including an overview of the Aichi refinery and the RFCC complex. The unit is operating very well in the Aichi Refinery since its initial operation in 1987. As a result of this success another RFCC unit which will be incorporated in the Hokkaido Refinery is undergoing development. Experiences and knowledge gained in the Aichi Refinery will be applied in this unit.