A review of fast reactor program in Japan. April 1999 - March 2000

This report describes the development and activities of fast reactors in Japan through April 1999 to March 2000. During this period, the most important result of the Japanese Fast Breeder Reactor (FBR) Project was the phase-1 feasibility studies on commercialized fast reactor cycle system which started in July 1999, associating with electric power companies. In the Experimental Fast Reactor 'Joyo', the 33rd and 34th rated power operation carried out after the 12th periodical inspection. The 35th rated power operation is under continuance by the end of May 2000. The 13th periodical inspection and reconstruction works for the Joyo upgrading program (MK-III) will be started at the beginning of June 2000. In the Prototype Fast Breeder Reactor 'Monju', countermeasures against sodium leakage are being examined according to the Monju comprehensive safety review. The 'Long-term Program for Development and Utilization of Nuclear Energy' is now under deliberation in the special committee of the Japan Atomic Energy Commission. The Commission will issue the new plan by the end of 2000. (author)