Design study of the demonstration FBR in Japan

The objective of the plant design study Phase 2, conducted by the Japan Ato mic Power Company since 1997 for 3 years, is to accomplish a plant overall concept of the Demonstrative FBR (DFBR) that has economical potential towar d commercialization and offers high reliability to plant operators not to c ause a long unexpected shutdown resulting from a trouble, i.e., sodium leak age or fires. This has been successfully achieved by establishment of a pla nt overall design of 672 MWe consisting of the reactor system with drastica lly simplified internals, the compact and double walled coolant boundaries, the well rationalized fuel handling system, the BOP systems introducing up -to-date LWR equipment, and the compact reactor building. The plant construction cost has been estimated based on the quantity of mat erials to be about 130 % on the bases of a 1000 MW LWR, which is well conte nted with the requirement. The DFBR plant concept, having economical potential toward commercializatio n, safety and reliability, has been established in the plant design study P hase 2. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.