Progress report of the design study on a large scale reactor; Design study on a 600MWe class plant

Hayashi, Hideyuki; not registered; not registered; not registered; not registered; not registered; Yamaoka, Mitsuaki

A design study on a large scale fast reactor was performed at OEC about 600 MWe class plant which might be the lowest power scale as a commercial one. The purpose of the study is set to present a plant concept which could stand together reality at the demonstration stage and innovativeness through commercialization, as well as to establish technological basis to support the design study of the utilities' plant. Features of this plant are as follows. (1)Application of intrinsic merit of a loop type plant, and introduction of a reactor-vessel-head-access-piping system which produces a new concept of primary piping shortening technology, simplification of cooling systems, improvement in reliability of components, and free-maintenance of equipments underneath the operating floor. (2)Plant design based on the technologies and experiences up to the prototype reactor, and also challenge to the technological breakthrough for the commercialization of FBR, such as drastic simplification of a shielding plug and a spent fuel handling system. This report describes the result of a design study on a large scale FBR plant, which will motivate utilities to construct the demonstration plant. This report eonsists of three parts of "System Design," "Sub-system Designs" and "Safety Design Guide and Safety Evaluation" which correspond to the text, the appendix VIII and the appendix X of the application of reactor construction permit respectively, and a part of R&D subjects derived from the design study.