Hitachi, Ltd.

Takanori Shimoshige

Masaaki Yamamoto

Junichi Yamashita

Sadao Uchikawa

Renzo Takeda

Kunitoshi Kurihara

Michiro Yokomi

A construction of boiling water reactor core having a plurality of fuel assemblies. Some of fuel assemblies have an infinite multiplication factor which is larger at their upper regions than at their lower portions, so that the effective multiplication factor of the reactor core is larger at the upper portion than at the lower portion of the reactor core under an equal condition. Consequently, a relatively flat axial power distribution is established even under an uneven axial void distribution.

Growing community of inventors

Hitachi, Japan

Takanori Shimoshige