Kabushiki Kaisha Toshiba

Plus Corporation

Masashi Tanabe

Shigeki Yokoyama

Hayato Horie

Mika Tahara

Mitsuo Komuro

Makoto Ukai

Noriyuki Katagiri

Jin Sugiyama

Takuya Miyagawa

Munetaka Takahashi

Tomohisa Kurita

Hideo Hirai

Roller stamp

A core catcher includes a holding surface that catches and holds corium and that introduces a surrounding coolant into the core catcher and cool the core catcher by heat exchange with the introduced coolant. The holding surface and the cooling unit are constructed by arranging blocks which each include a polyhedron having at least one pair of parallel surfaces and having an opening portion formed in a surface located in a lateral direction when a first surface that is one of the parallel surfaces is arranged as a bottom surface and are configured such that the polyhedrons communicate with each other via the opening portion when the polyhedrons are arranged adjacent in the lateral direction. The core catcher can achieve easier installation of the blocks without an increase in installation cost.

Core catcher

In a nuclear reactor building of a steel plate concrete structure that houses a pressure containment vessel formed with a plurality of penetration ports penetrating the pressure containment vessel on the periphery thereof and includes a biological shielding wall disposed outside the pressure containment vessel. The pressure containment vessel is vertically divided into a plurality of blocks so that each of the blocks has one or more pressure containment vessel penetration ports arranged on a same horizontal plane, and the reactor building including the biological shielding wall is divided into a plurality of modules by the horizontal plane.

Nuclear reactor building and construction method thereof

Growing community of inventors

Yokohama, Japan

Masashi Tanabe