Mitsubishi Heavy Industries Limited

Kazuo Asada

Kenichi Matsunaga

Tadashi Kimura

Katsunari Ohsono

Kazuo Murakami

Masaharu Minami

Takeshi Yokoyama

Tadashi Shiraishi

Shinji Ookame

Yasuhiro Sakaguchi

Ganji Abe

Shigeru Kunishima

A radioactive-material container includes a container body that shields nuclear radiation, which includes a cavity that stores a basket containing a recycle fuel assembly, a lid that covers the cavity, and a metal gasket that includes a sealing area that makes a physical contact with the container body and the lid. The sealing area has a specific shape that disperses tightening stress acting on the metal gasket for a sealing.

Radioactive-material container, metal gasket for sealing the radioactive-material container, and method of manufacturing the metal gasket

A container body of a concrete cask includes a storage portion that stores a canister. A refilling system includes a reduction cylinder having an outside diameter smaller than the diameter of the storage portion and an inside diameter larger than the diameter of the canister, a first lift mechanism configured to raise and lower the reduction cylinder between a down position in the storage portion and an up position wherein it is drawn out of the storage portion, and a second lift mechanism having a holding portion for holding one end portion of the canister and configured to raise and lower the canister with respect to the container body. In refilling operations, the canister is loaded into and unloaded from the storage portion of the container body by the second lift mechanism with the reduction cylinder set in the storage portion.

Storage container, storage container refilling system, and refilling method

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Hyogo, Japan

Kazuo Asada