Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Kenichi Mantani

Hiroaki Taniuchi

Jun Shimojo

Hiroshi Akamatsu

A transport/storage cask for a radioactive material has an inner shell, an outer shell and a circular gamma ray shielding layer and a circular neutron shielding layer both of which are placed between the inner shell and the outer shell. The gamma ray shielding layer is formed by aligning a plurality of gamma ray shielding blocks composed of lead in a block shape in the circumferential direction. The entire gamma ray shielding block in the axial direction is covered with a copper tube having a higher elasticity limit than the gamma ray shielding block. In the above transport/storage cask, the gamma ray shielding layer composed of lead or a lead alloy is not easily deformed.

Transport/storage cask for radioactive material

A transport/storage cask for a radioactive material has an inner shell and an outer shell, and between the two shells, a gamma ray shielding layer and a neutron shielding layer are provided. The transport/storage cask also includes heat-conductive members which are provided so as to penetrate through the gamma ray shielding layer and the neutron shielding layer. The transport/storage cask for a radioactive material is capable of containing a radioactive material at an enhanced efficiency, exhibits excellent heat-conductive performance, and effectively shields gamma rays and neutrons.

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Takasago, Japan

Kenichi Mantani