Mitsubishi Heavy Industries Limited

Suguru Hode

Katsunari Ohsono

Toshihiro Matsuoka

Shinji Ookame

Kiichiro Sakashita

Tomohiro Itoh

Heat conductive fins () are welded along both sides of a belt-like member () with a margin left along edges of the both sides, thereby to form a unit (). The unit () is welded to a body () with the heat conductive fins () from the outside of each fin. Next, another belt-like member () is covered over a gap between adjacent belt-like members (), and these members are welded from the outside. With this arrangement, there is no need to weld in a narrow and long space and the entire welding step is carried out from the outside, which makes it easier to assemble a cask.

Cask and method of manufacturing the cask

The absorbing rods have a nearly the same shape as the shape of columnar control rods for PWR used in reactivity control of core in a reactor. The absorbing rods can shield neutrons, and are inserted in control rod guide pipes and measuring pipes in fuel assemblies.

Absorbing rod, an apparatus for inserting the absorbing rod, a cask, and a method of storing spent fuel assemblies

Heat conductive fins are welded along both sides of a belt-like member with a margin left along edges of the both sides, thereby to form a unit. The unit is welded to a body with the heat conductive fins from the outside of each fin. Next, another belt-like member is covered over a gap between adjacent belt-like members, and these members are welded from the outside. With this arrangement, there is no need to weld in a narrow and long space and the entire welding step is carried out from the outside, which makes it easier to assemble a cask.

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Hyogo, Japan

Suguru Hode