Cask intended to receive a canister containing radioactive material, and transfer method for said canister

摘要

The invention concerns a cask for a canister containing radioactive material, comprising a canister extraction assembly and designed so that it can bring the canister to an extraction position inside the cask housing in which this canister is free of any contact with the inner surface. Also, one of two elements from among a carriage and a support structure of the assembly is provided with a guide ramp cooperating with a ramp follower provided on the other of the two elements, the ramp being designed so that a relative translational movement between the carriage and the structure, in the longitudinal direction of the cask, causes the changeover of the two elements from a drawn-together position to a drawn-apart position, or conversely.

主权项

1. A cask configured to receive a canister containing radioactive material, said cask having an inner surface delimiting a cask housing to receive the canister, said cask also comprising a canister extraction/insertion assembly bearing against said inner surface, the canister extraction/insertion assembly configured to move the canister inside the cask housing in a longitudinal direction of the cask, in a carried position in which this canister is free of any contact with said inner surface,
characterized in that said canister extraction/insertion assembly is provided with a carriage bearing against said inner surface and with a canister support structure carried by said carriage, said carriage and support structure configured to take up a drawn-together position in a radial direction of the cask allowing contact between the canister and said inner surface, and a drawn-apart position in the radial direction of the cask in which the canister carried by the support structure takes up its carried position, and in that one of the two elements from among said carriage and said support structure is provided with at least one guide ramp cooperating with a ramp follower provided on the other of said two elements, said ramp configured so that-application of a relative translational movement between the carriage and canister support structure, in the longitudinal direction of the cask, causes a changeover of said two elements from said drawn-together position to said drawn-apart position, or conversely.