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

A package of radioactive material, characterized in that it comprises:

• 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,
• said canister extraction/insertion assembly is provided with a carriage bearing against said inner surface and with the 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, and
• the canister containing said radioactive material and arranged inside said cask housing.

An extraction/insertion system for a canister containing radioactive material, the canister configured to be extracted from and inserted in a cask housing delimited by an inner surface of a cask, characterized in that said system comprises a canister extraction/insertion assembly configured to bear against said inner surface of the cask and being provided with a carriage and 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 a carried position in which this canister is free of any contact with said inner surface, one of the two elements from among said carriage and said support structure being 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 the application of a relative translational movement between the carriage and canister support structure, in a longitudinal direction of the cask, causes a changeover of said two elements from said drawn-together position to said drawn-apart position, or conversely, said extraction system also comprising mobilizing means in the longitudinal direction of the cask connected to one of said two elements, and retractable abutment means cooperating with the other of said two elements.