Abstract: Dangerous packages, such as high activity nuclear packages, are placed in adjacent compartments (22) formed in the body (10) of transport packing. The compartments (22) are closed by individually closure plugs (28) and by a common cover (34) that works in cooperation with one face (17) of the body (10) with three seals in series. Connectors installed on the cover (34) and opening up between the seals, are used to make an inspection of the helium confinement. The steel inner casing (24) in each compartment (22) is doubled up on the outside with a copper weld free casing (50). This arrangement significantly improves the confinement inspection, enables a global helium inspection, and if necessary can be used to isolate an unsealed compartment (22).

Abstract: A clearing device for a centrifugal separator holds a cake on a filtering medium lining at least the perforated part of a rotating basket. The clearing device includes several clearing members which, when arranged at rest, are more or less parallel to the generatrices of the perforated wall of the basket and between this wall and the filter medium, are spaced angularly, each clearing member resting, via one of its ends, on one wall of the basket and being equipped, at the other end, with a control means capable of receiving a longitudinal compressive force which, by deforming the clearing members causes the formation of at least one convex projection which locally deforms the filtering medium. The clearing device also includes actuating means capable of coming into contact with the control means of each clearing member to shift it in the direction for forming the projection.

Abstract: A device for cooling containments, and particularly silos for storing irradiated nuclear fuels, comprising at least two rows of vertical tubes that clamps maintain applied against the wall to be cooled, the free space or housing which contains tubes being filled with a mass of a material ensuring good heat transfer. The ambient air may, by natural convection, traverse the tubes to dissipate the heat into the atmosphere.

Abstract: The device comprises a first wide-mesh cloth or screen which bears against the calender of a basket, at least one tight supple tube connected to a source of gas under pressure which is against the first cloth or screen, a second cloth or screen identical to the first covering the tube such that the tube is sandwiched between the cloths or screens, and a fine-mesh filtering cloth covering the second cloth or screen.

Abstract: A continuous decanter assembly suitable for processing nuclear materials comprises a mechanical assembly for driving a decanter bowl and an Archimedean screw. Sealing structure is provided to enable the decanter bowl and screw to be disconnected from the mechanical assembly and accessed by an operator without risk of nuclear contamination.

Abstract: A seal system for mounting a centrifuge within an opening between an area which is sterile and a contiguous area wherein the rotating basket of the centrifuge and its enclosure are accessible within the sterile area and are hermetically sealed with respect to the contiguous area.

Abstract: Installation for the centrifugal spin-drying or combined spin-drying and drying of fibrous or porous materials comprising, in combination, a spin-drier and a material carrier adapted to receive at least one pile of spools or similar of fibrous or porous materials, said material carrier being formed from a plurality of supports each adapted to receive a pile of spools or similar, disposed along at least one ring about a common axis formed by a central caisson, said spin-drier being equipped with a basket comprising a plurality of pockets or similar each adapted to receive a pile of spools or similar carried by a support of the material carrier, said supports being designed to be each housed in a pocket of the basket of said spin-drier and the common axis about which said supports are disposed in a ring being formed by a hollow central caisson adapted to fit into the central pivot of the centrifugal spin-drier.