Commissariat a L'energie Atomique

Pierre R Auchapt

Aime J Ferlay

Maurice Tarnero

Philippe Seyfried

Jose Symard

Didier Saudray

Henri Sauvage

Jacqueline Auchapt-Tavenaux

Robert Sablier

Daniel Mathieu

Electromagnetic filter making it possible to continuously discharge filtration products and a corresponding filtration process. Apart from a conventional filtration section, the filter according to the invention comprises a discharge section and preferably a washing section. A pulsation leg makes it possible to apply to the liquid column a pulsation bringing about a sudden rise of the column and then its slow fall again. Thus, the filtration products are raised and then discharged. Application to the filtration of solutions containing solid products in suspension.

Electromagnetic filter

Machine for compacting fuel assemblies, constituted by protective structures containing the fuel and carrying caps at their ends, and for separating the caps from said structures, wherein it comprises a frame forming a lateral bearing surface, a compacting slide block forming a lateral bearing surface facing the first-mentioned bearing surface, a feed opening formed in the frame for introducing an assembly between these surfaces, means for displacing the slide block in a direction perpendicular to these surfaces, two cutting members carried by the slide block and respectively facing the two discharge openings for the caps formed in the frame at the ends of the bearing surface formed thereon, means for displacing the cutting members in said direction in order to separate the caps from the structures, and means for discharging the compacted structure to a discharge opening for the same, formed in the frame.

Machine for compacting fuel assemblies

The invention relates to a device for controlling the pressure within a pulsed column. The device comprises first and second dipping tubes respectively issuing into the column at the level of points P.sub.1 and P.sub.2, means for introducing a gas into each of the tubes and for bubbling it in the column liquid and means for determining the pressure difference between said tubes. The first and second dipping tubes respectively issue into the column via cavities C.sub.1 and C.sub.2 having dimensions such that during pressure variations due to pulsation, the gas-liquid interface is always located in each of said cavities and the variations in the gas-liquid interface level in each cavity are inversely proportional to the densities of the liquids present in each cavity. Thus, it is possible to eliminate the prejudicial influence of pressure variations within the liquid due to pulsation. The device can in particular be used for measuring the interface level in the decanter.

Device for measuring a pressure difference within a pulsed column

A process for remotely fixing toxic dust, such as plutonium oxide, on the surfaces of a sealed cavity defining an airlock between two enclosures containing toxic material which are sealingly coupled to each other, so as to avoid contamination of the atmosphere upon uncoupling of the enclosures. The cavity is filled through an inlet zone with a solution of silicone grease in a solvent, such as freon, which is capable of wetting the surfaces of the cavity. The solvent is vaporized and evacuated from the cavity such that the silicone grease is deposited on the surfaces of the cavity to fix the toxic dust thereto.

Process for the remote coating of the surfaces of a cavity, as well as

An apparatus for dissolving a powder in a liquid solvent, wherein it comprises a vertically axes rotary bowl, means for introducing the powder and the liquid solvent into the bowl, and a fixed cylindrical member arranged coaxially within the bowl and having on its outer face at least one first helicoidal ramp oriented with respect to the bowl rotation direction in such a way that it ensures the raising of the solution up to means ensuring the removal thereof from the bowl.

Apparatus for dissolving a powder in a liquid solvent

Vortex apparatus for the continuous production of a precipitate by reacting together at least two reactants wherein it comprises a rotary bowl, having a vertical axis a fixed cylinder arranged coaxially within the bowl in order to define with the latter an annular raising chamber, thus providing a fluid flow connection with a reaction chamber defined within the fixed cylinder, reactant inlet pipes issuing into the upper part of the reaction chamber in the vicinity of the axis of the bowl, at least one weir fixed to the rotary bowl at the upper end of the raising chamber and a turbine fixed to the rotary bowl in the lower part of the reaction chamber, so as to produce a vortex in the latter and ensure the raising of part of the precipitate into the raising chamber.

Vortex apparatus for the continuous producing of a precipitate

Apparatus for treating the compounds in a corrosive liquid comprising a fixed tank in which the liquid is placed, a horizontally axed rotary support which peripherally carries at least one bucket for receiving the compound to be treated, means for introducing the compound into the bucket, means for removing the compound from the bucket, means for rotating the rotary support about its shaft and means for guiding the rotary support during its rotation about its shaft, wherein the guidance means are entirely arranged within the tank, the guidance means and the driving means being positioned above a horizontal plane passing through the axis of the rotary support.

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Bagnols, France

Pierre R Auchapt