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| Number | Title | Issue Date |
| 8003845 | Process for the complete combustion and oxidation of the mineral fraction of waste treated in direct incineration-vitrification apparatus The invention concerns a process enabling the complete combustion and oxidation of the mineral fraction of combustible waste contained in an apparatus intended to treat waste by direct incineration-vitrification, said process comprising the following steps: ... | 08/23/2011 |
| 7887767 | Process for reprocessing a spent nuclear fuel and of preparing a mixed uranium-plutonium oxide The invention relates to a process for reprocessing a spent nuclear fuel and for preparing a mixed uranium-plutonium oxide, which process comprises: a) the separation of the uranium and plutonium from the fission products, the amer... | 02/15/2011 |
| 7730745 | Vitrification furnace with dual heating means Process for combustion and vitrification of waste in which at least one oxygen plasma jet is associated with a continuous melting device by high frequency direct induction. The crucible is composed of a continuous external shell and a sole plate, both cooled by a li... | 06/08/2010 |
| 7718010 | Method for treating a surface with a treatment gel, and treatment gel The present invention related to a method for treating a surface with a gel, as well as to a treatment gel. The treatment may be a decontamination, etching or surface degreasing treatment, for example. The method comprises in this order, the following ... | 05/18/2010 |
| 7503188 | Vitrification furnace with dual heating means Process for combustion and vitrification of waste in which at least one oxygen plasma jet is associated with a continuous melting device by high frequency direct induction. The crucible is composed of a continuous external shell and a sole plate, both cooled by a li... | 03/17/2009 |
| 7329399 | Hydrogen trapper compound, method for the production and uses thereof A hydrogen-trapping compound is provided, along with a process for manufacturing the compound, and its uses, wherein the hydrogen-trapping compound is characterized in that it contains at least one metal salt of formula MX(OH), in which M represents a divalent trans... | 02/12/2008 |
| 7309376 | Method and installation for producing breathable air The invention relates to a process for producing respirable air comprising the following stages: treatment of compressed air comprising an air-drying operation; and rehumidification of the treated dry air. According to the invention, the rehumidification stage of th... | 12/18/2007 |
| 7268353 | Measuring the moisture content of plutonium oxide canisters A process for measuring the moisture content in a quantity of PuO2 powder. The process detects the content of thermal neutrons emitted by the quantity of PuO2 powder and then deduces its moisture content from a value of the detected content ass... | 09/11/2007 |
| 7101822 | Method for decontaminating solid iodine filters The invention relates to a process for decontaminating solid iodine filters containing silver iodide, silver iodate and/or physisorbed molecular iodine. This process consists in placing the filter in contact with an aqueous solution of a reducing agent chosen... | 09/05/2006 |
| 7024932 | Device for detecting electromagnetically the level of a material which is conductive, or made conductive, particularly molten glass Device for detecting electro-magnetically the level of a material which is conductive, or made conductive, particularly molten glass. The device comprises an inductor (32) creating an alternating current in the material and surrounding the container (24 | 04/11/2006 |
| 6996153 | Core-type furnace Vertical segments of a side wall of a crucible for an induction furnace are assembled at an adjustable, invariable position by screws screwed into tapped holes of a flange common to all segments. A precise assembly is thus obtained producing no deformation and no in... | 02/07/2006 |
| 6864095 | Method for making an optical fiber chemical sensor comprising a colored indicator, useful in particular for measuring nitric acid The invention concerns the production of a chemical sensor which can be used to measure nitric acidity. This sensor is produced using a sol-gel method for depositing a porous film, containing a colored indicator, on the core of an optic fiber. The pH of the i... | 03/08/2005 |
| 6810756 | Sampling device A rotating plug (4) is installed in a body (1) and can be in different positions in which two lateral drillings come in front of the orifices corresponding to the body (1) or a sampling orifice (18) in front of which a flask is placed. Th... | 11/02/2004 |
| 6450680 | Apparatus for mixing powder The powder mixing apparatus comprises a circular section cylindrical body having a longitudinal axis that is substantially horizontal, the body being leakproof and having two disk-shaped walls and an annular wall, the apparatus having a disk placed coaxia... | 09/17/2002 |
| 6449034 | Method for controlling perpendicularity of a cylindrical part, such as a nuclear fuel pellet In order to control the perpendicularity of a component (10) such as a nuclear fuel pellet, this component is placed upon a support plane and measurements are taken, by means of two pairs of laser micrometers (A1, A2; B1, B2), of the distances separating ... | 09/10/2002 |
| 6428679 | Electrolytic method for the recovery and recycling of silver from a nitric acid solution This invention relates to an electrolytic method for the selective recovery and recycling of silver from a nitric acid solution containing it in the form of Ag(I), this method comprising successive steps of electro-deposition of the silver in the form of ... | 08/06/2002 |
| 6051972 | Eddy current inspection of tubes with magnetic saturation by a concentrated magnet generated magnetic field The apparatus enables eddy current inspection of a metal tube having a thin layer on its outside face with magnetic or electrical characteristics that are different from those of the metal in-depth. The apparatus comprises a measurement head having a meas... | 04/18/2000 |
| 6024482 | Device for transferring and mixing pulverulent products A machine (3) provided with an elevator chassis (8), a body (12) swinging round a vertical axis and extended on two opposite sides by a distribution chute (16) and by a plate (11) adapted to grasp a powder-filled jar (1). The plate (11) can rotate in orde... | 02/15/2000 |
| 5957018 | Process and apparatus for cutting up by shearing of elements of a nuclear installation A process and apparatus for cutting up an element used in the construction of a nuclear installation for dismantling. The element is placed on a support and pushed toward a shearing tool having a blade pitch angle of 30°. As the element is pushed, the bl... | 09/28/1999 |
| 5940464 | Tube for a nuclear fuel assembly, and method for making same A zirconium alloy tube for forming the whole or the outer portion of a nuclear fuel pencil housing or a nuclear fuel assembly guide tube. The zirconium alloy contains 0.8-1.8 wt. % of niobium, 0.2-0.6 wt. % of tin and 0.02-0.4 wt. % of iron, and has a car... | 08/17/1999 |
| 5852642 | Method and apparatus for inspecting the geometry of a guide tube The apparatus is for internal inspection of a guide tube of a nuclear fuel assembly and measurement of deformations of a zone of smaller diameter in a terminal portion of the tube. The apparatus has a stick whose distal portion presents, in succession, st... | 12/22/1998 |
| 5820652 | Sealing system for the engagement of a container beneath a melting furnace A sealing system for the engagement of a container (24) beneath a melting pot containing a molten material, comprising a shell (30) surrounding a nozzle (40), the nozzle being located in the axis of the neck of the container and permitting the pouring of ... | 10/13/1998 |
| 5817953 | Method and apparatus for rinsing a device for circulating a liquid for sampling purposes The invention relates to a process for rinsing a device for circulating a liquid between a storage tank (1) and a sampling head (2) from a supply pipe (3) to which is connected a motor air pipe (12). The rinsing or washing consists of injecting a rinsing ... | 10/06/1998 |
| 5745835 | Process and apparatus for dissolving a mixture of oxides of uranium and of plutonium A process and apparatus for dissolving a mixed oxide or mixture of oxides of uranium and plutonium. The powder is added with nitric acid to a chamber to dissolve uranium oxide, and the solution is circulated through a circuit of the apparatus with a porti... | 04/28/1998 |
| 5657508 | Apparatus for the extraction of objects immobilized in a pneumatic transfer network Apparatus for the extraction of objects (32) immobilized in sections (19) of a pneumatic transfer network (30). The apparatus includes a flexible pipe (12), a metal-clad or radiation-impervious container (10) and a blower (5). A flange (16) makes it possi... | 08/19/1997 |
| 5592027 | Compacting flammable and/or explosive metal waste A method of compacting, without danger of ignition and/or explosion, metal waste that is liable to ignite and/or explode while being compacted. The method comprises in compacting a container that contains said waste and that is saturated in inert gas.... | 01/07/1997 |
| 5562591 | Receptacle with a transport case in a pipe A receptacle (59) is provided which includes a flask (22) surrounded by a casing (23) able to slide into a pipe by pneumatic means. A composite element (33, 40) formed of all of one piece is used to close both the openings of the flask and casing by means... | 10/08/1996 |
| 5536389 | Process and installation for the destruction of organic solutes, particularly complexing agents, present in an aqueous solution such as a radioactive effluent The invention relates to a process and an installation for the destruction of organic solutes, particularly complexing agents, present in an aqueous solution such as a radioactive effluent. According to this process, the aqueous solution undergoes electrolysis... | 07/16/1996 |
| 5533407 | Assembly for taking liquid samples in jugs sealed by screw gaps In order to automatically take samples of radioactive liquids contained in jugs (14) sealed by screw caps, an assembly is proposed which consists of a gripping module (20) for gripping and holding the jug, a module (22) for opening and closing the jugs, a... | 07/09/1996 |
| 5531964 | Automated analysis chain In order to reduce liquid effluents and solid waste in an analysis chain receiving liquid samples contained in jugs (16), the proposal is to automate all the operations performed in analysis units or boxes (10a, 10b). Moreover, when the sampling operation... | 07/02/1996 |
| 5504343 | Device for storing cylindrical objects with fast charging and discharging A device for storing cylindrical objects, such as small containers (14) containing radioactive material samples, includes one or more superimposed rotary racks (30, 30'). Each of the racks has circumferentially distributed cavities (32, 32') in which the ... | 04/02/1996 |
