Abrégé

The invention relates to novel dissymmetric N,N-dialkylamides having formula (I), wherein R represents a straight or branched alkyl group at C8 to C15. The invention also relates to a method for synthesising said N,N-dialkylamides, and to the uses of same as extractants, alone or in admixture, in order to extract uranium and/or plutonium from an aqueous acid solution or to partially or fully separate uranium from plutonium in an aqueous acid solution and, in particular, an aqueous solution resulting from dissolving spent nuclear fuel in nitric acid. The invention further relates to a method for the treatment of an aqueous solution resulting from dissolving spent nuclear fuel in nitric acid, allowing the uranium and plutonium contained in the solution to be extracted, separated and decontaminated in a single cycle, without requiring any plutonium reduction operation, and in which one of the aforementioned N,N-dialkylamides or a mixture of same is used as an extractant. The invention is suitable for use in the treatment of spent nuclear fuel, in particular that comprising uranium (e.g. UOX) or uranium and plutonium (e.g. MOX).

Classes IPC  ?

• C07C 233/05 - Amides d'acides carboxyliques ayant des atomes de carbone de groupes carboxamide liés à des atomes d'hydrogène ou à des atomes de carbone acycliques ayant les atomes d'azote des groupes carboxamide liés à des atomes d'hydrogène ou à des atomes de carbone de radicaux hydrocarbonés non substitués avec des atomes de carbone de groupes carboxamide liés à des atomes de carbone d'un squelette carboné saturé acyclique ayant les atomes d'azote des groupes carboxamide liés à des atomes d'hydrogène ou à des atomes de carbone acycliques
• C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
• C22B 60/00 - Obtention des métaux ayant un nombre atomique de 87 ou plus, c.-à-d. métaux radioactifs

Abrégé

The invention relates to a method for the treatment of an aqueous solution resulting from dissolving spent nuclear fuel in nitric acid, allowing the uranium and plutonium contained in the solution to be extracted, separated and decontaminated in a single cycle, without requiring any operation involving the reductive back-extraction of the plutonium. The invention is intended for the treatment of spent nuclear fuel comprising uranium and/or plutonium.

Classes IPC  ?

• G21C 19/46 - Procédés aqueux

Abrégé

The invention relates to an apparatus (1) for thermal denitration of a uranyl nitrate hydrate to uranium trioxide UO3. The apparatus (1) comprises a burner (114) and a reaction chamber (110) configured to carry out thermal denitration of uranyl nitrate hydrate and to form uranium trioxide UO3 in the form of particles. The apparatus also comprises a separating chamber (120) suitable for separating UO3 particles from the gases resulting from the thermal denitration carried out in the reaction chamber (110), and at least one filter (130) configured for purifying the gases. The separating chamber (120) is a decanting chamber into which the reaction chamber (110) directly opens out. The filter (130) is capable of performing the separation at a temperature greater than or equal to 350°C. The invention also relates to use of such an apparatus, to a thermal denitration process and to UO3 particles obtained by means of such a process.

Classes IPC  ?

• C01G 43/01 - OxydesHydroxydes
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• B01J 19/26 - Réacteurs du type à injecteur, c.-à-d. dans lesquels la distribution des réactifs de départ dans le réacteur est effectuée par introduction ou injection au moyen d'injecteurs
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• B01J 8/00 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés

Abrégé

The invention relates to a smoothing tool (3) configured for smoothing glass frit in a radioactive environment, in an induction-melting cold crucible. Smoothing tool (3) comprising a rod (30), a grid (50) designed to be in contact with glass frit (7) to be smoothed, and at least one vibrator (37, 55, 56) configured to make the grid (50) vibrate. The grid (50) is mechanically connected to the rod (30).

Classes IPC  ?

• G21F 9/30 - Traitements
• B65G 69/04 - Étalement des matériaux transportés sur toute la surface à chargerMise en ordre des masses de matériaux meubles
• C03B 5/00 - Fusion dans des foursFours, pour autant qu'ils soient spécialement adaptés à la fabrication du verre
• C03C 1/00 - Ingrédients généralement utilisés pour la fabrication des verres, glaçures ou émaux vitreux
• C03B 5/02 - Fusion dans des foursFours, pour autant qu'ils soient spécialement adaptés à la fabrication du verre dans des fours électriques
• B65D 88/66 - Grands réceptacles caractérisés par des moyens pour faciliter le remplissage ou le vidage en empêchant la formation de ponts par des dispositifs à vibration ou à chocs

Abrégé

The thermal solar power plant comprises a turbine (4) for generating electricity using vapor of a working fluid, a superheating assembly (8) comprising solar vapor superheaters (14, 16, 18) fluidly connected in series for superheating vapor using insolation and feeding the turbine with superheated vapor, and a heat storage assembly (10) thermally coupled to the superheating assembly (8) by at least one heat exchanger (30, 32) provided between two superheaters of the superheating assembly (8) in such manner as to take heat from superheated vapor and store heat.

Classes IPC  ?

• F03G 6/06 - Dispositifs produisant une puissance mécanique à partir d'énergie solaire avec des moyens de concentration de l'énergie solaire
• F01K 3/12 - Ensembles fonctionnels caractérisés par l'emploi d'accumulateurs de vapeur ou de chaleur ou bien de réchauffeurs intermédiaires de vapeur comportant plusieurs accumulateurs
• F22B 1/00 - Méthodes de production de vapeur caractérisées par le genre de chauffage

Abrégé

A non-human-entry method for extracting a desired subsurface material such as ore, wherein an access hole is drilled from surface downwardly to the material, a high-pressure fluid injection tool is lowered with or after the drill string to the material and injected outwardly to disaggregate the material and form a cavity, and the material is optionally ground to a desired size by a drill bit or other means to enable suction up production tubing with a carrier fluid to the surface. The injection tool and grinding means are preferably part of an integrated bottom hole assembly at the lowermost end of a drill string, which may include surveying equipment to measure the cavity dimensions at intervals during target material disaggregation to allow fluid injection adjustment to seek to achieve a desired cavity geometry. Deck cementing is optionally employed for ground support.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille
• E21C 37/12 - Autres procédés ou dispositifs d'abattage avec ou sans chargement en employant une pression hydraulique ou pneumatique dans un trou foré en injectant dans le trou foré un liquide, soit sous haute pression initiale, soit soumis ultérieurement à une haute pression, p. ex. au moyen d'impulsion, au moyen de cartouches d'explosif agissant sur le liquide
• E21B 43/29 - Préparation de suspensions de matières minérales, p. ex. en utilisant des buses
• E21B 7/00 - Procédés ou matériels particuliers pour le forage
• E21B 43/34 - Aménagements pour séparer les matériaux produits par le puits
• E21C 45/00 - Procédés hydrauliques d'exploitation minièreMonitors hydrauliques

Abrégé

The invention relates to a thermocouple (17) suspended from a part (26, 27) that can be locked onto a connecting section of the measuring stick, which comprises an opening in the form of a guiding cone (30) for inserting the thermocouple. The thermocouple is contained in a flexible cable (24) that can slide in a sheath (35) of the central compartment (16) which houses the thermocouple (17). A spring (34) can be added to lightly press the end of the thermocouple to the end of the housing thereof.

Classes IPC  ?

• G01K 1/08 - Dispositifs de protection, p. ex. étuis
• G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
• G01K 7/02 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments thermo-électriques, p. ex. des thermocouples

Abrégé

The present invention relates to a process for sintering a compacted powder of at least one oxide of a metal selected from an actinide and a lanthanide, this process comprising the following successive steps, carried out in a furnace and under an atmosphere comprising an inert gas, dihydrogen and water: (a) a temperature increase from an initial temperature Ti up to a hold temperature TP, (b) maintaining the temperature at the hold temperature TP, and (c) a temperature decrease from the hold temperature TP down to a final temperature TF, in which the P(H2)/P(H2O) ratio is such that: - 500 < P(H2)/P(H2O) ≤ 50 000, during step (a), from Ti until a first intermediate temperature Ti1 between 1000°C and TP is reached, and - P(H2)/P(H2O)≤ 500, at least during step (c), from a second intermediate temperature Ti2 between TP and 1000°C, until TF is reached. The invention also relates to a process for manufacturing a pellet of at least one oxide of a metal selected from an actinide and a lanthanide, especially a nuclear fuel pellet.

Classes IPC  ?

• C04B 35/50 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de composés de terres rares
• C04B 35/51 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de composés des actinides
• C04B 35/64 - Procédés de cuisson ou de frittage
• G21C 3/62 - Combustible céramique
• G21C 21/02 - Fabrication des éléments combustibles ou surrégénérateurs à l'intérieur de gaines non-actives

Abrégé

The invention relates to a method (120) for passivating an element made of a nickel alloy, which is intended for limiting the corrosion and the cation release of said element in contact with a liquid. The method comprises a step of applying a thermal treatment (126) to at least one surface of the element, the thermal treatment (126) being carried out at a temperature of 500°C to 900°C, in an inert atmosphere made up of at least 99.9% of an inert gas or a mixture of inert gases. The inert atmosphere is at a pressure substantially equal to atmospheric pressure, and the thermal treatment (126) is carried out during a time ranging from ten to fifty hours.

Classes IPC  ?

• C23C 8/10 - Oxydation

Abrégé

The invention relates to a laser-beam emission device (10) provided with an emission head including an optical unit (42) arranged in a generally longitudinal sheath (26), with a view to using same in contaminated environments. Said optical unit (42) includes a mirror (46) configured to deflect the initially longitudinal laser beam toward an outlet (20), thus enabling the laser beam to exit along an outlet axis (24) intersecting the longitudinal axis. The sheath (26) is configured to tightly confine the emission head such as to be impervious from dust. Thus, the emission head may be cleaned using decontamination products without the risk of damaging the optical unit (42) and the mirror thereof (46).

Classes IPC  ?

• B23K 26/10 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce avec un support fixe
• B23K 26/14 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet
• B23K 26/36 - Enlèvement de matière
• B23K 26/38 - Enlèvement de matière par perçage ou découpage
• G02B 23/26 - Instruments pour regarder l'intérieur de corps creux, p. ex. endoscopes à fibres utilisant des guides de lumière
• G02B 6/26 - Moyens de couplage optique

Abrégé

The invention proposes a device (10) for the cyclonic separation of solid particles contained in a fluid, comprising a primary cyclone chamber (12), a secondary cyclone chamber (14), an inlet channel (90) for fluid loaded with solid particles opening into the primary cyclone chamber, an outlet channel (18) for fluid cleaned of the solid particles connected to the secondary cyclone chamber, and a pipe unit (20) connecting the primary cyclone chamber to the secondary cyclone chamber and surrounded by the primary cyclone chamber. The pipe unit comprises a core (60) delimiting the secondary cyclone chamber and having at least one helical groove of which a bottom moves away from an axis (34) of the secondary cyclone chamber, moving towards the latter, and a cap (62) covering a part of the core in such a way as to delimit, with the groove, a channel (82) connecting the primary cyclone chamber to the secondary cyclone chamber.

Classes IPC  ?

• B04C 5/04 - Entrées tangentielles
• B04C 5/103 - Bâtis ou éléments des appareils, p. ex. volets ou guides
• B04C 5/107 - Parties centralesDispositifs provoquant la présence d'air à la partie centrale des hydrocyclones
• B04C 5/13 - Structure du guide pour la phase légère, p. ex. pour faire sortir la matière en spirale ou en la dispersant formé comme un capteur de tourbillon, et s'étendant à l'intérieur de la chambre du tourbillonÉvacuation du viseur de tourbillon autrement que par le haut du cycloneDispositifs de commande de l'évacuation de la phase légère
• B04C 5/26 - Arrangement multiple de ces appareils opérant en série

Abrégé

The invention relates to gels for detecting and locating radioactive surface contamination of a solid material substrate, particularly via change in the color of the gels within the visible range or via softening, i.e. fading, of the color of the gels. The invention also relates to a method for detecting and locating radioactive surface contamination of a solid material substrate that uses said gels.

Classes IPC  ?

• G01T 1/04 - Dosimètres chimiques
• G01T 1/169 - Exploration, localisation de surfaces contaminées

Abrégé

A method for treating a solid substrate comprising a support comprising, preferably consisting of, at least one oxide chosen from the oxides of a first metal chosen from the rare earths, the mixed oxides of a first metal chosen from the rare earths and at least one second metal different from the first metal, and the mixtures of an oxide of a first metal chosen from the rare earths and at least one oxide of at least one second metal different from the first metal, said support comprising at least one surface on which there are deposited particles consisting of at least one noble metal, in order to separate the first metal, the optional second metal, and the noble metal which constitutes the particles, said method comprising a step of selectively dissolving the support, during which the substrate is brought into contact with a dissolving solution comprising at least one mineral acid and at least one reducing agent for reducing the rare earth or rare earths of the support chosen from natural antioxidant molecules such as ascorbic acid, catechol, gallic acid and the mixtures of same, thereby obtaining a solution containing the first metal and the possible second metal in the dissolved state, in which there are suspended the particles consisting of the noble metal.

Classes IPC  ?

• C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
• C22B 59/00 - Obtention des métaux des terres rares

Abrégé

The invention relates to a method of conditioning, by embedding in a cementitious matrix, a nuclear waste comprising magnesium metal and at least one material selected from graphite and steels, which method comprises the following steps: embedding the waste using a cementitious paste obtained by mixing a composition comprising a powder of a binder selected from hydraulic cements, vitrified blast-furnace slags and mixtures thereof, and an aqueous mixing solution; then - leaving the cementitious paste to harden in order to form the cementitious matrix; and is characterized in that the aqueous mixing solution comprises at least 1 mol/L of a strong base. The invention also relates to a composition suitable for being used in this conditioning method and also to a conditioning package obtained by said method. Applications: conditioning of waste from UNGG (for "Uranium Naturel - Graphite - Gaz carbonique [natural uranium - grapite - carbon dioxide]) or MAGNOX (for Magnesium Non OXidizing) nuclear reactors with a view to the storage thereof.

Classes IPC  ?

• G21F 9/30 - Traitements
• G21D 1/00 - Détails des installations à énergie nucléaire
• G21F 9/34 - Moyens de se débarrasser des résidus solides
• C04B 28/00 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates
• C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
• C04B 7/00 - Ciments hydrauliques
• C04B 18/04 - DéchetsRésidus

Abrégé

An activation method for activating U3O8 with a view to converting said uranium oxide into hydrated UO4 by means of a reaction with hydrogen peroxide H2O2, which involves carrying out the following successive steps: a) preparing an aqueous suspension containing a U3O8 powder and hydrogen peroxide; b) bringing the aqueous suspension containing a U3O8 powder and hydrogen peroxide into contact with ozone, thereby obtaining an aqueous suspension of an activated U3O8 powder; c) optionally, separating the activated U3O8 powder from the aqueous suspension. A method for converting U3O8 into hydrated UO4 of formula UO4, nH2O in which n is 2 or 4, comprising a least a step of adding hydrogen peroxide H2O2 to the aqueous suspension of an activated U3O8 powder obtained at the end of step b) of the activation method, or to an aqueous suspension prepared by placing the activated U3O8 powder obtained at the end of step c) of the activation method in suspension in water.

Classes IPC  ?

• C01G 43/01 - OxydesHydroxydes
• C01G 43/00 - Composés de l'uranium
• C01B 15/047 - Peroxydes métalliques ou leurs peroxyhydratesSuperoxydesOzonides de métaux lourds

Abrégé

The invention relates to a process for preparing a powder of an oxide of at least one metal, each metal having an oxidation number of between (III) and (VI). This process comprises, successively and in this order: (a) the reaction, with a compound comprising a hydroxide, of an aqueous solution comprising, for each metal, at least one salt of the cation of said metal, (b) the separation of the precipitate obtained, (c) the bringing of the separated precipitate into contact with an organic protic polar solvent, (d) the elimination of the organic protic polar solvent by drying of the precipitate under vacuum. The invention also relates to a process for manufacturing a pellet of an oxide of at least one metal and also to the powder and pellet obtained according to these processes and to the uses thereof.

Classes IPC  ?

• C01G 43/025 - Dioxyde d'uranium
• C01G 56/00 - Composés des éléments transuraniens
• G21C 3/62 - Combustible céramique

Abrégé

A non-human-entry method for extracting a desired subsurface material such as ore, wherein an access hole is drilled from surface downwardly to the material, a high-pressure fluid injection tool is lowered with or after the drill string to the material and injected outwardly to disaggregate the material and form a cavity, and the material is optionally ground to a desired size by a drill bit or other means to enable suction up production tubing with a carrier fluid to the surface. The injection tool and grinding means are preferably part of an integrated bottom hole assembly at the lowermost end of a drill string, which may include surveying equipment to measure the cavity dimensions at intervals during target material disaggregation to allow fluid injection adjustment to seek to achieve a desired cavity geometry. Deck cementing is optionally employed for ground support.

Classes IPC  ?

• E21C 37/12 - Autres procédés ou dispositifs d'abattage avec ou sans chargement en employant une pression hydraulique ou pneumatique dans un trou foré en injectant dans le trou foré un liquide, soit sous haute pression initiale, soit soumis ultérieurement à une haute pression, p. ex. au moyen d'impulsion, au moyen de cartouches d'explosif agissant sur le liquide
• E21B 43/29 - Préparation de suspensions de matières minérales, p. ex. en utilisant des buses
• E21B 43/40 - Séparation associée à la réinjection de matériaux séparés

Abrégé

This probe for measuring the conductivity of a fluid, comprising: an envelope (20) delimiting internally a measurement chamber (44), the envelope (20) exhibiting a first front aperture (42) surrounded by a first flange (22); a first electrode (24) engaged in the measurement chamber (44) through the first front aperture (42); a second flange (26) integral with the first electrode (24), the second flange (26) being arranged opposite the first flange (22) and exhibiting a second front aperture (56) in coincidence with the first front aperture (42); a second electrode (28) engaged in the measurement chamber (44) through the first front aperture (42) and the second front aperture (56). A third flange (30) integral with the second electrode (28) is arranged opposite the second flange (26), and a rigid fixing (32) holds the first, second and third flanges (22, 26, 30) to one another.

Classes IPC  ?

• G01N 27/07 - Structure des récipients de mesureÉlectrodes pour ces récipients
• G01R 27/22 - Mesure de la résistance de fluides

Abrégé

The invention relates to an energy storage device comprising a plurality of electrolytic cells (5) and a four-quadrant electrical inverter/charger (7). Each electrolytic cell (5) comprises a device (51) for recycling the gaseous hydrogen released in the cathode chamber, towards the anode chamber.

Classes IPC  ?

• H01M 8/18 - Éléments à combustible à régénération, p. ex. batteries à flux REDOX ou éléments à combustible secondaires
• H01M 10/36 - Accumulateurs non prévus dans les groupes
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires

Abrégé

The invention relates to a process for the synthesis of a mixed peroxide or hydroxo-peroxide of an actinyl and of at least one cation X1, in which the actinyl is a uranyl or a neptunyl and said at least one cation X1 is a doubly, triply or quadruply charged cation of a metal. This process comprises the reaction, in a solvent, of a salt of said at least one cation X1 with a compound C2 chosen from the mixed peroxides and hydroxo-peroxides of the actinyl and of at least one singly charged cation X2, as a result of which the compound C2 is converted into the peroxide or the hydroxo-peroxide by replacement of said at least one cation X2 with said at least one cation X1. It also relates to a process for the synthesis of a mixed oxide of an actinide chosen from uranium and neptunium, and of at least one metal capable of forming a doubly, triply or quadruply charged cation, which implements the preceding synthesis process. It also relates to a mixed peroxide or hydroxo-peroxide of an actinyl and of at least one doubly, triply or quadruply charged cation of a metal, and also to the use thereof for preparing a mixed oxide of an actinide and of at least this metal. Uses: manufacture of mixed oxides of actinides suitable for use in the manufacture of nuclear fuel pellets or of transmutation targets, decontamination of effluents contaminated with radionuclides from nuclear facilities, etc.

Classes IPC  ?

• C01B 15/047 - Peroxydes métalliques ou leurs peroxyhydratesSuperoxydesOzonides de métaux lourds
• C01G 43/00 - Composés de l'uranium
• C01G 56/00 - Composés des éléments transuraniens
• C01F 11/00 - Composés du calcium, du strontium ou du baryum
• C01F 17/00 - Composés des métaux des terres rares

Abrégé

The invention relates to a method for processing spent nuclear fuel which method involves a step of decontaminating the uranium (VI) into one or more actinides (IV) and, more specifically, into neptunium and/or plutonium, by complexing this (these) actinide(s) (IV). This method involves a step of decontaminating the uranium (VI) into at least one actinide (IV), which decontamination step involves at least one operation of extracting actinide (IV) out of an organic phase, not miscible in water, and in which phase the uranium (VI) and the actinide (IV) are present, by bringing the organic phase into contact with an aqueous phase containing nitric acid and at least one complexing agent which complexes the actinides (IV) more strongly than uranium (VI), then separating the organic phase from the nitric aqueous phase and is characterized in that said at least one complexing agent is a diglycol amide. Applications: the processing of spent nuclear fuels.

Classes IPC  ?

• G21C 19/44 - Retraitement des combustibles irradiés des combustibles solides irradiés
• G21C 19/46 - Procédés aqueux
• G21F 9/06 - Traitements
• G21F 9/30 - Traitements

Abrégé

The invention relates to a method (110) for manufacturing a treated optical fiber (5) for temperature sensor. Said method includes the following steps: a) producing (120) an optical fiber (125) made of pure silica or silica doped with one or more element(s) selected from among fluorine and nitrogen; b) imprinting (130), using a femtosecond laser, at least one Bragg grating onto the optical fiber so as to produce an imprinted fiber (135), the Bragg grating longitudinally extending into one portion of the imprinted fiber and being suitable for reflecting light waves propagating along the imprinted optical fiber, the laser having power greater than or equal to 450 mW; and c) annealing (140) at least the imprinted fiber portion so as to produce the treated optical fiber. The invention also relates to the use of one such treated optical fiber in a temperature sensor.

Classes IPC  ?

• G02B 6/02 - Fibres optiques avec revêtement

Abrégé

The invention relates to an energy storage device comprising a plurality of electrolytic cells (5) and a four-quadrant inverter/charger (7). In each electrolytic cell (5), the negative electrode (21) and the positive electrode (15) are disposed facing one another, said electrolytic cell (1) comprising a device (23) for rotating the negative electrode (21) in relation to the positive electrode (11) about a rotation axis (X).

Classes IPC  ?

• C25D 5/04 - Dépôt avec électrodes mobiles
• C25D 17/12 - Forme ou configuration
• H01M 8/18 - Éléments à combustible à régénération, p. ex. batteries à flux REDOX ou éléments à combustible secondaires
• H01M 10/36 - Accumulateurs non prévus dans les groupes

Abrégé

The invention relates to an optical system for determining, in three dimensions, the velocity profile and minimum concentration of particles in a flow, the system being characterised in that it comprises a first acquisition chain (100) comprising a first acquisition lens (130), a first photosensitive sensor (110), and a first shutter (120) formed by an opaque disk having at least two openings (121) in an arc, which can allow the transmission of light beams towards said first photosensitive sensor (110), said openings (121) being inscribed in the same circle.

Classes IPC  ?

• G01N 15/06 - Recherche de la concentration des suspensions de particules

Abrégé

The invention relates to a process for preparing a powder of a solid solution of uranium dioxide and of a dioxide of at least one actinide and/or lanthanide element comprising a step of combustion of a solution comprising uranyl nitrate and at least one nitrate of the other actinide and/or lanthanide element and a nitrogen-containing fuel used in a specific predetermined amount in order to form, at the end of this step, said solid solution.

Classes IPC  ?

• C01G 43/00 - Composés de l'uranium
• C01G 56/00 - Composés des éléments transuraniens
• G21C 3/62 - Combustible céramique

Abrégé

The invention relates to an optical fibre (100) for detecting and/or quantitative measurement of hydrogen, comprising a fibre core (110) and at least one optical cladding (120) surrounding the core (110), at least one of the core (110) and the optical cladding (120) being made mainly of silica glass. The optical fibre (100) comprises palladium in metal form included in at least one fibre portion made mainly of silica glass, said portion being selected from the core (110) and the optical cladding (120). The invention also relates to a process for manufacturing such an optical fibre (100), to the use of this optical fibre (100), and to a system for detecting and/or quantitative measurement of hydrogen comprising such an optical fibre (100).

Classes IPC  ?

• G02B 6/02 - Fibres optiques avec revêtement
• G01N 21/77 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique
• G01N 21/65 - Diffusion de Raman
• C03B 37/012 - Fabrication d'ébauches d'étirage de fibres ou de filaments

Abrégé

The invention relates to a welding device (10) for welding the opening (16) of a plastic bag (12) in order to seal same hermetically, which comprises: a lower jaw (18) and an upper jaw (20) between which the bag (12) is clamped; at least one heating wire (22); and means (30) for clamping the upper jaw (20) against the lower jaw (18) which comprise a plurality of magnetic elements (32) with permanent magnets, and in which each magnetic element (32) comprises a first stationary permanent magnet (34) and a second permanent magnet (36) which is mounted so as to be movable relative to the first permanent magnet (34) between a locking position in which the combination of the magnetic fields produced by the two permanent magnets (34, 36) produces a high-intensity magnetic field in the upper jaw (20) and a released position in which the combination of the magnetic fields produced by the two permanent magnets (34, 36) produces a low-intensity magnetic field in the upper jaw (20), allowing an operator easily to separate the two jaws after welding the bag.

Classes IPC  ?

• B29C 65/22 - Fil chauffé
• B65B 51/10 - Application ou production de chaleur ou de pression ou les deux à la fois
• B29C 65/74 - Assemblage d'éléments préformésAppareils à cet effet par soudage et découpage

Abrégé

The method according to the invention makes it possible to use a rather small facility to incinerate, melt and vitrify mixed waste (30) introduced into a reactor (10), using a basket (18) which in turn passes through an airlock (12). Plasma torches (14) burn all of the waste (30) contained in the basket (18). Said waste is then lowered into a molten bath of a furnace (20) with an inductor (24) comprising a container forming a crucible (23). The facility is completed by a combustion gas treatment chain. The furnace (20) can be disassembled, after a treatment series of several baskets (18) of waste (30), to disassemble the crucible-forming container (23) from the furnace (20). The invention is applicable to the treatment of various radiologically contaminated and/or toxic mixed waste.

Classes IPC  ?

• G21F 9/30 - Traitements
• C03B 1/00 - Préparation des charges
• F23G 5/32 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres les déchets ou les combustibles pauvres étant soumis à un mouvement tourbillonnant, p. ex. incinérateurs cycloniques
• F23G 7/00 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets particuliers ou de combustibles pauvres, p. ex. des produits chimiques
• F27B 14/06 - Fours à creusetsFours à bassin chauffés électriquement, p. ex. creusets à induction, avec ou sans une autre source de chaleur
• G21F 9/32 - Traitements par incinération

Abrégé

The assembly comprises: a source (3) generating a flow to be purified (5); a solar evaporation unit (7); a transfer duct (9); a device (11) for heating the transfer duct (9); and a mechanical ventilation device (13) for circulating air inside the solar evaporation unit (7).

Classes IPC  ?

• C02F 1/14 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par chauffage par distillation ou évaporation utilisant l'énergie solaire
• B01D 1/00 - Évaporation
• C02F 103/08 - Eau de mer, p. ex. pour le dessalement
• C02F 103/10 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de carrières ou d'activités minières

Abrégé

The present invention relates to a tool (1) for the manufacture of calibrated fissures in a workpiece (30) having a body (32) delimited by two ends (31, 33), characterized in that this tool comprises: a supporting structure (20) comprising a means (21) able to accept and hold a first end (33) of said workpiece (30) in place; an expander (10) positioned between the supporting structure (20) and the second end (31) of the workpiece (30), the expander (10) comprising a first through-orifice (12) through which the body (32) of the workpiece (30) can pass, said expander (10) being made of a material that has a co-efficient of expansion higher than the co-efficient of expansion of the supporting structure (20) and of the workpiece (30) so that the expander (10) can apply a strain to the second end (31) of said workpiece (30) through expansion of this expander if the temperature increases.

Classes IPC  ?

• G21C 17/00 - SurveillanceTests
• G01M 3/00 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide
• G01M 3/20 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des révélateurs particuliers, p. ex. teinture, produits fluorescents, produits radioactifs
• G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes

Abrégé

System for analysing, by laser induced plasma spectroscopy, the composition of the surface layer of a material and for taking samples with a view to performing complementary analyses or examining this superficial layer, and method related thereto. The system comprises a single pulse laser (6), for generating a pulse laser beam, able to interact with the superficial layer of the material and produce a plasma on the surface of the material (4); a device (10, 12) for focusing the laser beam onto the surface of the material; a device (18, 20) for collecting the light emitted by the plasma; and a device (22) for analysing the spectrum of the collected light and for determining the elementary composition (nature and relative concentration of the elements) of the superficial layer from this spectral analysis. According to the invention, it furthermore comprises a device (30, 32, 34) for sucking up and collecting particles representative of the superficial layer, extracted from the latter, under the effect of the laser beam, with a view to performing qualitative or quantitative complementary analyses or examininations on the basis of said particles.

Classes IPC  ?

• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01N 1/22 - Dispositifs pour prélever des échantillons à l'état gazeux
• G01N 1/04 - Dispositifs pour prélever des échantillons à l'état solide, p. ex. par coupe à l'outil

Abrégé

According to the invention, which is especially applicable in high-energy physics, the signals supplied by the device (12) are collected over pre-defined periods until a pre-defined total measuring time is reached, a histogram of amplitudes is formed from the collected signals, the positions of two consecutive peaks, measurable on the histogram, are determined, and an error signal is produced, equal to the difference between the two peaks, which is used to adjust the voltage supplying the device, in such a way as to maintain the difference equal to a pre-defined nominal value.

Classes IPC  ?

• G01T 1/24 - Mesure de l'intensité de radiation avec des détecteurs à semi-conducteurs
• G01T 1/40 - Stabilisation des spectromètres

Abrégé

According to the invention, which is especially applicable in high-energy physics, an energy range and a dosage type H are selected, a radiation detector (14) of a given type is used, spectra measured by the detector are established for various radiations of the given type, the energies of which are within the selected range and the respective dosages of which are known, and on the basis of the spectra, a weighting function is established, i.e. a correspondence between an average dosage increment and an average energy, stored in the detector. This allows a person provided with a dosimeter identical to the detector to know, at all times, the average absorbed dosage flow expressed in the quantity H.

Classes IPC  ?

• G01T 1/02 - Dosimètres

Abrégé

The invention relates to a device (1) for measuring the radiological activity deposited in a sea bed, comprising a sealed case (20) for a radiological detector (2), means (4) forming a truncated cone, containing a material suitable for having, passing therethrough, radiation to be measured by said radiological detector (2) comprising a small base (44) and a large base (42), the latter forming a surface (42) for letting in the radiation to be measured, said cone being sealingly assembled to said case, the small base (44) being arranged on the inlet surface side of the detector, the large base (42) being arranged opposite the sea bed.

Classes IPC  ?

• G01T 7/00 - Détails des instruments de mesure des radiations

Abrégé

The invention relates to an induction melting furnace comprising shell (7) and a lower sole (11) forming the main part of the structure. In addition, the furnace comprises a removable inner crucible (1) formed by an inner layer (4) that is resistant to heat and to the aggressive nature of the molten bath (20), an outer layer (6) defining the crucible, and an intermediate insulating layer (5). The crucible (1) is a single-use crucible and can be stored, together with its charge, in a suitable container. Heat losses are low, even if the shell (7) is cooled. In addition, stresses due to differential thermal expansions are also very low.

Classes IPC  ?

• F27B 14/06 - Fours à creusetsFours à bassin chauffés électriquement, p. ex. creusets à induction, avec ou sans une autre source de chaleur
• F27B 14/10 - Creusets
• F27B 14/14 - Aménagement des dispositifs de chauffage
• F27D 11/06 - Chauffage par induction, c.-à-d. dans lequel le matériau à chauffer ou son contenant, ou bien les éléments incorporés dans celui-ci, constitue le secondaire d'un transformateur

Abrégé

The bin of the invention can be used to incinerate waste for a period of more than fifteen minutes in an incinerator without the waste being pre-melted, in particular as it is being inserted into the incinerator. The bin is mainly formed by a fibreglass casing (10) and is preferably reinforced with a lightweight metal structure (12) positioned outside or inside the casing or built into same. The assembly is topped with a gripping handle (14) and the upper portion of the assembly is stiffened by a metal tube (16) to which the lightweight metal structure (12) is secured, with a base formed by a drip pan (18) being secured to the base of the lightweight metal structure (12). The invention is suitable for the incineration of toxic waste.

Classes IPC  ?

• G21F 9/14 - Traitements par incinérationTraitements par calcination, p. ex. dessiccation
• F23G 5/08 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres comportant un chauffage supplémentaire
• G21F 9/32 - Traitements par incinération
• B29D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe

Abrégé

The invention relates to a method for sorting, in a continuous flow, contaminated materials (100), which includes: conveying materials (100) from a point (A) to a point (B) by means of a conveyor (120); measuring the radioactive activity, by means of a first sensor (140), between the points (A) and (B) on the top surface (FSUP) of the first conveyor (120); and sorting the materials (100) by means of a sorting device (130). Said method is essentially characterized by: measuring the radioactive activity of the contaminated material by means of a second sensor (141), either on the top surface (FSUP) of the conveyor (120) and upstream from the point (A), or below the bottom surface (FINF) of said conveyor; calculating a differential measurement between a measurement from the second sensor (141) and from the first sensor (140); and restricting the sorting to the comparison between a threshold value and the measurement from the first sensor (140) or the differential measurement.

Classes IPC  ?

• B07C 5/346 - Tri en fonction d'autres propriétés particulières selon les propriétés radioactives

Abrégé

The present invention relates to a system (100) for the in-line characterisation of corrosion products in a cooling system of a nuclear reactor, said characterisation system having a tube (10) connected to the cooling system of the reactor in which the coolant circulates, the system comprising at least two filtering means (13, 14, 15) in series, the downstream filtering means having a smaller pore size than the filtering means located upstream, the filtering means (13, 14, 15) being suitable for the coolant to pass therethrough; differential pressure sensors (16) combined with each of the filtering means (13, 14, 15) making it possible to determine in-line the obstruction rate of each of the filtering means.

Classes IPC  ?

• B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
• G01N 15/06 - Recherche de la concentration des suspensions de particules

Abrégé

The present invention relates to a system (100) for characterizing products of corrosion which are present in a nuclear reactor cooling circuit, said characterization system having a pipe (20) connected to the reactor cooling circuit (1) through which the coolant flows, the system comprising at least two filtration means (13, 14, 15) in series, the downstream filtration means having a smaller pore size than the filtration means situated upstream, the filtration means (13, 14, 15) being able to have the cooling fluid passed through; differential-pressure sensors (16) associated with each of the filtration means make it possible to determine the extent to which each of the filtration means is plugged; a temperature-regulating means (22, 23) regulating the temperature of said liquid flowing through the pipe (20).

Classes IPC  ?

• B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
• G01N 15/06 - Recherche de la concentration des suspensions de particules
• G21C 17/02 - Dispositifs ou dispositions pour la surveillance du réfrigérant ou du modérateur

Abrégé

The invention relates to a device and to a method for transporting powder made up of faceted particles on a vibrating conveyor surface (1) inclined by an angle Θ, in which method and device - Ra ≤ 0.2 μm, where Ra is the arithmetic mean deviation of the conveying surface (1); - θ ≤ 2/3 α, where α is the angle of friction of said powder on said conveying surface (1); - the vibrations are generated in the plane of said conveying surface (1) and in a direction (y) perpendicular or substantially perpendicular to the direction (x) of greatest gradient of the conveying surface (1) and have a frequency comprised between 5 Hz and 2kHz and an acceleration in excess of 1g.

Classes IPC  ?

• B30B 15/30 - Alimentation des presses en matériau

Abrégé

This method comprises a step of studying the weld (10) metallurgically; a step of dividing the weld (10) into a plurality of theoretical blocks and of jointly determining an elastic Hooke tensor for each theoretical block; a step of simulating by calculation the propagation of at least one incident ultrasound wave (73) through the weld (10); a step of simulating at least one reference diffracted ultrasound wave; a step of emitting at least one incident ultrasound wave (73) into the weld (10); a step of measuring each diffracted ultrasound wave (75); and a step of comparing each reference diffracted ultrasound wave with each measured diffracted ultrasound wave (75).

Classes IPC  ?

• G01N 29/44 - Traitement du signal de réponse détecté
• G01N 29/04 - Analyse de solides

Abrégé

The invention relates to an anionically conductive electrolyser comprising an electrochemical cell (10) formed by a solid electrolyte (13) formed by a ceramic; a first electrode (11) forming the anode of said electrochemical cell (10); and a second electrode (12) forming the cathode of said electrochemical cell (10), said solid electrolyte (13) being arranged between said first electrode (11) and said second electrode (12). Said electrolyser is characterised in that said solid electrolyte (13) consists of zirconium oxide doped with erbium oxide.

Classes IPC  ?

• C25B 13/04 - DiaphragmesÉléments d'espacement caractérisés par le matériau
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau

Abrégé

The invention relates to a method for breaking down, by oxidation, at least one organic compound, such as a carboxylic acid, in a liquid medium at a high concentration, i.e. no lower than 0.05 mol/L, in which the liquid medium is placed in contact, at atmospheric pressure and at room temperature, with a gas that contains oxygen, in the presence of a solid catalyst that enables the breakdown of the organic compound by the oxygen, and the liquid medium is simultaneously subjected to ultrasonic waves.

Classes IPC  ?

• C02F 1/36 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout au moyen d'oscillations mécaniques par des vibrations ultrasonores
• C02F 1/72 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation
• C02F 1/74 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation au moyen de l'air
• C02F 101/30 - Composés organiques

Abrégé

The present invention relates to a device for handling cases and boxes contained in the cases, having a housing intended to receive a case, said housing being closed at a first longitudinal end and open at a second longitudinal end, a holding device (14) mounted in the region of the second end of the housing, said holding device (14) having two clamping jaws, said clamping jaws applying a clamping force to the case (E), an actuator for opening and closing said jaws, two abutment jaws (36, 38), each (36, 38) of which is carried by a clamping jaw and being articulated freely about and with respect to the clamping jaw, springs (40) connecting said abutment jaws (36, 38) such that the opening of the clamping jaws causes the opening of the abutment jaws (36, 38) and the abutment jaws (36, 38) may be opened independently of the clamping jaws.

Classes IPC  ?

• B25J 15/00 - Têtes de préhension

Abrégé

A position-indexed storage device comprising a support (1) and a basket (2) mounted on the support (1), the basket (2) comprising a plurality of cells (4) distributed about a longitudinal axis (X), the basket (2) comprising a central passage (8) of longitudinal axis (X), the support comprising a shaft (26) of longitudinal axis (X), the shaft (26) being housed in the passage (8) such that a relative movement between the basket (2) and the support (1) along the longitudinal axis (X) is allowed, and mechanical movement means for moving the basket relative to the support by a given angle about the longitudinal axis (X) are supported by the inner surface of the passage (8) and by the outer surface of the shaft (26), said mechanical movement means being activated in each cycle comprising a relative movement of the basket (2) and the support (1) away from and towards each other along the longitudinal axis (X).

Classes IPC  ?

• G21F 5/06 - Détails ou accessoires des récipients
• G21F 5/14 - Dispositifs spécialement adaptés à la manipulation de récipients ou de barils, p. ex. dispositifs de transport
• G21F 7/00 - Cellules ou chambres blindées
• G21F 7/06 - Combinaison structurelle avec un appareil télécommandé, p. ex. avec manipulateurs
• B65G 1/04 - Dispositifs d'emmagasinage mécaniques

Abrégé

This solar concentrator (6) comprises at least one row (12) of reflectors (14) comprising mirrors (34), said row (12) extending along a longitudinal direction (L), the reflector (14) of said row (12) being pivotally supported with respect to the ground about a pivot axis (A-A), said row comprising at least a first reflector (14) and a second reflector (14) and a connecting arrangement (42, 44) which connects adjacent longitudinal ends (26) of the first and second reflector assemblies (14), the connecting arrangement (42, 44) allowing a relative movement between the first and second reflector assemblies (14).

Classes IPC  ?

• F24J 2/16 - à surfaces planes
• F24J 2/54 - spécialement adapté pour un mouvement de rotation
• F24J 2/46 - Parties constitutives, détails ou accessoires de collecteurs de chaleur solaire
• F24J 2/10 - munis de réflecteurs comme éléments de concentration

Abrégé

The invention relates to a reflector panel (20) for a solar power plant, comprising: - a front reflective sheet (22), - a back sheet (24), the front (22) and back (24) sheets defining a cavity (34) between them, and - an inner frame structure (26), extending in the cavity (34). The inner frame structure (26) comprises at least two elongated beams (40) parallel to and spaced apart from one another, each beam (40) extending along each sheet (22, 24) and keeping the sheets (22, 24) spaced apart from one another, the beam (40) having a constant thickness between the sheets (22, 24). The invention also relates to a manufacturing method thereof, and a reflector assembly comprising such a reflector panel.

Classes IPC  ?

• F24S 23/70 - Agencements pour concentrer les rayons solaires pour les collecteurs de chaleur solaire avec des réflecteurs
• F24S 23/74 - Agencements pour concentrer les rayons solaires pour les collecteurs de chaleur solaire avec des réflecteurs avec des surfaces réfléchissantes en forme d’auge ou sous forme cylindro-parabolique
• F24S 23/77 - Agencements pour concentrer les rayons solaires pour les collecteurs de chaleur solaire avec des réflecteurs avec des surfaces réfléchissantes planes

Abrégé

The invention relates to the use of a mixture comprising erbium and praseodymium as a radiation attenuating composition, i.e. as a composition that can attenuate ionising radiation, in particular X- and gamma-type electromagnetic radiation. The invention also relates to a radiation attenuating material comprising an erbium- and praseodymium-based composition, as well as a protective article which provides group or individual protection against ionising radiation and comprises said material. The invention is suitable for use in nuclear medicine (scintigraphy, radiotherapy, etc.) radiology, medical imaging, the nuclear industry, etc.

Classes IPC  ?

• G21F 1/02 - Sélection de matériaux de blindage uniforme
• G21F 1/10 - Substances organiquesDispersions dans des supports organiques
• G21F 3/02 - Habillement

Abrégé

The present invention relates to a method for formulating a ceramic powder for producing a proton-conducting electrolytic membrane (12) for an electrochemical cell (10), said method comprising the following steps: forming a suspension of a previously synthesized, unprocessed ceramic powder in a solvent having a hydrogen potential greater than 7 so as to produce a slip, said unprocessed ceramic powder comprising agglomerates consisting of a plurality of ceramic grains; crushing said agglomerates contained in said slip so as to reduce said agglomerates; and drying said slip so as to mechanically separate said agglomerates of said solvent and recover said dried agglomerates.

Classes IPC  ?

• C04B 35/462 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxydes de titane ou de titanates à base de titanates
• C04B 35/48 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxydes de zirconium ou d'hafnium ou de zirconates ou d'hafnates
• C04B 35/50 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de composés de terres rares
• C04B 35/634 - Polymères
• C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
• B01D 71/02 - Matériaux inorganiques
• C25B 13/04 - DiaphragmesÉléments d'espacement caractérisés par le matériau
• H01M 8/12 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé
• B01D 67/00 - Procédés spécialement adaptés à la fabrication de membranes semi-perméables destinées aux procédés ou aux appareils de séparation

Abrégé

The invention relates to a decontamination gel consisting of a colloidal solution including: at least one inorganic viscosity-increasing agent, at least one agent for rapidly altering the viscosity, which, when exposed to at least one stimulus, causes a rapid and large variation in the viscosity of the gel, at least one active decontamination agent, at least one surfactant, and optionally at least one superabsorbent polymer, the remainder consisting of a solvent. The invention also relates to a method for decontaminating a part, in particular a part that is small and/or has complex shape, by coating same with a film of said gel.

Classes IPC  ?

• A61L 2/232 - Procédés ou appareils de désinfection ou de stérilisation de matériaux ou d'objets autres que les denrées alimentaires ou les lentilles de contactAccessoires à cet effet utilisant des substances chimiques des substances solides, p. ex. des granules, des poudres, des blocs, des comprimés en couches ou revêtues
• A61L 2/18 - Procédés ou appareils de désinfection ou de stérilisation de matériaux ou d'objets autres que les denrées alimentaires ou les lentilles de contactAccessoires à cet effet utilisant des substances chimiques des substances liquides

Abrégé

Device for handling objects in a glove box comprising a carriage (2) for supporting the items that are to be handled, a base (6) with respect to which the carriage (2) can move along a horizontal axis (X), means of driving the carriage (2) along the axis (X), these drive means comprising an electric motor (14) arranged in such a way that its drive shaft is orthogonal to the axis (X) and projects away from the base (6), a transmission shaft (18) parallel to the motor (14), a rack (22) fixed to the base (6) along the axis (X) and a pinion (24) in direct engagement with the transmission shaft (18) and meshing with the rack (22), a drive belt (20) mechanically connecting the drive shaft of the motor (14) to the transmission shaft (18), the electric motor (14) being disengageable and the carriage being movable by hand along the axis (X).

Classes IPC  ?

• B25J 9/02 - Manipulateurs à commande programmée caractérisés par le mouvement des bras, p. ex. du type à coordonnées cartésiennes
• B25J 21/02 - Boîtes à gants, c.-à-d. enceintes dans lesquelles les manipulations sont exécutées par des mains humaines dans des gants faisant partie de la paroi de l'enceinteGants de boîtes à gants
• G21F 7/04 - Boîtes à gants blindées

Abrégé

The invention relates to the field of packaging of radioactive waste by cementing. More specifically, the invention relates to the use of crystalline silica, mixed with cement powder, to reduce the heating of the cement paste caused by the hydration of said powder, during a process of packaging of radioactive waste. The invention also relates to a formulation for the packaging of radioactive waste by cementing, which comprises such silica. The invention further relates to a method for packaging radioactive waste implementing said formulation, and to a package for packaging of radioactive waste which is obtained by this method. Applications: processing of low- and medium-activity waste produced downstream of the nuclear fuel cycle.

Classes IPC  ?

• C04B 14/06 - QuartzSable
• C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
• C04B 28/08 - Ciments de scories

Abrégé

The present invention relates to an acoustic sensor (10) for measuring the linear movement of an internal structure (20) of a nuclear reactor using sound waves, comprising: an electro-acoustic transducer (14) capable of emitting said sound waves; and a waveguide (5) capable of guiding said sound waves emitted by said transducer (14) toward a measurement area of the internal structure (20), wherein said acoustic sensor (10) is characterized in that said waveguide (5) is capable of guiding the reflected wave and said waveguide (5) is secured to said measurement area (20) and arranged so as to be capable of extending or retracting in accordance with the movement of said internal structure (20) of the nuclear reactor.

Classes IPC  ?

• G01B 17/00 - Dispositions pour la mesure caractérisées par l'utilisation de vibrations infrasonores, sonores ou ultrasonores

Abrégé

The direct solar steam generator (2) is of the type comprising a solar evaporator (4) having an evaporator circuit (12) for circulation of a working fluid, an evaporator inlet pipe (8) for supplying fluid to the evaporator circuit (12) and an evaporator outlet pipe (10) for collecting the working fluid exiting the evaporator circuit (12), and a solar concentrator (6) for concentrating solar energy towards the evaporator circuit (12). According to one aspect if the invention, the steam generator (2) comprises a fluid arrangement (26) configured to allow forming a static liquid seal in the outlet pipe (10) using the working fluid.

Classes IPC  ?

• F24J 2/07 - Récepteurs à haute température, p.ex. pour centrales solaires
• F24J 2/24 - le fluide vecteur circulant à travers des conduites tubulaires absorbant la chaleur
• F24J 2/16 - à surfaces planes
• F24J 2/46 - Parties constitutives, détails ou accessoires de collecteurs de chaleur solaire
• F01K 13/00 - Dispositions générales ou processus généraux de fonctionnement des installations complètes d'ensembles fonctionnels de machines à vapeur
• F22B 1/00 - Méthodes de production de vapeur caractérisées par le genre de chauffage

Abrégé

The present invention relates to a proton-conductive electrochemical cell (10), comprising an electrolytic membrane (13) made of a ceramic and an electrode (11, 12) made of a cermet, said electrochemical cell (10) being obtained directly by a method of co-sintering a ceramic layer, capable of forming the electrolytic membrane (13), and a cermet layer, capable of forming the electrode (11, 12), in a sintering tool at a sintering temperature of the ceramic that makes it possible to render said ceramic layer, capable of forming the electrolyte (13), gas-tight, wherein said cell (10) is characterised in that said cermet consists of the mixture of a ceramic and an electronically conductive passivatable alloy including at least 40 mol % chromium capable of forming a passive layer, the nature and the chromium content of said passivatable alloy enabling said electrochemical cell to be co-sintered with a membrane densification of more than 90% without melting said alloy.

Classes IPC  ?

• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 9/10 - Cellules comportant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes comprenant une membrane d'échange d'ions dans ou sur laquelle est incrusté du matériau pour électrode
• C25B 11/04 - ÉlectrodesLeur fabrication non prévue ailleurs caractérisées par le matériau
• H01M 8/12 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé
• H01M 4/88 - Procédés de fabrication

Abrégé

The present invention relates to a method for treating CO2 by electrochemical hydrogenation, said method comprising: a step of transferring heat from a heating means (160) towards a proton-conductive electrolyser (110) such that said electrolyser (110) reaches an operating temperature suitable for electrolysing steam; a step of feeding the CO2 produced by said heating means (160) at the cathode of the electrolyser; a step of feeding the steam at the anode; a step of oxidising the steam at the anode; a step of generating protonated species in the membrane with proton conduction; a step of migrating said protonated species into said proton-conductive membrane; a step of reducing said protonated species on the surface of the cathode into reactive hydrogen atoms; and a step of hydrogenating the CO2 on the surface of the cathode of the electrolyser (110) by means of said reactive hydrogen atoms, said hydrogenation step enabling the formation of CxHyOz compounds, where x≥1; 0

Classes IPC  ?

• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 15/00 - Conduite ou entretien des cellules
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytesRégénération des électrolytes
• B01D 53/32 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par effets électriques autres que ceux prévus au groupe

Abrégé

The invention relates to an electrode for an electrochemical cell which exhibits good electron conductivity and good chemical conductivity, as well as good cohesion with the solid electrolyte of the electrochemical cell. To do this, this electrode is made from a ceramic, which is a perovskite doped with a lanthanide having one or more degrees of oxidation and with a complementary doping element taken from the following group: niobium, tantalum, vanadium, phosphorus, arsenic, antimony, bismuth.

Classes IPC  ?

• H01M 4/90 - Emploi de matériau catalytique spécifié
• H01M 8/12 - Éléments à combustible avec électrolytes solides fonctionnant à haute température, p. ex. avec un électrolyte en ZrO2 stabilisé

Abrégé

The present invention relates to a method for generating hydrogen and oxygen adsorbates by steam electrolysis at 200 to 800°C using an electrolysis cell (30) comprising a solid electrolyte (31) which is made of a proton-conducting ceramic and which is arranged between an anode (32) and a cathode (33), each of which comprises a proton-conducting ceramic, and the ratio of the electroactive surface to the geometric surface of each of which is equal to at least 10, said method comprising the following steps: circulating a current between the anode (32) and the cathode (33), wherein the density of the current is no less than 500 mA/cm2; inserting water in the form of steam, which is fed under pressure to the anode (32); oxidizing said water in the form of steam at the anode (32), and generating highly reactive oxygen at the anode (32) after said oxidation; generating protonated species in the electrolyte (31) after said oxidation and migrating said protonated species in the electrolyte (31); and reducing said protonated species at the surface of the cathode (33) in the form of reactive hydrogen atoms.

Classes IPC  ?

• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 11/04 - ÉlectrodesLeur fabrication non prévue ailleurs caractérisées par le matériau
• C25B 9/10 - Cellules comportant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes comprenant une membrane d'échange d'ions dans ou sur laquelle est incrusté du matériau pour électrode
• C25B 11/03 - ÉlectrodesLeur fabrication non prévue ailleurs caractérisées par la configuration ou la forme perforées ou foraminées
• C25B 3/04 - Production électrolytique de composés organiques par réduction
• C10G 45/44 - Hydrogénation des hydrocarbures aromatiques
• C10G 45/58 - Raffinage des huiles d'hydrocarbures au moyen d'hydrogène ou de composés donneurs d'hydrogène pour changer la structure du squelette de certains hydrocarbures sans craquer les autres hydrocarbures présents, p. ex. pour abaisser le point d'écoulementHydrocraquage sélectif des paraffines normales
• C10G 47/22 - Craquage non catalytique, en présence d'hydrogène
• C01C 1/04 - Préparation d'ammoniac par synthèse
• B01D 53/32 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par effets électriques autres que ceux prévus au groupe

Abrégé

Method for treating water to abate the heavy metal and/or radioactive substance content of same, said method comprising a step of introducing said water into a first contact tank (13), a first step of co-precipitation of at least some of said heavy metals and/or said radioactive substances by injecting at least two different precipitating agents (14, 15) into said first tank, at least one of said precipitating agents being a preformed precipitate, a first coagulation and/or flocculation step in a first coagulation and/or flocculation area (17) for the water coming from the first contact tank (13), a first step of solid/liquid separation of the water coming from the first coagulation and/or flocculation step, thus producing a first clarified liquid and a first sludge, a step of recirculation of at least some of said first sludge into the first contact tank (13).

Classes IPC  ?

• C02F 1/52 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par floculation ou précipitation d'impuretés en suspension
• C02F 1/56 - Composés macromoléculaires
• G21F 9/10 - Traitements par floculation
• C02F 101/20 - Métaux lourds ou leurs composés

Abrégé

The solar energy collector (2) comprises : - a receiver (4) to circulate a heat transfer fluid, - a solar energy concentrator (6) comprising rows (8) of reflectors (10) with mirrors (14) to concentrate solar energy on the receiver (4), - a washing system (26) for washing the reflectors (10), said washing system comprising an array of sprinklers (28), said sprinklers (28) having in-ground bodies (30) and rotary heads (32) rotative with respect to axes (A-A) extending substantially vertically, to spread washing solution on substantially all mirrors (14) of the reflectors (10).

Classes IPC  ?

• F24J 2/10 - munis de réflecteurs comme éléments de concentration
• F24J 2/46 - Parties constitutives, détails ou accessoires de collecteurs de chaleur solaire

Abrégé

The nuclear reactor comprises: - a core having nuclear fuel assemblies; - a core cooling circuit in which a coolant circulates; and - a device designed to inject nanoparticles into the coolant. The nanoparticles comprise first nanoparticles (82) of a first type having a first form factor lower than two and second nanoparticles (84) of a second type different from the first type and having a second form factor greater than two, the nanoparticles containing between 10 wt% and 90 wt% of the first nanoparticles (82) and between 90 wt% and 10 wt% of the second nanoparticles (84).

Classes IPC  ?

• G21C 15/18 - Dispositions pour le refroidissement d'urgenceMise hors circuit de la chaleur
• G21C 19/307 - Dispositions pour introduire un matériau fluent à l'intérieur du cœur du réacteurDispositions pour enlever un matériau fluent du cœur du réacteur avec purification continue du matériau fluent en circulation, p. ex. par extraction des produits de fission spécialement adaptés pour des liquides
• C09K 5/10 - Substances liquides

Abrégé

The invention relates to a system for conveying nuclear fuel pellets, the axis of which is oriented substantially horizontally, said system comprising: a first conveyor (C1) having a first travelling axis (X1), the axis of the cylindrical objects (P) being substantially orthogonal to the travelling axis (X1) of the first conveyor (C1); a second conveyor (C2) having a second travelling axis (X2), the first conveyor (C1) and the second conveyor (C2) being in two different planes; and a transfer means (T) connecting the first conveyor (C1) and the second conveyor (C2), said transfer means (T) having a first chute (24) provided with a ramp (30) having a curvature connecting an inlet (26) to an outlet (28) of the first chute. In addition, an outer edge of the ramp (30) is provided with a rim (31) having the curvature of the ramp (30), in order to guide the pellets from the first conveyor (C1) to the second conveyor (C2).

Classes IPC  ?

• B65G 47/22 - Dispositifs pour influencer la position relative ou l'orientation des objets pendant le transport par transporteurs
• B65G 47/44 - Aménagements ou utilisation des trémies ou des colonnes de descente
• B65G 69/16 - Prévention de la pulvérisation, déformation, rupture ou autre dommage mécanique infligé aux marchandises ou matériaux
• G21C 21/00 - Appareillage ou procédés spécialement adaptés pour la fabrication des réacteurs ou de pièces de ceux-ci

Abrégé

Sealed installation intended for handling materials that require containment, comprising an enclosure, at least one element (20) crossing a wall (24) of the enclosure and able to move in a direction substantially perpendicular to the wall (24), said wall (24) having an opening for the passage of the moving element (20), and an assembly providing sealing between the wall (24) and the moving element (20), the sealing assembly comprising a first gaiter (42) mounted in a sealed manner on the wall (24) and the moving element (20), and a second gaiter (62) radially surrounding the first gaiter (42) and mounted in a sealed manner on the wall (24) and the moving element (20) so that the first gaiter (42) is completely contained within the space defined by the second gaiter (62), the wall (24) and the moving element (20), the space delimited by the first gaiter (42) and the moving element (20) being in pneumatic communication with the inside of the enclosure.

Classes IPC  ?

• G21C 21/00 - Appareillage ou procédés spécialement adaptés pour la fabrication des réacteurs ou de pièces de ceux-ci
• G21F 7/005 - Passages blindés à travers les paroisVerrouillagesDispositifs de transfert entre chambres
• G21F 7/047 - Passages blindésMoyens d'obturation ou de transfert entre boîtes à gants
• B25J 21/02 - Boîtes à gants, c.-à-d. enceintes dans lesquelles les manipulations sont exécutées par des mains humaines dans des gants faisant partie de la paroi de l'enceinteGants de boîtes à gants

Abrégé

The invention relates to a guide and support assembly for a press compensator, comprising: a bushing (32) for guiding the compensator in the bore thereof, said bushing (32) to be mounted around the compensator; a support nut (38) to be screwed into the bore, the guide bushing (32) being located between a shoulder of the compensator and the support nut (38); and a means (44) axially securing the guide bushing (32) and the support nut (38) together while providing axial, transverse play between the guide bushing (32) and the support nut (38), wherein said means (44) is provided such that the guide bushing (32) is freely rotatable relative to the support nut (38).

Classes IPC  ?

• B30B 15/06 - Platines ou pilons de presse
• F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
• B30B 15/00 - Parties constitutives des presses ou accessoires de pressesMesures auxiliaires prises en rapport avec le pressage

Abrégé

The production method of the invention includes the following steps: producing a synthetic gas from the carbon material according to a method including at least one reforming step, the synthetic gas having a first hydrogen/carbon-monoxide molar ratio under the first operating conditions for the reforming operation; producing a stream of hydrogen from a hydrogenated raw material and from a first consumed electrical power, the hydrogen stream having a first molar flow rate for said first consumed electrical power; and lowering the consumed electrical power for producing the hydrogen stream to a second electrical power lower than the first electrical power, and transitioning to second operating conditions that are different from the first operating conditions for the reforming operation in order to compensate for the lowering of the molar flow rate of the hydrogen stream, the synthetic gas having, under the second operating conditions, a second hydrogen/carbon-monoxide molar ratio that is greater than the first hydrogen/carbon-monoxide molar ratio.

Classes IPC  ?

• C01B 3/32 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par réaction de composés organiques gazeux ou liquides avec des agents gazéifiants, p. ex. de l'eau, du gaz carbonique, de l'air
• C25B 1/02 - Hydrogène ou oxygène
• C07C 29/151 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par réduction exclusivement des oxydes de carbone avec de l'hydrogène ou des gaz contenant de l'hydrogène
• C10J 3/00 - Production de gaz contenant de l'oxyde de carbone et de l'hydrogène, p. ex. du gaz de synthèse ou du gaz de ville, à partir de matières carbonées solides par des procédés d'oxydation partielle faisant intervenir de l'oxygène ou de la vapeur

Abrégé

The invention relates to a device for identifying a metallic support on which are inscribed a code based on holes and an alphanumeric code. According to the invention, the device comprises:- means of illumination of the metallic support which consist of light-emitting diodes; - a camera for taking images of the code based on holes and of the alphanumeric code inscribed on the metallic support when the latter is illuminated by the light-emitting diodes; - means of processing an image obtained by the camera comprising means of shape recognition for reading the holes of the code based on holes and for reading the characters of the alphanumeric code which are inscribed on the metallic support.

Classes IPC  ?

• G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation électromagnétique, p. ex. lecture optiqueMéthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire

Abrégé

Installation for dosing a powdery material comprising at least one hopper (TC), a conveyor (2) having a receptacle (6) provided with a filling opening underneath said hopper (TC), a weighing system (4) able to weigh at least said receptacle (6), means (20) able to move the weighing system (4) and the receptacle (6) so as to distance the receptacle (6) from the conveyor (2) and so that, in at least one distanced position, the weighing system (4) weighs solely the receptacle (6) and its content, said weighing system (4) comprising a first balance (8) supporting the receptacle (6) and a second balance (10) on which the first balance (8) rests. Said installation can comprise individual hoppers (T1, T2, T3) upstream of the hopper (TC), making it possible to produce mixtures of powders.

Classes IPC  ?

• G01G 21/23 - Supports ou suspensions de plates-formes de pesée
• G01G 11/00 - Appareils pour peser au passage un produit dont l'écoulement est continuAppareils de pesée pour bande transporteuse

Abrégé

The invention relates to a device for manufacturing tablets, comprising a powder dispenser (6) and a table (2) provided with dies (4) to be filled with powder and over which the dispenser moves (6). The dispenser (6) comprises two sets of rollers engaging with rails (22) attached to the table (2) on either side of the area of movement of the dispenser (6), one set of rollers (26) being used for guiding the movement of the dispenser (6), and one set of rollers being used for clamping the dispenser (6) against the table (2).

Classes IPC  ?

• B30B 15/30 - Alimentation des presses en matériau

Abrégé

The nuclear power station component comprises: a metallic structure (3) having an outer surface (17); at least one marking (11) placed on the outer surface (17) and coding information relating to the component (1). The marking (11) comprises a plurality of luminescent nanoparticles (13, 15) each provided to emit an optical radiation having a determined emission wavelength when said luminescent nanoparticle (13, 15) is excited with optical radiation having a determined excitation wavelength.

Classes IPC  ?

• C09K 11/02 - Emploi de substances particulières comme liants, revêtements de particules ou milieux de suspension

Abrégé

The present invention relates to a process that makes it possible to separate the americium present in an acidic aqueous phase or in an organic phase from other metallic elements that are also found in this phase, by complexing the americium with a water-soluble ethylenediamine derivative. It also relates to a process for the selective recovery of americium from an acidic aqueous phase containing, besides the americium, other metallic elements, which comprises the implementation of this separation process. Applications: treatment of spent nuclear fuels.

Classes IPC  ?

• C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
• G21C 19/46 - Procédés aqueux
• G21F 9/12 - Traitements par absorptionTraitements par adsorptionTraitements par échange d'ions

Abrégé

Installation for welding fuel assembly top nozzles onto nuclear fuel rods comprising a device (D) for axially retaining said rod and for setting it in rotation and a welding chamber (C), said device (D) comprising a gripper and means for closing the gripper onto the fuel rod, said means comprising a push-rod (32) to apply an axial force to the gripper, a linear actuator (44) of axis (X2) parallel to the longitudinal axis of the device (X), a yoke (46) translationally secured to said push-rod and able to rotate about a fixed axis (Y) orthogonal to the longitudinal axis (X) which is not secant therewith, said yoke (46) being articulated with respect to the linear actuator (44) about an axis (Y1) parallel to the orthogonal axis (Y) such that the linear actuator (44) causes the yoke (46) to rotate about the first orthogonal axis (Y) and causes a translational movement of the push-rod, closing the gripper onto the fuel rod.

Classes IPC  ?

• G21C 3/10 - Obturateurs d'extrémités
• G21C 21/00 - Appareillage ou procédés spécialement adaptés pour la fabrication des réacteurs ou de pièces de ceux-ci
• B23K 9/028 - Soudage de joints continusSupportsPièces rapportées pour des joints curvilignes situés dans un plan
• B23K 37/053 - Alignement des pièces cylindriquesDispositifs de serrage à cet effet
• B23Q 1/26 - Supports mobiles ou réglables d'outils ou de pièces caractérisés par des particularités de structure concernant la coopération des organes animés d'un mouvement relatifMoyens pour empêcher un déplacement relatif de ces organes

Abrégé

The invention relates to a method of measuring the uranium concentration of an aqueous solution, comprising the following successive steps: a) the electrochemical reduction to valence IV of the uranium present in the aqueous solution at a valence above IV, this reduction being carried out at pH < 2 and by passing an electric current through the solution; b) the measurement of the absorbance of the solution obtained on conclusion of step a) at a wavelength chosen between 640 and 660 nm, preferably at 652 nm; and c) the determination of the uranium concentration of the aqueous solution by deduction from the uranium concentration of valence (IV) present in the aqueous solution obtained on completion of step a) from the measurement of the absorbance obtained in step b).

Classes IPC  ?

• G01N 21/31 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique

Abrégé

A radiopharmaceutical composition that comprises a radioactive isotope of lead (212Pb) combination with a pharmaceutical or an antibody or antibody fragment and a chelating agent. These compositions are especially useful in the imaging and diagnosis of tumors and tumor metastases.

Classes IPC  ?

• A61K 51/10 - Anticorps ou immunoglobulinesLeurs fragments

Abrégé

The invention relates to equipment for transferring powder from a drum into a tank, comprising at least one handling device and a hopper assembly (T) connected to a tank (4). The handling device comprises a hollow cylindrical body for surrounding a drum (2) and immobilizing same in order enable the latter to be turned over, the drum (2) being open and the powder being contained in at least one sealed bag. The hopper assembly (T) comprises a hopper (60) and a sealed chamber (62) mounted onto the upstream end of the hopper, said chamber (62) comprising an opening for enabling the entry of the hollow cylindrical body loaded with the drum (2) and the bag powder, wherein, after the withdrawal of the hollow cylindrical body loaded with the empty drum (2), said opening is closed and the bag is opened so as to allow the powder to flow into the hopper (60).

Classes IPC  ?

• B66C 1/62 - Éléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage, de descente ou de halage, ou adaptés pour être utilisés avec ces mécanismes et transmettant les efforts à des articles ou à des groupes d'articles par moyens mécaniques comportant des organes de saisie ayant une forme complémentaire de celle des objets à manipuler
• B65G 65/23 - Dispositifs pour basculer et vider les réceptacles

Abrégé

The invention relates to a device (1) for inserting, guiding, and removing cylindrical parts to be ground in a centerless grinder (10). According to the invention, means (4, 40, 41) for the micrometric adjustment of the alignment of inlet (3) and outlet (5) guides of a guide rail (2) are provided, wherein said micrometric adjustment means are provided separately from one another. Using the invention, very precise alignment can be achieved, and any deviation of the parts is thereby avoided.

Classes IPC  ?

• B24B 5/22 - Machines ou dispositifs pour meuler des surfaces de révolution des pièces, y compris ceux qui meulent également des surfaces planes adjacentesAccessoires à cet effet possédant des moyens "sans centre" pour supporter, guider, soutenir ou mettre en rotation la pièce pour meuler des surfaces cylindriques, p. ex. des surfaces de boulons
• B24B 5/313 - Machines ou dispositifs pour meuler des surfaces de révolution des pièces, y compris ceux qui meulent également des surfaces planes adjacentesAccessoires à cet effet comportant des supports pour plusieurs pièces à usiner en série
• B24B 5/35 - Accessoires
• B24B 41/00 - Éléments constitutifs des machines ou dispositifs à meuler, tels que bâtis, bancs, chariots ou poupées
• G21C 19/00 - Dispositions pour le traitement, pour la manipulation, ou pour faciliter la manipulation, du combustible ou d'autres matériaux utilisés à l'intérieur du réacteur, p. ex. à l'intérieur de l'enceinte sous pression

Abrégé

The invention relates to a dressing device (1) for a grinding wheel (2), including a sleeve (10) for laterally holding and guiding, along the horizontal axis (X) thereof, a corundum rod (3), a ram (11) for applying a constant pressing force to the corundum rod (3) held and guided in the sleeve (10) against the grinding wheel (2), means (4, 40, 41) for rigidly connecting the ramrod (110) to the end of the corundum rod, and linear guide means (13) for the sleeve for translating the corundum rod parallel to the axis (y) of the grinding wheel while keeping said rod pressed against the latter with a constant force. The invention can be used in a centerless grinder (5) in which the grinding wheel (2) has the function of grinding nuclear fuel pellets.

Classes IPC  ?

• B24B 53/04 - Dispositifs ou moyens pour dresser ou remettre en état des surfaces abrasives des surfaces cylindriques ou coniques d'outils abrasifs ou de meules
• B24B 53/12 - Outils à dresserLeurs porte-outils

Abrégé

A solar collection system having a secondary reflector is provided. The secondary reflector may be located above a field of primary reflectors and below a solar receiver. The secondary reflector may form a portion of an ellipse or macrofocal ellipse and be operable to reflect at least a portion of the solar radiation reflected by the primary reflectors onto the solar receiver. The secondary reflector may be disposed away from the solar receiver and associated tertiary reflectors such that it does not intercept reflected solar radiation from the outer primary reflectors that would otherwise have struck the solar receiver and tertiary reflectors had the secondary reflector not been present.

Classes IPC  ?

• F24J 2/16 - à surfaces planes
• F24J 2/18 - à surfaces réfléchissantes interactives opposées et espacées
• F24J 2/54 - spécialement adapté pour un mouvement de rotation

Abrégé

The invention relates to a method making it possible to purify the uranium from a natural uranium concentrate. Said method includes: a) extracting the uranium, present in the form of uranyl nitrate, in an aqueous phase A1 resulting from the dissolution of the natural uranium concentrate in nitric acid by means of an organic phase containing an extractant in an organic thinner; b) stripping the organic phase, obtained from step a), with an aqueous phase A2; and c) back extracting the uranyl nitrate from the organic phase, obtained from step b), by means of flowing said organic phase into an apparatus, in the opposite flow direction of an aqueous phase A3. The invention is characterized in that the extractant is an N,N-dialkylamide and in that the ratio between the flow rates of the organic phase, obtained from step b), and the aqueous phase A3 in the apparatus where step c) occurs is greater than 1. The invention is of use in the refinement of natural uranium concentrates produced by uranium mines.

Classes IPC  ?

• C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
• B01D 11/04 - Extraction par solvants de solutions
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
• G21C 19/46 - Procédés aqueux

Abrégé

The invention relates to a device for identifying a metal substrate present in a strongly metallic environment that may also be dusty. According to the invention, the device includes a passive radio-frequency identification (RFID) label, a label carrier suitable for being attached to the metal substrate and to position the label at a distance therefrom, and a RFID reader having an antenna that includes, as an induction loop, two sections of a coaxial cable having a substantially identical length and each including a metal core and a metal pleat surrounding the core, the two sections being linked together, on the one hand, at one end thereof by connecting the core of one to the pleat of the other and conversely and, on the other hand, at the other end thereof by connecting only the pleats together, the cores thereof being separated at said other end. Two embodiments are provided for producing the label carrier.

Classes IPC  ?

• G06K 19/077 - Détails de structure, p. ex. montage de circuits dans le support
• G06K 7/08 - Méthodes ou dispositions pour la lecture de supports d'enregistrement avec des moyens de perception des modifications d'un champ électrostatique ou magnétique, p. ex. par perception des modifications de la capacité entre des électrodes
• H01Q 1/22 - SupportsMoyens de montage par association structurale avec d'autres équipements ou objets
• G21F 7/04 - Boîtes à gants blindées
• G21F 7/00 - Cellules ou chambres blindées

Abrégé

The invention relates to a device for removing an electrode from an electrode holder and/or for mounting an electrode in an electrode holder, said electrode holder forming part of a welding device, said device comprising a receptacle for used electrodes, which is provided with an opening and an assembly mounted on said opening, said assembly including a passage (7) through a longitudinal axis (X) connecting a recess (46), for receiving one end of the electrode holder which forms a mandrel, and the receptacle, said longitudinal axis (X) being intended to be substantially vertical, means (46) for clamping or unclamping a mandrel of the electrode holder, means (54) for rigidly connecting the electrode to said device and means (28) for allowing or not allowing the used electrode to be inserted into the receptacle.

Classes IPC  ?

• B23K 9/12 - Alimentation automatique en électrodes ou en pièces ou déplacement automatique des électrodes ou des pièces pour le soudage ou le découpage à l'arc en lignes continues ou par points
• B23K 9/167 - Soudage ou découpage à l'arc utilisant des gaz de protection et une électrode non consommable
• B23K 9/26 - Accessoires pour électrodes, p. ex. embouts rapportés pour démarrer l'opération

Abrégé

The invention relates to a method for assembling two parts (10, 30) made of Si3N4 in a fluid-tight manner, said two parts comprising a male end (11) and a female end (31), respectively, each of said ends being provided with mechanical assembly means (14, 34) designed to engage one with the other and defining, in the assembled condition, a space (42) therebetween, said method including the assembly of said parts by means of the engagement of the mechanical assembly means of the males and female ends, and the filling of the space existing between said assembly means with a glass seal, and the method is characterized in that the filling process comprises: coating the mechanical assembly means of one and/or the other assembly means of the male and female ends, before assembly, with a borosilicate glass paste; and applying a thermal treatment to the parts after the assembly thereof.

Classes IPC  ?

• C04B 37/00 - Liaison des articles céramiques cuits avec d'autres articles céramiques cuits ou d'autres articles, par chauffage

Abrégé

Methods, systems, and apparatus by which steam and/or hot water generated using solar energy may be utilized to generate electricity or work are disclosed herein. A method in one instance may involve driving a first turbine using a fluid having energy obtained from a main energy source other than solar energy, and using solar energy-generated hot water and/or steam as an auxiliary energy input to drive the first turbine. An apparatus in one instance may include (1) a first turbine in fluid communication with and driven by a fluid heated by a main energy source other than solar energy in fluid communication with (2) a solar steam and/or hot water generator that utilizes solar energy to generate hot water and/or steam or other working fluid as an auxiliary energy input source for the first turbine.

Classes IPC  ?

• F03G 6/06 - Dispositifs produisant une puissance mécanique à partir d'énergie solaire avec des moyens de concentration de l'énergie solaire
• F22B 1/00 - Méthodes de production de vapeur caractérisées par le genre de chauffage
• F22B 33/00 - Installations de chaudières à vapeur, p. ex. comportant des associations de chaudières à vapeur, de types différents

Abrégé

The present invention relates to a tubular pipe (10) for transporting liquid sodium suitable for inhibiting any leaks of sodium outside the pipe. Said pipe includes a pipe body (20) covered on the inside with an inner layer which includes: a first continuous layer (40) made of ceramic or a metal or metal alloy, for being placed in contact with the liquid sodium carried by the tubular pipe; and between the pipe body and said first ceramic layer, an intermediate layer (50) made of a reactive material which, when said layer contacts the liquid sodium, the layer turns into a modified material which has separate electric conductivity from that of the reactive material.

Classes IPC  ?

• G21C 17/00 - SurveillanceTests
• G21C 17/025 - Dispositifs ou dispositions pour la surveillance du réfrigérant ou du modérateur pour la surveillance de réfrigérants ou de modérateurs liquides pour la surveillance de réfrigérants constitués par des métaux liquides
• F16L 58/14 - Revêtements caractérisés par les matériaux utilisés de matériaux céramiques ou vitreux
• F17D 5/02 - Prévention, interception ou localisation des pertes
• G01M 3/04 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite

Abrégé

Systems for producing vaporous working fluid are provided, including: a first fluid passage configured to convey a working fluid to a first solar heating system, wherein the first solar heating system heats the working fluid to produce a heated working fluid having a temperature t1 and a quality X1; a second fluid passage configured to convey a heat transfer fluid to a second solar heating system to produce a heated heat transfer fluid; and a heat exchanger configured to transfer heat from the heated heat transfer fluid to the heated working fluid. When X1 < 1, the heat transfer results in an increase in quality of the heated working fluid When X1 = 1, the heat transfer results in an increase in temperature of the heated working fluid. Methods of using the systems to produce vaporous working fluid are also provided.

Classes IPC  ?

• F03G 6/06 - Dispositifs produisant une puissance mécanique à partir d'énergie solaire avec des moyens de concentration de l'énergie solaire
• F24J 2/14 - semi-cylindriques ou en forme de cylindre parabolique

Abrégé

The present invention relates to the use of a chemical element selected from plutonium, tellurium, antimony and the mixtures thereof, for inhibiting the formation of a zirconium molybdate precipitate in an aqueous solution containing the element molybdenum and the element zirconium.

Classes IPC  ?

• G21C 19/46 - Procédés aqueux
• G21F 9/06 - Traitements

Abrégé

The invention relates to a device for changing an electrode of an electrode-carrying tool (2) of a welding device, said electrode-changing device comprising a first portion (12) for housing an electrode-carrying tool (2), said first portion (12) comprising a means for keeping the electrode-carrying tool (2) stationary and a second portion (14) that is mounted around the first portion (12) covering the portion of the electrode (8) that projects outside the first portion (12), the second portion (14) being separatable from the first portion (12) by means of translation along the electrode and being rotatably movable relative to the stationary portion (14) when said second portion surrounds said stationary portion, the second portion (14) comprising a means (33) for clamping onto or unclamping from the mandrel (6) and a means (36) for securing the electrode (8) of the second portion (14), thus enabling the removal of the mandrel (6) when the first portion (12) and second portion (14) separate.

Classes IPC  ?

• B23K 9/32 - Accessoires
• B23K 9/12 - Alimentation automatique en électrodes ou en pièces ou déplacement automatique des électrodes ou des pièces pour le soudage ou le découpage à l'arc en lignes continues ou par points

Abrégé

Systems, methods, and apparatus by which solar energy may be collected as heat are disclosed. Some systems include an elevated solar receiver comprising multiple tubes arranged lengthwise in the receiver in a side-by-side parallel configuration across a transverse dimension of the receiver. The receiver comprises an inlet section configured to receive a heat transfer fluid into the tubing arrangement and an outlet section configured to output heated heat transfer fluid from the tubing arrangement. The multiple tubes of the tubing arrangement define together a flowing circuit between the inlet section and the outlet section from the outer tube or tubes to the inner tube or tubes. The solar energy collector system further includes an instrumentation and control system for controlling the orientation of at least one orientable reflector to provide in operation a concentrated illuminated area comprising a peaked profile across the transverse dimension of the receiver.

Classes IPC  ?

• F24J 2/07 - Récepteurs à haute température, p.ex. pour centrales solaires
• F24J 2/14 - semi-cylindriques ou en forme de cylindre parabolique
• F24J 2/18 - à surfaces réfléchissantes interactives opposées et espacées
• F24J 2/24 - le fluide vecteur circulant à travers des conduites tubulaires absorbant la chaleur

Abrégé

The present invention relates to an electrolysis device comprising an elementary assembly (10) made up of a membrane element (12) surrounded on either side by an electrode (11, 13), a rigid conducting plate (30), at least one electric conductor (21, 31) inserted between said elementary assembly (10) and said rigid conducting plate (30), said electric conductor (21, 31) being made up of a corrugated plate suitable for deforming and ensuring electric contact between said elementary assembly (10) and said rigid conducting plate (30). The device (100) also comprises a peripheral element (28, 38) at least partially surrounding said electric conductor (21, 31), said peripheral element (28, 38, 48, 58) being made of a material with a lower thermal expansion coefficient than the thermal expansion coefficient of the material of said electric conductor (21, 31).

Classes IPC  ?

• C25B 9/18 - Assemblages comprenant plusieurs cellules
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• H01M 8/02 - Éléments à combustibleLeur fabrication Détails
• C25B 9/04 - Dispositifs pour l'alimentation en courant; Connexions d'électrodes; Connexions électriques inter-cellules

Abrégé

The invention relates to a collector including at least one photovoltaic cell for converting solar energy into electric energy, and at least one heat sink (6) for converting solar energy into heat energy by heating a fluid, arranged so as to receive solar energy through the photovoltaic cell (4). According to one form of the invention, the photovoltaic cell (4) includes a plurality of vertically adjacent semiconductor junctions having different forbidden energy bands, each semiconductor junction having a forbidden energy band of greater than or equal to 1.2 eV, in particular greater than or equal to 1.4 eV.

Classes IPC  ?

• H01L 31/058 - comprenant des moyens pour utiliser l'énergie thermique, p.ex. systèmes hybrides, ou une source additionnelle d'énergie électrique
• H01L 31/0304 - Matériaux inorganiques comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
• H01L 31/0392 - Dispositifs à semi-conducteurs sensibles aux rayons infrarouges, à la lumière, au rayonnement électromagnétique d'ondes plus courtes, ou au rayonnement corpusculaire, et spécialement adaptés, soit comme convertisseurs de l'énergie dudit rayonnement e; Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de ces dispositifs ou de leurs parties constitutives; Leurs détails caractérisés par leurs corps semi-conducteurs caractérisés par leur structure cristalline ou par l'orientation particulière des plans cristallins comprenant des films minces déposés sur des substrats métalliques ou isolants
• H01L 31/052 - Moyens de refroidissement directement associés ou intégrés à la cellule PV, p.ex. éléments Peltier intégrés pour refroidissement actif ou puits thermiques directement associés aux cellules PV

Abrégé

The invention relates to a radiation-attenuating elastomer material, of the type including an elastomer containing a dispersion of metal oxide powder, which is characterised in that the metal oxide powder includes 70 to 90 wt% of bismuth trioxide, 5 to 15 wt% of tungsten trioxide and 5 to 15 wt% of lanthanum trioxide. The invention also relates to the use of said elastomer material for manufacturing personal protective garments against ionising radiation. The invention further relates to a multi-layer glove for protecting against ionising radiation in which at least one layer is made from said elastomer material, as well as to the use of said glove for protection against the ionising radiation emitted by nuclear fuel powder, in particular containing plutonium. The invention can be used in the nuclear industry for handling nuclear fuel powder as well as in medical imaging, interventional radiology, nuclear medicine, treatment of plastic materials, inspection and testing of manufactured parts, etc.

Classes IPC  ?

• C08K 3/22 - OxydesHydroxydes de métaux
• G21F 1/10 - Substances organiquesDispersions dans des supports organiques

Abrégé

The invention relates to a method for selectively recovering americium from an aqueous nitric phase containing americium, curium, and fission products including lanthanides and yttrium, but free of uranium, plutonium and neptunium, or which contains only traces of the latter elements. The invention can be used for processing and recycling irradiated nuclear fuels, in particular to remove americium from raffinates from methods for extracting and purifying uranium and plutonium such as the PUREX and COEXTM methods.

Classes IPC  ?

• C22B 3/00 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
• G21C 19/46 - Procédés aqueux
• G21F 9/12 - Traitements par absorptionTraitements par adsorptionTraitements par échange d'ions
• C01G 56/00 - Composés des éléments transuraniens

Abrégé

The invention relates to the use of a diglycolamide to increase the separation factor between americium and curium and/or between lanthanides during an extraction operation including contacting an acidic aqueous phase, which contains americium, curium and/or lanthanides, with an organic phase that is immiscible with water, containing at least one extractant in an organic diluent, and then separating said aqueous and organic phases, the diglycolamide being added to said aqueous phase. The invention can be used for processing and recycling irradiated nuclear fuels, in particular to selectively recover americium from highly active aqueous solutions such as raffinates from processing irradiated nuclear fuels by a PUREX or COEXTM process, for processing rare earth minerals such as monazite, xenotime or bastnaesite, in order to facilitate the separation of "light" rare earth elements from "heavy" rare earth elements and from yttrium, or the separation of two rare earth elements having adjacent or close atomic numbers.

Classes IPC  ?

• C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
• C22B 3/40 - Mélanges
• C22B 59/00 - Obtention des métaux des terres rares
• C22B 60/00 - Obtention des métaux ayant un nombre atomique de 87 ou plus, c.-à-d. métaux radioactifs
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
• G21C 19/46 - Procédés aqueux
• G21F 9/04 - Traitement des liquides

Abrégé

The invention relates to a method for regenerating a solid filter containing iodine in the form of silver iodate and/or iodide and optionally physisorbed molecular iodine in a solid filter containing silver in nitrate form. Said method includes the following steps: a) extracting the iodine contained in the filter by placing said filter in contact with a basic aqueous solution containing a reducing agent, said extraction being performed at ambient temperature, followed by separating the filter from said basic aqueous solution; b) extracting the silver contained in the filter obtained in step a) by placing said filter in contact with an acid aqueous solution, followed by separating the filter from said acid aqueous solution; and c) impregnating the filter obtained in step b) with silver by placing said filter in contact with a silver nitrate solution, followed by drying the filter. The invention can be used in the following fields: nuclear facilities, in particular spent nuclear fuel reprocessing plants.

Classes IPC  ?

• B01D 41/00 - Régénération, à l'extérieur du filtre, de la substance filtrante ou des éléments filtrants utilisés dans la filtration des fluides liquides ou gazeux
• G21F 9/00 - Traitement des matériaux contaminés par la radioactivitéDispositions à cet effet pour la décontamination
• G21F 9/30 - Traitements

Abrégé

The invention relates to an assembly for producing at least one synthetic hydrocarbon from at least one inflow of carbon monoxide and one inflow of carbon dioxide, the assembly (6) including: an electrolyser (9) provided for producing a first flow of hydrogen; a first conversion unit (11) provided for producing an intermediate flow of carbon monoxide from at least one part of the inflow of carbon dioxide and hydrogen; a reactor (13) for synthesising said synthetic hydrocarbon; characterised in that said assembly includes: a second conversion unit (15) provided for producing a second flow of hydrogen from carbon monoxide and water, the second hydrogen flow being directed toward the synthesis reactor (13); a guide assembly (19) provided for selectively distributing the inflow of carbon monoxide between the second conversion unit (15) and the synthesis reactor (13), and for selectively distributing the first hydrogen flow between the first conversion unit (11) and the synthesis reactor (13); and a control unit (21) provided for controlling the guide assembly (19).

Classes IPC  ?

• C10G 2/00 - Production de mélanges liquides d'hydrocarbures de composition non définie à partir d'oxydes de carbone
• C01B 3/04 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par décomposition de composés inorganiques, p. ex. de l'ammoniac
• C01B 3/48 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par réaction de composés organiques gazeux ou liquides avec des agents gazéifiants, p. ex. de l'eau, du gaz carbonique, de l'air par réaction d'hydrocarbures avec des agents gazéifiants suivie par une réaction de la vapeur d'eau avec l'oxyde de carbone
• C07C 1/04 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir d'oxydes de carbone à partir de monoxyde de carbone avec de l'hydrogène
• C10J 3/00 - Production de gaz contenant de l'oxyde de carbone et de l'hydrogène, p. ex. du gaz de synthèse ou du gaz de ville, à partir de matières carbonées solides par des procédés d'oxydation partielle faisant intervenir de l'oxygène ou de la vapeur
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau

Abrégé

Process for producing synthetic hydrocarbons from at least one carbonaceous material, the process comprising the following steps: - evaluating the resources of said carbonaceous material that are available over a given territory; - determining, from said resources, a total production capacity of synthetic hydrocarbons; - determining from the total production capacity a number of individual production units necessary to obtain the total production capacity, each individual production unit having an individual production capacity between 100 and 1000 barrels per day of synthetic hydrocarbons; - building said number of individual production units on said territory; - transporting the carbonaceous material from the territory to the individual production units; - producing the synthetic hydrocarbons in the individual production units from the transported carbonaceous material.

Classes IPC  ?

• C01B 3/04 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par décomposition de composés inorganiques, p. ex. de l'ammoniac
• C07C 1/04 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir d'oxydes de carbone à partir de monoxyde de carbone avec de l'hydrogène
• C10G 2/00 - Production de mélanges liquides d'hydrocarbures de composition non définie à partir d'oxydes de carbone

Abrégé

A working fluid heating system that utilizes solar energy and fuel-fired heaters to heat the working fluid is provided. The system may have a fuel heating plant that has a first fuel-fired heater (101) to heat a first portion of working fluid, a solar heating plant (102) that has both a solar thermal-energy heater (113) and a second fuel-fired heater (114) to heat a second portion of working fluid. The first and second portions join in a pipeline (115) to supply heated working fluid to an electrical generation facility (120).

Classes IPC  ?

• F03G 6/00 - Dispositifs produisant une puissance mécanique à partir d'énergie solaire
• F01K 17/04 - Utilisation de la vapeur ou des condensats provenant soit du soutirage, soit de la sortie des ensembles fonctionnels de machines motrices à vapeur pour des buts définis autres que le chauffage
• F01K 13/00 - Dispositions générales ou processus généraux de fonctionnement des installations complètes d'ensembles fonctionnels de machines à vapeur
• F22B 1/00 - Méthodes de production de vapeur caractérisées par le genre de chauffage
• F22B 33/00 - Installations de chaudières à vapeur, p. ex. comportant des associations de chaudières à vapeur, de types différents

Abrégé

The invention relates to a method for treating spent nuclear fuel, which includes (a) decontaminating the uranium, plutonium and neptunium found in a nitric aqueous phase resulting from dissolving said nuclear fuel in HNO3, with regard to the actinides (III) and the majority of the fission products also found in said phase, said decontamination including at least the co-extraction of the uranium, plutonium and neptunium in a solvent phase; (b) splitting the uranium, plutonium and neptunium found in the solvent phase in a first aqueous phase containing either plutonium with no U or Np, or a mixture of Pu and U with no Np, or a mixture of Pu, U and Np, and a second aqueous phase containing either a mixture of U and Np with no Pu, or uranium with no P or Np; (c) storing the first aqueous phase; (d) purifying the plutonium or the mixture of Pu and U or the mixture of Pu, U and Np found in the first aqueous phase relative to the fission products still found in said phase, said purification including at least one addition of uranium, in order to obtain, at the end of said purification, an aqueous solution containing a mixture of Pu and U or Pu, U and Np; and (e) co-converting the resulting mixture of Pu and U or the mixture of Pu, U and Np into a mixed oxide.

Classes IPC  ?

• G21C 19/46 - Procédés aqueux
• C01G 43/025 - Dioxyde d'uranium
• C01G 56/00 - Composés des éléments transuraniens

Abrégé

The invention relates to a system for filling a jar with a powder material, for example for the production of nuclear fuel, comprising a connection device between the jar and a system for feeding material, the device comprising: a stationary connection portion (I) connected to the feeding system; a connection portion (II) movable relative to the stationary connection portion (I) intended for being connected to the filling opening of the container (4), the movable connection portion (II) comprising, at a downstream end thereof, a lip seal for performing a tight connection by contact with the contours of the filling opening of the jar, said downstream end being connected to the stationary connection portion (I) by a bellows (42) such as to provide mechanical disengagement between the downstream end of the movable connection portion (II) and the stationary connection portion (I).

Classes IPC  ?

• F16L 27/02 - Raccords universels, c.-à-d. avec une liaison mécanique permettant un mouvement angulaire ou un réglage des axes des parties raccordées dans une direction quelconque
• F16L 27/11 - Raccords réglablesRaccords permettant un déplacement des parties raccordées comportant uniquement une connexion flexible les extrémités des tuyaux étant assemblées au moyen d'un manchon flexible le manchon ayant la forme d'un soufflet avec des ondulations multiples
• B30B 15/30 - Alimentation des presses en matériau
• B65D 88/66 - Grands réceptacles caractérisés par des moyens pour faciliter le remplissage ou le vidage en empêchant la formation de ponts par des dispositifs à vibration ou à chocs
• G21C 3/02 - Éléments combustibles
• G21C 3/62 - Combustible céramique

Abrégé

Methods and systems for generating steam using solar energy are provided here. The methods and systems can be used to generate steam of a desired quality, e.g. about 70%, or superheated steam. Some methods for producing steam of a desired quality comprise flowing water into an inlet of receiver in a linear Fresnel reflector system, wherein the receiver comprises multiple parallel tubes tλ connected in parallel, and i=l,k, and irradiating each tube tλ along its respective length L1 with solar radiation so that solar radiation absorbed at each tube generates thermal input along its length and so that water begins to boil in at least one of the tubes at a point X1 along its length. The methods comprise using one or more temperatures T1 in an economizer region of a tube tλ or one or more changes in length of the tubes as input to a controller that controls mass flow of water into each of the multiple tubes, thereby controlling quality of steam exiting the receiver.

Classes IPC  ?

• F22B 35/16 - Systèmes de commande pour chaudières à vapeur pour chaudières à vapeur du type à circulation forcée réagissant au pourcentage de vapeur dans le mélange de vapeur et d'air
• F22B 1/00 - Méthodes de production de vapeur caractérisées par le genre de chauffage

Produits et services

(1) Combustible obtenu à partir de la biomasse; machines et installations pour transformer de la biomasse en combustible. (1) Collecte de la biomasse; traitement de matériaux, nommément, traitement de la biomasse en vue de sa transformation en combustible; traitement des déchets carbonés et des produits organiques solides; traitement et recyclage des produits organiques solides; transformation et recyclage de la biomasse.