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376 - Induced nuclear reactions: processes, systems, and elements

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Class / Patent application numberDescriptionNumber of patent applications / Date published
376426000 Plural fuel segments or elements 79
376412000 Encased with nonfuel component 60
376456000 Vented fuel 3
20110058638Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system - Illustrative embodiments provide a nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system.03-10-2011
20110150167Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system - Illustrative embodiments provide a nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system.06-23-2011
20110051881Nuclear fission reactor, vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system - Illustrative embodiments provide a nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system.03-03-2011
376411000 Spherical particles 3
20100014625SPHERICAL FUEL ELEMENT AND PRODUCTION THEREOF FOR GAS-COOLED HIGH TEMPERATURE PEBBLE BED NUCLEAR REACTORS (HTR) - The invention relates to a novel design and production of fuel element pebbles which satisfy the requirements of high temperature pebble bed nuclear reactors of the next generation. The invention uses a shell of the fuel element pebbles that is devoid of fuel and consists of silicon carbide (SiC) and/or zircon carbide (ZrC), in addition to natural graphite and graphitized petroleum coke, said shell having a maximum average nominal thickness of 5 mm and preferably only 3 mm.01-21-2010
20100296621METHOD OF MANUFACTURING NUCLEAR FUEL ELEMENTS AND A CONTAINER FOR IMPLEMENTING SUCH A METHOD - A method of manufacturing nuclear fuel elements comprising the steps of placing nuclear fuel balls in the container made from ultra-porous material, applying a CVI to the container and removing the container. The container for manufacturing fuel elements comprising balls, and is produced from at least one ultra-porous material, for example carbon foam.11-25-2010
20090129533Nuclear fuel - This invention relates to a method of preparing nuclear fuel including the step of depositing at least two adjacent series of layers (05-21-2009
376450000 With condition sensing or indicating means 2
20090122948Method of Determining at Least One Technological Uncertainty Factor for Nuclear Fuel Elements, and Corresponding Methods of Designing, Fabricating, and Inspecting Nuclear Fuel Elements - The invention relates to a method of determining at least one technological uncertainty factor in respect of nuclear fuel elements (05-14-2009
20110170654NUCLEAR FUEL PELLET INSPECTION - A system for inspecting nuclear fuel pellets is provided. The inspection system is configured to use X-ray radiation at one or more energies to probe nuclear fuel pellets disposed within a nuclear fuel rod for nuclear fuel pellet defects. In some implementations of the inspection system, a nuclear fuel rod manufacturing facility may be able to integrate the inspection system for fully or partially automated inspection of all fuel rods produced within the facility.07-14-2011
376451000 Having particular end closure or seal (e.g., weld, plug, cap, etc.) 2
20090252283Nuclear fission reactor fuel assembly adapted to permit expansion of the nuclear fuel contained therein - A nuclear fission reactor fuel assembly adapted to permit expansion of the nuclear fuel contained therein. The fuel assembly comprises an enclosure having enclosure walls to sealingly enclose a nuclear fuel foam defining a plurality of interconnected open-cell voids or a plurality of closed-cell voids. The voids permit expansion of the foam toward the voids, which expansion may be due to heat generation and/or fission gas release. The voids shrink or reduce in volume as the foam expands. Pressure on the enclosure walls is substantially reduced because the foam expands toward and even into the voids rather than against the enclosure walls. Thus, the voids provide space into which the foam can expand.10-08-2009
376457000 Nonconventional jacket or can material 1
20120045030METHOD FOR FORMING ROUGHNESS ON SURFACE OF NUCLEAR FUEL ROD CLADDING INCLUDING ZIRCONIUM - A method for forming roughness on an outer surface of cladding of a fuel nuclear rod including zirconium includes: positioning the cladding of the nuclear fuel rod at a first electrode and connecting a positive electrode thereto, and positioning a conductive plate at a second electrode and connecting a negative electrode thereto; putting the cladding of the nuclear fuel rod in an electrolyte solution; and applying voltage to the positive electrode and the negative electrode to cause oxidation on the outer surface of the cladding of the nuclear fuel rod. In this case, the electrolyte solution is maintained at 10° C. or lower.02-23-2012
376455000 Hollow, annular, or graduated fuel layers or members (e.g., concentric, helical, etc.) 1
20130070890GROOVED NUCLEAR FUEL ASSEMBLY COMPONENT INSERT - A nuclear fuel assembly component such as a control rod that has a cylindrical insert such as neutron absorbing material that is closely received within a cladding that is sealed at either end with end caps. The cylindrical member has grooves formed in its side wall extending from an upper surface to a lower surface to permit air to escape from the cladding as the cylindrical member is loaded into the cladding during manufacture.03-21-2013
20120183116COMPOSITE NUCLEAR FUEL PELLET - A composite nuclear fuel pellet comprises a composite body including a UO2 matrix and a plurality of high aspect ratio particies dispersed therein, where the high aspect ratio particies have a thermal conductivity higher than that of the UO2 matrix. A method of making a composite nuclear fuel pellet includes combining UO2 powder with a predetermined amount of high aspect ratio particles to form a combined powder, the high aspect ratio particles having a thermal conductivity higher than that of the UO2 powder; mixing the combined powder in a solvent to disperse the high aspect ratio particles in the UO2 powder; evaporating the solvent to form a dry mixture comprising the high aspect ratio particles dispersed in the UO2 powder; pressing the dry mixture to form a green body; and sintering the green body to form the composite fuel pellet.07-19-2012
20090268861Plutonium/Zirconium Hydride/Thorium Fuel Matrix - The present invention is directed to a plutonium-based nuclear fuel that is suitable for burning weapon-grade and reactor-grade plutonium in a light water reactor, thereby reducing the amount of such material that could potentially be used to manufacture a weapon. In one embodiment, the fuel is comprised of plutonium, zirconium hydride, and thorium, with the zirconium hydride comprising more than about 20% by weight of the fuel.10-29-2009
20080240333Nuclear fission igniter - Illustrative embodiments provide nuclear fission igniters for nuclear fission reactors and methods for their operation. Illustrative embodiments and aspects include, without limitation, a nuclear fission igniter configured to ignite a nuclear fission deflagration wave in nuclear fission fuel material, a nuclear fission deflagration wave reactor with a nuclear fission igniter, a method of igniting a nuclear fission deflagration wave, and the like.10-02-2008
20080310577FUEL CHANNEL FASTENER - A fuel channel fastener having a body with a hole, a bolt inserted into the hole, at least two anti-rotation supports attached to the body, a spring configured to attach to the body and to extend away from the body down the sides of a fuel assembly fuel channel, and at least two spring anti-rotation pads connected to the body.12-18-2008
20100150300NUCLEAR FUEL IN THE FORM OF A PELLET, WITH IMPROVED STRUCTURE - A pellet including a nuclear fuel material for applications in reactors. The pellet has an elongated shape along an axis (z) and includes on an outer radial surface at least one privileged breaking area (R06-17-2010
20110150166METHOD OF PROVIDING A NUCLEAR FUEL AND A FUEL ELEMENT PROVIDED BY SUCH A METHOD - A nuclear fuel element including a uranium-molybdenum alloy that provides an enhanced reactivity in research, test and radioisotope production nuclear reactors. In this uranium-molybdenum alloy, the uranium is enriched in the isotope 235-U, while the molybdenum is depleted in the isotope 95-Mo. The thus obtained enhanced reactivity provides, depending on the exact use of the fuel element, a requirement for less uranium in the fuel and the use of the fuel elements during a longer period in the reactor.06-23-2011
20100061503Pseudo-capacitor structure for direct nuclear energy conversion - Direct nuclear energy conversion into electricity device based on nano-hetero-structures with applications in nuclear reactors and radioisotope batteries. The nano structure may be made by a repeated customized sequence of nano-layers generically called “CIci” The structure may also be made by a series of structures evolved from CIci as nanoplasmon, nanowire, nano-tube. The Structure relies on knock on electron avalanche produced by stopping radiation that is generated by the high electron density conductor material “C” that tunnels through insulator “I” and accumulates in the low density conductor “c”. The “C” material is producing no electrons to cross the associate insulator “i” therefore remains negatively charged by the electron shower, and discharges through a resistor connected to th “C” later. The nanoplasmon structure exhibits thermal direct conversion properties by radiation switched mechanism that is generated by the plasmon-phonon resonance. The device has ultra-capacitive properties when made with carbon nanotubes. The device is useful for a direct conversion nano-battery or for nuclear reactor direct conversion structure. It may also be used as a radiation energy harvesting device when made with actinides for neutro-capture and amplification.03-11-2010
20120039431Process for fused neutron nuclear chain reactions - Fused neutron particles from a multi-neutron particle generator are injected into atomic nuclei that have a core with groups of fused neutron pairs. Nuclear fusion reactions between injected multi-neutron particles and atomic core neutron particle pairs produce binding energy which causes atomic nuclei to fission. Consequently, more binding energy is released and fused neutron particle pairs are ejected from the nucleus. The ejected fused neutron particle pairs then enter nuclei of other atoms to cause nuclear fusion and nuclear fission reactions. More binding energy and more fused neutron particle pairs are released from the nuclei. This is a chain reaction process that can produce nuclear binding energy from almost any element as fuel.02-16-2012
20110080987MANUFACTURING METHOD OF NUCLEAR FUEL PELLET, FUEL ASSEMBLY FOR NUCLEAR REACTOR AND MANUFACTURING METHOD THEREOF AND URANIUM POWDER - Among fuel rods constituting a fuel assembly, Gd compound oxide is added to low Gd containing fuel rods that containing uranium dioxide of which enrichment exceeds 5 wt %. The Gd compound oxide is oxide of gadolinium and rare earth element A except for gadolinium and is expressed as a chemical formula A04-07-2011
20120314831Light Water Reactor TRISO Particle-Metal-Matrix Composite Fuel - A metal matrix, microencapsulated nuclear fuel component includes an integral metal matrix having an outer buffer region and an inner fuel containing region; a multiplicity of nuclear fuel capsules embedded in the fuel containing region of the matrix for encapsulating a nuclear fuel particle and products resulting from nuclear and chemical reactions; and a nuclear fuel particle encapsulated in each of the nuclear capsules.12-13-2012
20120257707Nuclear fuel and method of fabricating the same - A nuclear fuel includes a volume of a nuclear fuel material defined by a surface, the nuclear fuel material including a plurality of grains, some of the plurality of grains having a characteristic length along at least one dimension that is smaller than or equal to a selected distance, wherein the selected distance is suitable for maintaining adequate diffusion of a fission product from a grain interior to a grain boundary in some of the grains, the nuclear fuel material including a boundary network configured to transport the fission product from at least one grain boundary of some of the grains to the surface of the volume of the nuclear fuel material.10-11-2012
20110158374ALLOY AND TUBE FOR NUCLEAR FUEL ASSEMBLY AND METHOD FOR MAKING SAME - The invention concerns an alloy containing equally 0.02 to 0.07% wt. % of the total iron, of chromium or vanadium, 0.8 to 1.3 wt. % of niobium, 100 ppm or less of tin, 1100 to 1700 ppm of oxygen, less than 100 ppm of carbon, 10 to 30 ppm of sulphur and less than 50 ppm of silicon.06-30-2011

Patent applications in class FUEL COMPONENT STRUCTURE

Patent applications in all subclasses FUEL COMPONENT STRUCTURE