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Induced nuclear reactions: processes, systems, and elements March listing by industry category 03/09

20090080585 - Reduced order stress model for online maneuvering, diagnostics of fuel failure and design of core loading patterns of light water reactors: The invention is principally directed to a reduced order model, XEDOR, facilitating the prediction of and the diagnostics of pellet-clad interaction stress-corrosion-cracking failure of nuclear fuel rods. The invention more particularly relates to assessment of susceptibility to PCI failure for guidance in the design of fuel loading in nuclear reactors.... Agent: Floyd E. Ivey Ivey Law Offices, P.s. Corp.

20090080586 - Reactivity control rod for core, core of nuclear reactor, nuclear reactor and nuclear power plant: In a nuclear reactor in which a primary coolant is contained, the primary coolant moves upwardly from the core by an operation thereof. An annular steam generator is arranged in an upper side of the core into which the upwardly moving primary coolant flows and transfers heat in the primary... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090080587 - Nuclear 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,... Agent: Searete LLC Clarence T. Tegreene

20090080588 - Nuclear 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,... Agent: Searete LLC Clarence T. Tegreene

20090080589 - Core catcher, manufacturing method thereof, reactor containment vessel and manufacturing method thereof: Core debris generated during a molten reactor core in a reactor containment vessel penetrating the reactor containment vessel is configured to be caught by a core catcher located beneath the reactor containment vessel which has a main body having first stage cooling water channels and second stage surrounded by cooling... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20090080590 - Method and apparatus to shield a nuclear fuel assembly with removable debris shield in upper tie: A method to capture, retain and remove debris falling into a nuclear reactor fuel bundle assembly including a bundle of fuel rods mounted below an upper tie plate and housed in a hollow metal channel, the method includes: inserting a debris shield in the upper tie plate; maintaining the shield... Agent: Nixon & Vanderhye P.C.

20090080591 - Nuclear fuel provided with a coating: This invention relates to a method of preparing a nuclear fuel including the step of depositing a coating which includes fluorine, or at least one compound thereof, around a kernel (12) of fissile material. The invention extends to a coated nuclear fuel particle (10).... Agent: Morriss Obryant Compagni, P.C.

20090080592 - Swelling-resistant nuclear fuel: A nuclear fuel according to one embodiment includes an assembly of nuclear fuel particles; and continuous open channels defined between at least some of the nuclear fuel particles, wherein the channels are characterized as allowing fission gasses produced in an interior of the assembly to escape from the interior of... Agent: Llnl/zilka-kotab John H. Lee, Assistant Laboratory Counsel

20090074128 - Non-intrusive method to identify presence of nuclear materials using energetic prompt neutrons from photon-induced fission: Methods and systems for non-intrusively detecting the existence of fissile materials in a container via the measurement of energetic prompt neutrons are disclosed. The methods and systems use the unique nature of the prompt neutron energy spectrum from photo-fission arising from the emission of neutrons from almost fully accelerated fragments... Agent: Foley Hoag, LLP Patent Group, World Trade Center West

20090067564 - System for exchanging a control rod drive: P

20090067565 - Nuclear engineering plant and closure apparatus for its containment: A nuclear engineering plant has a containment, whose interior chamber is subdivided by a wall into a systems chamber and an operating chamber which is accessible during normal operation. The containment ensures a particularly high operational reliability, in particular also in incident situations, in which hydrogen is released in the... Agent: Lerner Greenberg Stemer LLP

20090067566 - Fuel assembly and plug-in distance element: This invention relates to nuclear engineering and may be used in structures of nuclear fuel assemblies, especially those used in PWR and BWR nuclear reactors. A fuel assembly comprises spacing grids comprising cells formed by orthogonal crossing plates. An insertable spacing element is installed in each cell, which is designed... Agent: Patenttm.us

20090060110 - Device and method for shutting off an orifice of a bundle wrapper of a steam generator of a pressurized-water nuclear reactor: P

20090060111 - Channel seating tool for nuclear fuel assembly and method for seating channel on the assembly: A tool to slide a channel on a nuclear reactor fuel bundle assembly, the tool includes: a plate having a slot to receive a handle of the fuel bundle and a lower surface that engages an upper edge of the channel; at least one post extends up from the plate,... Agent: Nixon & Vanderhye P.C.

20090060112 - Boiling water nuclear reactor and emergency core cooling system of the same: A boiling water nuclear reactor comprises: a reactor containment vessel including a dry well and a wet well; a vent pipe connecting the dry well and the pressure suppression pool; a gravity-driven water injection pool to hold boric acid aqueous solution; an emergency core water-injection piping system for causing the... Agent: Foley And Lardner LLP Suite 500

20090060113 - Debris shield upper tie plate for nuclear fuel assembly and method to shield assembly from debris: A nuclear reactor fuel bundle assembly including: a fuel bundle including an array of fuel rods and water rods mounted in an upper tie plate and housed in walls of a channel, and a pore type debris shield mounted at least partially in the channel, above or below the upper... Agent: Nixon & Vanderhye P.C.

20090060114 - Debris shield for upper tie plate in a nuclear fuel bundle and method for filtering debris: A nuclear reactor fuel assembly including: an upper tie plate having apertures to receive and support fuel rods of a fuel bundle; the fuel bundle includes an array of the fuel rods mounted and housed in the walls of a channel, and a load bearing or non-load bearing debris shield... Agent: Nixon & Vanderhye P.C.

20090060115 - Method, use and device concerning cladding tubes for nuclear fuel and a fuel assembly for a nuclear pressure water reactor: A method of producing a cladding tube for nuclear fuel for a nuclear pressure water reactor includes forming a tube which at least principally consists of a cylindrical tube component of a zirconium-based alloy, where the alloying element, except for zirconium, which has the highest content in the alloy is... Agent: Michaud-duffy Group LLP

20090060116 - Fuel rod of nuclear fuel assembly having vase-like compression spring adapted to increase internal volume thereof: The present invention relates to a fuel rod of a nuclear fuel assembly having a vase-like compression spring adapted to increase the internal volume thereof wherein when the vase-like compression spring is inserted into a cladding tube, it has a relatively smaller volume occupied inside the fuel rod when compared... Agent: Sughrue Mion, PLLC

20090060117 - Guide thimble of dual tube type structure nuclear fuel assembly: Disclosed herein is a guide thimble of a nuclear fuel assembly, which is capable of improving the cooling performance and the stability of a nuclear fuel, preventing a flow split in dual-cooling nuclear fuel rod and guide thimble sub channels for obtaining high combustion degree and high power, and minimizing... Agent: Merchant & Gould PC