Patents
Patents for G21C 3 - Reactor fuel elements or their assemblies; Selection of substances for use as reactor fuel elements (6,332)
06/1987
06/30/1987US4676935 Milling uranium and plutonium dioxides with a propanediol
06/30/1987US4675961 Replacement of split-pin assemblies in guide tubes
06/24/1987EP0226442A1 Latching device for releasably attaching elongate members to top nozzles of nuclear fuel assemblies
06/23/1987US4675154 Flexible mounting member, avoiding excessive side forces on fuel rod spacers
06/23/1987US4675153 Zirconium alloy fuel cladding resistant to PCI crack propagation
06/16/1987US4673545 Hydraulic or pneumatic jaws; non destructive
06/16/1987US4672791 Apparatus for applying an end plug to an end of a fuel rod tube
06/16/1987EP0225511A2 Pressurized water reactor having disconnectable two-piece drive rod assemblies
06/10/1987EP0225114A1 System for ultrasonically cleaning tubes for nuclear fuel rods or similar rods
06/10/1987EP0225089A1 Wear resistant zirconium base alloy rod support arrangement for water reactors
06/10/1987EP0225032A1 Nuclear reactor fuel retainer
06/10/1987EP0224728A1 Boiling water nuclear reactor fuel assembly
06/10/1987EP0144336B1 Combustible assembly with high combustion level for nuclear reactors
06/09/1987US4672162 Electric arc apparatus for severing split-pin assemblies of guide tubes of nuclear reactors
06/09/1987US4671927 Nuclear fuel rod containing a hybrid gadolinium oxide, boron carbide burnable absorber
06/09/1987US4671926 Fuel assembly for a nuclear reactor
06/09/1987US4671924 Hold-down device of fuel assembly top nozzle employing leaf springs
06/09/1987US4671904 Method for producing oxidic sintered nuclear fuel bodies
06/09/1987US4671826 Method of processing tubing
06/02/1987US4670213 Removable top nozzle subassembly for a reconstitutable nuclear fuel assembly
06/02/1987US4670198 Binder system for the manufacture of nuclear fuel pellets, and the method and product thereof
05/1987
05/27/1987EP0223342A1 Locking-tube removal and insertion fixture for use with reconstitutable nuclear fuel assemblies
05/27/1987EP0223200A2 Fuel bundle assembly machine
05/26/1987US4668469 Fastener locking device for attaching guide thimble to fuel assembly bottom nozzle
05/26/1987US4668468 Reactivity control of nuclear fuel pellets by volumetric redistribution of fissile, fertile and burnable poison material
05/26/1987US4668444 Process for the production of isotrophic spherical fuel or absorber elements for high temperature reactors
05/26/1987US4668287 From tetrachlorides, magnesium, magnesium, chloride, linings, drains, sealing, melts
05/26/1987US4667547 Apparatus and method for removing a top nozzle in reconstituting a fuel assembly
05/20/1987EP0222623A1 Fixture for rectifying guide-thimble damage in reconstitutable nuclear fuel assemblies
05/19/1987US4666684 Calcinining ammonium diuranate without condensation of ammonium fluoride from off-gas stream
05/19/1987US4666664 Equalizing hydraulic pressure
05/19/1987US4666663 Nuclear reactor fuel assembly
05/19/1987US4666653 Fuel assembly with cooled guide tubes for a nuclear reactor
05/19/1987US4666639 Process for the production of spherical fuel elements
05/13/1987EP0221641A1 Reconstitutable nuclear fuel assembly
05/12/1987US4664882 Boiling water reactor
05/12/1987US4664881 Zirconium base fuel cladding resistant to PCI crack propagation
05/12/1987US4664880 Wire mesh debris trap for a fuel assembly
05/12/1987US4664879 Guide tube flow restrictor
05/12/1987US4664878 Light water moderator filled rod for a nuclear reactor
05/12/1987US4664875 Replacing on guide thimbles
05/12/1987US4664874 Reusable locking tube insertion and removal fixture and method in a reconstitutable fuel assembly
05/12/1987CA1221775A1 Cooled tube fuel assembly for nuclear reactor
05/05/1987US4663119 Method and apparatus for securing structural tubes in nuclear reactor fuel assemblies
05/05/1987US4663118 Avoids stress of parts with differential thermal expansion
05/05/1987US4663117 Multi-pins in hexagonal wrapper, stabilized by spaced grids
05/05/1987US4663114 Apparatus for handling nuclear fuel assemblies and assembly adapted to such an apparatus
05/05/1987US4663093 Preparation of nuclear fuel spheres by flotation-internal gelation
05/05/1987US4662051 Apparatus for applying an end plug to an end of a fuel rod tube
04/1987
04/29/1987EP0220060A2 Fuel assembly support grids
04/28/1987US4660270 Apparatus and method for applying an end plug to a fuel rod tube end
04/28/1987CA1220935A1 Method and tunnel furnace for sintering blanks
04/28/1987CA1220934A1 Method for treating plutonium oxide and/or plutonium- uranium mixed oxide
04/22/1987EP0219038A2 Nuclear fuel assembly
04/22/1987EP0218924A2 A method of manufacturing sintered nuclear fuel bodies
04/22/1987CN86105616A Method and apparatus for clearing short-circuited, high-voltage cathodes in a sputtering chamber
04/21/1987US4659545 Hydride blister-resistant zirconium-based nuclear fuel rod cladding
04/21/1987US4659544 Unitary structure of tag gas capsule and end cap of nuclear fuel cladding tube
04/21/1987US4659543 Cross brace for stiffening a water cross in a fuel assembly
04/21/1987US4659542 Grid structure for nuclear fuel assembly
04/21/1987US4659541 Nuclear fuel rod support grid with improved multiple dimple arrangement
04/21/1987US4659540 Composite construction for nuclear fuel containers
04/21/1987US4659538 Apparatus for limiting the effect of axial hydraulic flow force exerted on fuel assemblies of water-cooled nuclear reactors
04/21/1987US4659537 A skeleton; guide tubes, fuel rods maintained by grids between end pieces
04/15/1987EP0218353A1 Grid-spring repair apparatus
04/14/1987US4657733 Fuel assembly for a nuclear reactor
04/14/1987US4657729 Solid tags for identifying failed reactor components
04/14/1987US4657725 Core for a nuclear reactor cooled by water under pressure
04/14/1987US4656734 Apparatus for replacement of guide pins of a guiding tube forming part of the top internal equipment of a pressurized water nuclear reactor
04/14/1987CA1220575A1 Void plug for annular fuel pellets
04/07/1987US4656015 Continuous process for the production of powdered uranium dioxide from uranyl nitrate
04/07/1987US4656000 Greater coolant flow rate through core
04/07/1987US4655995 Reversible BWR fuel assembly and method of using same
04/07/1987US4655990 Fuel assemblies for nuclear reactors
04/07/1987US4655978 Method and tunnel furnace for sintering blanks
04/01/1987CN86107200A Fuel assembly support grids
03/1987
03/31/1987US4654194 Inlet nozzle assembly
03/31/1987US4654193 Stress reduction in fuel pins
03/31/1987US4653180 Tool for producing a nuclear reactor fuel assembly
03/26/1987DE3533317A1 Nuclear reactor fuel element
03/26/1987DE3532797A1 Process for operating a nuclear reactor
03/24/1987US4652427 Nuclear reactors
03/24/1987US4652426 Providing coolant-moderator water flow lengthwise
03/24/1987US4652425 Bottom grid mounted debris trap for a fuel assembly
03/24/1987US4652421 Outer grid strap protruding spring repair apparatus
03/24/1987US4652416 For reactors with spectral shift
03/24/1987US4651403 Apparatus and method for loading fuel rods into grids of a fuel assembly
03/18/1987EP0214895A1 Nuclear-fuel assembly with a holding structure and anti-blow-out device
03/17/1987US4649632 Fuel bundle assembly machine
03/11/1987EP0213813A2 Nuclear fuel assembly including a debris trap
03/11/1987EP0213716A2 Method and apparatus for removing short-circuiting deposits from high-voltage cathodes in a sputtering chamber
03/11/1987CN85106420A Individual source positioning mechanism for a nuclear reactor fuel assembly
03/10/1987US4649023 Process for fabricating a zirconium-niobium alloy and articles resulting therefrom
03/10/1987US4649021 Minimizes maldistribution of flow
03/10/1987US4649020 Nuclear fuel assembly and nuclear reactor operating process comprising application thereof
03/04/1987EP0212902A2 Method of removing and replacing locking screws in a nuclear fuel assembly
03/04/1987EP0212351A1 Fuel rod for a nuclear-fuel assembly
03/04/1987EP0211854A1 Fuel element for nuclear reactor.
03/03/1987US4646431 Device for positioning hair pin springs on plates, more especially for fuel assembly grids
03/03/1987US4646415 Device and method for unfastening and lifting a top nozzle subassembly from a reconstitutable fuel assembly
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