Patents
Patents for G21C 21 - Apparatus or processes specially adapted to the manufacture of reactors or parts thereof (1,254)
01/1998
01/27/1998US5711826 Spraying a porous preform with zirconium alloys of different composition to form a multilayer structure, consolidation, cross-section reduction, heat treatment
01/14/1998CN1170473A Manufacturing ceramic articles
12/1997
12/23/1997US5700988 Device for fixing in a fluid tight manner a through tube in a dome-shaped wall of a component of a nuclear reactor
12/16/1997US5699393 Fuel assembly loading installation
11/1997
11/06/1997WO1997040659A1 Fuel boxes and a method for manufacturing fuel boxes
11/04/1997US5684845 Multi-axis spacer grid keying fixture
10/1997
10/29/1997CN1036255C Apparatus for welding structural components of nuclear fuel assembly
10/23/1997WO1997039455A1 Process for fabricating a nuclear fuel rod cladding
10/23/1997CA2251133A1 Process for fabricating a nuclear fuel rod cladding
10/14/1997US5677937 Fuel element for pressurized-water reactor with guide tubes finally heat-treated in two steps
10/01/1997EP0797828A1 Manufacturing ceramic articles
09/1997
09/17/1997EP0795876A2 Apparatus and methods for sealing end plugs for nuclear fuel rods
09/10/1997EP0701734B1 Fission products retaining nuclear fuel
08/1997
08/05/1997US5654993 Fuel element for pressurized--water reactor with guide tubes finally heat-treated in two steps
06/1997
06/24/1997US5642390 Uranium-containing nuclear-fuel sintered pellet
05/1997
05/07/1997EP0772204A1 Method of producing nuclear fuel pellet
04/1997
04/23/1997EP0714547B1 Plant for loading fuel assemblies
04/17/1997WO1997014155A1 Apparatus for inspecting nuclear fuel assemblies
04/15/1997US5620536 Forging, rolling, extruding, heat treating zirconium or alloy to form inner and outer billets to form tube blank, causing beta phase transformation within first component
03/1997
03/26/1997EP0674800B1 Manufacture of zirconium cladding tube with internal liner
03/11/1997US5609057 Method and system for in-line detection of moisture in uranium-containing powders
03/06/1997DE19532813A1 Molybdenum-free sintered nuclear fuel pellets
03/05/1997EP0760519A1 Process for manufacturing nuclear fuel pellets based on (U,PU)02 with addition of an organic sulphur compound
02/1997
02/25/1997US5606583 Guide tube for a nuclear fuel assembly, and a method of manufacturing such a tube
01/1997
01/15/1997EP0671988B1 Method of manufacturing a filter plate for the foot of a nuclear-fuel element, and a fuel element fitted with such a filter plate
01/09/1997WO1997001175A1 Apparatus for handling nuclear fuel rods
12/1996
12/03/1996US5581589 Method and apparatus for producing gel particles
11/1996
11/12/1996US5574761 Fuel channels with off-centerline welds
10/1996
10/01/1996CA2172905A1 Sleeve for installation in a parent tube by means of a sleeve expander
09/1996
09/25/1996CN1131998A Plant for loading fuel assemblies
09/15/1996CA2144613A1 Tool for remotely removing and inserting a spring clip
08/1996
08/07/1996EP0725155A2 Precipitation hardening type single crystal austenitic steel, and usage the same
08/01/1996WO1996023309A1 Control rod for monitoring the reactivity of a reactor core of a nuclear power station, use of the control rod in a boiling water reactor and process for producing a control rod
07/1996
07/30/1996US5540001 Device for removing dust from nuclear fuel pellets
07/04/1996DE19546961A1 Prepn. of large particle diameter nuclear fuel powder
07/03/1996CN1125995A Fission product retaining nuclear fuel
07/02/1996US5533077 Method for preventing scratches on fuel rods during fuel bundle assembly
06/1996
06/26/1996CN1032124C Equipment and unit for welding by laser fuel rods or like
06/20/1996WO1996018999A1 Manufacturing ceramic articles
06/20/1996CA2206531A1 Manufacturing ceramic articles
06/19/1996CN1032048C Equipment for drilling and/or closing off by laser the seal weld hole of fuel rod
06/05/1996EP0714547A1 Plant for loading fuel assemblies
05/1996
05/14/1996US5517540 Two-step process for bonding the elements of a three-layer cladding tube
05/14/1996US5516999 Process and device for fixing in a fluidtight manner a through tube in a dome-shaped wall of a component of a nuclear reactor
05/07/1996US5514306 Process to reclaim UO2 scrap powder
04/1996
04/30/1996US5513230 Fuel rod for a nuclear reactor and welding apparatus for producing the fuel rod
04/17/1996EP0706706A1 Fuel element for pressurized-water reactor with guide tubes finally heat-treated in two steps
04/16/1996US5509039 Automatic pellet stack length recording switch
03/1996
03/20/1996EP0701734A1 Fission product retaining nuclear fuel
02/1996
02/06/1996US5489184 Pellet loader
01/1996
01/03/1996EP0690454A1 Method for fabricating mixed oxide fuel
12/1995
12/27/1995EP0689210A1 Spring retention system for upper tie plate and fuel bundle channel in a nuclear reactor assembly
11/1995
11/21/1995US5469481 Method of preparing fuel cladding having an alloyed zirconium barrier layer
11/07/1995US5465281 Insulated protective coating for mitigation of stress corrosion cracking of metal components in high-temperature water
10/1995
10/13/1995CA2144614A1 Spacer insertion tool
10/12/1995CA2145895A1 Insulated protective coating for mitigation of stress corrosion cracking of metal components in high-temperature water
10/04/1995EP0674800A1 Manufacture of zirconium cladding tube with internal liner.
09/1995
09/28/1995DE19509049A1 Nuclear fuel cladding tube mfr.
09/28/1995DE19509046A1 Three=layer nuclear fuel cladding tube mfr.
09/20/1995EP0671988A1 Method of manufacturing a filter plate for the foot of a nuclear-fuel element, and a fuel element fitted with such a filter plate.
09/19/1995US5450943 Apparatus for handling elongate articles
09/13/1995CN1108420A A guide tube for a nuclear fuel assembly, and a method of manufacturing such a tube
09/05/1995US5448034 Weld shape control system for TIG welding of small pressurization hole
08/1995
08/24/1995DE4401603A1 Mfr. of fuel assembly lattice members incorporating deflector vanes.
08/23/1995CN1107248A Loading nuclear fuel pellets into cladding tubes
07/1995
07/25/1995US5436946 Spring retention of upper tie plate and fuel bundle channel in a nuclear reactor assembly
07/18/1995US5434897 Cladding, nuclear fuels
07/05/1995EP0661719A1 Guide tube for nuclear fuel assembly and fabrication process for such a tube
06/1995
06/16/1995CA2137964A1 Shipping shim for nuclear reactor fuel assemblies
06/13/1995US5425071 Loading nuclear fuel pellets into cladding tubes
05/1995
05/30/1995US5420899 Grapple for a fuel bundle channel
04/1995
04/26/1995EP0650168A1 Method for preventing scratches on fuel rods during fuel bundle assembly
03/1995
03/30/1995CA2133014A1 Method and system for in-line detection of moisture in uranium-containing powders
03/30/1995CA2132580A1 Urania-rare earth composition and articles formed therefrom
03/28/1995US5401933 Method for welding of end plug of control rod
03/28/1995US5400498 Apparatus for removing keys from support grid
03/14/1995US5398264 Grid welding fixture for a spacer grid
03/07/1995US5396526 Apparatus for removing keys from support grid
03/02/1995WO1995006318A1 Plant for loading fuel assemblies
02/1995
02/16/1995WO1995004994A1 Sintered compact made of uranium-containing nuclear fuel
02/14/1995US5390218 Process for preparing a fuel pellet for nuclear reactor
01/1995
01/31/1995US5386444 Fuel rod loading apparatus
01/26/1995DE4324286A1 Process for producing homogeneous metal mixtures containing zirconium and actinide elements with or without lanthanide elements
01/25/1995EP0635846A1 Method for manufacturing nuclear fuel pellet
01/18/1995EP0634752A1 Method for making fuel cladding having zirconium barrier layers
01/17/1995US5383228 Method for making fuel cladding having zirconium barrier layers and inner liners
01/12/1995WO1995001639A1 Fuel element for pressurized-water reactor with guide tubes finally heat-treated in two steps
01/03/1995US5377532 Method and system for in-line detection of moisture in uranium-containing powders
12/1994
12/27/1994US5377236 Method and apparatus for measuring rod end squareness
12/27/1994US5375756 Apparatus for assembling and welding final end plugs to nuclear fuel-containing cladding tubes and inspecting the welds, all on an automated basis
12/22/1994WO1994029874A1 Fission product retaining nuclear fuel
12/20/1994US5374800 Method for welding of fuel rod
12/07/1994EP0627743A1 Inserting an end plug into a fuel pin cladding tube
12/06/1994US5369866 Method for insertion or removal of fuel rods into or from a grid of a nuclear fuel assembly
11/1994
11/30/1994EP0626465A1 Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture
11/30/1994EP0626464A1 Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture
11/17/1994EP0624883A1 Sealing process and device for a feedthrough tube in a convex wall of a nuclear reactor component
11/13/1994CA2123381A1 Process and device for fixedly sealing pipes through bulged walls of a nuclear reactor component
11/01/1994US5361282 Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture
10/1994
10/25/1994US5359633 Assembly method and grid for nuclear fuel assembly
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