Patents
Patents for G21C 21 - Apparatus or processes specially adapted to the manufacture of reactors or parts thereof (1,254)
01/1992
01/07/1992US5078797 Process for obtaining a plate of zr alloy comprising a portion of excess thickness and its use
12/1991
12/03/1991US5069865 Method of forming a gripper cavity in a fuel rod end plug
11/1991
11/27/1991EP0458360A1 Fuel assembly comprising a plurality of fuel rods
11/26/1991US5068081 Method of inserting fuel rods into a nuclear fuel assembly grid
10/1991
10/02/1991EP0449479A1 Blending and loading apparatus for constituents of varying densities
09/1991
09/24/1991CA1289505C Apparatus for handling bodies of generally cylindrical configuration
09/17/1991US5048666 Nuclear fuel pellet transfer escalator
08/1991
08/27/1991US5043133 Automated nuclear fuel rod pattern loading system
07/1991
07/02/1991US5028382 Scratch preventing method of assembling nuclear fuel bundles, and the assembly
07/02/1991US5027635 Channel hot-forming apparatus
06/1991
06/18/1991US5024574 Random fuel pellet vacuum transfer apparatus
06/18/1991US5024559 Pure tungsten carbide and cobalt alloy; nonchipping
06/11/1991US5022142 Apparatus and method for loading pellets into fuel rods
05/1991
05/28/1991US5019326 Pellet handling and external inspection equipment
03/1991
03/26/1991US5002723 Nuclear fuel element
03/19/1991US5001324 Precision joint tracking laser welding system
03/05/1991USH897 Boron-copper neutron absorbing material and method of preparation
02/1991
02/26/1991CA1280773C Stack forming apparatus
02/19/1991US4994231 Apparatus for blending constituents of varying densities
02/05/1991US4989433 Method and means for metal sizing employing thermal expansion and contraction
01/1991
01/23/1991EP0409405A2 Nuclear fuel element, and method of forming same
01/02/1991EP0405171A1 Random fuel pellet vacuum transfer apparatus
01/02/1991EP0405170A1 End stop for welding sealing plugs of nuclear fuel rods
12/1990
12/25/1990US4980535 Control rod absorber section fabrication by square tube configuration and dual laser welding process
12/25/1990US4980119 Multizone automated nuclear fuel rod loading system
11/1990
11/20/1990US4971753 Nuclear fuel element, and method of forming same
11/20/1990US4971750 End stop for welding sealing plugs of nuclear fuel rods
11/15/1990WO1990013898A1 Method of sealing a fuel rod by welding
10/1990
10/30/1990US4966745 Fuel rod gripper end cap for minimizing impact with grid cell dimples
10/23/1990US4965024 Production of ceramic nuclear fuel pellets
10/16/1990US4963317 Hot isostatic pressing forming diffusion bond between two ductile metal cladding plates enclosing fissionable compound
10/10/1990EP0391642A2 Nuclear fuel rod loading system
10/02/1990US4960559 Capture row storage tray for holding collated rows of nuclear fuel pellets
09/1990
09/11/1990US4956079 Apparatus for transporting objects
09/11/1990CA1274022A1 Process for placing a bundle of rods of a nuclear fuel assembly into a case and installation for performing this process
09/11/1990CA1273891A1 Apparatus for controlling the conveyance of articles
09/05/1990EP0385719A2 Method and apparatus for metal sizing employing thermal expansion and contraction
09/05/1990EP0385195A1 Nuclear fuel pellet transfer arrangement
07/1990
07/17/1990US4942014 Nuclear fuel pin fabrication
05/1990
05/30/1990EP0370303A2 Nuclear fuel rod wiping apparatus
05/22/1990US4927313 Nuclear fuel pellet sintering boat unloading apparatus and method
05/15/1990US4925620 Control rod absorber section fabrication by square tube configuration and dual laser welding process
05/01/1990US4921663 End plug weld for nuclear fuel rod
05/01/1990CA1268562A1 Device for grasping a pencil cluster in a nuclear fuel assembly
04/1990
04/04/1990EP0361916A2 Control rod absorber section fabrication by square tube configuration and laser welding process
04/04/1990EP0361891A2 Apparatus for assembling and welding end plugs to nuclear fuel cladding tubes and inspecting the end plug welds on an automated basis
04/04/1990EP0361794A1 Apparatus for loading nuclear fuel rods
04/03/1990US4913177 Concurrent moving and rotation of tube; toweling
03/1990
03/21/1990EP0359683A1 Method for producing a neutron absorber pellet, pellet obtained and use
03/20/1990US4909544 Apparatus for the transfer of granular, pulverulent or liquid materials
01/1990
01/31/1990EP0353170A1 Method of producing a metallic neutron absorber element, and element obtained
01/30/1990US4897858 Nuclear fuel pellet collating system and method
01/23/1990US4895694 Apparatus for aligning nuclear fuel pellets
01/16/1990US4894848 Automated nuclear fuel rod pattern loading system
12/1989
12/27/1989EP0347638A2 Alloy coated nuclear fuel cladding
12/13/1989EP0345499A2 End plug weld for nuclear fuel rod
12/06/1989EP0344527A2 Nuclear fuel rod end plug welding apparatus and method
12/05/1989CA1263526A1 Binder system for the manufacture of nuclear fuel pellets, and the method and product thereof
11/1989
11/14/1989US4880597 Alloy coated fuel cladding
10/1989
10/10/1989US4872545 Apparatus for handling bodies of generally cylindrical configuration
09/1989
09/27/1989EP0334069A2 Nuclear fuel pellet column collating system
09/20/1989EP0211853B1 Device for sheathing fuel pellets
09/12/1989US4865804 Fuel rod end plug
08/1989
08/30/1989EP0330354A1 Apparatus for handling elongate articles
08/30/1989EP0330348A2 Apparatus for transporting objects
08/22/1989US4859276 Tube flush etching, rinsing, drying, inspecting and plugging subsystem and method in a tube manufacturing system
08/15/1989US4857260 Apparatus for assembling and welding end plugs to nuclear fuel cladding tubes and inspecting the end plug welds on an automated basis
08/02/1989EP0325914A2 Method and apparatus for providing identification indicia on nuclear fuel rods
07/1989
07/18/1989US4849156 Nuclear fuel pin fabrication
07/11/1989US4847038 Procedure for complete replacement of a steam generator of a pressurized water nuclear reactor
07/05/1989EP0322600A2 Gage and method for determining bulge orientation at a bulge joint between a grid sleeve and a guide thimble of a nuclear fuel assembly
06/1989
06/27/1989US4842808 Nuclear fuel pellet collating system
06/06/1989US4837419 Fuel rod end plug welding apparatus and method
05/1989
05/23/1989CA1254378A1 Fabrication of nuclear fuel pellets
05/16/1989US4830565 Robot gripper mechanism and method for sampling nuclear fuel pellets
05/02/1989US4826630 Burnable neutron absorbers
04/1989
04/26/1989EP0313257A2 Production of ceramic nuclear fuel pellets
04/25/1989US4824634 Coating on zirconium-tin alloy cladding tube
04/18/1989US4822987 Method and apparatus for providing fuel rod identification to permit traceability during manufacture and use
04/18/1989CA1252749A1 Dump assembly
02/1989
02/28/1989US4807734 Pellet-press-to-sintering-boat nuclear fuel pellet loading apparatus
02/14/1989US4804077 Tube end processing system
02/07/1989US4803041 Process for the recycling of nuclear fuel pellets previously irradiated in a fast neutron nuclear reactor
01/1989
01/25/1989EP0300246A2 A pellet-press-to-sintering-boat nuclear fuel pellet loading apparatus
01/24/1989US4800061 Apparatus for loading fuel rods into grids of nuclear fuel assemblies
01/11/1989EP0298859A1 Device for the transfer of bulk materials or liquids
01/11/1989EP0298596A2 Nuclear fuel pin fabrication
01/10/1989US4797248 Gripping apparatus for a group of rods of nuclear fuel assembly
01/03/1989US4795341 Method and tunnel furnace for sintering blanks
12/1988
12/27/1988US4793962 Process for placing a bundle of rods of a nuclear fuel assembly into a case and installation for performing this process
12/07/1988EP0294070A2 Apparatus for handling bodies of generally cylindrical configuration
11/1988
11/30/1988EP0292716A2 Tube end processing system
11/29/1988US4788026 Nuclear fuel assembly grid sleeve/guide thimble bulge orientation gage and inspection method
11/22/1988CA1245182A1 Apparatus for coating nuclear fuel pellets with a burnable absorber
11/09/1988EP0289732A2 Reconstitutable nuclear fuel assembly
11/02/1988EP0289388A1 Method for the integral replacement of a steam generator by a pressurized-water nuclear reactor
10/1988
10/05/1988EP0284814A2 Nuclear fuel rod loader for pulling fuel rods into a fuel assembly skeleton
09/1988
09/20/1988US4772446 Gripper assembly for inserting and removing burnable absorber rods and thimble plugs in a nuclear reactor fuel assembly
09/13/1988US4770847 Control of differential growth in nuclear reactor components by control of metallurgical conditions
08/1988
08/23/1988US4765453 Pellet-press-to-sintering-boat nuclear fuel pellet loading system
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