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Class Information
Number: 976/DIG.68
Name: Nuclear technology > Reactor fuel elements and their assemblies; selection of substances for use as reactor fuel elements [g21c-3/00] > Assemblies of number of fuel elements in the form of a rigid unit [g21c-3/30] > Bundles of parallel pin-, rod-, or tube-shaped fuel elements [g21c-3/32] > Assembling the bundle; exchange of elements in the bundle [g21c-3/32l]
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
4913559 Fuel assembly alignment pin straightening method Apr. 3, 1990
4909980 Electromagnetic apparatus for positioning objects located behind a conductive wall Mar. 20, 1990
4905546 Twist-proof mechanical connecting assembly Mar. 6, 1990
4895695 Method for loading fuel rods into grids of nuclear fuel assemblies Jan. 23, 1990
4894848 Automated nuclear fuel rod pattern loading system Jan. 16, 1990
4867940 Electromagnetic method for positioning objects located behind a conductive wall Sep. 19, 1989
4863681 Replacement rod Sep. 5, 1989
4859408 Method and apparatus for securing structural tubes in nuclear reactor fuel assemblies Aug. 22, 1989
4832901 Nuclear reactor fuel assembly mixing vane repair method May. 23, 1989
4824632 Fuel assembly alignment pin straightening device Apr. 25, 1989
4822554 Reconstitution and repair system for nuclear fuel rod assemblies Apr. 18, 1989
4819524 Screw installation plate for use in a fuel assembly repair and reconstitution system Apr. 11, 1989
4818473 Fuel bundle Apr. 4, 1989
4814138 Method for repairing a nuclear reactor fuel assembly and a replacement rod for performing the method Mar. 21, 1989
4800061 Apparatus for loading fuel rods into grids of nuclear fuel assemblies Jan. 24, 1989
4799312 Tool for replacing locking screws in a nuclear fuel assembly Jan. 24, 1989
4791801 Reversible fuel assembly grid tab repair tool Dec. 20, 1988
4788026 Nuclear fuel assembly grid sleeve/guide thimble bulge orientation gage and inspection method Nov. 29, 1988
4776198 Method and apparatus for securing structural tubes in nuclear reactor fuel assemblies Oct. 11, 1988
4774752 Fuel assembly repair system and method Oct. 4, 1988
4772446 Gripper assembly for inserting and removing burnable absorber rods and thimble plugs in a nuclear reactor fuel assembly Sep. 20, 1988
4770846 Replacement support pin for guide tubes in operating plants Sep. 13, 1988
4760637 Reduced stress fuel assembly fabrication apparatus and method Aug. 2, 1988
4747997 Nuclear fuel rod loader for pulling fuel rods into a fuel assembly skeleton May. 31, 1988
4740351 Method of and arrangement for protecting nuclear fuel assembly Apr. 26, 1988
4738820 Nuclear fuel assembly bottom nozzle attachment system allowing reconstitution Apr. 19, 1988
4738821 Reconstitutable nuclear fuel assembly having locking tubes with dimples Apr. 19, 1988
4736613 Nuclear reactor fuel assembly mixing vane repair apparatus Apr. 12, 1988
4732730 Stuck fuel rod capping sleeve Mar. 22, 1988
4730388 Replacement of split-pin assemblies in nuclear reactor Mar. 15, 1988
4729867 Spring retainer apparatus and method for facilitating loading of fuel rods into a fuel assembly grid Mar. 8, 1988
4724636 Grinding tool for use in a fuel assembly repair and reconstitution system Feb. 16, 1988
4716017 Apparatus for securing structural tubes in nuclear reactor fuel assemblies Dec. 29, 1987
4716018 End plug with truncated tapered leading end configuration Dec. 29, 1987
4715111 Remote repair system for nuclear fuel rod assemblies Dec. 29, 1987
4707326 Arrangement and method for attaching and reattaching a top nozzle in a reconstitutable nuclear fuel assembly Nov. 17, 1987
4704246 Crimping Nov. 3, 1987
4702882 Quick disconnect top nozzle for a nuclear fuel assembly Oct. 27, 1987
4702883 Reconstitutable fuel assembly having removable upper stops on guide thimbles Oct. 27, 1987
4699759 Double lock joint for attaching top nozzle to guide thimbles of nuclear fuel assembly Oct. 13, 1987
4699760 Fuel assembly skeleton with structural and non-structural top nozzle/guide thimble joints Oct. 13, 1987
4699758 Reusable locking tube in a reconstitutable fuel assembly Oct. 13, 1987
4699761 Integral reusable locking arrangement for a removable top nozzle subassembly of a reconstitutable nuclear fuel assembly Oct. 13, 1987
4697322 Method and device for repairing fuel assemblies of boiling-water nuclear reactors Oct. 6, 1987
4692304 Removable and reusable locking pin for top nozzle assembly and disassembly Sep. 8, 1987
4688416 Fixture and method for rectifying damaged guide thimble insert sleeves in a reconstitutable fuel assembly Aug. 25, 1987
4687631 Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly Aug. 18, 1987
4687630 Top nozzle and guide thimble joint structure in a nuclear fuel assembly Aug. 18, 1987
4684498 Guide thimble captured locking tube in a reconstitutable fuel assembly Aug. 4, 1987
4684499 Burnable absorber rod releasable latching structure Aug. 4, 1987

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