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Class Information
Number: 976/DIG.231
Name: Nuclear technology > Monitoring; testing; maintaining [g21c-17/00] > Devices or arrangements for monitoring or testing fuel or fuel elements (e.g., for burn-up, for contamination, for leak-tightness) not during reactor operation [g21c-17/06] *** (dig. 235, dig. 236 take precedence) (detection of leaking fuel elements during reactor operation dig. 224)
Description:










Sub-classes under this class:

Class Number Class Name Patents
976/DIG.233 Burn-up control [g21c-17/06d] *** (dig. 234 takes precedence) 3
976/DIG.234 Control of spherical elements [g21c-17/06f] 2
976/DIG.232 Leak-tightness control [g21c-17/06b] *** (dig. 234 takes precedence) 38


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
5108693 Non-destructive dimensional and flaw inspection of thin wall tube weldments Apr. 28, 1992
5108692 Non-destructive testing of nuclear fuel rods Apr. 28, 1992
5098642 System for identification of components Mar. 24, 1992
5089213 Nuclear fuel assembly identification code reader Feb. 18, 1992
5066452 Ultrasonic profilometry system for control rod wear Nov. 19, 1991
5063779 Non-destructive dimensional and flaw inspection of thin wall tube weldments Nov. 12, 1991
5030410 Vacuum system for nuclear reactor guide tube Jul. 9, 1991
5023046 Drive unit for inspecting nuclear fuel rods Jun. 11, 1991
5019326 Pellet handling and external inspection equipment May. 28, 1991
5011206 Device for extracting foreign pieces or particles from fuel assemblies of a nuclear reactor Apr. 30, 1991
4994232 Method of inspecting the quality of nuclear fuel rod ends Feb. 19, 1991
4988476 Method of and apparatus for evaluating deformation of channel box of fuel assembly for use in nuclear reactor Jan. 29, 1991
4988475 Device for checking the axial retention force on a peripheral fuel rod of a fuel assembly of a nuclear reactor Jan. 29, 1991
4986953 Device for the support and positioning of means for checking and tools for working on fuel assemblies Jan. 22, 1991
4978495 Nuclear fuel pellet surface defect inspection apparatus Dec. 18, 1990
4957691 Apparatus for inspecting the quality of nuclear fuel rod ends Sep. 18, 1990
4925619 Rod pressurization sensing apparatus May. 15, 1990
4918991 Method for sampling nuclear fuel pellets with a robot gripper mechanism Apr. 24, 1990
4913177 Nuclear fuel rod wiping apparatus and method Apr. 3, 1990
4902467 Non-destructive testing of nuclear fuel rods Feb. 20, 1990
4894201 Nuclear fuel pellet surface defect inspection apparatus Jan. 16, 1990
4892701 Device for measuring nuclear reactor fuel assembly grids Jan. 9, 1990
4865800 Fuel assembly grid inspection method Sep. 12, 1989
4862079 Magnetic method and apparatus for measuring and locating wear of control rods in nuclear reactors Aug. 29, 1989
4847042 Apparatus for storing nuclear reactor fuel assemblies in a water pit Jul. 11, 1989
4847036 Apparatus for the inspection of a nuclear reactor fuel assembly Jul. 11, 1989
4847037 Apparatus for the inspection of nuclear reactor fuel rods Jul. 11, 1989
4830565 Robot gripper mechanism and method for sampling nuclear fuel pellets May. 16, 1989
4828782 Apparatus and method for inspection of fuel assemblies May. 9, 1989
4822987 Method and apparatus for providing fuel rod identification to permit traceability during manufacture and use Apr. 18, 1989
4822552 Method and apparatus for passively gamma scanning a nuclear fuel rod Apr. 18, 1989
4816207 Method for checking the dimensions of a fuel assembly for nuclear reactors Mar. 28, 1989
4804093 Method and apparatus for mechanically classifying rolling bodies Feb. 14, 1989
4787715 Fuel assembly grid inspection apparatus Nov. 29, 1988
4777011 Method and device for checking the dimensions of a fuel assembly for nuclear reactors Oct. 11, 1988
4773799 Apparatus for sampling a section of tube in a nuclear fuel assembly Sep. 27, 1988
4762670 Cleaning apparatus for atomic reactor control rod driving means (CRD) Aug. 9, 1988
4759897 System for determining bow, twist and tilt of a nuclear fuel assembly Jul. 26, 1988
4747996 Apparatus and method for adjusting the elevation of fuel rods in a nuclear reactor fuel assembly May. 31, 1988
4741878 Process and device for inspecting control rod clusters for nuclear fuel assemblies May. 3, 1988
4735541 Tube drive apparatus employing flexible drive belts Apr. 5, 1988
4735766 Method and apparatus for testing vertically extending fuel rods of water-cooled nuclear reactors which are combined in a fuel rod cluster Apr. 5, 1988
4728483 Apparatus for integrated fuel assembly inspection system Mar. 1, 1988
4724594 Apparatus for adjusting the elevation of fuel rods in a nuclear reactor fuel assembly Feb. 16, 1988
4724607 Apparatus for rebuilding nuclear fuel assemblies Feb. 16, 1988
4709579 Measurement of moisture content Dec. 1, 1987
4699750 Apparatus for storage, retrieval and deployment of drag gages used in fuel assembly inspection Oct. 13, 1987
4696190 Tube straightness checking apparatus Sep. 29, 1987
4696784 System for manipulating radioactive fuel rods within a nuclear fuel assembly Sep. 29, 1987
4689193 Mechanism for testing fuel tubes in nuclear fuel bundles Aug. 25, 1987

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