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Class Information
Number: 976/DIG.212
Name: Nuclear technology > Monitoring; testing; maintaining [g21c-17/00] > Remote inspection of vessels (e.g., pressure vessels) [g21c-17/00d] > Inspection of inner surfaces of vessels [g21c-17/00d2]

Patents under this class:

Patent Number Title Of Patent Date Issued
4795606 Inspection systems Jan. 3, 1989
4752435 Scanning devices Jun. 21, 1988
4728482 Method for internal inspection of a pressurized water nuclear reactor pressure vessel Mar. 1, 1988
4686078 Method and apparatus for displacing a reactor weld scanner assembly by variable buoyancy Aug. 11, 1987
4684492 Repair fixture Aug. 4, 1987
4668981 Nuclear reactor visual inspection system May. 26, 1987
4661220 Method for local cleaning of surfaces on a nuclear reactor which are coated with oxides or other corrosion products, in connection with inspection Apr. 28, 1987
4645637 Manipulator for the inspection of pressure vessels open at the top thereof Feb. 24, 1987
4585610 Apparatus for inspecting the interior of a reactor vessel Apr. 29, 1986
4526037 Nozzle inner radius inspection system Jul. 2, 1985
4505874 Vessel inspection boom Mar. 19, 1985
4501716 Apparatus for inspecting the interior of a reactor vessel Feb. 26, 1985
4425298 Baffle maintenance apparatus Jan. 10, 1984
4421715 Baffle maintenance apparatus Dec. 20, 1983
4311556 Method and system for inspection of inside of nuclear reactor vessel Jan. 19, 1982
4302772 Device for the televisual inspection of the inner surface of a closed cylindrical vessel Nov. 24, 1981
4302286 Reactor vessel in-service inspection assembly and ultrasonic centering device Nov. 24, 1981
4255972 Device for the inspection of welds Mar. 17, 1981
4213732 Apparatus for remotely repairing tubes in a steam generator Jul. 22, 1980
4205940 Apparatus for remotely repairing tubes in a steam generator Jun. 3, 1980
4196049 Segmented articulating manipulator arm for nuclear reactor vessel inspection apparatus Apr. 1, 1980
4174999 Positioning means for circumferentially locating inspection apparatus in a nuclear reactor vessel Nov. 20, 1979
4169758 Nuclear reactor vessel inspection apparatus Oct. 2, 1979
4165254 Pulley system including emergency locking means for nuclear reactor vessel inspection apparatus Aug. 21, 1979
4158309 Variable mounting assembly for transducers employed in nuclear reactor vessel inspection apparatus Jun. 19, 1979
4149932 Emergency disconnect means for the manipulator arm of a nuclear reactor vessel inspection apparatus Apr. 17, 1979
4149934 Emergency retraction means for the manipulator arm of a nuclear reactor vessel inspection apparatus Apr. 17, 1979
4149933 Emergency braking system for nuclear reactor vessel inspection apparatus Apr. 17, 1979
4131018 Elbow or bent tube manipulator, especially for ultrasonic testing in nuclear reactor installation Dec. 26, 1978
4117733 Test system carrier for ultrasonic testing of nozzle seams, pipe connection seams and nozzle corners in pressure vessels, particularly reactor pressure vessels of nuclear power plants Oct. 3, 1978
4081325 Internal structure for a nuclear reactor vessel Mar. 28, 1978
3943756 Wall inspection device Mar. 16, 1976

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