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Class Information
Number: 376/251
Name: Induced nuclear reactions: processes, systems, and elements > Testing, sensing, measuring, or detecting a fission reactor condition > Leak detection > Fuel element leak detection
Description: Subject matter wherein the component is the fission fuel element.










Sub-classes under this class:

Class Number Class Name Patents
376/252 By acoustic or ultrasonic wave energy 125
376/253 By the detection of fission products external to the fuel element 90


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8509374 Producing a design for a nuclear fuel element Aug. 13, 2013
7778378 Leak detection method for testing fuel rods of fuel assemblies of a boiling water reactor for leaks Aug. 17, 2010
7763858 Apparatus and method for measuring radioactive material in a matrix Jul. 27, 2010
7104127 Nondestructive method for inspecting cladding tubes Sep. 12, 2006
6879653 Method and device for measuring the diameter of a peripheral rod in a fuel assembly of a nuclear reactor Apr. 12, 2005
6680994 Monitoring the contents of a container by ultrasonic means Jan. 20, 2004
6570949 Method and apparatus for testing nuclear reactor fuel assemblies May. 27, 2003
6345082 Fuel assembly mechanical flow restriction apparatus for detecting failure in situ of nuclear fuel rods in a fuel assembly during reactor shutdown Feb. 5, 2002
6345081 Method and a device for evaluating the integrity of the nuclear fuel in a nuclear plant Feb. 5, 2002
6134289 Thermal neutron detection system Oct. 17, 2000
5892804 One-way implodable tag capsule with hemispherical beaded end cap for LWR fuel manufacturing Apr. 6, 1999
5790617 Method and apparatus for detection of failed fuel rods by use of acoustic energy frequency attenuation Aug. 4, 1998
5706321 Method for nonlinear optimization for gas tagging and other systems Jan. 6, 1998
5638414 Method for detecting failure of nuclear reactor fuel Jun. 10, 1997
5570400 On line sipping air delivery system Oct. 29, 1996
5546435 Fission product leak detection in a pressurized-water reactor Aug. 13, 1996
5544208 Method and apparatus for in situ detection of defective nuclear fuel assembly Aug. 6, 1996
5537450 On-line analysis of fuel integrity Jul. 16, 1996
5535253 Method and device for detecting leaks in penetrations of a nuclear reactor vessel head during operation Jul. 9, 1996
5414742 Leak-detection system and method for detecting a leaking container May. 9, 1995
5383226 Method of carrying out leak detection of nuclear fuel assemblies Jan. 17, 1995
5333157 Expert system for identification of simultaneous and sequential reactor fuel failures with gas tagging Jul. 26, 1994
5280507 Method and apparatus for sensing obstructions in a nuclear fuel rod Jan. 18, 1994
H1262 Rod examination gauge Dec. 7, 1993
5260218 Autoclave corrosion test for zirconium alloys Nov. 9, 1993
5235624 Method and device for detecting a leak from a fuel element of an assembly for a nuclear reactor Aug. 10, 1993
5098643 Method for detecting leaky rods in a nuclear fuel assembly Mar. 24, 1992
5062119 Detection of broken coated fuel particles in ceramic coating layer Oct. 29, 1991
5009835 Nuclear fuel rod helium leak inspection apparatus and method Apr. 23, 1991
4720994 Method and apparatus for the detectable release of gases Jan. 26, 1988
4697322 Method and device for repairing fuel assemblies of boiling-water nuclear reactors Oct. 6, 1987
4696788 Process and device for detecting defective cladding sheaths in a nuclear fuel assembly Sep. 29, 1987
4696787 Monitoring pressure within a vessel 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
4683104 Equipment for the inspection of fuel rods of nuclear reactors Jul. 28, 1987
4659544 Unitary structure of tag gas capsule and end cap of nuclear fuel cladding tube Apr. 21, 1987
4657729 Solid tags for identifying failed reactor components Apr. 14, 1987
4645636 Measuring head for determining the pressure of fission gases released inside bars of nuclear fuel Feb. 24, 1987
4643866 Nuclear fuel pellet-cladding interaction test device and method modeling in-core reactor thermal conditions Feb. 17, 1987
4626401 Apparatus for inspecting fuel elements Dec. 2, 1986
4612159 Nuclear fuel element and process for fabricating the same Sep. 16, 1986
4605531 Process for examining a fuel assembly of a nuclear reactor and an examining machine for performing this process Aug. 12, 1986
4591478 Method of identifying defective particle coatings May. 27, 1986
4582671 Failed fuel location detector Apr. 15, 1986
4575930 Nuclear reactor fuel assembly peripheral rod lifting device Mar. 18, 1986
4565667 Failed fuel detection apparatus Jan. 21, 1986
4560529 Fuel washout detection system Dec. 24, 1985
4554128 Nuclear fuel rod end plug weld inspection Nov. 19, 1985
4539174 Fuel pin transfer tool Sep. 3, 1985

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