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Class Information
Number: 376/250
Name: Induced nuclear reactions: processes, systems, and elements > Testing, sensing, measuring, or detecting a fission reactor condition > Leak detection
Description: Subject matter wherein the state being determined is the undesirable release of material from within a reactor system or component thereof.

Sub-classes under this class:

Class Number Class Name Patents
376/251 Fuel element leak detection 79

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7885370 Method and system for early sensing of water leakage, through chemical concentration monitoring, in nuclear reactor system using liquid metal and molten salt Feb. 8, 2011
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
7191108 Structured approach for risk-informing deterministic safety analyses Mar. 13, 2007
6873672 Procedure and device for measuring resistance to hydriding of tubes and tubular claddings Mar. 29, 2005
6680686 Remote ionizing radiation detector Jan. 20, 2004
6680994 Monitoring the contents of a container by ultrasonic means Jan. 20, 2004
6639236 Radioactive material container Oct. 28, 2003
6570949 Method and apparatus for testing nuclear reactor fuel assemblies May. 27, 2003
6345081 Method and a device for evaluating the integrity of the nuclear fuel in a nuclear plant Feb. 5, 2002
6252923 In-situ self-powered monitoring of stored spent nuclear fuel Jun. 26, 2001
6223587 Device and method for permanently controlling the tightness of closing lids of containers for radioactive materials May. 1, 2001
6088417 Apparatus and method for leak detection Jul. 11, 2000
5790617 Method and apparatus for detection of failed fuel rods by use of acoustic energy frequency attenuation Aug. 4, 1998
5748692 Rack loader and method for transuranic transfers into and out of storage May. 5, 1998
5661767 Method for replacing a through-tube of the vessel bottom head of a nuclear reactor cooled by pressurized water Aug. 26, 1997
5652775 Method and device for detecting and monitoring perforation of the vessel bottom head of a nuclear reactor Jul. 29, 1997
5638414 Method for detecting failure of nuclear reactor fuel Jun. 10, 1997
5570400 On line sipping air delivery system Oct. 29, 1996
5561418 Leak detector for conductive liquid boiler Oct. 1, 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
5544206 Reactor head work station 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
5483560 Method and apparatus for testing, repairing or exchanging the nozzles passing through the bottom of a reactor pressure vessel Jan. 9, 1996
5465280 Pressure vessel apparatus Nov. 7, 1995
5450459 Enclosure for confining and covering a wall and in particular the vessel head of a nuclear reactor Sep. 12, 1995
5448603 Pressure-sensitive variable-resistance hygroscopic fluid detector, and method Sep. 5, 1995
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
5375458 Leak test fixture Dec. 27, 1994
5345479 Sensitivity enhancement for airborne radioactivity monitoring system to detect reactor coolant leaks Sep. 6, 1994
5309487 Mitigation of steam generator tube rupture in a pressurized water reactor with passive safety systems May. 3, 1994
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
5229067 Liquid metal cooled nuclear reactor Jul. 20, 1993
5210526 Automatic leak detection apparatus for process fluids from production and/or research plants, in particular energy plants May. 11, 1993
5182076 Method for monitoring the emplacement of a transportable element and the tightness of its joint with a fixed structure, and the use of this method Jan. 26, 1993
5136876 Apparatus and process for determining fluid leak rates Aug. 11, 1992
5114664 Method for in situ evaluation of capacitive type pressure transducers in a nuclear power plant May. 19, 1992
5100610 Tube plug inspection system Mar. 31, 1992
5098643 Method for detecting leaky rods in a nuclear fuel assembly Mar. 24, 1992
5089214 Apparatus for monitoring the pressure within a cask containing radioactive material Feb. 18, 1992
5059383 Sodium leak detection system for liquid metal cooled nuclear reactors Oct. 22, 1991
5028380 Method and device for the identification of leakiness in a neutron-capturing pencil of a nuclear reactor Jul. 2, 1991
5028381 Device for the ultrasonic non-destructive testing of a circular weld inside a steam generator tube Jul. 2, 1991
4983352 Closure system for a spent fuel storage cask Jan. 8, 1991
4857261 Reactor vessel head area monitoring system Aug. 15, 1989
4836274 Liquid alkali metal-water, tube-in-shell steam generators Jun. 6, 1989

1 2 3

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