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Class Information
Number: 376/258
Name: Induced nuclear reactions: processes, systems, and elements > Testing, sensing, measuring, or detecting a fission reactor condition > Position detection
Description: Subject matter wherein the state determined is the extent to which an element is inserted or withdrawn relative to the position of another element.

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8605851 Rod block monitor Dec. 10, 2013
8599987 Wireless transmission of nuclear instrumentation signals Dec. 3, 2013
8532244 System and method for determining coolant level and flow velocity in a nuclear reactor Sep. 10, 2013
8442180 Control rod position detector May. 14, 2013
8351561 Advanced digital control rod position indication system with rod drop monitoring for nuclear power plants Jan. 8, 2013
8311179 Methods for stabilizing a steam dryer assembly in a nuclear reactor pressure vessel Nov. 13, 2012
8155259 Apparatus and method for measuring and setting perpendicularity of an upper tie plate of a nuclear fuel bundle Apr. 10, 2012
7982459 Hydraulic cylinder rod position sensing method Jul. 19, 2011
7780145 Load compensating device, especially for lifting appliance Aug. 24, 2010
7505545 Method for recognizing step movement sequence of control rod drive mechanism of nuclear reactor Mar. 17, 2009
7308068 Device and method for controlling the exterior aspect of fuel rods for nuclear reactors Dec. 11, 2007
7308069 Device and method for controlling the exterior aspect of fuel rods for nuclear reactors Dec. 11, 2007
7120218 Method for calibrating steam generator water level measurement Oct. 10, 2006
6895066 Measuring head and measuring assembly for a nuclear fuel rod May. 17, 2005
6879653 Method and device for measuring the diameter of a peripheral rod in a fuel assembly of a nuclear reactor Apr. 12, 2005
6865244 Device and method for cooling a reactor pressure vessel of a boiling water reactor plant Mar. 8, 2005
6782069 In-pile creep test system Aug. 24, 2004
6707870 Method for determining friction forces occurring on an object moving in a guide on an inaccessible site Mar. 16, 2004
6668034 Method of inspecting an operation of sealed closure by welding the end of a filling channel traversing the upper plug of a nuclear fuel rod Dec. 23, 2003
6639959 Guide tube camera inspection fixture and method of use Oct. 28, 2003
6606367 Device for measuring the drop time of control rods into the core of a nuclear reactor Aug. 12, 2003
6549600 Method and device for inspecting a fuel element in a nuclear reactor Apr. 15, 2003
6526114 Remote automated nuclear reactor jet pump diffuser inspection tool Feb. 25, 2003
6449034 Method for controlling perpendicularity of a cylindrical part, such as a nuclear fuel pellet Sep. 10, 2002
6421405 Monitoring control rod element assembly position Jul. 16, 2002
6404835 Nuclear reactor rod drop time testing method Jun. 11, 2002
6380734 Control element assembly position verification apparatus Apr. 30, 2002
6295329 Apparatus and method for handling reactor-internal equipments Sep. 25, 2001
6236699 Method and system for monitoring control rod element assembly position May. 22, 2001
6219398 Heated junction thermocouple cable arrangement Apr. 17, 2001
6192096 Magnetostrictive wire control rod position detector assembly Feb. 20, 2001
6169776 Methods and apparatus for examining a nuclear reactor shroud Jan. 2, 2001
6125160 Nuclear fuel bundle spacer envelope dimension measuring system and methods Sep. 26, 2000
6118837 Method for detecting the dropping of a control element Sep. 12, 2000
5978430 Length gauge for in situ measurement of water rod lengths in nuclear fuel bundles and methods of measurement Nov. 2, 1999
5963610 CEDM data acquisition system Oct. 5, 1999
5956381 Method and apparatus for detecting the dropping of a control element Sep. 21, 1999
5917875 Apparatus for inspecting nuclear fuel assemblies Jun. 29, 1999
5881117 Mid-loop fluid level measuring instrument for a nuclear power plant Mar. 9, 1999
5881118 Core protection calculator input filter Mar. 9, 1999
5852642 Method and apparatus for inspecting the geometry of a guide tube Dec. 22, 1998
5850424 Refueling machine with relative positioning capability Dec. 15, 1998
5841824 System and method for testing the free fall time of nuclear reactor control rods Nov. 24, 1998
5835546 System for seating at least one gasket in a pressure vessel penetration where a column penetrates telescopically Nov. 10, 1998
5809100 Apparatus for detecting changes in preload on a tie rod installed as part of a core shroud repair in a boiling water reactor Sep. 15, 1998
5760593 Gap measurement device Jun. 2, 1998
5754609 Condensation vessel for the measurement of steam pressure, filling level and steam flow rate and method for operating a condensation vessel May. 19, 1998
5754611 Method and device for measuring at least one characteristic length on a fuel rod arranged at the periphery of a nuclear fuel assembly May. 19, 1998
5687204 Method of and apparatus for checking the degradation of a pressure vessel of a nuclear reactor Nov. 11, 1997
5661766 Nuclear fuel assembly bow and twist measurement apparatus Aug. 26, 1997

1 2 3 4 5 6

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