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Class Information
Number: 376/209
Name: Induced nuclear reactions: processes, systems, and elements > With control of reactor (e.g., control of coolant flow) > Spectral shift
Description: Subject matter wherein control is realized through an adjustment made to the energies of the total neutron population.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8599991 Boiling water reactor, core of boiling water reactor and fuel assembly Dec. 3, 2013
7460632 Control rod absorber stack support Dec. 2, 2008
6278757 Fuel assembly and nuclear reactor Aug. 21, 2001
6026136 Seed-blanket reactors Feb. 15, 2000
5386439 Spectral shift nuclear reactor with improved efficiency Jan. 31, 1995
5200138 Spectral shift-producing subassembly for use in a nuclear fuel assembly Apr. 6, 1993
5192496 Fuel assembly and upper tie plate thereof Mar. 9, 1993
5185120 Liquid affected spectral shift reactor Feb. 9, 1993
5167906 Apparatus for increasing fuel efficiency in nuclear reactors Dec. 1, 1992
5124113 Nuclear reactor with improved efficiency Jun. 23, 1992
5100609 Enhancing load-following and/or spectral shift capability in single-sparger natural circulation boiling water reactors Mar. 31, 1992
5075069 Method and apparatus for increasing fuel efficiency in nuclear reactors Dec. 24, 1991
5072387 Method for determining a transit time for a radioactive tracer Dec. 10, 1991
RE33030 Self rupturing gas moderator rod for a nuclear reactor Aug. 22, 1989
4832899 Mechanical spectral shift reactor May. 23, 1989
4826647 Spectral shift reactor May. 2, 1989
4770840 Spectral shift light water nuclear reactor Sep. 13, 1988
4762661 Upper end piece for nuclear fuel assemblies Aug. 9, 1988
4755346 Device for displacing and latching a cluster of control elements in a nuclear reactor Jul. 5, 1988
4728480 Apparatus and method for refurbishing a spectral shift mechanism for a nuclear reactor fuel assembly Mar. 1, 1988
4717527 Fuel assembly Jan. 5, 1988
4716016 Universal fuel assembly construction for a nuclear reactor Dec. 29, 1987
4716008 Device for control of the core of a nuclear reactor Dec. 29, 1987
4716007 Spectral shift reactor Dec. 29, 1987
4716006 Spectral shift reactor control method Dec. 29, 1987
4714582 Actuating device for linearly moving a cluster of control elements in a nuclear reactor Dec. 22, 1987
4710340 Mechanical spectral shift reactor Dec. 1, 1987
4708842 Fluid moderator control system fuel assembly seal connector Nov. 24, 1987
4693862 Gas displacement spectral shift reactor and control method Sep. 15, 1987
4692296 Mechanical spectral shift reactor Sep. 8, 1987
4687627 Water displacer rod with hollow annular support pellets having sealed internal voids Aug. 18, 1987
4687621 Nuclear fuel assembly with improved spectral shift-producing rods Aug. 18, 1987
4687620 Spectral shift reactor control method Aug. 18, 1987
4683103 Spectral shift apparatus and method for a nuclear reactor fuel assembly Jul. 28, 1987
4683102 Device for operating a cluster of neutron absorber elements in a pressurized water nuclear reactor Jul. 28, 1987
4681728 Nuclear reactor Jul. 21, 1987
4666653 Fuel assembly with cooled guide tubes for a nuclear reactor May. 19, 1987
4664878 Light water moderator filled rod for a nuclear reactor May. 12, 1987
4661306 Fluid moderator control system reactor internals distribution system Apr. 28, 1987
4657725 Core for a nuclear reactor cooled by water under pressure Apr. 14, 1987
4657726 Moderator control apparatus for a nuclear reactor fuel assembly Apr. 14, 1987
4652416 Fuel assembly for a pressurized water nuclear reactor Mar. 24, 1987
4606109 Element immersed in coolant of nuclear reactor Aug. 19, 1986
4575448 Moderation of neutron energy Mar. 11, 1986
4544521 Actuating device for two clusters of control rods movable vertically in one and the same fuel array of the core of a nuclear reactor Oct. 1, 1985
4526741 Fuel assembly for the production of tritium in light water reactors Jul. 2, 1985
4526744 Fuel assembly for a boiling water reactor Jul. 2, 1985
4526746 Fuel assembly having water passageway in channel wall Jul. 2, 1985
4481164 Reactivity control assembly for nuclear reactor Nov. 6, 1984
4432934 Displacer rod for use in a mechanical spectral shift reactor Feb. 21, 1984

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