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公开(公告)号：WO2022192799A1
公开(公告)日：2022-09-15
申请号：PCT/US2022/020253
申请日：2022-03-14
Applicant: OKLO INC.
Inventor： DEWITTE, Jacob
IPC: G21C3/58
Abstract: A commercial nuclear fuel system includes: a vessel that defines an inner volume; a reactor core positioned within the inner volume; and a plurality of fuel pins disposed in the reactor core, each of the plurality of fuel pins comprising at least one hydride fuel element positioned in a cladding. The at least one hydride fuel element is enriched to twenty percent or less of fissile material. The fissile material comprises one or more of uranium-233, uranium-235, or plutonium-239. The fuel pins are positioned in a lattice within the reactor core. The vessel comprises a first vessel, and a second vessel is positioned within the first vessel and surrounds the plurality of fuel pins. At least one reflector is positioned within the first vessel and surrounds the plurality of fuel pins. A shielding assembly is positioned between the reflector and the first vessel.
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公开(公告)号：WO2021183478A2
公开(公告)日：2021-09-16
申请号：PCT/US2021/021456
申请日：2021-03-09
Applicant: OKLO INC.
Inventor： DEWITTE, Jacob , RICHARD, Joshua G. , BATES, Ethan , DOAN, Samuel , AKINSULIRE, Olorunsola , HAWN, David , EVERETT, Patrick
Abstract: Radiation shielding and methods of manufacture are disclosed. A radiation shielding apparatus includes a matrix including matrix material; and a mixture positioned in the matrix, the mixture including: a neutron thermalizing material; and a neutron absorbing material mixed with the neutron thermalizing material. A reactivity control system includes a container rotatable around an axis; a divider positioned inside the container to define two or more compartments within the container; at least one neutron absorber positioned in at least one of the two or more compartments; and at least one neutron reflector positioned in another of the two or more compartments that is fluidly isolated from the at least one of the two or more compartments. A method of manufacturing radiation shielding material includes: fabricating a matrix; generating a mixture by mixing a neutron absorbing material, a neutron thermalizing material, and additive materials; and loading the mixture into the matrix.
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公开(公告)号：WO2021183452A2
公开(公告)日：2021-09-16
申请号：PCT/US2021/021394
申请日：2021-03-08
Applicant: OKLO INC.
Inventor： DEWITTE, Jacob , COCHRAN, Caroline , GRAFF, Nathan , EVERETT, Patrick , RICHARD, Joshua G. , RENNER, Alex , HAWN, David , HANSON, John
Abstract: Reactor buildings and vessel systems are disclosed. A nuclear power system includes: a building structure that comprises at least two exterior side walls and two end walls, at least one of the exterior walls angled non-orthogonally relative to a floor of the building structure, the at least two exterior walls and two end walls defining an interior volume of the building structure; one or more nuclear reactor systems mounted at least partially in the interior volume of the building structure; and one or more heat exchanger systems mounted at least partially to at least one of the exterior walls. A nuclear reactor vessel system includes: a nuclear fission reactor; an inner vessel that defines an inner volume sized to at least partially enclose the nuclear fission reactor; and an outer vessel sized to wholly or substantially enclose the inner vessel, the inner vessel being removable from the outer vessel.
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Patent Agency Ranking
公开(公告)号：WO2022225611A2
公开(公告)日：2022-10-27
申请号：PCT/US2022/018036
申请日：2022-02-25
Applicant: OKLO INC.
Inventor： DEWITTE, Jacob
Abstract: A nuclear fuel system (210), nuclear fuel particle (100), and method for operating a nuclear fuel system are disclosed. A nuclear fuel system includes a matrix (130) material and a plurality of fuel particles (100) disposed in the matrix material, each fuel particle comprising a fuel kernel (110) and a fuel coating (120) that covers a surface of the fuel kernel. The fuel kernel comprises a fissile material including one or more of uranium-233, uranium-235, or plutonium-239. The fuel coating is functionally graded in density. A density of the fuel coating increases along an outward radial direction referenced to the center of the fuel kernel. The fuel coating comprises a neutron moderating material. A volume fraction of fuel particles is thirty-five percent or more of a volume of a nuclear fuel compact.
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公开(公告)号：WO2017184255A2
公开(公告)日：2017-10-26
申请号：PCT/US2017/019780
申请日：2017-02-27
Applicant: OKLO, INC.
Inventor： DEWITTE, Jacob , RICHARD, Joshua G.
Abstract: A nuclear reactor may comprise: fuel comprising or breeding plutonium-239; a neutron moderator, such as ZrHx, where x is about 1.6, YH 2, TiH 2 and/or ThH 2 , which behaves as an Einstein oscillator and as the temperature of the reactor increases the moderator increases the energy of thermal neutrons into the Pu-239 neutron absorption resonance; and a neutron absorbing element with strong neutron absorption around 0.3 eV added to one or more components of a reactor core of the nuclear reactor, wherein the neutron absorbing element is provided in an amount calculated to suppress, at any time during the life of the fuel, a reactivity gain with temperature due to the neutron moderator increasing the energy of thermal neutrons into the Pu-239 neutron absorption resonance.
Abstract translation: 核反应堆可以包括：包含或繁殖钚-239的燃料; 中子慢化剂，例如ZrH x，其中x约为1.6，YH 2，TiH 2和/或ThH 2，其表现为 爱因斯坦振荡器，随着反应堆温度的升高，慢化剂将热中子的能量增加到Pu-239中子吸收共振中; 以及具有约0.3eV的强中子吸收的中子吸收元件被添加到所述核反应堆的反应堆堆芯的一个或多个部件，其中所述中子吸收元件以在所述燃料的寿命期间的任何时间 ，由于中子慢化剂增加了热中子的能量进入Pu-239中子吸收共振，反应性随温度增加。
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6.发明申请
公开(公告)号：WO2022046521A2
公开(公告)日：2022-03-03
申请号：PCT/US2021/046746
申请日：2021-08-19
Applicant: OKLO INC.
Inventor： DEWITTE, Jacob , COCHRAN, Caroline , RENNER, Alex , EVERETT, Patrick , GESCHKE, Miller , HUIBREGTSE, Clyde , HAWN, David , HANSON, John
IPC: G21C1/32 , G21C5/02 , G21C13/02 , G21C15/18 , G21C15/26 , G21C19/20 , G21C19/30 , G21D3/00 , G21C11/06 , G21C15/247 , G21C1/322 , G21C19/205 , G21D3/001
Abstract: Methods and systems for in-vessel natural circulation alkali metal reactor systems, purification systems, and associated methods are disclosed. A nuclear reactor vessel system includes an inner vessel that defines an inner volume sized to at least partially enclose a reactor. The reactor includes a plurality of nuclear fuel elements at least partially enclosed within a cladding, the reactor being cooled by a liquid metal coolant in a primary coolant loop. A pool of immersing fluid occupies a volume inside the inner vessel. The reactor vessel system includes an outer vessel sized to wholly or substantially enclose the inner vessel. A nuclear reactor power system includes a reactor core including an active fuel region; and a rotatable drum including at least one of a neutron absorbing material, a neutron leakage enhancing material, or a neutron reflecting material, the rotatable drum positioned external to the active fuel region of the reactor core.
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公开(公告)号：WO2021178953A2
公开(公告)日：2021-09-10
申请号：PCT/US2021/021349
申请日：2021-03-08
Applicant: OKLO INC.
Inventor： DEWITTE, Jacob , COCHRAN, Caroline , EVERETT, Patrick , HANSON, John , RICHARD, Joshua G. , RENNER, Alex , GRAFF, Nathan , HAWN, David
IPC: G21C15/257 , G21C1/32 , G21C3/38
Abstract: Fuel, heat exchangers, and instrumentation for nuclear reactors are disclosed. A nuclear power system includes a plurality of nuclear fuel elements, each of the nuclear fuel elements including an annulus; and a plurality of heat pipes, each of the plurality of heat pipes configured to pass through the annulus of a respective one of the nuclear fuel elements in conductive thermal contact with the respective nuclear fuel element. A nuclear instrumentation module includes an assembly of optical fibers, each optical fiber comprising one or more sensors and configured for removable installation at one of the plurality of heat pipes. A heat exchanger includes a heat pipe including an evaporating region and a condensing region; and a tube bundle configured to wrap around the condensing region of the heat pipe and including one or more adjacent, parallel tubes, each tube forming a helix that is coaxial to the heat pipe.
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公开(公告)号：WO2017184255A3
公开(公告)日：2017-10-26
申请号：PCT/US2017/019780
申请日：2017-02-27
Applicant: OKLO, INC.
Inventor： DEWITTE, Jacob , RICHARD, Joshua G.
IPC: G21C5/20
Abstract: A nuclear reactor may comprise: fuel comprising or breeding plutonium-239; a neutron moderator, such as ZrHx, where x is about 1.6, YH 2, TiH 2 and/or ThH 2 , which behaves as an Einstein oscillator and as the temperature of the reactor increases the moderator increases the energy of thermal neutrons into the Pu-239 neutron absorption resonance; and a neutron absorbing element with strong neutron absorption around 0.3 eV added to one or more components of a reactor core of the nuclear reactor, wherein the neutron absorbing element is provided in an amount calculated to suppress, at any time during the life of the fuel, a reactivity gain with temperature due to the neutron moderator increasing the energy of thermal neutrons into the Pu-239 neutron absorption resonance.
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