Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements

Mariani, Robert D.; Medvedev, Pavel G.

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Title: Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements

Abstract

Fuel pellets and fuel pellet arrangements include thermally-conductive inserts within a fuel. The inserts have at least one portion of a thermally-conductive material, such as radially-extending fins. The inserts are configured to dissipate heat during use of the fuel pellets, while minimizing the amount of the total volume of the fuel pellet that is occupied by non-fissile material. The inclusion of heat-dissipating inserts enables the fuel pellets to exhibit improved thermal performance over the lifetime of the fuel, including a relatively low peak temperature and relatively low integrated average temperatures, while the minimal volume of the inserts avoids significantly decreasing the percent of enrichment achievable.

Inventors:: Mariani, Robert D.; Medvedev, Pavel G.

Issue Date:: 2022-08-02

Research Org.:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1924948

Patent Number(s):: 11404177

Application Number:: 16/661,398

Assignee:: Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Classifications (CPCs):: G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

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G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G21C3/045 - {Pellets}
G21C3/048 - {Shape of pellets}
G21C3/07 - characterised by their material, e.g. alloys
G21C3/08 - provided with external means to promote heat-transfer, e.g. fins, baffles
G21C3/18 - Internal spacers or other non-active material within the casing, e.g. compensating for expansion of fuel rods or for compensating excess reactivity
G21C3/28 - with fissile or breeder material in solid form within a non-active casing
G21C3/58 - Solid reactor fuel {Pellets made of fissile material}
G21C3/623 - {Oxide fuels}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E30/30 - Nuclear fission reactors

Show less

DOE Contract Number:: AC07-05ID14517

Resource Type:: Patent

Resource Relation:: Patent File Date: 10/23/2019

Country of Publication:: United States

Language:: English

Subject:: 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS

Citation Formats


                    Mariani, Robert D., and Medvedev, Pavel G. Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements.  United States: N. p., 2022. 
        Web.

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                    Mariani, Robert D., & Medvedev, Pavel G. Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements.  United States.

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                    Mariani, Robert D., and Medvedev, Pavel G. Tue .  
        "Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements".  United States.  https://www.osti.gov/servlets/purl/1924948.

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@article{osti_1924948,

  title        = {Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements},

  author       = {Mariani, Robert D. and Medvedev, Pavel G.},

  abstractNote = {Fuel pellets and fuel pellet arrangements include thermally-conductive inserts within a fuel. The inserts have at least one portion of a thermally-conductive material, such as radially-extending fins. The inserts are configured to dissipate heat during use of the fuel pellets, while minimizing the amount of the total volume of the fuel pellet that is occupied by non-fissile material. The inclusion of heat-dissipating inserts enables the fuel pellets to exhibit improved thermal performance over the lifetime of the fuel, including a relatively low peak temperature and relatively low integrated average temperatures, while the minimal volume of the inserts avoids significantly decreasing the percent of enrichment achievable.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2022},

  month        = {8}

}

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Title: Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements

Abstract

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Fuel Element for Nuclear Reactor patent, June 1960

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Method for fabricating mixed oxide fuel patent, August 1999

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Zirconium-alloy clad fuel rods containing metal oxide for mitigation of secondary hydriding patent, February 2004

Fuel Element for a Nuclear Reactor and Method of Manufacture patent, March 1964

Fuel Element with Multi-Smear Density Fuel patent-application, January 2020

Thermomechanical Analysis and Irradiation Test of Sintered Dual-Cooled Annular Fuel journal, June 2012

Ductile irradiated zirconium alloy patent, November 1989

Nuclear Reactor Fuel Element with Spaced Reductions of Diameter patent, May 1971

Triuranium disilicide nuclear fuel composition for use in light water reactors patent, October 2012

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Nuclear reactor (alternatives), fuel assembly of seed-blanket subassemblies for nuclear reactor (alternatives), and fuel element for fuel assembly patent, February 2012

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Cladding Tube For Nuclear Fuel Rod, Method And Apparatus For Manufacturing A Cladding Tube
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Uranium Dioxide Nuclear Fuel Pellet Having Ceramic Microcells and Fabricating Method Thereof
patent-application, July 2014

Mixed Oxide Fuel Assembly
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Zirconium-alloy clad fuel rods containing metal oxide for mitigation of secondary hydriding
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