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:: Tue Aug 02 00:00:00 EDT 2022

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. 
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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         = {Tue Aug 02 00:00:00 EDT 2022},

  month        = {Tue Aug 02 00:00:00 EDT 2022}

}

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

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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

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Uranium Dioxide Nuclear Fuel Pellet Having Ceramic Microcells and Fabricating Method Thereof
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Graphite-filled mixed-oxide fuel design for fully loaded PWR cores
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