Enum: NuclearFuelTypeEnum

Types of nuclear fuel materials and compositions

Permissible Values

Value	Meaning	Description
NATURAL_URANIUM	CHEBI:27214	Uranium as found in nature (0
LOW_ENRICHED_URANIUM	None	Uranium enriched to 0
HIGH_ASSAY_LEU	None	Uranium enriched to 5%-20% U-235
HIGHLY_ENRICHED_URANIUM	None	Uranium enriched to 20% or more U-235
WEAPONS_GRADE_URANIUM	None	Uranium enriched to 90% or more U-235
REACTOR_GRADE_PLUTONIUM	None	Plutonium with high Pu-240 content from spent fuel
WEAPONS_GRADE_PLUTONIUM	None	Plutonium with low Pu-240 content
MOX_FUEL	None	Mixture of plutonium and uranium oxides
THORIUM_FUEL	CHEBI:33385	Fuel containing thorium-232 as fertile material
TRISO_FUEL	None	Coated particle fuel with multiple containment layers
LIQUID_FUEL	None	Fuel dissolved in liquid medium
METALLIC_FUEL	None	Fuel in metallic form
CARBIDE_FUEL	None	Uranium or plutonium carbide fuel
NITRIDE_FUEL	None	Uranium or plutonium nitride fuel

Slots

Name	Description
nuclear_fuel_type	Type of nuclear fuel material

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/linkml/valuesets

LinkML Source

name: NuclearFuelTypeEnum
description: Types of nuclear fuel materials and compositions
from_schema: https://w3id.org/linkml/valuesets
rank: 1000
permissible_values:
  NATURAL_URANIUM:
    text: NATURAL_URANIUM
    description: Uranium as found in nature (0.711% U-235)
    meaning: CHEBI:27214
    annotations:
      u235_content:
        tag: u235_content
        value: 0.711%
      u238_content:
        tag: u238_content
        value: 99.289%
      enrichment_required:
        tag: enrichment_required
        value: false
      typical_use:
        tag: typical_use
        value: PHWR, some research reactors
    title: Natural Uranium
    aliases:
    - Natural U
    - Unat
    - uranium atom
  LOW_ENRICHED_URANIUM:
    text: LOW_ENRICHED_URANIUM
    description: Uranium enriched to 0.7%-20% U-235
    annotations:
      u235_content:
        tag: u235_content
        value: 0.7-20%
      proliferation_risk:
        tag: proliferation_risk
        value: low
      typical_use:
        tag: typical_use
        value: commercial power reactors
      iaea_category:
        tag: iaea_category
        value: indirect use material
    title: Low Enriched Uranium (LEU)
    aliases:
    - LEU
  HIGH_ASSAY_LEU:
    text: HIGH_ASSAY_LEU
    description: Uranium enriched to 5%-20% U-235
    annotations:
      u235_content:
        tag: u235_content
        value: 5-20%
      typical_use:
        tag: typical_use
        value: advanced reactors, SMRs
      proliferation_risk:
        tag: proliferation_risk
        value: moderate
    title: High-Assay Low Enriched Uranium (HALEU)
    aliases:
    - HALEU
    - LEU+
  HIGHLY_ENRICHED_URANIUM:
    text: HIGHLY_ENRICHED_URANIUM
    description: Uranium enriched to 20% or more U-235
    annotations:
      u235_content:
        tag: u235_content
        value: ≥20%
      proliferation_risk:
        tag: proliferation_risk
        value: high
      typical_use:
        tag: typical_use
        value: research reactors, naval propulsion
      iaea_category:
        tag: iaea_category
        value: direct use material
    title: Highly Enriched Uranium (HEU)
    aliases:
    - HEU
  WEAPONS_GRADE_URANIUM:
    text: WEAPONS_GRADE_URANIUM
    description: Uranium enriched to 90% or more U-235
    annotations:
      u235_content:
        tag: u235_content
        value: ≥90%
      proliferation_risk:
        tag: proliferation_risk
        value: very high
      typical_use:
        tag: typical_use
        value: nuclear weapons, some naval reactors
    title: Weapons-Grade Uranium
    aliases:
    - WGU
  REACTOR_GRADE_PLUTONIUM:
    text: REACTOR_GRADE_PLUTONIUM
    description: Plutonium with high Pu-240 content from spent fuel
    annotations:
      pu239_content:
        tag: pu239_content
        value: <93%
      pu240_content:
        tag: pu240_content
        value: '>7%'
      source:
        tag: source
        value: spent nuclear fuel
      typical_use:
        tag: typical_use
        value: MOX fuel
    title: Reactor-Grade Plutonium
    aliases:
    - RGPu
  WEAPONS_GRADE_PLUTONIUM:
    text: WEAPONS_GRADE_PLUTONIUM
    description: Plutonium with low Pu-240 content
    annotations:
      pu239_content:
        tag: pu239_content
        value: ≥93%
      pu240_content:
        tag: pu240_content
        value: <7%
      proliferation_risk:
        tag: proliferation_risk
        value: very high
    title: Weapons-Grade Plutonium
    aliases:
    - WGPu
  MOX_FUEL:
    text: MOX_FUEL
    description: Mixture of plutonium and uranium oxides
    annotations:
      composition:
        tag: composition
        value: UO2 + PuO2
      plutonium_content:
        tag: plutonium_content
        value: 3-10%
      typical_use:
        tag: typical_use
        value: thermal reactors
      recycling:
        tag: recycling
        value: enables plutonium recycling
    title: Mixed Oxide Fuel
    aliases:
    - MOX
    - Mixed Oxide
  THORIUM_FUEL:
    text: THORIUM_FUEL
    description: Fuel containing thorium-232 as fertile material
    meaning: CHEBI:33385
    annotations:
      fertile_isotope:
        tag: fertile_isotope
        value: Th-232
      fissile_product:
        tag: fissile_product
        value: U-233
      abundance:
        tag: abundance
        value: more abundant than uranium
      proliferation_resistance:
        tag: proliferation_resistance
        value: high
    title: Thorium-Based Fuel
    aliases:
    - Thorium fuel
    - thorium
  TRISO_FUEL:
    text: TRISO_FUEL
    description: Coated particle fuel with multiple containment layers
    annotations:
      form:
        tag: form
        value: coated particles
      containment_layers:
        tag: containment_layers
        value: 4
      meltdown_resistance:
        tag: meltdown_resistance
        value: very high
      typical_use:
        tag: typical_use
        value: HTGR, some SMRs
    title: Tri-structural Isotropic Fuel
    aliases:
    - TRISO
  LIQUID_FUEL:
    text: LIQUID_FUEL
    description: Fuel dissolved in liquid medium
    annotations:
      phase:
        tag: phase
        value: liquid
      typical_use:
        tag: typical_use
        value: molten salt reactors
      reprocessing:
        tag: reprocessing
        value: online
    title: Liquid Nuclear Fuel
  METALLIC_FUEL:
    text: METALLIC_FUEL
    description: Fuel in metallic form
    annotations:
      form:
        tag: form
        value: metal alloy
      typical_use:
        tag: typical_use
        value: fast reactors
      thermal_conductivity:
        tag: thermal_conductivity
        value: high
    title: Metallic Nuclear Fuel
  CARBIDE_FUEL:
    text: CARBIDE_FUEL
    description: Uranium or plutonium carbide fuel
    annotations:
      chemical_form:
        tag: chemical_form
        value: carbide
      melting_point:
        tag: melting_point
        value: very high
      typical_use:
        tag: typical_use
        value: advanced reactors
    title: Carbide Nuclear Fuel
  NITRIDE_FUEL:
    text: NITRIDE_FUEL
    description: Uranium or plutonium nitride fuel
    annotations:
      chemical_form:
        tag: chemical_form
        value: nitride
      density:
        tag: density
        value: high
      typical_use:
        tag: typical_use
        value: fast reactors
    title: Nitride Nuclear Fuel