Enum: NuclearFuelTypeEnum

Types of nuclear fuel materials and compositions

URI: valuesets:NuclearFuelTypeEnum

Permissible Values

Value	Title	Meaning	Description	Abundance	Chemical Form	Composition	Containment Layers	Density	Enrichment Required	Fertile Isotope	Fissile Product	Form	Iaea Category	Meltdown Resistance	Melting Point	Phase	Plutonium Content	Proliferation Resistance	Proliferation Risk	Pu239 Content	Pu240 Content	Recycling	Reprocessing	Source	Thermal Conductivity	Typical Use	U235 Content	U238 Content
NATURAL_URANIUM	Natural Uranium	CHEBI:27214	Uranium as found in nature (0.711% U-235)																							PHWR, some research reactors	0.711%	99.289%
LOW_ENRICHED_URANIUM	Low Enriched Uranium (LEU)		Uranium enriched to 0.7%-20% U-235										indirect use material						low							commercial power reactors	0.7-20%
HIGH_ASSAY_LEU	High-Assay Low Enriched Uranium (HALEU)		Uranium enriched to 5%-20% U-235																moderate							advanced reactors, SMRs	5-20%
HIGHLY_ENRICHED_URANIUM	Highly Enriched Uranium (HEU)		Uranium enriched to 20% or more U-235										direct use material						high							research reactors, naval propulsion	≥20%
WEAPONS_GRADE_URANIUM	Weapons-Grade Uranium		Uranium enriched to 90% or more U-235																very high							nuclear weapons, some naval reactors	≥90%
REACTOR_GRADE_PLUTONIUM	Reactor-Grade Plutonium		Plutonium with high Pu-240 content from spent fuel																	<93%	>7%			spent nuclear fuel		MOX fuel
WEAPONS_GRADE_PLUTONIUM	Weapons-Grade Plutonium		Plutonium with low Pu-240 content																very high	≥93%	<7%
MOX_FUEL	Mixed Oxide Fuel		Mixture of plutonium and uranium oxides			UO2 + PuO2											3-10%					enables plutonium recycling				thermal reactors
THORIUM_FUEL	Thorium-Based Fuel	CHEBI:33385	Fuel containing thorium-232 as fertile material	more abundant than uranium						Th-232	U-233							high
TRISO_FUEL	Tri-structural Isotropic Fuel		Coated particle fuel with multiple containment layers				4					coated particles		very high												HTGR, some SMRs
LIQUID_FUEL	Liquid Nuclear Fuel		Fuel dissolved in liquid medium													liquid							online			molten salt reactors
METALLIC_FUEL	Metallic Nuclear Fuel		Fuel in metallic form									metal alloy													high	fast reactors
CARBIDE_FUEL	Carbide Nuclear Fuel		Uranium or plutonium carbide fuel		carbide										very high											advanced reactors
NITRIDE_FUEL	Nitride Nuclear Fuel		Uranium or plutonium nitride fuel		nitride			high																		fast reactors

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
instantiates:
- valuesets_meta:ValueSetEnumDefinition
description: Types of nuclear fuel materials and compositions
title: Nuclear Fuel Type
from_schema: https://w3id.org/linkml/valuesets
contributors:
- orcid:0000-0002-6601-2165
- https://github.com/anthropics/claude-code
status: DRAFT
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