Enum: NuclearSecurityCategoryEnum

IAEA nuclear material security categories (INFCIRC/225)

URI: valuesets:NuclearSecurityCategoryEnum

Permissible Values

Value	Meaning	Description
CATEGORY_I	None	Material that can be used directly to manufacture nuclear explosive devices
CATEGORY_II	None	Material requiring further processing to manufacture nuclear explosive device...
CATEGORY_III	None	Material posing radiation hazard but minimal proliferation risk
CATEGORY_IV	None	Material with minimal security significance

Slots

Name	Description
nuclear_security_category	IAEA nuclear material security category

Identifier and Mapping Information

Schema Source

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

LinkML Source

name: NuclearSecurityCategoryEnum
description: IAEA nuclear material security categories (INFCIRC/225)
from_schema: https://w3id.org/linkml/valuesets
rank: 1000
permissible_values:
  CATEGORY_I:
    text: CATEGORY_I
    description: Material that can be used directly to manufacture nuclear explosive
      devices
    annotations:
      direct_use:
        tag: direct_use
        value: true
      proliferation_risk:
        tag: proliferation_risk
        value: highest
      protection_requirements:
        tag: protection_requirements
        value: maximum
      examples:
        tag: examples
        value: HEU ≥20%, Pu ≥2kg, U-233 ≥2kg
      physical_protection:
        tag: physical_protection
        value: multiple independent physical barriers
    title: Category I Nuclear Material
  CATEGORY_II:
    text: CATEGORY_II
    description: Material requiring further processing to manufacture nuclear explosive
      devices
    annotations:
      direct_use:
        tag: direct_use
        value: requires processing
      proliferation_risk:
        tag: proliferation_risk
        value: moderate
      protection_requirements:
        tag: protection_requirements
        value: substantial
      examples:
        tag: examples
        value: HEU <20% but >5%, natural uranium >500kg
      physical_protection:
        tag: physical_protection
        value: significant barriers required
    title: Category II Nuclear Material
  CATEGORY_III:
    text: CATEGORY_III
    description: Material posing radiation hazard but minimal proliferation risk
    annotations:
      direct_use:
        tag: direct_use
        value: false
      proliferation_risk:
        tag: proliferation_risk
        value: low
      protection_requirements:
        tag: protection_requirements
        value: basic
      examples:
        tag: examples
        value: natural uranium 10-500kg, depleted uranium
      physical_protection:
        tag: physical_protection
        value: basic measures sufficient
    title: Category III Nuclear Material
  CATEGORY_IV:
    text: CATEGORY_IV
    description: Material with minimal security significance
    annotations:
      direct_use:
        tag: direct_use
        value: false
      proliferation_risk:
        tag: proliferation_risk
        value: minimal
      protection_requirements:
        tag: protection_requirements
        value: administrative
      examples:
        tag: examples
        value: small quantities of natural uranium
    title: Category IV Nuclear Material