MLchartDataset catalogue

Categories of special nuclear material

Term · Nuclear energy and radiation · MLC-T-NUC-000057

The NRC groups special nuclear materials and the facilities that possess them into three categories based upon the materials’ potential for use in nuclear weapons or their “strategic significance”:

• Category I: High strategic significance

• Category II: Moderate strategic significance

• Category III: Low strategic significance

The NRC’s physical security and safeguards requirements differ by category, with Category I facilities subject to more stringent requirements because they pose greater security and safeguards risks.

Table 1. Record
IdentifierMLC-T-NUC-000057
FieldNuclear energy and radiation
ReferencesNRC Glossary
Record as JSON
{
  "id": "MLC-T-NUC-000057",
  "term": "Categories of special nuclear material",
  "field": "Nuclear energy and radiation",
  "definition": "The NRC groups special nuclear materials and the facilities that possess them into three categories based upon the materials’ potential for use in nuclear weapons or their “strategic significance”:\n\n• Category I: High strategic significance\n\n• Category II: Moderate strategic significance\n\n• Category III: Low strategic significance\n\nThe NRC’s physical security and safeguards requirements differ by category, with Category I facilities subject to more stringent requirements because they pose greater security and safeguards risks.",
  "references": [
    "NRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/nuclear/categories-of-special-nuclear-material/"
}

Record 55 of 548 in Nuclear energy and radiation terminology (MLC-0119). Request the full dataset.