Controlled Unclassified Information (CUI)

CUI Registry: Nuclear-Security-Related Information


Category-Subcategory: Nuclear-Security-Related Information
Category Description:

Related to protection of information concerning nuclear reactors, materials, or security.

Subcategory Description: Related to information that could be useful, or could reasonably be expected to be useful, to a terrorist in a potential attack that does not qualify as Safeguards or classified information, including the exact location and quantities of radioactive material, certain detailed design drawings, information on nearby facilities, emergency planning information, and certain assessments of vulnerability and safety analyses.
Marking: SRI


  • CUI Specified authorities include specific handling practices that differ from general CUI requirements. For Specified authorities, reference individual Safeguarding/Dissemination control citations for distinct requirements
  • Whether CUI is Basic or Specified is determined by the applicable Safeguarding and/or Dissemination Authority for that CUI.
  • Each "Safeguarding and/or Dissemination Authority" citation links to the statute, regulation or government-wide policy authorizing the control of that information as CUI.
  • Each "Sanctions" authority links to the statute, regulation or government-wide policy that includes penalties for CUI misuse of CUI for the associated "Safeguarding and/or Dissemination Authority" on the same line.

Safeguarding and/or Dissemination Authority Basic or
42 USC 2201(b)(authorizing) Basic



Authority links are updated based on regular re-publication of the United States Code and Code of Federal Regulations, and the CUI Registry maintenance schedule.