Controlled Unclassified Information (CUI)

CUI Registry: Nuclear-Safeguards Information


Category-Subcategory: Nuclear-Safeguards Information
Category Description:

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

Subcategory Description: Pursuant to 42 USC 2011, et seq., and as defined in 10 CFR 73.2, SGI relates to security related information concerning the physical protection of source, byproduct or special nuclear material and the detailed security measures for facilities and information contained within security plans.
Marking: SGI


  • 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
10 CFR 73 Specified 10 CFR 73.81



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.