Unclassified Controlled Nuclear Information (UCNI)

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Welcome to the Unclassified Controlled Nuclear Information (UCNI) webpage. This page is designed to provide information, answer questions, and provide a point of contact for UCNI inquiries.

UCNI is certain unclassified information about nuclear facilities and nuclear weapons that must be controlled because its unauthorized release could have a significant adverse effect on the national security or public health and safety. The Director, Office of Classification (OC), decides what specific information is UCNI. For information under the cognizance of the National Nuclear Security Administration (NNSA), the decisions are made in coordination with the Associate Administrator for Defense Nuclear Security. UCNI Reviewing Officials use guidance based on these determinations to decide if documents contain UCNI. Any document that may contain UCNI must be reviewed by an UCNI Reviewing Official to determine if it contains UCNI.

DOE-specific requirements concerning UCNI can be found in DOE Order 471.1B, Identification and Protection of Unclassified Controlled Nuclear Information. References to specific sections of the Order containing the requirements are provided in the answers to questions so that you may search the directives for the citations.

For complete requirements for UCNI, employees must reference 10 CFR Part 1017, Identification and Protection of Unclassified Controlled Nuclear Information and DOE Order 471.1B, Identification and Protection of Unclassified Controlled Nuclear Information.