{"data":{"id":"us/10-cfr-1017.23","jurisdiction":"us","citation":"10 CFR 1017.23","heading":"Protection in use.","body":"An Authorized Individual or a person granted limited access to UCNI under § 1017.21 must maintain physical control over any document or material marked as containing UCNI that is in use to prevent unauthorized access to it.","path":["Title 10—Energy","CHAPTER X—DEPARTMENT OF ENERGY (GENERAL PROVISIONS)","PART 1017—IDENTIFICATION AND PROTECTION OF UNCLASSIFIED CONTROLLED NUCLEAR INFORMATION","Subpart E—Physical Protection Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"422cbf0fb817fb8a75acd881319f148491ee06d567006a909c97de30c9eebd69","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-1017.22","next":"us/10-cfr-1017.24"},"notice":"GroundRules: Original legal text. Not legal advice."}