Code of Federal Regulations > Title 10 > Chapter I > Part 37 - PART 37—PHYSICAL PROTECTION OF CATEGORY 1 AND CATEGORY 2 QUANTITIES OF RADIOACTIVE MATERIAL

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

Subpart A [§ 37.1 - § 37.13] - Subpart A—General Provisions

Subpart B [§ 37.21 - § 37.33] - Subpart B—Background Investigations and Access Authorization Program

Subpart C [§ 37.41 - § 37.57] - Subpart C—Physical Protection Requirements During Use

Subpart D [§ 37.71 - § 37.81] - Subpart D—Physical Protection in Transit

Subpart E - Subpart E [Reserved]

Subpart F [§ 37.101 - § 37.103] - Subpart F—Records

Subpart G [§ 37.105 - § 37.109] - Subpart G—Enforcement