U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 10Chapter IPart 31 - PART 31—GENERAL DOMESTIC LICENSES FOR BYPRODUCT MATERIAL
§ 31.1 - Purpose and scope.
§ 31.2 - Terms and conditions.
§ 31.3 - [Reserved]
§ 31.4 - Information collection requirements: OMB approval.
§ 31.5 - Certain detecting, measuring, gauging, or controlling devices and certain devices for producing light or an ionized atmosphere. 2
§ 31.6 - General license to install devices generally licensed in § 31.5.
§ 31.7 - Luminous safety devices for use in aircraft.
§ 31.8 - Americium-241 and radium-226 in the form of calibration or reference sources.
§ 31.9 - General license to own byproduct material.
§ 31.10 - General license for strontium 90 in ice detection devices.
§ 31.11 - General license for use of byproduct material for certain in vitro clinical or laboratory testing.
§ 31.12 - General license for certain items and self-luminous products containing radium-226.
§§ 31.13-31.20 - §[Reserved]
§ 31.21 - Maintenance of records.
§ 31.22 - Violations.
§ 31.23 - Criminal penalties.
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