U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 10Chapter IPart 39Subpart C - Subpart C—Equipment
§ 39.31 - Labels, security, and transportation precautions.
§ 39.33 - Radiation detection instruments.
§ 39.35 - Leak testing of sealed sources.
§ 39.37 - Physical inventory.
§ 39.39 - Records of material use.
§ 39.41 - Design and performance criteria for sources.
§ 39.43 - Inspection, maintenance, and opening of a source or source holder.
§ 39.45 - Subsurface tracer studies.
§ 39.47 - Radioactive markers.
§ 39.49 - Uranium sinker bars.
§ 39.51 - Use of a sealed source in a well without a surface casing.
§ 39.53 - Energy compensation source.
§ 39.55 - Tritium neutron generator target sources.
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