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Title 49

Displaying title 49, up to date as of 7/17/2026. Title 49 was last amended 7/14/2026.
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  1. Title 49 —Transportation
  2. Subtitle B —Other Regulations Relating to Transportation
  3. Chapter I —Pipeline and Hazardous Materials Safety Administration, Department of Transportation
  4. Subchapter C —Hazardous Materials Regulations
  5. Part 173 —Shippers—General Requirements for Shipments and Packagings
  6. Subpart I   View Full Text
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eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

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Title 49TransportationPart / Section
Subtitle BOther Regulations Relating to Transportation100 – 1699
Chapter IPipeline and Hazardous Materials Safety Administration, Department of Transportation100 – 199
Subchapter CHazardous Materials Regulations171 – 185
Part 173Shippers—General Requirements for Shipments and Packagings173.1 – 173.477
Subpart IClass 7 (Radioactive) Materials173.401 – 173.477
§ 173.401Scope.
§ 173.403Definitions.
§ 173.410General design requirements.
§ 173.411Industrial packages.
§ 173.412Additional design requirements for Type A packages.
§ 173.413Requirements for Type B packages.
§ 173.415Authorized Type A packages.
§ 173.416Authorized Type B packages.
§ 173.417Authorized fissile materials packages.
§ 173.418Authorized packages—pyrophoric Class 7 (radioactive) materials.
§ 173.419Authorized packages—oxidizing Class 7 (radioactive) materials.
§ 173.420Uranium hexafluoride (fissile, fissile excepted and non-fissile).
§ 173.421Excepted packages for limited quantities of Class 7 (radioactive) materials.
§ 173.422Additional requirements for excepted packages containing Class 7 (radioactive) materials.
§ 173.423Requirements for multiple hazard limited quantity Class 7 (radioactive) materials.
§ 173.424Excepted packages for radioactive instruments and articles.
§ 173.425Table of activity limits—excepted quantities and articles.
§ 173.426Excepted packages for articles containing natural uranium or thorium.
§ 173.427Transport requirements for low specific activity (LSA) Class 7 (radioactive) material and surface contaminated objects (SCO).
§ 173.428Empty Class 7 (radioactive) materials packaging.
§ 173.431Activity limits for Type A and Type B packages.
§ 173.433Requirements for determining basic radionuclide values, and for the listing of radionuclides on shipping papers and labels.
§ 173.434Activity-mass relationships for uranium and natural thorium.
§ 173.435Table of A1 and A2 values for radionuclides.
§ 173.436Exempt material activity concentrations and exempt consignment activity limits for radionuclides.
§ 173.441Radiation level limitations and exclusive use provisions.
§ 173.442Thermal limitations.
§ 173.443Contamination control.
§ 173.447Storage incident to transportation—general requirements.
§ 173.448General transportation requirements.
§ 173.453Fissile materials—exceptions.
§ 173.457Transportation of fissile material packages—specific requirements.
§ 173.459Mixing of fissile material packages with non-fissile or fissile-excepted material packages.
§ 173.461Demonstration of compliance with tests.
§ 173.462Preparation of specimens for testing.
§ 173.465Type A packaging tests.
§ 173.466Additional tests for Type A packagings designed for liquids and gases.
§ 173.467Tests for demonstrating the ability of Type B and fissile materials packagings to withstand accident conditions in transportation.
§ 173.468Test for LSA-III material.
§ 173.469Tests for special form Class 7 (radioactive) materials.
§ 173.471Requirements for U.S. Nuclear Regulatory Commission approved packages.
§ 173.472Requirements for exporting DOT Specification Type B and fissile packages.
§ 173.473Requirements for foreign-made packages.
§ 173.474Quality control for construction of packaging.
§ 173.475Quality control requirements prior to each shipment of Class 7 (radioactive) materials.
§ 173.476Approval of special form Class 7 (radioactive) materials.
§ 173.477Approval of packagings containing greater than 0.1 kg of non-fissile or fissile-excepted uranium hexafluoride.
eCFR Content