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49 CFR 173.431 - Activity limits for Type A and Type B packages. | Regulus

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Regulation documentation

49 CFR Part 173

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titleTitle 49 — Transportation subtitleSubtitle B — Other Regulations Relating to Transportation chapterChapter I — Pipeline and Hazardous Materials Safety Administration, Department of Transportation subchapterSubchapter C — Hazardous Materials Regulations partPart 173 subpartSubpart I—Class 7 (Radioactive) Materials

47 sections

Subpart A—General19

§ 173.1Purpose and scope.§ 173.2Hazardous material classes and index to hazard class definitions.§ 173.2aa Classification of a material having more than one hazard.§ 173.3Packaging and exceptions.§ 173.4Small quantities for highway and rail.§ 173.4aa Excepted quantities.§ 173.4bb De minimis exceptions.§ 173.5Agricultural operations.§ 173.5aa Oilfield service vehicles, mechanical displacement meter provers, and roadway striping vehicles exceptions.§ 173.5bb Portable and mobile refrigeration systems.§ 173.6Materials of trade exceptions.§ 173.7Government operations and materials.§ 173.8Exceptions for non-specification packagings used in intrastate transportation.§ 173.9Transport vehicles or freight containers containing lading which has been fumigated.§ 173.10Tank car shipments.§ 173.11Exceptions for shipment of light bulbs containing hazardous materials.§ 173.12Exceptions for shipment of waste materials.§ 173.13Exceptions for Class 3, Divisions 4.1, 4.2, 4.3, 5.1, 6.1, and Classes 8 and 9 materials.§ 173.14Hazardous materials in equipment in use or intended for use during transport.

Subpart B—Preparation of Hazardous Materials for Transportation22

§ 173.21Forbidden materials and packages.§ 173.22Shipper's responsibility.§ 173.22aa Use of packagings authorized under special permits.§ 173.23Previously authorized packaging.§ 173.24General requirements for packagings and packages.§ 173.24aa Additional general requirements for non-bulk packagings and packages.§ 173.24bb Additional general requirements for bulk packagings.§ 173.25Authorized packagings and overpacks.§ 173.26Quantity limitations.§ 173.27General requirements for transportation by aircraft.§ 173.28Reuse, reconditioning and remanufacture of packagings.§ 173.29Empty packagings.§ 173.30Loading and unloading of transport vehicles.§ 173.31Use of tank cars.§ 173.32Requirements for the use of portable tanks.§ 173.33Hazardous materials in cargo tank motor vehicles.§ 173.34[Reserved]§ 173.35Hazardous materials in IBCs.§ 173.36Hazardous materials in Large Packagings.§ 173.37Hazardous Materials in Flexible Bulk Containers.§ 173.40General packaging requirements for toxic materials packaged in cylinders.§ 173.41Sampling and testing program for unrefined petroleum-based products.

Subpart C—Definitions, Classification and Packaging for Class 118

§ 173.50Class 1—Definitions.§ 173.51Authorization to offer and transport explosives.§ 173.52Classification codes and compatibility groups of explosives.§ 173.53Provisions for using old classifications of explosives.§ 173.54Forbidden explosives.§ 173.55[Reserved]§ 173.56New explosives—definition and procedures for classification and approval.§ 173.57Acceptance criteria for new explosives.§ 173.58Assignment of class and division for new explosives.§ 173.59Description of terms for explosives.§ 173.60General packaging requirements for explosives.§ 173.61Mixed packaging requirements.§ 173.62Specific packaging requirements for explosives.§ 173.63Packaging exceptions.§ 173.64Exceptions for Division 1.3 and 1.4 fireworks.§ 173.65Exceptions for Division 1.4G consumer fireworks.§ 173.66Requirements for bulk packagings of certain explosives and oxidizers.§ 173.67Exceptions for Division 1.1 jet perforating guns.

Subpart D—Definitions Classification, Packing Group Assignments and Exceptions for Hazardous Materials Other Than Class 1 and Class 726

§ 173.115Class 2, Divisions 2.1, 2.2, and 2.3—Definitions.§ 173.116Class 2—Assignment of hazard zone.§ 173.117-173.119§§ 173.117-173.119 [Reserved]§ 173.120Class 3—Definitions.§ 173.121Class 3—Assignment of packing group.§ 173.124Class 4, Divisions 4.1, 4.2 and 4.3—Definitions.§ 173.125Class 4—Assignment of packing group.§ 173.127Class 5, Division 5.1—Definition and assignment of packing groups.§ 173.128Class 5, Division 5.2—Definitions and types.§ 173.129[Reserved]§ 173.132Class 6, Division 6.1—Definitions.§ 173.133Assignment of packing group and hazard zones for Division 6.1 materials.§ 173.134Class 6, Division 6.2—Definitions and exceptions.§ 173.136Class 8—Definitions.§ 173.137Class 8—Assignment of packing group.§ 173.140Class 9—Definitions.§ 173.141Class 9—Assignment of packing group.§ 173.144-173.145-173.145 [Reserved]§ 173.150Exceptions for Class 3 (flammable and combustible liquids).§ 173.151Exceptions for Class 4.§ 173.152Exceptions for Division 5.1 (oxidizers) and Division 5.2 (organic peroxides).§ 173.153Exceptions for Division 6.1 (poisonous materials).§ 173.154Exceptions for Class 8 (corrosive materials).§ 173.155Exceptions for Class 9 (miscellaneous hazardous materials).§ 173.156Exceptions for limited quantity materials.§ 173.157Reverse logistics—General requirements and exceptions for reverse logistics.

Subpart E—Non-bulk Packaging for Hazardous Materials Other Than Class 1 and Class 763

§ 173.158Nitric acid.§ 173.159Batteries, wet.§ 173.159aa Exceptions for non-spillable batteries.§ 173.160Bombs, smoke, non-explosive (corrosive).§ 173.161Chemical kits and first aid kits.§ 173.162Gallium.§ 173.163Hydrogen fluoride.§ 173.164Mercury (metallic and articles containing mercury).§ 173.165Polyester resin kits.§ 173.166Safety devices.§ 173.167ID8000 consumer commodities.§ 173.168Chemical oxygen generators.§ 173.170Black powder for small arms.§ 173.171Smokeless powder for small arms.§ 173.172Aircraft hydraulic power unit fuel tank.§ 173.173Paint, paint-related material, adhesives, ink and resins.§ 173.174Refrigerating machines.§ 173.175Permeation devices.§ 173.176Capacitors.§ 173.181Pyrophoric materials (liquids).§ 173.182Barium azide—50 percent or more water wet.§ 173.183Nitrocellulose base film.§ 173.184Highway or rail fusee.§ 173.185Lithium cells and batteries.§ 173.186Matches.§ 173.187Pyrophoric solids, metals or alloys, n.o.s.§ 173.188White or yellow phosphorus.§ 173.189Batteries containing sodium or cells containing sodium.§ 173.192Packaging for certain toxic gases in Hazard Zone A.§ 173.193Bromoacetone, methyl bromide, chloropicrin and methyl bromide or methyl chloride mixtures, etc.§ 173.194Gas identification sets.§ 173.195Hydrogen cyanide, anhydrous, stabilized (hydrocyanic acid, aqueous solution).§ 173.196Category A infectious substances.§ 173.197Regulated medical waste.§ 173.198Nickel carbonyl.§ 173.199Category B infectious substances.§ 173.201Non-bulk packagings for liquid hazardous materials in Packing Group I.§ 173.202Non-bulk packagings for liquid hazardous materials in Packing Group II.§ 173.203Non-bulk packagings for liquid hazardous materials in Packing Group III.§ 173.204Non-bulk, non-specification packagings for certain hazardous materials.§ 173.205Specification cylinders for liquid hazardous materials.§ 173.206Packaging requirements for chlorosilanes.§ 173.211Non-bulk packagings for solid hazardous materials in Packing Group I.§ 173.212Non-bulk packagings for solid hazardous materials in Packing Group II.§ 173.213Non-bulk packagings for solid hazardous materials in Packing Group III.§ 173.214Packagings which require approval by the Associate Administrator.§ 173.216Asbestos, blue, brown or white.§ 173.217Carbon dioxide, solid (dry ice).§ 173.218Fish meal or fish scrap.§ 173.219Life-saving appliances.§ 173.220Internal combustion engines, vehicles, machinery containing internal combustion engines, battery-powered equipment or machinery, fuel cell-powered equipment or machinery.§ 173.221Polymeric beads, expandable and Plastic molding compound.§ 173.222Dangerous goods in articles, machinery, or apparatus.§ 173.223Packagings for certain flammable solids.§ 173.224Packaging and control and emergency temperatures for self-reactive materials.§ 173.225Packaging requirements and other provisions for organic peroxides.§ 173.226Materials poisonous by inhalation, Division 6.1, Packing Group I, Hazard Zone A.§ 173.227Materials poisonous by inhalation, Division 6.1, Packing Group I, Hazard Zone B.§ 173.228Bromine pentafluoride or bromine trifluoride.§ 173.229Chloric acid solution or chlorine dioxide hydrate, frozen.§ 173.230Fuel cell cartridges containing hazardous material.§ 173.231Ammonium nitrate emulsion, suspension or gel.§ 173.232Articles containing hazardous materials, n.o.s.

Subpart F—Bulk Packaging for Hazardous Materials Other Than Class 1 and Class 79

§ 173.240Bulk packaging for certain low hazard solid materials.§ 173.241Bulk packagings for certain low hazard liquid and solid materials.§ 173.242Bulk packagings for certain medium hazard liquids and solids, including solids with dual hazards.§ 173.243Bulk packaging for certain high hazard liquids and dual hazard materials which pose a moderate hazard.§ 173.244Bulk packaging for certain pyrophoric liquids (Division 4.2), dangerous when wet (Division 4.3) materials, and poisonous liquids with inhalation hazards (Division 6.1).§ 173.245Bulk packaging for extremely hazardous materials such as poisonous gases (Division 2.3).§ 173.247Bulk packaging for certain elevated temperature materials.§ 173.249Bromine.§ 173.251Bulk packaging for ammonium nitrate emulsion, suspension, or gel.

Subpart G—Gases; Preparation and Packaging36

§ 173.300[Reserved]§ 173.301General requirements for shipment of compressed gases and other hazardous materials in cylinders, UN pressure receptacles, and spherical pressure vessels.§ 173.301aa Additional general requirements for shipment of specification cylinders.§ 173.301bb Additional general requirements for shipment of UN pressure receptacles.§ 173.302Filling of cylinders with nonliquefied (permanent) compressed gases or adsorbed gases.§ 173.302aa Additional requirements for shipment of non-liquefied (permanent) compressed gases in specification cylinders.§ 173.302bb Additional requirements for shipment of non-liquefied (permanent) compressed gases in UN pressure receptacles.§ 173.302cc Additional requirements for the shipment of adsorbed gases in UN pressure receptacles.§ 173.303Charging of cylinders with compressed gas in solution (acetylene).§ 173.304Filling of cylinders with liquefied compressed gases.§ 173.304aa Additional requirements for shipment of liquefied compressed gases in specification cylinders.§ 173.304bb Additional requirements for shipment of liquefied compressed gases in UN pressure receptacles.§ 173.305Charging of cylinders with a mixture of compressed gas and other material.§ 173.306Limited quantities of compressed gases.§ 173.307Exceptions for compressed gases.§ 173.308Lighters.§ 173.309Fire extinguishers.§ 173.310Exceptions for radiation detectors.§ 173.311Metal Hydride Storage Systems.§ 173.312Requirements for shipment of MEGCs.§ 173.313UN Portable Tank Table for Liquefied Compressed Gases and Chemical Under Pressure.§ 173.314Compressed gases in tank cars and multi-unit tank cars.§ 173.315Compressed gases in cargo tanks and portable tanks.§ 173.316Cryogenic liquids in cylinders.§ 173.318Cryogenic liquids in cargo tanks.§ 173.319Cryogenic liquids in tank cars.§ 173.320Cryogenic liquids; exceptions.§ 173.321Ethylamine.§ 173.322Ethyl chloride.§ 173.323Ethylene oxide.§ 173.334Organic phosphates mixed with compressed gas.§ 173.335Chemical under pressure n.o.s.§ 173.336Nitrogen dioxide, liquefied, or dinitrogen tetroxide, liquefied.§ 173.337Nitric oxide.§ 173.338Tungsten hexafluoride.§ 173.340Tear gas devices.

Subpart I—Class 7 (Radioactive) Materials47

§ 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.

Browse regulation

Subpart A—General19

§ 173.1Purpose and scope.§ 173.2Hazardous material classes and index to hazard class definitions.§ 173.2aa Classification of a material having more than one hazard.§ 173.3Packaging and exceptions.§ 173.4Small quantities for highway and rail.§ 173.4aa Excepted quantities.§ 173.4bb De minimis exceptions.§ 173.5Agricultural operations.§ 173.5aa Oilfield service vehicles, mechanical displacement meter provers, and roadway striping vehicles exceptions.§ 173.5bb Portable and mobile refrigeration systems.§ 173.6Materials of trade exceptions.§ 173.7Government operations and materials.§ 173.8Exceptions for non-specification packagings used in intrastate transportation.§ 173.9Transport vehicles or freight containers containing lading which has been fumigated.§ 173.10Tank car shipments.§ 173.11Exceptions for shipment of light bulbs containing hazardous materials.§ 173.12Exceptions for shipment of waste materials.§ 173.13Exceptions for Class 3, Divisions 4.1, 4.2, 4.3, 5.1, 6.1, and Classes 8 and 9 materials.§ 173.14Hazardous materials in equipment in use or intended for use during transport.

Subpart B—Preparation of Hazardous Materials for Transportation22

§ 173.21Forbidden materials and packages.§ 173.22Shipper's responsibility.§ 173.22aa Use of packagings authorized under special permits.§ 173.23Previously authorized packaging.§ 173.24General requirements for packagings and packages.§ 173.24aa Additional general requirements for non-bulk packagings and packages.§ 173.24bb Additional general requirements for bulk packagings.§ 173.25Authorized packagings and overpacks.§ 173.26Quantity limitations.§ 173.27General requirements for transportation by aircraft.§ 173.28Reuse, reconditioning and remanufacture of packagings.§ 173.29Empty packagings.§ 173.30Loading and unloading of transport vehicles.§ 173.31Use of tank cars.§ 173.32Requirements for the use of portable tanks.§ 173.33Hazardous materials in cargo tank motor vehicles.§ 173.34[Reserved]§ 173.35Hazardous materials in IBCs.§ 173.36Hazardous materials in Large Packagings.§ 173.37Hazardous Materials in Flexible Bulk Containers.§ 173.40General packaging requirements for toxic materials packaged in cylinders.§ 173.41Sampling and testing program for unrefined petroleum-based products.

Subpart C—Definitions, Classification and Packaging for Class 118

§ 173.50Class 1—Definitions.§ 173.51Authorization to offer and transport explosives.§ 173.52Classification codes and compatibility groups of explosives.§ 173.53Provisions for using old classifications of explosives.§ 173.54Forbidden explosives.§ 173.55[Reserved]§ 173.56New explosives—definition and procedures for classification and approval.§ 173.57Acceptance criteria for new explosives.§ 173.58Assignment of class and division for new explosives.§ 173.59Description of terms for explosives.§ 173.60General packaging requirements for explosives.§ 173.61Mixed packaging requirements.§ 173.62Specific packaging requirements for explosives.§ 173.63Packaging exceptions.§ 173.64Exceptions for Division 1.3 and 1.4 fireworks.§ 173.65Exceptions for Division 1.4G consumer fireworks.§ 173.66Requirements for bulk packagings of certain explosives and oxidizers.§ 173.67Exceptions for Division 1.1 jet perforating guns.

Subpart D—Definitions Classification, Packing Group Assignments and Exceptions for Hazardous Materials Other Than Class 1 and Class 726

§ 173.115Class 2, Divisions 2.1, 2.2, and 2.3—Definitions.§ 173.116Class 2—Assignment of hazard zone.§ 173.117-173.119§§ 173.117-173.119 [Reserved]§ 173.120Class 3—Definitions.§ 173.121Class 3—Assignment of packing group.§ 173.124Class 4, Divisions 4.1, 4.2 and 4.3—Definitions.§ 173.125Class 4—Assignment of packing group.§ 173.127Class 5, Division 5.1—Definition and assignment of packing groups.§ 173.128Class 5, Division 5.2—Definitions and types.§ 173.129[Reserved]§ 173.132Class 6, Division 6.1—Definitions.§ 173.133Assignment of packing group and hazard zones for Division 6.1 materials.§ 173.134Class 6, Division 6.2—Definitions and exceptions.§ 173.136Class 8—Definitions.§ 173.137Class 8—Assignment of packing group.§ 173.140Class 9—Definitions.§ 173.141Class 9—Assignment of packing group.§ 173.144-173.145-173.145 [Reserved]§ 173.150Exceptions for Class 3 (flammable and combustible liquids).§ 173.151Exceptions for Class 4.§ 173.152Exceptions for Division 5.1 (oxidizers) and Division 5.2 (organic peroxides).§ 173.153Exceptions for Division 6.1 (poisonous materials).§ 173.154Exceptions for Class 8 (corrosive materials).§ 173.155Exceptions for Class 9 (miscellaneous hazardous materials).§ 173.156Exceptions for limited quantity materials.§ 173.157Reverse logistics—General requirements and exceptions for reverse logistics.

Subpart E—Non-bulk Packaging for Hazardous Materials Other Than Class 1 and Class 763

§ 173.158Nitric acid.§ 173.159Batteries, wet.§ 173.159aa Exceptions for non-spillable batteries.§ 173.160Bombs, smoke, non-explosive (corrosive).§ 173.161Chemical kits and first aid kits.§ 173.162Gallium.§ 173.163Hydrogen fluoride.§ 173.164Mercury (metallic and articles containing mercury).§ 173.165Polyester resin kits.§ 173.166Safety devices.§ 173.167ID8000 consumer commodities.§ 173.168Chemical oxygen generators.§ 173.170Black powder for small arms.§ 173.171Smokeless powder for small arms.§ 173.172Aircraft hydraulic power unit fuel tank.§ 173.173Paint, paint-related material, adhesives, ink and resins.§ 173.174Refrigerating machines.§ 173.175Permeation devices.§ 173.176Capacitors.§ 173.181Pyrophoric materials (liquids).§ 173.182Barium azide—50 percent or more water wet.§ 173.183Nitrocellulose base film.§ 173.184Highway or rail fusee.§ 173.185Lithium cells and batteries.§ 173.186Matches.§ 173.187Pyrophoric solids, metals or alloys, n.o.s.§ 173.188White or yellow phosphorus.§ 173.189Batteries containing sodium or cells containing sodium.§ 173.192Packaging for certain toxic gases in Hazard Zone A.§ 173.193Bromoacetone, methyl bromide, chloropicrin and methyl bromide or methyl chloride mixtures, etc.§ 173.194Gas identification sets.§ 173.195Hydrogen cyanide, anhydrous, stabilized (hydrocyanic acid, aqueous solution).§ 173.196Category A infectious substances.§ 173.197Regulated medical waste.§ 173.198Nickel carbonyl.§ 173.199Category B infectious substances.§ 173.201Non-bulk packagings for liquid hazardous materials in Packing Group I.§ 173.202Non-bulk packagings for liquid hazardous materials in Packing Group II.§ 173.203Non-bulk packagings for liquid hazardous materials in Packing Group III.§ 173.204Non-bulk, non-specification packagings for certain hazardous materials.§ 173.205Specification cylinders for liquid hazardous materials.§ 173.206Packaging requirements for chlorosilanes.§ 173.211Non-bulk packagings for solid hazardous materials in Packing Group I.§ 173.212Non-bulk packagings for solid hazardous materials in Packing Group II.§ 173.213Non-bulk packagings for solid hazardous materials in Packing Group III.§ 173.214Packagings which require approval by the Associate Administrator.§ 173.216Asbestos, blue, brown or white.§ 173.217Carbon dioxide, solid (dry ice).§ 173.218Fish meal or fish scrap.§ 173.219Life-saving appliances.§ 173.220Internal combustion engines, vehicles, machinery containing internal combustion engines, battery-powered equipment or machinery, fuel cell-powered equipment or machinery.§ 173.221Polymeric beads, expandable and Plastic molding compound.§ 173.222Dangerous goods in articles, machinery, or apparatus.§ 173.223Packagings for certain flammable solids.§ 173.224Packaging and control and emergency temperatures for self-reactive materials.§ 173.225Packaging requirements and other provisions for organic peroxides.§ 173.226Materials poisonous by inhalation, Division 6.1, Packing Group I, Hazard Zone A.§ 173.227Materials poisonous by inhalation, Division 6.1, Packing Group I, Hazard Zone B.§ 173.228Bromine pentafluoride or bromine trifluoride.§ 173.229Chloric acid solution or chlorine dioxide hydrate, frozen.§ 173.230Fuel cell cartridges containing hazardous material.§ 173.231Ammonium nitrate emulsion, suspension or gel.§ 173.232Articles containing hazardous materials, n.o.s.

Subpart F—Bulk Packaging for Hazardous Materials Other Than Class 1 and Class 79

§ 173.240Bulk packaging for certain low hazard solid materials.§ 173.241Bulk packagings for certain low hazard liquid and solid materials.§ 173.242Bulk packagings for certain medium hazard liquids and solids, including solids with dual hazards.§ 173.243Bulk packaging for certain high hazard liquids and dual hazard materials which pose a moderate hazard.§ 173.244Bulk packaging for certain pyrophoric liquids (Division 4.2), dangerous when wet (Division 4.3) materials, and poisonous liquids with inhalation hazards (Division 6.1).§ 173.245Bulk packaging for extremely hazardous materials such as poisonous gases (Division 2.3).§ 173.247Bulk packaging for certain elevated temperature materials.§ 173.249Bromine.§ 173.251Bulk packaging for ammonium nitrate emulsion, suspension, or gel.

Subpart G—Gases; Preparation and Packaging36

§ 173.300[Reserved]§ 173.301General requirements for shipment of compressed gases and other hazardous materials in cylinders, UN pressure receptacles, and spherical pressure vessels.§ 173.301aa Additional general requirements for shipment of specification cylinders.§ 173.301bb Additional general requirements for shipment of UN pressure receptacles.§ 173.302Filling of cylinders with nonliquefied (permanent) compressed gases or adsorbed gases.§ 173.302aa Additional requirements for shipment of non-liquefied (permanent) compressed gases in specification cylinders.§ 173.302bb Additional requirements for shipment of non-liquefied (permanent) compressed gases in UN pressure receptacles.§ 173.302cc Additional requirements for the shipment of adsorbed gases in UN pressure receptacles.§ 173.303Charging of cylinders with compressed gas in solution (acetylene).§ 173.304Filling of cylinders with liquefied compressed gases.§ 173.304aa Additional requirements for shipment of liquefied compressed gases in specification cylinders.§ 173.304bb Additional requirements for shipment of liquefied compressed gases in UN pressure receptacles.§ 173.305Charging of cylinders with a mixture of compressed gas and other material.§ 173.306Limited quantities of compressed gases.§ 173.307Exceptions for compressed gases.§ 173.308Lighters.§ 173.309Fire extinguishers.§ 173.310Exceptions for radiation detectors.§ 173.311Metal Hydride Storage Systems.§ 173.312Requirements for shipment of MEGCs.§ 173.313UN Portable Tank Table for Liquefied Compressed Gases and Chemical Under Pressure.§ 173.314Compressed gases in tank cars and multi-unit tank cars.§ 173.315Compressed gases in cargo tanks and portable tanks.§ 173.316Cryogenic liquids in cylinders.§ 173.318Cryogenic liquids in cargo tanks.§ 173.319Cryogenic liquids in tank cars.§ 173.320Cryogenic liquids; exceptions.§ 173.321Ethylamine.§ 173.322Ethyl chloride.§ 173.323Ethylene oxide.§ 173.334Organic phosphates mixed with compressed gas.§ 173.335Chemical under pressure n.o.s.§ 173.336Nitrogen dioxide, liquefied, or dinitrogen tetroxide, liquefied.§ 173.337Nitric oxide.§ 173.338Tungsten hexafluoride.§ 173.340Tear gas devices.

Subpart I—Class 7 (Radioactive) Materials47

§ 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.

Related 22 Definitions History 29 Authority 47

RegulationsTitle 49Subtitle BChapter ISubchapter CPart 173Subpart I—Class 7 (Radioactive) Materials49 CFR 173.431

Regulationhistorical

49 CFR 173.431

Activity limits for Type A and Type B packages.

Snapshot 2003-10-01 Government source

eCFR editorial compilationAuthoritative but unofficial

2 passages

(a) Except for LSA material and SCO, a Type A package may not contain a quantity of Class 7 (radioactive) materials greater than A1 for special form Class 7 (radioactive) material or A2 for normal form Class 7 (radioactive) material as listed in § 173.435, or, for Class 7 (radioactive) materials not listed in § 173.435, as determined in accordance with § 173.433.

(b) The limits on activity contained in a Type B, Type B(U), or Type B(M) package are those prescribed in §§ 173.416 and 173.417, or in the applicable approval certificate under §§ 173.471, 173.472 or 173.473.

Previous§ 173.428 Next§ 173.433

Related 22 Definitions History 29 Authority 47 Community

Only explicit, source-backed relationships are shown.

Rulemaking21

Hazardous Materials: Harmonization With International Standards

173.431 · cited in rulemaking

90 FR 31745

Hazardous Materials: Notice of Applications for New Special Permits

173.431 · cited in rulemaking

89 FR 74373

Hazardous Materials: Notice of Actions on Special Permits

173.431(a) · cited in rulemaking

89 FR 22769

Hazardous Materials: Notice of Applications for New Special Permits

173.431(a) · cited in rulemaking

87 FR 55743

Hazardous Materials: Compatibility With the Regulations of the International Atomic Energy Agency

173.431(b) · cited in rulemaking

82 FR 43286

Hazardous Materials: Notice of Applications for Special Permits

173.431(a) · cited in rulemaking

74 FR 10985

Office of Hazardous Materials Safety; Actions on Special Permit Applications

173.431 · cited in rulemaking

73 FR 61928

Office of Hazardous Materials Safety; Notice of Applications for Modification of Special Permit

173.431 · cited in rulemaking

73 FR 34981

Office of Hazardous Materials Safety; Actions on Special Permit Applications

173.431 · cited in rulemaking

72 FR 58713

Office of Hazardous Materials Safety; Actions on Special Permit Applications

173.431 · cited in rulemaking

72 FR 25162

Hazardous Materials: Revision and Reformatting of Requirements for the Authorization To Use International Transport Standards and Regulations

173.431 · cited in rulemaking

71 FR 55271

Office of Hazardous Materials Safety; Notice of Applications for Modification of Special Permit

173.431 · cited in rulemaking

71 FR 47288

Office of Hazardous Materials Safety; Actions on Special Permit Applications

173.431 · cited in rulemaking

71 FR 19614

Office of Hazardous Materials Safety; Notice of Application for Special Permits

173.431 · cited in rulemaking

Hazardous Materials: Revision and Reformatting of Requirements for the Authorization To Use International Transport Standards and Regulations

173.431 · cited in rulemaking

70 FR 74865

Office of Hazardous Materials Safety; Notice of Application for Special Permits

173.431 · cited in rulemaking

69 FR 55113

Hazardous Materials Regulations; Compatibility With the Regulations of the International Atomic Energy Agency; Correction; Final Rule

173.431 · cited in rulemaking

Hazardous Materials Regulations; Compatibility With the Regulations of the International Atomic Energy Agency

173.431 · cited in rulemaking

68 FR 52844

Hazardous Materials Regulations: Penalty Guidelines and Other Procedural Regulations

173.431 · cited in rulemaking

67 FR 21328

Hazardous Materials Regulations; Compatibility With the Regulations of the International Atomic Energy Agency

173.431 · cited in rulemaking

60 FR 50292

Hazardous Materials Transportation Regulations; Compatibility with Regulations of the International Atomic Energy Agency

173.431 · cited in rulemaking

Interpretations & guidance1

PHMSA Guidance, Radioactive Material Enforcement Guidance (Laminated sheets)

Radioactive Material Enforcement Guidance (Laminated sheets)

173.431(a) · guidance cites regulation

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Claims link back to retrieved source passages.

Record details

Retrieved: Aug 20, 2026
Version: 2003-10-01

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