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Specific requirements govern the segregation and separation of hazardous materials.
For highway transportation of hazardous materials, the segregation requirements apply to materials that are in:
The following segregation table specifies the restrictions on loading, transporting and storing hazardous materials when offered for or transported by highway.
Note: Cyanides and cyanide mixtures or solutions may not be stored, loaded and transported with acids. Division 4.2 materials may not be stored, loaded and transported with Class 8 liquids.
Class or Division | Notes | 1.1, 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.3 gas Zone A | 2.3 gas Zone B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 liquids PG I Zone A | 7 | 8 liquids only | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Explosives. | 1.1 and 1.2 | A | * | * | * | * | * | x | x | x | x | x | x | x | x | x | x | x | x | x |
Explosives. | 1.3 | * | * | * | * | * | x | x | x | x | x | x | x | x | x | x | ||||
Explosives. | 1.4 | * | * | * | * | * | o | o | o | o | o | o | o | |||||||
Very insensitive explosives. | 1.5 | A | * | * | * | * | * | x | x | x | x | x | x | x | x | x | x | x | x | x |
Extremely insensitive explosives. | 1.6 | * | * | * | * | * | ||||||||||||||
Flammable gases. | 2.1 | x | x | o | x | x | o | o | o | |||||||||||
Non-toxic, non-flammable gases. | 2.2 | x | x | |||||||||||||||||
Poisonous gas Zone A. | 2.3 | x | x | o | x | x | x | x | x | x | x | x | x | |||||||
Poisonous gas Zone B. | 2.3 | x | x | o | x | o | o | o | o | o | o | o | o | |||||||
Flammable liquids. | 3 | x | x | o | x | x | o | o | x | |||||||||||
Flammable solids. | 4.1 | x | x | x | o | x | o | |||||||||||||
Spontaneously combustible materials. | 4.2 | x | x | o | x | x | o | x | x | |||||||||||
Dangerous when wet materials. | 4.3 | x | x | x | x | o | x | o | ||||||||||||
Oxidizers. | 5.1 | A | x | x | x | x | o | o | x | o | ||||||||||
Organic peroxides. | 5.2 | x | x | x | x | o | x | o | ||||||||||||
Poisonous liquids PG I Zone A. | 6.1 | x | x | o | x | o | x | x | x | x | x | x | x | |||||||
Radioactive materials. | 7 | x | x | o | ||||||||||||||||
Corrosive liquids. | 8 | x | x | o | x | x | o | o | x | o | o | o | x |
How to use the table 177.848(e)
To use the Segregation Table:
The absence of any hazard class or division in the table indicates that no restrictions apply.
Transport vehicle onboard a vessel 176.83(b). When a transport vehicle is to be transported by vessel, other than a ferry vessel, hazardous materials on or within that vehicle must be stowed and segregated in accordance with 176.83(b).
Subsidiary hazards 177.848(e)(6). When the segregation requirements for packages bearing subsidiary hazard labels are more restrictive than those of the primary hazard, the subsidiary segregation requirements must be followed.
However, hazardous materials of the same class may be stowed together without regard to the subsidiary segregation requirements if the materials are incapable of reacting so as to cause: