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What Hazardous Materials require a Hazardous Materials Safety Permit?

The following hazardous materials carried in these quantity amounts will require an HM Safety Permit:

  • Radioactive Materials: A highway route-controlled quantity of Class 7 material, as defined in 173.403 of 49 CFR.
  • Explosives: More than 25kg (55 pounds) of a Division 1.1, 1.2 or 1.3 material, or an amount of a Division 1.5 material requiring a placard under Part 172 Subpart F of 49 CFR.
  • Toxic by Inhalation Materials:
    • Hazard Zone A: More that one liter (1.08 quarts) per package of a "material poisonous by inhalation," as defined in 171.8 of 49 CFR, that meets the criteria for "hazard zone A," as specified in 173.116(a) or 173.133(a) of 49 CFR
    • Hazard Zone B: A "material poisonous by inhalation," as defined in 171.8 of this title, that meets the criteria for "hazard zone B," as specified in 173.116(a) or 173.133(a) of 49 CFR in a bulk packaging (capacity greater than 450 L [119 gallons])
    • Hazard Zone C & D: A "material poisonous by inhalation," as defined in 171.8 of this title, that meets the criteria for "hazard zone C," or "hazard zone D," as specified in 173.116(a) of this title, in a packaging having a capacity equal to or greater than 13,248 L (3,500 gallons)
  • Methane: A shipment of compressed or refrigerated liquefied methane or liquefied natural gas or other liquefied gas with a methane content of at least 85% in a bulk packaging having a capacity equal to or greater than 13,248 L (3,500 gallons) for liquids or gases.

Last Updated : April 15, 2014