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HM Safety Permit (HMSP): Definition The HMSP is issued to carriers transporting certain types and various amounts of hazardous materials.
Use of a HM Safety Permit The following hazardous materials transported in varying quantities, 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 (55lbs) of a Division 1.1, 1.2 or 1.3 material, or an amount of Division 1.5 materials requiring a placard under Part 172 subpart F of 49 CFR.
Toxic by Inhalation Materials
- Hazard Zone - A More than 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) of §173.133(a) of 49 CFR.
- Hazard Zone B - A "material poisonous by inhalation," as defined in §171.8 of 49 CFR, that meets the criteria for "Hazard Zone B," as specified in §173.116(a) or §173.133(a) of 49 in bulk packaging (capacity greater than 450 L [119 gallons] for liquids and a water capacity greater than 454 kg [1,000 pounds] for gas receptacles.
- Hazard Zone C & D - A "material poisonous by inhalation," as defined in §171.8 of 49 CFR, that meets the criteria for "Hazard Zone C," or Hazard Zone D," as specified in §173.116(a) or §173.133(a) of 49 CFR, in a packaging having a capacity equal to or greater than 13,248L (3,500 gallons).
- Methane - A shipment of compressed or refrigerated liquid methane or liquefied natural gas or other gas with a methane content of at least 85 percent in a bulk packaging having a capacity equal to or greater than 13,248 L (3,500 gallons) for liquids or gases.
To transport hazardous materials listed above, submit form MCS-150B to register for a USDOT number and HMSP at the same time. If you already have a USDOT number, update your MCS-150 registration with the appropriate material (s) to receive an HMSP.
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