30 CFR §36.31
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each unit of mobile diesel-powered transportation equipment shall be fitted with a fire extinguisher carried in a location easily accessible to the operator and protected by position from external damage. Liquid carbon dioxide extinguishers shall contain an active charge of not less than 4 pounds. Pressurized dry chemical extinguishers shall contain an active charge of not less than 2 1/2 pounds.