Prior to departure, a commercial driver conducts a pre-trip safety inspection on a tractor-trailer unit transporting non-hazardous general freight. When inspecting the cab's emergency fire protection equipment, which standard must the portable fire extinguisher satisfy to comply with safety regulations and be deemed ready for service?
- AIt must be a pressurized water canister rated for Class A fires only and stowed loose under the driver's seat for rapid retrieval.
- It must have an Underwriters Laboratories rating of at least 5 B:C, show a full pressure charge on its gauge, and be securely mounted in an accessible location.Cevap
- CIt may show a discharged pressure gauge as long as the vehicle is equipped with spare electrical fuses and three reflective warning triangles.
- DIt must be rated exclusively for Class D combustible metals and pressurized to discharge a water stream into engine compartment louvers during a blaze.
Cevap
The portable fire extinguisher must have a rating of at least 5 B:C, display an adequate charge on its gauge, and be securely mounted in an accessible location.
Federal commercial motor vehicle safety regulations require power units transporting non-hazardous cargo to be equipped with a fire extinguisher having an Underwriters Laboratories rating of 5 B:C or more (or two 4 B:C units). The extinguisher must be fully charged, properly filled, and securely fastened in a bracket where it is readily accessible for immediate use.
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Commercial Motor Vehicle Emergency Fire Extinguisher Specifications and Inspection Protocols
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