CDL Hazardous Materials Endorsement (HME)Loading and Unloading Hazardous MaterialsHard
A driver is transporting Class 5.2 (Organic Peroxides) and Class 3 (Flammable Liquids) in separate packages on the same vehicle. According to the segregation table, what is the required segregation for these two hazard classes?
- AThey may be loaded together if a fire-resistant barrier is placed between them.
- BThey must not be loaded together on the same transport vehicle.
- CThey must be separated by a minimum distance of 3 feet.
- DThey may be loaded together without restriction.
Show answer & explanationAnswer & explanation
Correct answer: B. They must not be loaded together on the same transport vehicle.
According to the Hazardous Materials Segregation Table (49 CFR 177.848(e)), Class 5.2 (Organic Peroxides) and Class 3 (Flammable Liquids) are incompatible and designated with a 'X' in the table, meaning they 'must not be loaded together in the same transport vehicle.' Organic peroxides can be highly reactive and flammable, and their presence with other flammable materials significantly increases the risk of fire or explosion.
Why the other options are wrong
- A. A fire-resistant barrier is not sufficient for materials marked with an 'X' in the segregation table; they are completely prohibited from co-transport.
- C. A 3-foot separation is not sufficient for these incompatible materials; they are prohibited from being on the same vehicle.
- D. This is incorrect; these classes are incompatible and require segregation.
Segregation: Organic Peroxides & Flammable Liquids
Class 5.2 (Organic Peroxides) and Class 3 (Flammable Liquids) are incompatible and are prohibited from being transported together on the same vehicle.
- Organic peroxides are highly reactive and can be explosive/flammable.
- Flammable liquids are easily ignited fuels.
- Combining them creates a severe risk of fire or explosion.
Memory trick: Organic peroxides and flammables: 'Never' together, 'X' marks the spot.