CDL Hazardous Materials Endorsement (HME)Loading and Unloading Hazardous MaterialsHard
A driver is transporting a bulk quantity of Class 8 (Corrosive) material in a cargo tank. What is the minimum distance a qualified person must remain from the cargo tank during the loading or unloading operation?
- AWithin 50 feet of the cargo tank.
- BWithin 100 feet of the cargo tank.
- CWithin 25 feet of the cargo tank.
- DWithin 75 feet of the cargo tank.
Show answer & explanationAnswer & explanation
Correct answer: C. Within 25 feet of the cargo tank.
For most hazardous materials, including Class 8 corrosives in cargo tanks, a qualified person must be in attendance and remain within 25 feet of the cargo tank during the entire loading or unloading operation. This ensures immediate response to any spills or incidents.
Why the other options are wrong
- A. 50 feet is incorrect; 25 feet is the standard for most non-flammable/non-explosive HazMat.
- B. 100 feet is also incorrect and exceeds the standard requirement.
- D. 75 feet is incorrect and exceeds the standard requirement.
Cargo Tank Loading/Unloading Attendance Distance
The maximum distance a qualified person can be from a hazardous materials cargo tank during loading or unloading operations to ensure immediate supervision and response.
- Generally 25 feet for most HazMat.
- Specific distances apply to certain materials (e.g., Class 1, 2.1, 3).
- Ensures immediate response in case of incident.
Memory trick: 25 feet close, for tanks that corrode, stay alert, keep it safe, that's the code.