CDL Hazardous Materials Endorsement (HME)Loading and Unloading Hazardous MaterialsEasy
A driver is transporting Division 2.1 (Flammable Gas) cylinders. Which of the following is an acceptable method for securing these cylinders in a vehicle?
- AStacking them horizontally without any restraints, as long as they are tightly packed.
- BStanding them upright, secured by chains or straps to prevent movement.
- CLying them flat on the floor, unsecured, to prevent rolling.
- DPlacing them loosely in an enclosed trailer, relying on the trailer walls for restraint.
Show answer & explanationAnswer & explanation
Correct answer: B. Standing them upright, secured by chains or straps to prevent movement.
Cylinders of flammable gas must be secured to prevent movement and potential damage during transport. Standing them upright and securing them with chains, straps, or other approved restraining devices is a standard and safe practice.
Why the other options are wrong
- A. Stacking without restraints is dangerous; even tightly packed, they can shift or be damaged by impacts.
- C. Unsecured cylinders, regardless of orientation, are a hazard as they can shift or roll.
- D. Loosely placed cylinders can shift, fall, or become damaged, leading to leaks or explosions.
Flammable Gas Cylinder Securement
Methods used to prevent movement, rolling, or falling of compressed gas cylinders during transportation to ensure safety and prevent leaks or ruptures.
- Cylinders must be securely restrained.
- Upright orientation is often preferred for stability.
- Chains, straps, and racks are common securement devices.
Memory trick: Cylinders secured, no more fear, upright and tied, safety's clear.