Tanker trucks are specialized vehicles built to transport liquids and gases like fuel, water, chemicals, and food-grade products. Their large cylindrical tanks sit on a reinforced chassis, with valves, hoses and safety systems designed to keep hazardous materials contained.
As these trucks move, the liquid inside sloshes around and rubs against the tank walls. That movement, combined with the truck’s motion over the road, creates friction – and friction creates static electricity.
With flammable cargo such as gasoline, diesel or solvents, a single uncontrolled spark can be enough to ignite vapors and trigger a fire or explosion. That’s where the hanging chain comes in.
The extra chain acts as a grounding device. As it drags along the road surface, it provides a direct path for static electricity to dissipate safely into the ground, instead of building up on the truck and discharging as a spark.
Continue reading on the next page 👇
