If you’ve ever noticed a chain dangling from the rear of a tanker truck, you might wonder about its purpose. While it seems simple, this chain plays a critical role in ensuring safety.
When a tanker truck moves, the friction between the air and the truck, combined with the movement of fuel inside the tank, generates static electricity. If this static electricity isn’t dissipated, it can lead to a spark. In the presence of flammable materials like fuel, a spark can result in catastrophic explosions or fires.
To mitigate this risk, the metal chain serves as a grounding device. As it drags along the ground, it provides a continuous path for static electricity to discharge safely into the earth. This prevents the accumulation of static charges on the truck, significantly reducing the risk of accidents.
This simple yet vital safety measure is a testament to how small innovations can have life-saving impacts. It ensures that vehicles transporting flammable materials remain safe, making it an indispensable component of tanker truck design.