Never realized this
Tanker trucks are specialized vehicles designed to transport liquid or gaseous products, such as fuel, water, chemicals, and food-grade liquids. These trucks are equipped with a cylindrical tank mounted on a chassis, which is engineered to safely contain and transport these substances. The design and components of tanker trucks are crucial for ensuring the safe and efficient delivery of their cargo. Among the various components, one might notice an extra chain hanging down at the back of the truck. This seemingly simple feature plays a significant role in the overall safety and functionality of the vehicle.
The Purpose of the Extra Chain on Tanker Trucks
The extra chain hanging from the back of a tanker truck serves as a grounding device. Its primary purpose is to dissipate static electricity that can build up during the transportation of flammable liquids. As the truck moves, friction between the liquid and the tank, as well as the movement of the truck itself, can generate static electricity. If not properly managed, this static charge can lead to sparks, which pose a significant risk of igniting the flammable cargo. The chain drags along the ground, providing a path for the static electricity to safely discharge into the earth, thereby reducing the risk of fire or explosion.
