Behind the Chain: Tanker Truck Safety
Tanker trucks carry liquids like fuel, water, and chemicals safely.
One key safety feature is the extra chain hanging from the back.
This chain “serves as a grounding device.”
As liquids move inside the tank, friction creates static electricity, which could spark and ignite flammable cargo.
The chain drags along the ground, “safely discharging the electricity into the earth,” drastically reducing fire risks.
Grounding chains became standard after repeated accidents highlighted the dangers of static sparks.
Today, authorities like the U.S. Department of Transportation regulate tanker safety, and inspectors routinely check the chains.
While modern methods—like static grounding reels, anti-static additives, and special tank coatings—exist, the chain remains effective.
Some think it is decorative, but “it prevents static discharge—a critical safety measure.”
Proper maintenance ensures it continues protecting drivers, cargo, and the environment.
