ADVERTISEMENT
3. Why Tankers Are Especially at Risk
Tanker trucks are more prone to static buildup than regular vehicles for several reasons:
- Large metallic surface area: The body of the truck is often made of metal, which easily accumulates electrical charge.
- Transporting flammable liquids: Gasoline, ethanol, and other fuels have low ignition points.
- Long distances: Continuous motion over hundreds of miles increases the likelihood of static buildup.
- Weather conditions: Dry air and asphalt increase static electricity, especially in summer months.
Without a grounding chain, the risk of an accidental spark during fueling or unloading is significantly higher.
4. Static Discharge Chains vs. Other Safety Measures
You might wonder: aren’t there other ways to prevent static buildup? Tanker trucks use a combination of safety systems:
a) Rubber Tires
- Rubber is an insulator and naturally resists static, but it alone isn’t enough because static can accumulate on the metal body.
b) Bonding Cables
- During fuel transfer at gas stations or fuel depots, a bonding cable connects the truck to the storage tank, equalizing electrical charge.
c) Grounding Chains
- Unlike bonding cables, the chain protects while the truck is moving, not just during refueling.
- It continuously dissipates static to prevent sparks from building up.
d) Anti-Static Tires
- Some tankers use tires with conductive components to reduce static buildup, but these are usually supplemented by chains for extra safety.
5. Common Misconceptions About the Chain
Many drivers have misconceptions about this chain:
- “It’s just to warn drivers behind me.”
While it may swing visibly, it’s not a warning device; its purpose is static discharge. - “It’s for braking or mechanical support.”
The chain has no braking function and doesn’t stabilize the truck mechanically. - “It’s a decorative or leftover piece.”
Despite appearances, it’s an intentional safety feature mandated in some regions.
ADVERTISEMENT
