Fiberglass USTs do not have to have corrosion protection.

• A. False
• B. Sometimes
• C. Only with external coatings
• D. True

Answer: (D)

Fiberglass USTs are non-metallic, so their tanks don’t corrode like steel does when exposed to soil and fuels. The resin-and-fiber material provides a corrosion-resistant barrier, which is why external corrosion protection isn’t required for the tank shell. Of course, other safety requirements—such as secondary containment and leak detection, and protection for any metallic components—still apply, but the need for corrosion protection on the fiberglass tank itself is not necessary.