Which of the following describes a type of storage tank?

Which of the following describes a type of storage tank?

• A. Concrete, steel welded, collapsible
• B. Internal floating roof tanks
• C. Aluminum pressure tanks
• D. Plastic bag tanks

Answer: (A)

Storage tanks are classified by how they’re built and what they’re made from. The broad, common forms you’ll encounter are concrete tanks, welded steel tanks, and collapsible tanks. This set covers permanent rigid structures (concrete and welded steel) as well as temporary, portable options (collapsible tanks). That’s why the description including concrete, steel welded, and collapsible best represents a type of storage tank. Describing a tank as having an internal floating roof refers to a feature of the tank’s roof design rather than a primary category of storage tanks. Aluminum pressure tanks describe a pressure vessel, which isn’t a general storage-tank category. Plastic bag tanks are not standard rigid storage-tank types.

Storage tanks are classified by how they’re built and what they’re made from. The broad, common forms you’ll encounter are concrete tanks, welded steel tanks, and collapsible tanks. This set covers permanent rigid structures (concrete and welded steel) as well as temporary, portable options (collapsible tanks). That’s why the description including concrete, steel welded, and collapsible best represents a type of storage tank.

Describing a tank as having an internal floating roof refers to a feature of the tank’s roof design rather than a primary category of storage tanks. Aluminum pressure tanks describe a pressure vessel, which isn’t a general storage-tank category. Plastic bag tanks are not standard rigid storage-tank types.