What does API 650 cover?

What does API 650 cover?

• A. Welded steel tanks for oil storage
• B. Piping design standards
• C. Structural steel shapes
• D. Vessel insulation standards

Answer: (A)

API 650 sets the rules for welded steel tanks used to store oil and other liquids above ground. It tells you how these tanks should be designed, built, welded, inspected, and tested, including details about materials, foundations, shell and bottom construction, coatings, venting, and corrosion protection. In short, it’s the standard that governs welded steel oil-storage tanks from design through service.

Other options don’t fit because piping design is covered by piping-specific standards, not tank standards; structural steel shapes are governed by structural/steel fabrication codes, not tank design; and insulation standards are addressed by different codes and guidelines rather than API 650.