API Above-Ground Storage Tanks
HES provides custom design of tanks that meet API standards and customer specific requirements with in-house engineering and experienced drafters.
API 650 STANDARD
API 650 is the standard governing welded tanks for oil storage. It dictates tank design, fabrication, welding, inspection, and erection requirements. API 650 is widely used for tanks that are designed to internal pressures of 2.5 PSI or less and store products such as crude oil, gasoline, chemicals and produced water. Advance Tank has extensive experience with API 650 tanks ranging in diameter from 8′ – 300′ for refineries, terminals, pipeline facilities and other clients.
API 620 STANDARD
API 620 governs the design and construction of large, welded, low pressure storage tanks. These storage tanks operate at 250°F or less with an operating pressure of up to 15 PSI. API 620 Tanks are generally utilized for Liquefied Natural Gas (LNG) storage as well as other chemicals which require internal design pressures in excess of those allowed by API 650.