The API-12B Specification for storage of production liquids was designed to provide the oil production industry with safe and economical bolted tanks for use in the storage of crude petroleum and other liquids commonly handled and stored by the production segment.
API Spec 12D covers material, design, fabrication, and testing requirements for vertical, cylindrical, aboveground, closed-top, welded steel storage tanks with internal pressures approximately atmospheric at various sizes and capacities, ranging from 500 to 10,000 barrels.
This specification covers material, design, fabrication, and testing requirements for new shop-fabricated vertical, cylindrical, aboveground, welded steel storage tanks in the standard sizes and capacities, and for internal pressures approximately atmospheric, given in Table 1.