This standard is intended to help Purchasers and Manufacturers in ordering, fabricating, and erecting tanks it is not intended to prohibit Purchasers and Manufacturers from purchasing or fabricating tanks that meet specifications other than those contained in this standard. This standard does not present or establish a fixed series of allowable tank sizes instead, it is intended to permit the Purchaser to select whatever size tank may best meet their needs. This standard provides industry with tanks of adequate safety and reasonable economy for use in the storage of petroleum, petroleum products, and other liquid products. free api 650 tank standards Verified Details: Atmospheric Storage Tank Specification (Supplement to API Standard 650) August 2017. By Authority of the Code of Federal Regulations: 195. This standard applies only to tanks whose entire bottom is uniformly supported and to tanks in non-refrigerated service that have a maximum design temperature of 93 ☌ (200 ☏) or less. BY ORDER OF THE EXECUTIVE DIRECTOR Office of the Federal Register Washington, D.C. The API STD 650 establishes minimum requirements for material, design, fabrication, erection, and inspection for vertical, cylindrical, aboveground, closed- and open-top, welded storage tanks in various sizes and capacities for internal pressures approximating atmospheric pressure (internal pressures not exceeding the weight of the roof plates), but a higher internal pressure is permitted when additional requirements are met.
