General This specification covers material@ design@ fabrication@ and testing requirements for shop-fabricated vertical@ cylindrical@ aboveground@ closed top@ welded steel storage tanks in various standard sizes and capacities for internal pressures approximately atmospheric@ not to exceed those listed in Table 1@ Column 2. This specification is designed to provide the oil production industry with tanks of adequate safety and reasonable economy for use in the storage of crude petroleum and other liquids commonly handled and stored by the production segment of the industry. This specification is for the convenience of purchasers and manufacturers in ordering and fabricating tanks. Compliance The manufacturer is responsible for complying with all of the provisions of this specification. The purchaser may make any investigation necessary to be satisfied of this compliance by the manufacturer and may reject any material that does not comply with this specification. It is urged that the purchaser avail him/herself of this right and furnish his/her own inspection independently of any supervisory inspection furnished by the manufacturer@ and that the purchaser's inspector follow closely all the details of shop fabrication and/or field construction and testing herein specified which affect the integrity and safety of the completed structure.