Floating roof API 650 partially anchored liquid-storage tanks
The API 650 specification provides guidelines for the API 650 partially anchored liquid-storage tanks design, manufacturing, materials, installation and inspection of welded vertical and cylindrical tanks. Such containers must be on the ground and have a closed or open top.
The impact tests for API 620 welded storage tanks used pipe (including structural members made of pipe), bolting, and forgings, shall be in accordance with ASTM specifications ASTM A333 (seamless only) pipe, ASTM A36 Mod 1 plate, ASTM A131 Grades CS, D, and E steel plate, ASTM A633 Grade A CSA G40.21 Grades 38WT, 44WT and 50WT high-strength low-alloy structural steel plate, ASTM A350 carbon and low alloy steel forgings, and ASTM A320 Grade L7 bolts.
In order to prevent the deformation of the bottom of metal vertical storage tank, API 650 partially anchored liquid-storage tanks during welding, the number of welders should be reasonably distributed. When welding metal vertical API 650 partially anchored liquid-storage tanks, personnel and welding position shall be reasonably allocated according to the actual situation of welding personnel, and random welding is not allowed.
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