ASTM A524 pipe API Std 650 unanchored tanks

The main advantages of the external floating roof API Std 650 unanchored tanks are large storage capacity, suitable for storing more than 10000 cubic meters of crude oil. Compared with the internal floating roof API Std 650 unanchored tanks, the production of external floating roof API Std 650 unanchored tanks is simple and the steel consumption is less. However, the central drainage system of external floating roof API Std 650 unanchored tanks should be installed on the outer floating roof to ensure that the accumulated water can be discharged smoothly in rainy and snowy days, and avoid sinking accident.

Welding of Large Steel storage tank Primary Components
a)Longitudinal and circumferential shell joints and joints that connect the API Std 650 unanchored tanks annular bottom plates together.
b)Joints that connect sections of compression rings and sections of shell stiffeners together. Backup bars may be used for these joints with complete penetration and complete fusion detail.
c)Joints around the periphery of a shell insert plate.
d)Joints that connect the shell to the bottom, unless a method of leak checking is used (see Q.8.2.1).

These API 650 documents will define the bases of design, operation, inspection, tests, examinations, and maintenance of an API Std 650 unanchored tanks industrial facility. Bidders will study and analyze all this API 650 documentation, both during the preparation of the quotation and during the execution of each project activity.