API standard 650 uplifting tanks seismic base shear

Usually, the soil resistance of the foundation should be considered before the design and construction of API standard 650 uplifting tanks. The soil endurance in the API standard 650 uplifting tanks construction area plays a decisive role in the basic cost of the tank. In areas with high soil resistance, not only the cost of foundation treatment can be greatly reduced, but also the ratio of height to diameter of storage tank can be obtained. Therefore, the investment cost of the API standard 650 uplifting tanks can be greatly saved in the area with large soil resistance.

Production Weld Tests
Production weld test plates shall be welded for API standard 650 uplifting tanks primary-component butt-welded shell plates when welding procedure qualifications are required to be impact tested per Q.6.2 and Q.6.3. The number of production weld tests shall be based on the requirements of Q.6.6.3 and Q.6.6.4. The locations impact tested (i.e., HAZ and/or weld deposits) shall likewise be the same as required for weld procedure qualifications per Q.6.2 and Q.6.3. Weld testing shall be in accordance with Q.6.6.5. Test plates shall be made from plates produced only from the heats that are used to produce the shell plates for the large welded steel tank.

The API 650 is the American standard for welded flat-bottomed vertical API standard 650 uplifting tanks storage tanks. This standard dictates tank design, manufacture, welding, inspection and installation requirements.

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