API standard 650 cylindrical liquid-storage tank hydrostatic testing requirements
API 650 Application As described by the American Petroleum Institute, the fabrication and installation of our surface welded API standard 650 cylindrical liquid-storage tank steel storage tanks is normally used in industrial applications. In general, our standards for industrial on-site installation of storage tanks are established according to API 650, API 620 and API 12D.
API standard 650 cylindrical liquid-storage tank, Oil tank is a large-scale storage equipment used to store oil materials. Usually, the service life of API standard 650 cylindrical liquid-storage tank is related to the actual working conditions. The design service life of most oil tanks is 20 years, and some of them are 10-15 years. Generally, none of them is less than 10 years. However, the design service life of API standard 650 cylindrical liquid-storage tank is on the one hand, which is an ideal state, but there are many objective factors in the actual process, it is impossible to achieve the designed service life. How to effectively increase the service life of API standard 650 cylindrical liquid-storage tank?
The ring of API standard 650 cylindrical liquid-storage tank annular plates shall have a circular outside circumference, but may have a regular polygonal shape inside the tank shell with the number of sides equal to the number of annular plates. These pieces shall be butt-welded in accordance with API Standard 620 R.7.1.1, Item b. The plates of the first shell course shall be attached to the annular bottom plates by welds as required by API Standard 620 5.9.5 except when a full penetration weld is used or required.
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