API Std 650 anchored tanks finish of plate edges

The density of the liquid API 620 large welded, low pressure storage tanks stored shall be its maximum density within the range of design temperatures, but no less than 36 lbf/ft3. The maximum allowable tensile stress shall be taken from Table 5-1 or Table Q-3. For the maximum allowable stresses for design loading combined with wind or earthquake loads, see API Standard 620 5.5.6 for carbon steel and Q.3.3.5 for stainless steel and aluminum.

The application of API 650 is as stated by the American Petroleum Institute: The production and installation of our ground welded steel API Std 650 anchored tanks storage tanks are generally used in industry; under normal circumstances, the storage tanks installed on the industrial site in the United States are in accordance with API 650, API 620 and API 12d Standards are established.

Volatilization is the characteristic of oil. Under normal temperature and pressure, as long as the oil is in contact with air, the surface will volatilize. Through scientific analysis and summary, the causes of oil volatilization loss in API Std 650 anchored tanks are: natural ventilation loss, static storage loss, dynamic liquid level loss. In the use of API Std 650 anchored tanks, static storage loss and dynamic liquid level loss are common losses.