API standard 650 SUG I tanks convective spectral acceleration parameter
The API standard 650 SUG I tanks outer tank, which is not in contact with the vaporized liquefied gas, may be of single-welded lap or single-welded butt construction when the thickness does not exceed 3/8 in.; at any thickness, the API 620 oil tank outer tank may be of double- welded butt construction without necessarily having full fusion and penetration. Single-welded joints shall be welded from the outside to prevent corrosion and the entrance of moisture.
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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 standard 650 SUG I tanks are: natural ventilation loss, static storage loss, dynamic liquid level loss. In the use of API standard 650 SUG I tanks, static storage loss and dynamic liquid level loss are common losses.