API 650 aluminum storage tanks roof

Welding certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For both API 650 aluminum storage tanks storage tank API 650, non-destructive inspection is required, but third-party inspection is not required.

In this project, an elemental area of tank wall used is constructed of ASTM A442 Grade 55 steel plate subjected to a meridional unit force, T1, of 4000 lbf/in.2 tension and a latitudinal unit force, T2, of 5060 lbf/in.2 compression. The meridional radius of curvature, R1, is 75 in., and the length of the normal from the surface to the axis of revolution, R2, is 300 in. The joints in the wall are of double-welded butt-joint construction with a tensile efficiency of 85%. A corrosion allowance of 1/16 in. is required.
The problem in this example is to graphically find the minimum thickness of tank wall required for the given conditions (see 5.10.3.3).
Solution: As determined from Table 5-1, the maximum allowable tensile stress value, Sts, for ASTM A442 Grade 55 steel plate in simple tension is 16,500 lbf/in.2. Since the compressive stress is latitudinal, the governing value of R in this situation is R1, or 75 in.

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 650 aluminum storage tanks are: natural ventilation loss, static storage loss, dynamic liquid level loss. In the use of API 650 aluminum storage tanks, static storage loss and dynamic liquid level loss are common losses.

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Our company will accept the product quality objection registration record, pass it to the API 650 aluminum storage tanks production unit and relevant departments, and timely coordinate the supervision of product API 650 aluminum storage tanks quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.