Internal structural members of API 650 storage tank

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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.Similarities between API 650 and API 620 tanks Both tanks are used for storage purposes. Both API 620 and API 650 containers API 650 storage tank can be made of carbon steel, austenitic stainless steel and nickel alloy (only for low temperature).Our company has a comfortable office environment, covers a large area, can accommodate hundreds of people working at the same time. All kinds of green plants are placed in the company, with a healthy office environment. Our company also has gym, table tennis, leisure bar, kitchen, refrigerator, microwave oven and other equipment. Humanized construction provides comfortable office environment for employees.The structure of the API 650 storage tank foundation mainly includes the insulating anticorrosion layer on the top surface of the foundation, the tank wall support, the edge retaining structure, the sand cushion, the oil and water barrier, the detection signal tube and other structures. The construction materials and requirements of each basic structure of the storage tank are different. After the structure of the API 650 storage tank foundation is built in accordance with the construction requirements, the settlement of the storage tank foundation needs to be observed, and the uneven settlement value of the storage tank foundation should be within the allowable safety range.