API 650 welded steel oil storage tanks level gauge
Upon completion of API 650 welded steel oil storage tanks construction, provide Purchase with a Vendor's Certification that the tank conforms to the requirements of API 650 and to the additional requirements as specified.
API 620 storage tanks relative standard for referenceAPI Spec 5L, Specification for Line PipeAPI RP 520, Sizing, Selection, and Installation of Pressure-relieving Devices in Refineries, Part II—InstallationASME B31.3, Chemical Plant and Petroleum Refinery Piping (ANSI/ASME B31.3) ASME B36.10M, Welded and Seamless Wrought Steel Pipe (ANSI/ASME B36.10) ASME B96.1, Welded Aluminum-Alloy Storage Tanks (ANSI/ASME B96.1)ASTM A36 Structural Steel for API 650 welded steel oil storage tanksASTM A53 Zinc-Coated Welded and Seamless Pipe
The specifications used in the design of large oil tanks, API 650 welded steel oil storage tanks mainly include American Petroleum Institute Standard API 650, Japanese Industrial Standard JIS B8501, British Industrial Standard BS2654 and Chinese National Standard GB50341 from a global perspective. The formulas used in each specification are based on the hoop stress in the membrane theory. Each specification is based on the performance characteristics of materials and the construction technology level of their respective countries to determine the allowable stresses and weld coefficients. Therefore, the calculation results of tank wall thickness of API 650 welded steel oil storage tanks with the same volume are sometimes quite different according to different specifications.
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