Maximum design temperature of API standard 650 open-top tanks
API 650 petroleum storage tank pipeline stress and product pressure, tank pressure, uniform or non-uniform temperature difference between the tank wall and the tank bottom, which cause the radial displacement and longitudinal rotation of the API standard 650 open-top tanks tank wall at the opening to affect the oil tank wall The impact is obvious. Therefore, the design must ensure that the load applied by the external pipeline on the opening of the tank wall is within the safety limit. If the stress of the API standard 650 open-top tanks connecting piping is not handled properly, the wall of the API 650 petroleum storage tank may deform or even rupture, causing a major accident.
Welding inspection of bottom plate of API standard 650 open-top tanks, vertical oil tank: During the fabrication and installation of API standard 650 open-top tanks, the bottom edge plate is welded first. According to the requirements of the technical standard, penetrant inspection is required for the weld of edge plate at the bottom of API standard 650 open-top tanks, that is, penetrant testing is required for each weld bead priming, filling and capping. In the process of testing, if any defect is found, it shall be repaired immediately. After the repair, the surface coloring penetrant test shall be conducted again until the test result is qualified.
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 standard 650 open-top tanksASTM A53 Zinc-Coated Welded and Seamless Pipe
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