API 650 mechanically-anchored tanks mechanically-anchored
This specification, in conjunction with API 650 Standard, prescribes minimum standards for the API 650 mechanically-anchored tanks design, supply, fabrication, erection, and testing of field erected welded steel storage tanks complete with accessories as specified herein and as shown on attached Datasheets and/or Drawings.
Combination of Design LoadsThe inner tank API 650 mechanically-anchored tanks shall be designed for the most critical combinations of loading that result from internal pressure and liquid head, the static insulation pressure, the insulation pressure as the inner tank expands after an in-service period, and the purging or operating pressure of the space between the inner and outer tank shells, unless the pressure is equalized on both sides of the inner tank.
The API 650 mechanically-anchored tanks must go through strict inspection before putting into use. Inspection of plate groove of API 650 mechanically-anchored tanks, vertical oil tank: After finishing the groove processing of oil tank plate, it is necessary to conduct dye penetrant inspection on the groove. This process is mainly aimed at the hard damage of groove in the machining process and the defects of the plate itself. If any defect is found, it shall be processed again until the defect disappears.
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