API standard 650 partially anchored liquid-storage tanks centerline-stacked
For the welding of API standard 650 partially anchored liquid-storage tanks bottom, attention should be paid to the slag removal and drying of the welding joint before welding, and there is no sediment and oil contamination in the lap joint of steel plate. The manufacturing quality and production efficiency of the central plate can be obviously improved by adopting the rolling central plate. The butt joint is used between the rolling plates to improve the installation conditions of the central plate at the bottom of the API standard 650 partially anchored liquid-storage tanks. The welding sequence of the central plate is from the center of the central plate to the surrounding.
The opening pressure or vacuum of the pressure relief and API standard 650 partially anchored liquid-storage tanks vacuum relief valves shall be checked by pumping air above the water level and releasing the pressure and then partially withdrawing water from the tank. After the tank has been emptied of water and is at atmospheric pressure, the anchorage, if provided, shall be rechecked for tightness against the hold-down brackets. Air pressure, equal to the design pressure, shall be applied to the empty tank, and the anchorage, if provided, and the foundation shall be checked for uplift.
Welding certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For both API standard 650 partially anchored liquid-storage tanks storage tank API 650, non-destructive inspection is required, but third-party inspection is not required.
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