Quality inspection of API standard 650 larger diameter tanks

API 650 Tanks in which liquid fluids are stored and designed to withstand atmospheric pressure operation, less than 18 kPa, or internal pressures not exceeding the weight of the API standard 650 larger diameter tanks roof, with temperatures no higher than 93, 3 C are included in the scope of this design code.

API standard 650 larger diameter tanks weld tightness test: remove dirt from the API standard 650 larger diameter tanks weld, apply white powder emulsion, spray kerosene on the other side of the weld after drying. Because of the strong penetration of kerosene, if kerosene is sprayed after 12 hours (under low temperature conditions, the time can be extended), if the surface of the welded seam coated with white emulsion has no spots, the welded seam meets the requirements.

Protection of Plates during Shipping and Storage
Plates shall be adequately protected during shipping and storage to avoid damage to API standard 650 larger diameter tanks material plate surfaces and edges from handling (scratches, gouge marks, etc.) and from environmental conditions (corrosion, pitting, etc.).
Plates shall be protected from moisture or stored in inclined position to prevent water from collecting and standing on surface.

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