ASTM A27 external floating roofs API 650 insulated tanks

When the anchorage is designed to meet the requirements of API Standard 620 tank Q.3.6.4.2, the foundation should be designed to resist the uplift that results from three times the design pressure with the tank full to the design liquid level. When designing to any of the conditions in this paragraph, it is permissible to utilize friction between the soil and the vertical face of the ringwall and all of the effective liquid weight.

Welding certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For both API 650 insulated tanks storage tank API 650, non-destructive inspection is required, but third-party inspection is not required.

Ultrasonic testing can find the internal defects of API 650 insulated tanks welding joint, this detection method is very accurate for the internal layer defects of oil tank, but ultrasonic detection is not suitable for the detection of thin-walled storage tank materials. Dye penetrant testing is only suitable for detecting the defects of the surface opening of API 650 insulated tanks and so on metal oil tanks. The feature of this method is convenient and fast.