API 650 aboveground welded storage tanks requirement
Inspection of low-pressure storage tank Butt-weldsComplete penetration and complete fusion is required (to the degree mandated by the acceptance criteria for examination method utilized) for welds joining tank wall plates to API 650 aboveground welded storage tanks tank wall plates. Examination for quality of welds shall be made using either the radiographic method specified in API 620 standard 7.15.1 and applied in 7.17, or alternatively, by agreement between the Purchaser and the Manufacturer, using the ultrasonic method specified in 7.15.3.1. In addition to the radiographic or ultrasonic examination, these welds shall also be visually examined as specified in 7.15.5. Furthermore, the Purchaser’s inspector may visually inspect all butt-welds for cracks, arc strikes, excessive undercuts, surface porosity, incomplete fusion, and other defects.
Welding certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For both API 650 aboveground welded storage tanks storage tank API 650, non-destructive inspection is required, but third-party inspection is not required.
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}After using for a certain period of time, it is necessary to check the corrosion protection of the metal oil tank and paint the outer wall of the API 650 aboveground welded storage tanks with anti-corrosion paint. The inlet and outlet valves of API 650 aboveground welded storage tanks shall be inspected and maintained regularly to ensure they are in good condition. Oil tank will produce a lot of dirt when it is stored for a long time. Usually, the cleaning cycle of metal oil tank is about three to five years.
Our company will accept the product quality objection registration record, pass it to the API 650 aboveground welded storage tanks production unit and relevant departments, and timely coordinate the supervision of product API 650 aboveground welded storage tanks quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.
