API 650 unanchored flat-bottom tank structural shapes

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

Strictly controlling the temperature in the API 650 unanchored flat-bottom tank can effectively reduce the volatile consumption of oil in large oil storage tanks. Because the higher the temperature in the oil storage tank, the stronger the activity of oil molecules and the greater the volatilization consumption of the oil. Therefore, the temperature in the API 650 unanchored flat-bottom tank must be reduced as much as possible. It is possible to reduce the direct sunlight temperature by painting white anticorrosive paint with good light reflectivity. It is also possible to use spray equipment to wash the top and wall of the API 650 unanchored flat-bottom tank with water flow to reduce the volatilization consumption of the oil in the storage tank.

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Data Required from Manufacturer on Completed TanksIf specified in the purchase order, the Manufacturer shall supply marked copies of plans (or a separate sketch) showing the location of all plates, with a means of identifying each plate with the heat numbers. These markings shall be checked by the inspector. A copy shall be attached to the Manufacturer’s report.Check of Stress-relieving OperationThe API 650 unanchored flat-bottom tank inspector shall check any thermal stress-relieving operation and shall be satisfied that the temperature readings are accurate and that the procedure conforms to the applicable requirements of these rules.