5254 aluminum tube API 650 aboveground oil storage tanks
Lateral braces between outer bay rafters must be provided if asymmetrical structural shapes are used for rafters and if the API 650 aboveground oil storage tanks API 650 tanks are located in areas subject to earthquakes. The bracing must be adequately sized for the seismic zone specified.
The preparatory work before the construction of the API 650 aboveground oil storage tanks is an important part of the oil tank project. Material purchase preparation before the construction of the API 650 aboveground oil storage tanks:Before API 650 aboveground oil storage tanks construction, all materials shall be purchased and prepared, and the specifications and quality of materials shall be inspected to see if they meet the construction operation requirements. Fire and rain proof measures should be taken when storing materials. Paint should be stored in a ventilated and dry place.
All API 650 aboveground oil storage tanks fillet welds shall consist of a minimum of two passes. The ends of the fillet welds shall be 2 in. from the rat hole, and these welds shall be deposited by starting 2 in. from the rat hole and welding away from the rat hole. An acceptable alternative to stopping fillet welds 2 in. short of the rat hole would be to weld continuously through the rat hole from one side of the stiffener to the opposite side. All craters in fillet welds shall be repaired by back welding.
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