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6061 aluminum shapes api 620 tank maintenance

6061 aluminum shapes api 620 tank maintenance

6061 aluminum shapes api 620 tank maintenance

If additional requirements are met, higher internal pressures are allowed. API 650 only covers tanks that support the whole bottom evenly and api 620 tank maintenance tanks in non-refrigerated service that have a maximum design temperature of 200 degrees F. It requires that you have a minimum material thickness of 3/16 inch.

The api 620 tank maintenance must go through strict inspection before putting into use. Inspection of plate groove of api 620 tank maintenance, vertical oil tank: After finishing the groove processing of oil tank plate, it is necessary to conduct dye penetrant inspection on the groove. This process is mainly aimed at the hard damage of groove in the machining process and the defects of the plate itself. If any defect is found, it shall be processed again until the defect disappears.

The thickness of the api 620 tank maintenance annular bottom plates shall be in accordance with Table Q-4 (for steel or aluminum, as applicable). The thicknesses shown are minimums. The ring of annual plates shall have a circular outside circumference, but it may have a regular polygonal shape inside the tank shell with the number of sides equal to the number of annular plates. These pieces shall be butt-welded in accordance with Q.7.1.1, Item b. The plates of the first shell course shall be attached to the annular bottom plates by a weld as required by API 620 oil tank 5.9.5 except when a full-penetration weld is used or required (see Q.7.1.1). Butt-welds in annular plates shall be not closer than 12 in. from any vertical weld.

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