Alclad 6061 aluminum plate API Std 650 cylindrical welded storage tanks
The vent pipe mouth should be 4m or more above the ground. The nominal diameter of the API Std 650 cylindrical welded storage tanks API 650 petroleum storage tank vent pipe should be no less than 50mm and a flame arrestor should be installed.
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Impact Tests for High AlloysImpact tests are not required for the high-alloy (austenitic stainless steel) API Std 650 cylindrical welded storage tanks base materials, nickel alloy based materials, aluminum base materials, and weld deposited for the nonferrous (aluminum) materials. Impact tests are not required for austenitic stainless steel welds deposited by all the welding processes for services of –200°F and above. Austenitic stainless steel welds deposited for service below –200°F by all welding processes shall be impact tested in accordance with Q.6.2 except that the required impact values shall be 75% of the values as given in Q.2.2.2, Item c.