API Std 650 aluminum storage tanks isolation valves

API 650 vertical tanks meet American Petroleum Industries (API) standards in design, material, fabrication, and testing of aboveground welded steel API Std 650 aluminum storage tanksstorage tanks for use in industrial applications.

The water dissolved in the oil will be separated out from the oil stored in the API Std 650 aluminum storage tanks for a long time, and the acidic water layer will appear at the bottom of the API Std 650 aluminum storage tanks for a long time, which will accelerate the corrosion of the API Std 650 aluminum storage tanks and cause the wall thinning and even leakage. With the increase of service life, the API Std 650 aluminum storage tanks must be inspected and cleaned regularly to check the hidden danger.

Impact Test Requirements for Oil Storage Tanks Primary Components
All API Std 650 aluminum storage tanks primary components of 9% or 5% nickel steel shall be impact tested in accordance with Q.2.2.2 through Q.2.2.4. Impact testing is not required for primary components of austenitic stainless steel, nickel alloy, and aluminum materials. Welds in high-alloy (austenitic) stainless steel shall be impact tested if required by Q.6.3.
Impact testing of plates, including structural members made of plate, shall comply with the following:a)Impact test specimens shall be taken transverse to the direction of final plate rolling. b)Charpy V-notch specimens shall be cooled to a temperature of –320°F for A353, A553, and A645 steels for impact testing.

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