API Std 650 flat-bottom tanks toughness procedure of plates
Welding certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For both API Std 650 flat-bottom tanks storage tank API 650, non-destructive inspection is required, but third-party inspection is not required.
Oil storage tank is an important equipment commonly used in petroleum and petrochemical industry. New API Std 650 flat-bottom tanks, metal storage tank must be tested before it can be put into use or put into storage. The common inspection methods of API Std 650 flat-bottom tanks include radiographic testing, ultrasonic testing, magnetic particle testing and dye penetrant testing. The parts and operation requirements of these testing methods are different, so they should be selected according to the required characteristics.
Surface Inspection of low-pressure storage tank Component PartsBefore assembly, unless already so certified by shop inspectors, all sidewall plates or sections and roof and bottom plates shall be inspected for thickness, freedom from injurious defects, and soundness of any welded joints.Check of Dimensions of API Std 650 flat-bottom tanks Component PartsAll formed plates and curved sections shall be checked for conformance with the planned dimensions and cross section. For unusual repairs the inspector should keep a record of measurements taken at sufficient intervals to constitute a satisfactory record.Check of Chemical and Physical Property DataThe inspector shall check the material being assembled by the lists of the plates from the mill, their heat numbers, chemical analyses, and mechanical properties as given on mill reports and shall see that copies are available to be attached to the Manufacturer’s report.
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