Pressure vessel problems with the plumbing

Pressure vessel problems with the plumbing

   Butt joints of pressure vessels for all (100%) or partial (20%) non-destructive testing: When using ray detection, according to the quality of its transparency not less than Class AB, which qualified for the Ⅲ grade level, and there is no welding is not allowed through; when taken ultrasound, its qualified level Ⅱ.

    Of the GB150, GB151 and other standard provisions of all (100%) non-destructive testing pressure vessels, pressure vessels, the third category, the weld coefficient ⒈ 0 the pressure vessel and can not withstand internal and external inspection or testing of pressure vessels, the butt joint for all (100%) non-destructive testing: When using ray detection, according to the quality of its transparency not less than Class AB, the eligibility level for the grade Ⅱ; when using ultrasonic testing, its qualified level Ⅰ.

    Equal to the nominal diameter greater than 250mm (or nominal diameter less than 250mm. The people is greater than the wall 28mm) took over the butt joints of pressure vessel proportion of non-destructive testing and the passing level should be the main pressure vessel shell weld requirements are the same; nominal diameter of less than 250mm, wall thickness of 28mm or less done only when the surface of non-destructive testing, the quality level required for the JB4730 grade Ⅰ.

...
Sources from Pressure vessel problems with the plumbing

Keywords: reactor，pressure vessel，heat exchanger