Max allowable working pressure is always equal to or higher than the design pressure.The design pressure is normally the PRV set pressure of a vessel.This pressure is used to determine the minimum wall thickness. Say a calculated thickness is 9.2 mm based on a des press. However, a standard material may have athickness of 10 mm. If the press is now back calculated based on this thickness this will be the MAWP.
Since the later 1980s, manufacturing companies have seen over 3 percent in labor output year on year, with most of this productivty enhancement occuring because of the optimization of repetitive tasks. Download Now