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Chemical engineering other topics FAQ

Vessel Design

What is design pressure and MAWP ? by Samiran
Posted: 3 Oct 01

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.

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