Mininum Required Pipe Wall Thickness and Maximum Allowable Working Pressure (MAWP)

Title: Mininum Required Pipe Wall Thickness and Maximum Allowable Working Pressure (MAWP)

Contributor: Harlan Bengtson, Ph.D., P.E. , Former Dean of Engineering, Southern Illinois University Edwardsville

Published Date: 10/27/2017

Content Type: Spreadsheet

Description:

The required pipe wall thickness for given fluid pressure, pipe size and pipe properties is specified by ASME and API codes along with maximum allowable working pressure (MAWP) for given pipe size, wall thickness, and properties.

This spreadsheet has a worksheet that calculates the minumum required pipe wall thickness for user entered values of pipe O.D. (outside diameter), fluid pressure, pipe material, and configuration parameters: y (temperature coefficient), E (longitudinal quality factor), S (allowable unit stress), and A (end condition factor). Another worksheet calculates the MAWP for user-entered values of pipe O.D., pipe wall thickness, and the parameters: y, E, S, and A. Links are provided to AccessEngineering sources for obtaining y, E, S, and A values.

Equations used: required minimum pipe wall thickness, corrosion rate, remaining life of pipe, MAWP