This software helps to determine the minimum required wall thickness of cylindrical shells under internal pressure.
The software is based on requirements of ASME Sec. VIII div. 1 Boiler and Pressure Vessel Code -2021 Edition and ASME Sec II Part D code.
Some materials are listed in the pipe material section of the program. The program determines stress values for the selected material according to the design temperature in the stress tables. Values for intermediate temperatures are found by linear interpolation.
These allowable stress values are based on the ASME Boiler and Pressure Vessel Code, Section II, Part D. Check selected stress values with the current ASME Sec II Part D code.
If the desired material is not listed in the material section, the user should select the option ‘Others’ in this section and select Pipe type and Allowable stress at design temperature, ksi. in the bottom section.
It is the user responsibility to choose the design temperature, design pressure, corrosion allowance, minimum thickness of pressure retaining components, and in the case of ‘Others’ the allowable stress at design temperature (the program will ignore the design temperature previously entered in the upper portion of the program in this case).
The formulae in ASME Section VIII, Division 1, paragraph UG-27 and mandatory appendix 1, are used for calculating the wall thickness of shell under internal pressure.
Weld joint type and extend of radiographic or ultrasonic examination shall be determined by the user according to the process, service restrictions and other ASME Sec. VIII div.1 requirements.
When choosing ERW, Seamless or Welded pipes, the user should enter industry available outside diameter and wall thickness of the pipe information.