CYLINDRICAL SHELL THICKNESS WITH BOM CALCULATION

Element Type
Cylinder Type mm
Size
Schedule
Element Diameter mm
Length
Internal Design Pr. kPa
Internal Design Temp °C
Corrosion Allowance mm
Joint Efficiency
MATERIAL Help
Cylinder
RESULT
Max Allow Stress =
Min Thickness =

An excellent web based tool for cylindrical shell thickness calculation under internal pressure. It also gives allowable Stress of material at a desired design temperature. This and many other tool for Pressure Vessel design as per ASME Section VIII Div. 1 would be useful for Static Equipment Engineer.

Cylinder thickness calculation is based on para UG-27 of ASME Section VIII Division 1 2011 edition code book.

Where in cylinder thickness due to circumferential stress is given by:

t = P * R/(2SE – 0.6P)

where,
t = Cylinder thickness in corroded condition
P = Design pressure
R = Cylinder Inside radius in corroded condition
S = Maximum Allowable Stress at design temperature
E= Joint Efficiency

This tool also calculate cylinder thickness on OD basis as per Appendix 1-1 of ASME Section VIII Div. 1, which is

t = P * Ro/(SE + 0.4P)

where,
Ro = Cylinder outside diameter
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