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# Steam Boiler Shells - Stress vs. Boiler Pressure

## Calculate the stress in steam boiler shells caused by steam pressure.

The stress in a steam boiler shell can be calculated as

σ = P D / 2 t                                    (1)

where

σ = hoop stress (Pa, N/m2)

P = boiler pressure (Pa, N/m2)

D = diameter of boiler shell (m)

t = thickness of boiler shell (m)

## Related Topics

• ### Pipe Sizing

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Radial and tangential stress in thick-walled cylinders or tubes with closed ends - with internal and external pressure.
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Stress is force per unit area - strain is the deformation of a solid due to stress.

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## Citation

• The Engineering ToolBox (2008). Steam Boiler Shells - Stress vs. Boiler Pressure. [online] Available at: https://www.engineeringtoolbox.com/steam-boiler-stress-d_1060.html [Accessed Day Month Year].

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12.8.9