We performed structural and fatigue analysis on vessels used to produce hydrogen. The client was a manufacturer of systems which filter a mixed inlet gas stream that imposes an extremely high number of pressure cycles on its vessels. We were asked to develop simple methods for determining stresses in the heads, nozzles, support features and other structures. These stresses were found as functions of various dimensional relationships and of the stress in the cylindrical shell. From this information, it was feasible to determine the design life of the filter vessels without extensive detailed analysis of each vessel.


We perform thermal, stress, vibration and fatigue analysis on equipment including vessels, piping and heat exchangers.

Give us a call to talk about your engineering needs.

Related Projects

Failure Analysis on Cracks found in Pressure Swing Absorber Vessels
Design and Analysis of Large Scale Pressure Vessels under High Energy Impact
Fatigue Analysis on Threads of Base-Ported Pressure Filter

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Tom O’Donnell, PE
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Publications – Heat Exchangers, Pressure Vessels, Weld Applications, Fatigue, Elevated Temperature

(412) 835-5007

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