Engineering Specialties Used:
Finite Element Analysis
Inelastic Buckling Analysis
A facility planned significant welding work on several
sections of a 100 foot tall vertical pressure vessel shell.
This welding work would require a hydro-test of the tower
after the field work was completed. Filling the vessel with
water for the hydro-test produces significant live loads
which are not normally experienced by the vessel support
structure and which were not part of the original design.
Buckling of the skirt was a risk. Buckling is a non-ductile
phenomenon; once it started, the vessel skirt would
collapse. Several large openings in the skirt compounded
Finite Element Model of a
Pressure Vessel Skirt
upon these findings, the client continued with the
planned plant turnaround with confidence. Risks were
reduced since the pressure vessel did not need to be
moved. Also, because the pressure vessel could be
hydro-tested in place, the turnaround schedule was
minimized. Argos Engineers is ready to partner with your
turnaround team to analyze critical equipment. We can
perform the detailed analysis needed to evaluate risk
and to ensure there is a sufficient margin for safety.