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The Pressure Vessels module is the foundational entry point for all support calculations in PSI. Before designing or analyzing a support, you define the vessel itself — its geometry, material, and the fluid it contains. These parameters propagate through every downstream calculation.
The Vessels page (/recipientes-analisis) is currently under construction. A countdown timer is displayed while the feature is being finalized. Subscribe with your email on the page to receive launch notifications.

Vessel Types

PSI supports three vessel configurations. The vessel type determines which geometry inputs are shown and how loads are calculated.

Horizontal

A cylindrical vessel oriented along a horizontal axis. Requires outer diameter and length. Typically supported on saddles.

Columna Vertical

A vertical cylindrical column. Requires outer diameter and height. Typically supported on a skirt or legs.

Esférico

A spherical vessel. Only requires outer diameter — the length/height field is hidden because the geometry is fully defined by the diameter alone.

Geometry Inputs

The geometry panel collects all dimensional and fluid properties needed to compute vessel weight, projected wind area, and seismic mass.
FieldDescriptionUnit (SI / US)
Diámetro exteriorOuter diameter of the vessel shellmm / in
Longitud / AlturaShell length (horizontal) or height (vertical column)mm / in
Material del recipienteVessel shell material — drives density and allowable stress
Espesor de paredNominal shell wall thicknessmm / in
Espesor de aislamientoInsulation layer thickness added to the outer profilemm / in
Nivel líquido (%)Fill level of the contained fluid, from 0 % (empty) to 100 % (full)%
Gravedad específica del fluidoSpecific gravity of the process fluid relative to water
The unit system (SI or US Customary) is selected globally. All geometry labels automatically switch between mm and in depending on the active unit system.

Material Options

The following vessel shell materials are available in the geometry panel:
  • Carbon steel — general-purpose, highest density, widest temperature range
  • Stainless steel 304 — austenitic, good corrosion resistance
  • Stainless steel 316 — austenitic with molybdenum, enhanced pitting resistance
  • Alloy steel — higher strength grades for elevated temperature or pressure service
Material selection affects vessel self-weight, which feeds directly into support load calculations.

How Vessel Data Flows

Vessel parameters are the input foundation for the entire PSI calculation chain. The geometry and weight values feed downstream into each of the pressure element and structural element modules:
  1. Support Design (/soporte-diseno) — vessel geometry and weight drive the Geometry & Weight card inputs.
  2. Support Analysis (/soporte-analisis) — operating weight and dimensions inform the analytics metrics and charts.
  3. Weld Design (/soldadura-diseno) — vessel outer diameter and wall thickness inform attachment weld sizing.
The Vessels page (/recipientes-analisis) where vessel definitions will be managed is currently under construction. In the interim, vessel geometry is entered directly in the support design input components (GeometryCard).

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