Quickly Size Pressure Vessel Components

Save Time With Design Mode

The COMPRESS Design Mode feature saves time by eliminating the manual iterations that would otherwise be required when designing pressure vessel components like shells, nozzles and vacuum rings. Design Mode takes your input data and selects component sizes, thicknesses and ratings based on ASME Code requirements. It is usually used when designing new equipment as it is typically more efficient than Rating (Analysis) Mode. For post construction calculations on existing equipment, COMPRESS also features a Rating Mode. You can switch between Design and Rating Modes in COMPRESS at any time.

Consider what adding or changing the liquid level does to a pressure vessel’s design. It alters the supported weight, changes the static head acting on components below the liquid level and affects the equipment’s natural frequency i.e. how it responds to seismic and wind loads. Design Mode tracks these interactions automatically and enforces ASME Code compliance.

In Design Mode component required and nominal thicknesses are re-evaluated during the modeling process and updated as necessary to reflect all ASME Code dependencies. This is done because most components including heads, shells, nozzles, vacuum stiffeners and supports are dependent on each other and generally cannot be sized in isolation.
Interactive guidance is provided while creating or editing pressure vessel components.
The minimum design metal temperature (MDMT) is determined per the rules of UCS-66 or UHA-51.
Warnings and good engineering practice reminders are presented as appropriate.