Smart Simulation & Sizing Tools for Every Piping and Equipment Engineer/Designer



PASS/EQUIP provides pressure vessel strength and stability analysis for horizontal and vertical vessels, columns, storage tanks, as well as shell, tube, and air cooled heat exchangers under static and seismic loads in order to evaluate bearing strength in operation, test, and assembly states. Applications include designing, revamping and testing of vessels, as well as making compliance calculations for power, oil-refining, chemical, petrochemical, natural gas, petroleum, and other related industries.

PASS/EQUIP also provides finite element analysis of arbitrary vessel nozzles for the purpose of estimating their stress, stiffness and allowable loads. The results can be automatically transferred to PASS/START-PROF to be used for piping stress analysis.

PASS/EQUIP combines sophisticated calculation capabilities and code compliance with ease-of-use to deliver simulation of pressure vessels for strength and stability by “regular” engineers and designers. Detailed calculation reports, produced by the program, contain comprehensive information (including all equations, intermediate results, and plot of forces and moments) and are ready to be delivered to any authorities or equipment certification body.

New employees can begin performing pressure vessel analysis in days rather than months!

Equipment designers and process and piping engineers of more than 500 EPC and vessel manufacturing companies in Belarus, China, Czech Republic, Germany, India, Italy, Japan, Kazakhstan, Russia, South Korea, Ukraine and United States of America now use the software every day for design of different types of vessels, columns, tanks, heat exchangers, and nozzles..

Due to the large number of users and feedback from specialists in different branches of industry PASS/EQUIP continues to steadily evolve to meet modern demands. PASS/EQUIP is constantly verified and cross-test with similar programs.

Perform calculations in PASS/ EQUIP provides several benefits including: increased reliability and operational safety of equipment for various applications, improved the coordination of the project with regulatory authorities, and reduced costs and time.

PASS/EQUIP has a modern intuitive user interface, documentation and help system and our specialists provide application and technical support.

PASS/EQUIP provides the ultimate in usability by “regular” engineers allowing them to focus on equipment design. The user defines the equipment type, geometrical adjectives, material of the vessel components, type and allocation of supports, test type, and loading rates. Selection of vessel elements and materials is made from the vast databases, which can be updated by the user.

3D graphic display of equipment geometry is provided with the possibility of editing the color of separate elements or the whole model, with views to make it possible to see internal elements. Powerful 3D modeling opportunities also support export to various CAD formats, so the user could continue work on vessel design in his favorite CAD environment.

PASS/EQUIP does not require special training and can be used by any mechanical engineer.

Powerful capabilities

PASS/EQUIP provides comprehensive structural pressure vessels analysis.

PASS/EQUIP performs strength and stability calculation of horizontal, vertical, and column vessels, and takes into account wind and seismic loads. PASS/ EQUIP also calculates the strength and stability of shell and tube heat exchangers, including tubesheets, tubes, pass partitions, shells, expansion bellows, expansion boxes, and floating heads. The smart tube grid editor of heat exchanger provides very powerful opportunities of modeling non-standard tubesheets.

The program performs a calculation of strength and stability of horizontal and vertical pressure vessels for international codes. This calculation is based on GOST Standards, OST Standards, ASME Standards and European Standards.

PASS/EQUIP Nozzle-FEM provides analysis of nozzle-to-shell junctions using the Finite Element Method (FEM) including calculation of allowable nozzle loads and estimated nozzle junction strength for a wide range of geometric configurations and operating conditions. This includes arbitrary nozzle geometry connected to cylindrical and conical shells, as well as elliptic, hemispherical and flat heads and performs nozzle-shell junction flexibility calculations. The software automatically creates a finite mesh and performs stress analysis for nozzles (including trunnions) including shell membrane stress, bending stress, and total stress. Detailed nozzle analysis is recommended for the design and industrial safety review of oil and gas, refining, petrochemical, chemical, power plants and other industrial facilities.

Calculation of strength and stability of column type vessels, with wind loads and seismic effects is carried out using the PASS/EQUIP Columns module, based on GOST 34233.9, GOST 34283.

Calculation for strength and stability of shell, tube type and air cooled heat exchangers, is carried out by using the PASS/EQUIP-Vessel&Exchanger module based on GOST 34233.7, GOST 26-14-88, RD 30780-2002, and ASME VIII div. 1. The smart tube grid editor of PASS/EQUIP-Vessel&Exchanger provides very powerful modeling of non-standard tubesheets.

The calculation of the strength and stability of horizontal and vertical vessels, with loads from seismic effects is supported on the basis of STO-SA-03.003-2009, AzDYN 2/3-1, GOST R 55722 and GOST 34283.

Calculation of vertical steel cylindrical tanks is carried out using the PASS/EQUIP Tanks option on the basis of STO-SA-03-002-2011.

System Requirements

Windows 7/8/10+
x86-64 architecture processor
1GB of RAM
Video card with OpenGL 2.0+ support and 1GB+ of RAM
Display resolution at least 1024x768, recommended 1280x1024


Calculation codes

  • ASME VIII, div.1;
  • EN 13445-3;
  • GOST 34233.(1-12)-2017, GOST 34283-2017;
  • GOST 14249-89, GOST 25221-82, GOST 26202-84, GOST 24755-89 etc;
  • RD 26-15-88, RTM 26-01-96-77, RD 10-249-98, OST 26-01-64-83 etc.


In order not to enter the necessary settings manually, there are a number of embedded databases:

Contain the physical materials properties from the most popular codes.

  • ASME II Part D;
  • EN Standards;
  • GOST 34233.1—2017;
  • JB 4732-1995, GB 713-2008 etc;
  • User Materials.

To specify the sizes of fittings and pipe fittings side of standard sheets and pipes on the basis of ASME, EN, Russian codes with automatic definition negative tolerance.

Contains the dimensions of the standard profiles of product standards.

Contains all the necessary dimensions and specifications of flanges, bolts (studs) and gaskets for ASME, EN, Russian codes.

Database for horizontal (saddle support), vertical (brackets, legs, lugs, rings) and column type (skirts) vessels.


PASS/EQUIP can be delivered in different configurations:


PASS/EQUIP FEM provides stress analysis for vessels, columns, heat exchangers, tanks, and nozzles.


PASS/EQUIP Tank provides stress analysis for vessels, tanks, and nozzles.

PASS/EQUIP Vessel&Exchanger

PASS/EQUIP Vessl&Exchanger provides stress analysis for vessels, heat exchangers, and nozzles.


PASS/EQUIP Vessel provides stress analysis for vessels and nozzles.

Download Software

SoftwareLinkUpload Date
PASS/EQUIP (Russian and English)
Dongle Update (KeySt) zip, 4.31 MiB 16.04.2019
Dongle Drivers (SafeNet Sentinel 7.6.9) exe, 7.37 MiB 13.09.2017