Pressure vessel & heat exchanger design
Mechanical design calculations for shells, heads, nozzles, flanges and supports.
- Wall thickness, reinforcement and MAWP
- Nozzle loads and local stress checks
- Saddle, leg and lifting lug design
● Paraxis Global · Engineering services
Design calculations, 3D models, FEA and STAAD.Pro structural analysis for pressure equipment, process skids and supporting structures, built to the code your project names, plus Chartered Engineer certification.
● Capabilities
Each package is checked against the design code and the compliance route it must pass, so drawings and calculations do not come back from the inspector.
Mechanical design calculations for shells, heads, nozzles, flanges and supports.
Models and drawing sets that fabricators can build from and inspectors can check.
Design-by-analysis where rules-based formulas run out, with stress linearisation and code assessment.
Analysis and design of steel structures that carry and access process equipment.
Independent certificates and reports signed by a Chartered Engineer, for customs, government schemes, banks and insurers.
● Shell estimator
An indicative calculation for a cylindrical shell under internal pressure, using the ASME Section VIII Division 1 UG-27 formulas. Change any value to see the result update.
Minimum required thickness incl. corrosion allowance
Indicative only, not for construction. Ambient allowable stresses shown; actual values depend on design temperature, code edition and material certificate. Excludes heads, nozzles, external loads and mill tolerance.
● Process
Datasheets, process conditions, codes, site data and any existing drawings.
A short memo fixing codes, loads, materials and acceptance criteria before work starts.
Hand calculations, 3D models, FEA and STAAD.Pro models as needed.
Drawing set and calculation reports, cross-checked against the code clauses.
Comments closed with you, the fabricator and the inspection body, then native files handed over.
● What you receive
● Engineering + compliance
The same team that designs your equipment knows what the notified body, the boiler inspector or the food-contact assessor will ask for. Calculations, drawings and the technical file are prepared together, so there is one set of numbers and no rework between engineering and compliance.
See compliance servicesInclude the design code, conditions and deadline, and we will reply with scope, schedule and price.