Oil, Gas & Process Industries
Code-based FEA and CFD for pressure vessels, reactor internals, separators, piping and tubulars in upstream, refining, petrochemical and chemical plants.
Industry overview
Plants in oil, gas and process service run hot, under pressure and often in corrosive or erosive conditions. Most of the equipment is built to a design code, and the analysis has to satisfy the EPC or the owner's engineer before drawings get approved. Reactors, separators, vessels, nozzles and internal supports all go through this, and support or nozzle changes late in the design are very common.
Shirsh Technosolutions does design-by-analysis to ASME Section VIII Division 2 Part 5, with stresses linearised and classified the way reviewers expect to see them. Alongside that we run CFD on flow equipment and FEA on tubulars and connections under combined loads. We stay with the job through the reviewer's comment rounds until the design is accepted.
Industry challenges
Qualifying vessels and internals to ASME VIII Div 2 Part 5 when the reviewer wants every hotspot linearised and classified
High design temperatures that reduce allowable stress and change material properties
Corrosion and erosion allowances that leave thin walls and small attachments carrying the full load
Late changes to supports, nozzles and lugs that force re-analysis against a fixed schedule
How we help
- 1
Design-by-analysis to ASME VIII Div 2 Part 5 in ANSYS Mechanical, with Pm, PL and PL+Pb+Q checks on linearised stresses
- 2
Thermal-structural analysis using temperature-dependent properties from ASME Section II Part D
- 3
Upset and handling load cases such as catalyst-full emergency weight, external pressure and lifting lugs
- 4
CFD of reactors, separators and mixing equipment in ANSYS Fluent for flow distribution and pressure drop
- 5
FEA of tubulars and connections under combined loads, with von Mises (VME) utilisation checks
Key trends
Wider use of design-by-analysis to save wall thickness on large and high-alloy vessels
Fitness-for-service assessment to API 579-1/ASME FFS-1 for life extension of ageing plant
Hydrogen and low-carbon process units bringing new material and embrittlement questions
Modular and skid-mounted process units that need transport and lifting load checks
Want to learn this?
We also offer ANSYS & SolidWorks training courses.
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