PSE’s experienced specialists have a proven track record in over 200 safety projects since 2012, using the company’s inhouse gFLARE technology that has become the gold standard for a number of Operators.

The release of gFLARE software now places PSE’s leading safety technology at the forefront of tools available to Designers and Operators worldwide.

gFLARE provides a comprehensive set of features for depressuring, relief and flare system design.

gFLARE unlocks significant CAPEX and OPEX reductions when analysing transient relief event loads, removing the uncertainty and over-conservatism associated with steady-state methods.

Early integration, improves design workflow efficiency and integrity of safety data – all within a single software environment.

gFLARE at-a-glance

gFLARE satisfies the growing market demand for consolidated tools modelling both steady state and dynamic relief and flare events.

For example, initial flare sizing and configuration can be modelled using steady state loads prior to integrating the transient depressuring analysis which allows engineers to easily confirm where low temperature materials are required and mitigate fire stress risk as well as dynamically optimizing the flare capacity, headers and equipment size for a more realistic global scenario load.

Overpressure protection – the old vs the new

The following brief comparison illustrates the difference between conventional and gFLARE approaches for depressuring design:

Conventional approach

The conventional approach uses low-fidelity ‘lumped’ models which lose flowsheet detail

  • Gas/liquid phases are assumed to be in equilibrium -they are rarely in practice
  • Models are unable to accurately track separate phase temperatures
  • They are unable to reproduce experimental data

Typical results are shown in the plots below:

gPROMS Flare - Vessel Temperature

State-of-the-art gFLARE approach

gFLARE’s non-equilibrium rate based approach treats each fluid phase interaction separately wherever it exists in the system. Because of the distributed flowsheet approach, accurate minimum metal temperature tracking is possible gFLARE models reproduce experimental data accurately.

The difference can be seen in the plot below:


gPROMS Flare - Low Temperature


gFLARE can be supplied as a stand-alone package, or the Process Safety libraries can be added as optional extras to an existing gPROCESS licence which unlocks the full range of connectivity between process unit models and a flare and relief system model.