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ARC has experience of modelling most major accident consequences including fires, explosions, toxic gas releases and hazardous spills. A wide range of software modelling tools are used to assess the effects of such hazards on people (on- and off-site), the asset and the environment.
Fire Consequence Modelling
ARC has performed numerous studies into the effects of fires at hazardous installations using DNV’’s PHAST and Shell’s FRED programs:
Jet fires, flash fires, spray fires and BLEVEs can be modelled to calculate flame temperature and heat flux in the vicinity of the flame. The consequences to persons, structures or equipment can be estimated using this information.
Pool fires can be modelled using a number of techniques and the heat fluxes around the fire calculated.
Gas Dispersion Studies
ARC has the capability to model gas dispersion in confined and unconfined scenarios using the FLUENT CFD code. Typical applications include:
Exhaust plume dispersion.
Natural and forced ventilation efficiency.
Flare combustion. Evaluation of incident radiation and harmful gas concentrations.
Gas venting. Flammable and toxic gas envelope prediction.
Helideck wind environment.
Steady state and transient dispersion of toxic and flammable gas leaks.
Pool and jet fires arising from the ignition of a flammable gas.
Explosion Studies
Simulations of explosions can be executed using the AutoReaGas CFD Code, for a variety of structures including offshore platforms, FPSOs, and onshore process plants, Flammable gas cloud ignition, deflagration and blast generation.
Probability of exceedance curves can be provided as well as overpressure time histories.
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