Advanced comparison of Phast, KFX and EXSIM

Product overview

Phast
KFX
EXSIM
Phast
Discharge, dispersion, fire and explosion modelling
KFX

Advanced dispersion and fire modelling involving 3D geometries and terrains

EXSIM
Advanced explosion modelling involving 3D geometries and terrains

Consequence analysis method

Phast
KFX
EXSIM
Phast
Free-field emprical and phenomenological models
KFX
Computational Fluid Dynamics (CFD)
EXSIM
Computational Fluid Dynamics (CFD)

Great for

Phast
KFX
EXSIM
Phast
  • Accident and incident investigation
  • ALARP demonstration
  • Consequence estimation for HAZOP, HAZID, PHA, LOPA
  • Consequence input to your own QRA tool
  • Emergency response planning
  • Equipment design
  • Escalation assessment
  • Extent and severity assessment
  • Facility siting and layout optimisation
  • Hazardous area classification
  • Regulatory obligations (e.g. safety reports)
  • Vent and flare design
  • Other general consequence estimation
KFX
  • Advanced facility siting and layout optimisation
  • ALARP demonstration
  • Detailed design of fire mitigation measures
  • Detailed understanding of dispersion and fires where geometries and terrains play an important role
  • Impact assessment for firewalls, water mists, water curtains, deluge, monitors and sprinklers
  • Optimisation of passive fire protection (PFP)
  • Smoke analysis
EXSIM
  • Advanced facility siting and layout optimisation
  • ALARP demonstration
  • Detailed understanding of explosions where geometries and terrains play an important role 
  • Detailed design of explosion mitigation measures
  • Impact assessment for blast walls and explosion relief panels

What you get

Phast
KFX
EXSIM
Phast
  • 40+ scenario types
  • Constant and time-varying discharge models, including effects of isolation and blowdown
  • Weather definition (wind speed, atmospheric and substrate conditions)
  • 2000+ materials from the DIPPR database
  • User-specified materials
  • Excel import for efficient study creation
  • Map / plot plan import
  • GIS coordinate systems
  • Buildings for wake model or in-building releases
  • Congested regions on the map for explosion modelling*
  • Results in the form of dispersion concentrations, flame length, pool diameter, thermal radiations, flash fire, explosion overpressure and impulse, and toxic probit, dose and lethality
  • Results presented in reports, 2D graphs, a 3D viewer, on maps or plot plans, and in tabular format

    * Available with Phast 3D extension only
KFX
  • Gas release model with or without ignition 
  • Liquid pool spread model including calculation of evaporation rate
  • Spray model for liquid and two-phase releases
  • User-specified ignition point
  • Spray model for modelling of fire mitigation by the use of water systems such as sprinklers and deluge
  • Import of 3D geometry models and terrain models from common CAD formats
  • Results presented together with the 3D geometry model
  • High resolution heat load footprints on objects and structures
  • Realistic visualisation of fires and gas clouds in a 3D viewer
  • Calculation of equivalent stoichiometric gas cloud size as input  to CFD explosion simulations
EXSIM
  • Efficient case generation and simulations
  • Uses the same 3D geometry format as KFX
  • Results presented together with the 3D geometry model
  • Overpressure vs time at specified locations
  • Average blast loads to walls and objects
  • High resolution footprints of overpressure and drag forces on objects and structures

Extensions available

Phast
KFX
EXSIM
Phast
  • Phast 3D
  • Phast Multi-Component
  • Phast CFD - pool fire
  • Phast CFD - jet fire (coming soon)
KFX
  • FAHTS for export of heat loads to USFOS for structural response calculations and optimised design of passive fire protection
EXSIM

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