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Related Experiment Videos

Flixborough revisited - an explosion simulation approach.

S Høiset1, B H Hjertager, T Solberg

  • 1Norsk Hydro, Research Centre, N-3901, Porsgrunn, Norway.

Journal of Hazardous Materials
|August 18, 2000
PubMed
Summary

Comparing explosion reports from the Flixborough accident, this study found calculation-based estimates align with simulations. Visual inspection estimates were significantly lower than simulated explosion magnitudes.

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Area of Science:

  • Chemical Engineering
  • Accident Analysis
  • Computational Fluid Dynamics

Background:

  • The Flixborough disaster remains a critical case study in industrial accident analysis.
  • Accurate explosion magnitude estimation is vital for process safety and risk assessment.
  • Previous literature reviews of the Flixborough accident have offered varied explosion magnitude estimates.

Purpose of the Study:

  • To compare literature-based explosion estimations for the Flixborough accident with results from advanced computer simulations.
  • To evaluate the reliability of different estimation methods used in accident analysis.
  • To identify factors influencing explosion magnitude predictions.

Main Methods:

  • A literature review of explosion estimation reports concerning the Flixborough accident.

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  • Development and utilization of a computer model of the Flixborough plant.
  • Execution of explosion simulations using the EXSIM software tool.
  • Comparative analysis of literature estimates (visual inspection and calculations) against simulation outcomes.

    • Main Results:

    • Explosion magnitude estimates based on visual inspection from the literature were substantially lower than simulation results.
    • Explosion magnitude estimates derived from calculations showed good agreement with simulation results.
    • Simulation results indicated that the precise location of the ignition source had minimal impact on the overall explosion magnitude.

    Conclusions:

    • Calculation-based explosion estimations are more reliable than visual inspection methods for events like Flixborough.
    • Computational modeling, using tools like EXSIM, provides a robust approach to understanding industrial explosion dynamics.
    • Ignition source location may not be a critical parameter for determining explosion severity in certain scenarios.