Calculate the blast overpressure created by vapor cloud explosions with the U.S. Army and HSE TNT Equivalency, TNO Multi-Energy, and Baker-Strehlow-Tang (B-S-T) models.  Scenario parameters can be incorporated into these models including proximity to ground level (ground reflection), density of obstacles, and vapor cloud flame speed.  Incident Analyst's explosion models make the conservative assumption of not modeling shielding from any specific structures.  For more advanced explosion modeling capability, including shielding and calculation of damage to structures and people, BREEZE offers the powerful BREEZE Explosion Damage & Injury Assessment Model (ExDAM).

TNT Equivalency Models

For situations in which limited characteristics of an explosive vapor cloud are known, or in which a conservative estimate of blast effects is desired, the TNT equivalency models developed by the U.S. Army and U.K. Health and Safety Executive provide an excellent modeling option.

TNO Multi-Energy Model

An additional level of refinement in explosion modeling is provided by the TNO multi-energy model. This tool allows vapor cloud explosions to be better characterized with the definition of one or more sub-clouds.

Baker-Strehlow-Tang Model

The Baker-Strehlow-Tang model provides a powerful tool for simulating vapor cloud explosions that accounts for the degree of confinement (a key factor in determining whether a flash fire or a true explosion will occur), flame speed, ground reflection, and the number of directions in which the blast can expand. Like the TNO multi-energy model, the Baker-Strehlow-Tang model also allows an explosive vapor cloud to be characterized as multiple sub-clouds.

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Related Products & Services

  • Evaluate damage to structures and injury to persons caused by explosions in three dimensions

  • Analyze potential risks associated with LFG and LNG releases

  • Analyze and visualize model results plus meteorological and terrain data

  • Custom EHS, modeling, and programming solutions

Upcoming Training

Fundamentals of Air Dispersion Modeling

  • New Orleans, LA | Oct 16 - 17, 2018
  • Denver, CO | Feb 05 - 06, 2019
  • Newark, NJ | Apr 09 - 10, 2019

AERMOD Modeling Computer Lab

  • New Orleans, LA | Oct 18 - 19, 2018
  • Denver, CO | Feb 07 - 08, 2019
  • Newark, NJ | Apr 11 - 12, 2019

Practical Air Dispersion Modeling Workshop

  • London, United Kingdom | Oct 10 - 12, 2018
  • London, United Kingdom | Oct 10 - 12, 2018
  • Chicago, IL | Nov 07 - 09, 2018

Practical Air Dispersion & Accidental Release Modeling Workshop - International

  • Kuala Lumpur, Malaysia | Aug 08 - 10, 2018
  • Seoul, South Korea | Sep 12 - 14, 2018
  • London, United Kingdom | Oct 10 - 12, 2018

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