BREEZE Hazardous / Toxic (Accidental) Release Models
BREEZE HAZ software makes it easy for environmental and safety professionals to identify hazards associated with accidental releases, fires, and explosions and communicate about the potential impacts of those risks. The BREEZE HAZ product line features the following industry-standard dispersion models. A comparison of the various HAZ suites available can be found here.
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For accidental atmospheric releases (dispersion):
The following models are included in the BREEZE HAZ Pro and Dispersion modeling suites.
- AFTOX – is a Gaussian puff / plume dispersion model that estimates concentrations downwind from accidental chemical releases where the dispersing plume has the same density as air.
- INPUFF – is a Gaussian puff model that simulates the atmospheric dispersion of neutrally buoyant or buoyant chemical releases. The model accounts for point sources and a release duration that is either finite or continuous.
- DEGADIS – is a dense gas dispersion model that estimates concentrations downwind from an accidental chemical release where the dispersing toxic or flammable substance is initially heavier than air.
- SLAB – is a dense-gas dispersion model used to estimate pollutant concentrations downwind from an accidental chemical release that is heavier than air.
BREEZE is also the exclusive distributor of Chemical Hazardous Air Release Model (CHARM®), an accidental release modeling system for complex and flat terrain scenarios.
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For fires:
The following models are included in the BREEZE HAZ Pro and Fire / Explosion modeling suites.
- Confined Pool Fire – for fires that occur when liquid is ignited in a confined area such as a dike or a tank
- Unconfined Pool Fire – for fires that occur when an unconfined spreading pool of liquefied fuel gas ignites
- Jet Fire and BLEVE – for fires that result from the leak or rupture of a pipeline containing a compressed or liquefied gas under pressure
BREEZE is also the exclusive distributor of Chemical Hazardous Air Release Model (CHARM®), an accidental release modeling system capable of modeling pool fires, jet fires, and BLEVEs.
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For explosions:
The following models are included in the BREEZE HAZ Pro and Fire / Explosion modeling suites.
- U.S. Army TNT Equivalency and U.K. HSE TNT Equivalency – for surface or free-air bursts where the explosion is centered at a single location
- TNO Multi-Energy – for vapor cloud explosions where the model uses a series of sub-blasts corresponding to potential blast sources within the cloud
- Baker-Strehlow – accounts for the variability of the blast strength by expressing the explosion as a number of fuel-air charges, each with individual characteristics
BREEZE is also the exclusive distributor of Chemical Hazardous Air Release Model (CHARM®), an accidental release modeling system capable of modeling explosion overpressures from mechanical and vapor cloud explosions.
See also the refined explosion modeling software: HEXDAM and VEXDAM.
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