Recent Posts

Building Infiltration Example

17 minute read

A common part of emergency planning is the shelter in place. More often than not trying to outrun whatever calamity is happening at a chemical plant is more ...

Turbulent Jet Example

9 minute read

In previous examples I discussed release scenarios involving vapour clouds spreading over a large area, carried by the wind. In those examples the momentum o...

VCE Example - Butane Vapour Cloud

22 minute read

In a previous post I worked through estimating the airborne quantity of butane due to a leak from a storage sphere. That example stopped at estimating the to...

Worst Case Meterological Conditions

9 minute read

In a previous post I modeled an example of a plume from an elevated stack. In that example I assumed very stable conditions and a low windspeed – pasquill st...

Air Dispersion Example - Stack Emissions

18 minute read

This is an interesting example that came up in conversation with another engineer related to a construction project happening at an existing facility. Imagin...