Among the most important structures in industrial environments, chimneys are commonly found near fossil fuel combustion facilities, such as refineries. The chimneys ensure that exhaust gases from these sources are properly vented, while also separating harmful exhaust gases from human living areas.

Other factors that can affect the longevity of a smokestack include chemical attack and temperature excursions. A good inspection program can identify early signs of trouble and prevent costly unplanned facility outages.