It's dangerous not to have your industrial chimney inspected regularly.
In fact, fire codes mandate it. Chimney fires burn ferociously igniting in a matter of seconds from years of built-up scale or by-product. These fires can burn at 2100 degrees F. They frequently melt dampers and chimney caps, and can actually "melt" mortar! Flames and dense smoke rush out of the chimney and into plant areas with extreme force and with such pressure and extreme heat that anything in its path will be completely destroyed including your valuable facility, inventory, and years of hard work.
The only true fire safety is prevention through industrial chimney cleaning and inspection at frequent intervals.
Regular inspections and maintenance of your industrial chimneys will prevent structural damage and structure fires.