A Boiler’s function is to produce large amounts of hot water and steam, so in order to perform effectively, boilers use an enormous amount of heat. In some boilers, temperatures get so high, they can melt many metals.

To contain this heat, and to protect certain boilers, a special heat-resistant material is used. That is called the Refractory. These refractories are non-metallic materials that are difficult to fuse or melt. They are used to form burner rings, and to cover the inside of inspection doors in the boilers. It is also used to protect other equipment that may be exposed to heat or corrosive gases due to rapid temperature change that refractories undergo, they periodically require repair.

If refractories get damaged, it also damages the boiler. To avoid catastrophic failure, regular inspection of equipment with Elite Thermography using Thermography should be conducted.