Furnace Tube Survey

The object of this survey is to identify any possible coking on the inside tube surface. The build-up of coke acts like an insulator reducing the required cooling effect the product has on the tube. Tube life is reduced by deterioration and a rupture is risked. Thermographers can also perform quantitative analysis of tube surfaces to provide temperatures, however this procedure requires careful gathering of object parameters such as emissivity and background reflected temperatures and should not be attempted without a clear knowledge of the possible sources of error