Turbine inspection is executed by inserting bore scopes to locate cracks and anomalies in the blades
. For a thorough inspection of a turbine the dye penetration method is used. This comprises of a special dye that highlights cracks and inconsistencies. In this method, a cleaner, penetrant, and developer are used. Fluorescent dye is usually avoided as it requires visual examination of the crack in darkness with the use of a UV lamp.