Visual

Visual Inspection involves the observation of light reflected from the surface of an object to the human eye. Although not a highly technical method, it’s the most widely used technique for corrosion inspection. The quality of inspection is directly related to the experience of the inspector with the equipment and environmental conditions. Corrosion products are sometimes visible, which can lead to the identification of the corrosion problem. The appearance of corrosion products from several alloys is provided in Table 62.