Visual inspection inside pipes and pipelines, to determine the condition of the internal surface.
Results are presented in a visual report with customers' acceptance criteria and a conclusion.
On request the inspection can be supplied on DVD.
Visual inspection, with or without optical aids, is the original method of NDT. Many defects are visible at the surface and can be detected by careful visual scrutiny.
Optical aids include low-power magnifiers, microscopes, telescopes and also specialised devices such as boroscopes, endoscopes and other fibre-optic devices for the inspection of restricted access areas. These devices can also be used with television camera systems. Much of the success of visual inspection depends on the surface condition and the lighting arrangements. Surface preparation such as cleaning and etching is often used, and also surface replicas can be taken for both macro and microscopic examination. In-situ metallography is also possible.