Since light rays moves straight line only, to see what is beyond the bend is impossible. Camera inspection is the best solution. Regular inspection can help keep operation safe and reach the expected lifespan of the pipeline in entry restricted areas. At this instant decide the course of action to rectify faulty drain without breaking it. Basic visual inspection can be done visually from the outside. Inspection of inaccessible parts, or when getting more information than from just a visual check is necessary, special tools must be used.