One of the most important aspects of regeneration or refurbishment of wells is the detection of well deterioration at the earliest stage possible. For this purpose, HAS makes use of this specially equipped camera vehicle to carry out TV-inspections, for example. In this context, a colour camera with a flexible head is employed which makes it possible to detect cracks or other damages and to measure fissures, all down to a depth of 500 m. Ideally, well constructions are regularly checked optically, so that Anger’s is able to determine the point in time of a regeneration process early enough to prevent larger losses of performance.