It works with high resolution among 50 and 250 mm supplying exact spatial coordinates, so it is possible to separate and classify objects by its dimensions, shape, and profile. It can be used for leakage localization in drinking water supply networks and inspection of long-distance pipelines up to a length of 10 kilometers. According to Campbell, the assessment of expert asset managers reveals that on concrete and VC pipes, these systems exceed the performance of good CCTV operators. Moreover, these systems have the potential of predicting or forecasting future system deterioration. Barriers There is still no information on the cost associated with such systems.
Some disadvantages lie in the slower inspection speeds required for examination of finer defects.
Also, the systems do not suggest an optimal repair method when cracks are detected. Fraunhoferstrasse 1, D-76131 Karlsruhe, Germany. International No-Dig '95 Conference Documentation, Dresden, September 1995. Disclaimer Statement Neither the Construction Industry Institute nor Purdue University in any way endorses this technology or represents that the information presented can be relied upon without further investigation. Construction Engineering and Management Purdue University 1294 Civil Eng.