The latest edition of Underground Utilities is available to read here
It includes a special feature on the CCTV industry, which gives a fascinating insight into how maintenance of underground utilities and pipelines have evolved thanks to the efforts of a few good people at the forefront of engineering ingenuity. These systems have been transformed from hand-held black and white cameras that could only be used by men who risked their lives descending into large diameter pipelines holding red hot light bulbs, to sophisticated digital systems travelling on automatic transporters with panoramic cameras and internal LED lighting. Furthermore bespoke software packages can analyse hundreds of pieces of information and instantly send the results to the clients.
To see the benefits of the systems a case study from Manila in the Philippines shows how the use of CCTV has saved the utility company 110 million litres of valuable water per day by identifying 319 leaks and 173 illegal connections. And the work is still ongoing.
Next issue: Pipe Bursting, CIPP and Manhole repairs!