This article, which was published in the March/April 2013 issue of World Water, is a technical paper written by Marc Bracken and Dave Johnston of Echologics. In the paper, Marc and Dave discuss the challenges of assessing the condition of asbestos cement (AC) lined water mains, and how recent developments in non-invasive acoustics are helping municipalities overcome such challenges. The ability for municipalities to detect leaks and measure the remaining wall thickness of AC pipe is important as many of these pipes, which were installed in or around the WWII era and are still in use today, are reaching the end of their service lives.
Click here to read the entire article on page 21 of the March/April 2013 issue of World Water.