Right Pipe, Right Time

Non-invasive pipe assessment technology enables a district in British Columbia to prioritize water system repairs
Right Pipe, Right Time
Senior field specialist Matthew Coleman listens as acoustic signals are induced into a section of asbestos cement pipe through a hydrant. The LeakFinderRT correlator measures the speed of the signals as they travel through the pipe. Variations in the speed indicate variations in wall thickness. (Photos courtesy of Echologics)

Maple Ridge, B.C., a district in northeast Vancouver, experienced up to 20 breaks per year in older water pipes, mostly in the middle of the night when pressures were highest. Water surfaced or sometimes washed out small sections of road.

The Waterworks Department repaired...

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