The first development is the non-invasive measurement of real-time velocity profile of slurry flow in horizontal pipes. Multiple non-invasive sensors measure localized velocities and are combined to provide a velocity profile measurement. This information can be used to determine the approach and onset of solid deposition on the bottom of the pipe. Having this information in real time can enable operation at lower velocities and/or higher solids concentration while avoiding solids deposition and its associated operational costs. An example benefit of such a system is the operation of a tailings disposal line at higher solids density to reduce water usage.

The second development is the non-invasive measurement of pipe wear on slurry lines without internal liners. Presently, such measurements are made by hand-held portable ultrasonic thickness gages which have problems with poor repeatability and accuracy, and high labor cost. The SONAR-based system uses a permanently installed non-invasive ring with twelve ultrasonic wall thickness sensors equally spaced around the circumference. Simultaneous measurements provide a "picture" of the pipe wall thickness around its entire circumference. The benefit is significantly improved pipe wear monitoring, safer operation and avoidance of costly environmental damage due to leaks caused by pipe wear.