Laser scanner helps municipality assess water supply tunnel

Problem: The City of Bellingham, Washington, wanted to inspect one of its water supply tunnels in order to proactively address any potential threats to service, including corrosion, cracks, instability and stress. Inspections typically require the tunnels to be removed from service. Water supply tunnels, however, are critical infrastructure and it’s preferable to avoid removal from service unless necessary.

Solution: Unlike traditional inspection methods, 2G Robotics underwater laser scanners enable water supply tunnels to remain in service during inspections, allowing assessments to be conducted efficiently and effectively at no inconvenience to operations or customers. The systems capture high-precision 3-D models and measurements of underwater structures and environments. These models provide the accuracy needed for detecting and assessing damage, developing design and repair plans, performing maintenance and installations, and ensuring continued safe operation.

Result: The ULS-200 generated a high-resolution 3-D model of the water supply tunnel, providing detailed dimensional information of small features and overall tunnel deformations. Using the data, engineers were able to make informed, cost-effective decisions about the expected longevity of the tunnel, maintenance requirements, and how to best proceed with repairs, without ever disrupting the water supply. 519/489-0005; www.2grobotics.com.