Who
San Diego County Water Authority
Where
San Diego, California, USA
What
30, 33, 39 and 42 inch bar wrapped concrete pipe condition assessment and leak detection
Challenges
- Long segment lengths
- Access points are offset from pipeline
- Bends and turns in pipeline
Who
San Diego County Water Authority
Where
San Diego, California
What
Condition assessment and leak detection
Challenges
- High Temperatures
- Concrete Encasement
- Confined Spaces
- Sharp Bends
Project Overview
KenWave was contracted by the San Diego County Water Authority (SDCWA) to utilize KenWave’s Dynamics Response Imaging™ (DRI) technology for condition assessment and leak detection of 4.4 miles (7.08 km) of 30, 33, 39 and 42 inch Bar Wrapped Concrete Pipe (BWCP) transmission mains in San Diego, California, USA.
KenWave’s team completed the inspection over several days, assessing the 4.4 mile scope of the Tri-Agencies transmission pipeline. The inspection was completed without any disruption to service, and by using only temporary external sensor connections to the surface of the pipe via existing access points.
Results
- A residual stiffness profile of the 4.4 mile watermain was delivered with a resolution of 15 feet.
- Three areas of interest along the watermain were detected with a relative decrease in stiffness.
- Detected an additional 380 feet of 30 inch steel pipe, which was not found in SDCWA’s records.
- Leak detection was performed simultaneously with the condition assessment on the BWCP transmission main.