Who
CIMA+
Where
Region of Peel, Ontario, Canada
What
Condition assessment and simulated leak detection for DI watermains.
Challenges
- Fredonia valve box was flooded with water and thick mud
- Debris removal
- Use of a vacuum truck
- Confined spaces
Who
Monterey One Water
Where
Monterey, California
What
Leak detection and condition assessment of PVC Forcemain with suspected leak
Challenges
- Extremely faint noise
- Sloping terrain
- Long distance between access points
Project Overview
CIMA+ was retained by the Region of Peel (Peel) to evaluate non-destructive condition assessment technologies for two 150 mm DI watermains. CIMA+ contracted KenWave to evaluate the 1975 DI watermains located at Jill Crescent and Conquest Drive in the Region of Peel which had previously been evaluated using alternative methods. Up to 250 m pipeline was inspected at each location.
Results
- First segment had cross-correlations of reflections suggest a pipe laying length of 5.7m ±.375m or about 6 m between joints
- Variability was slightly lower than for the first segment, with 0.6 mm between maximum and minimum wall thicknesses and a 7.6% variability in wall strength
- No indication of significant flow obstruction at either location which would indicate valve malfunction