Jan 2017

Structure Type

In-pipeline inspection of buried potable water pipeline beneath Toa Payoh Stretch of Expressway

Toa Payoh 800mm Pipeline Leak Detection 

Proceanic Engineering Services Pte Ltd(Singapore) carried out a visual inspection of 800mm pipeline buried under Toa Payoh expressway in Singapore. The inspection was completed using a mini-ROV fitted with underwater camera for live inspection of the pipeline.

The pipeline was not in operation while the inspection was carried out. Each ending of the pipeline was isolated by valves before and during the inspection. The pipeline was depressurized while the access manhole was opened.

  • In-pipeline leak detection required due to strong water-seepage observed in canal undercrossing expressway
  • Pipeline crack and hole visually detected and location marker confirmed for PUB’s rectification work