Pipeline Testing

Low Pressure Air Testing

• Post installation and assumption testing for underground pipelines
• Identify problem joints or defective pipe from 150mm to 450mm diameter

Mandrel Testing

• Initial and assumption testing for underground pipelines
• Verify the quality of installation for 150mm to 450mm diameter pipelines

Re-Rounding

• To correct deflection in pipelines from 200mm to 450mm diameter that are out of round
• Process involves the insertion of expansion device into a pipe with oval defects to return it to a circular cross section
• Increases pipeline capacity

Joint Testing

• Newly installed pipe sections are joint tested to prove construction integrity; post installation
• Identify sewer pipe joints that are defective and can be successfully sealed by the internal pipe joints sealing process

Smoke Testing

• Inflow is leading cause of collection system overflows
• Identifies the location of exfiltration
• Identifies direct connections between sources of inflow and sanitary/storm sewer cross connections

Dye Testing

• Identifies specific inflow points; pipe sections that displayed potential inflow sources during smoke testing are evaluated with dye
• Dye is introduced into the identified pipe sections, while the flows downstream of the dyed source are CCTV inspected to determine the path of flow
• Main use of procedure is to locate lateral cross sections