CCTV Inspection of Trunk Sewers


The accurate inspection and condition assessment of large diameter sanitary sewers is becoming more and more important.

Our sewer inspection technology is capable of performing detailed inspections in large diameter sewers with various flow conditions. We are able to locate serious defects such as cracks, infiltration, deformations and intrusions.

The “one set up” capability of our system allows our camera to inspect lengths of up to 3km from one location, thereby reducing the number of setups required. This saves time and money as well as minimising disruptions in congested areas.

Our CCTV Unit

A Hino 4×4 500 series truck has been specially fitted out to house a long range CCTV unit which includes: a control unit, recording devices (including a back up system) and three phase electric winches and fibre optic rotary joints. The truck includes:

  • Up to 3km of fibre optic cable used to transfer the digital signal back to the control unit for recording,
  • A power supply for lights and camera operation housed within the float system unit,
  • A CCTV camera mounted on a floating device with four LED lights for illumination in the pipe,
  • Two trailers with hydraulic drums complete the unit. They contain up to 3,000 metres of 6mm rope to control the direction and speed of the survey.