Problem: The Caltex Garage was experiencing problems with a storm water pipe which was blocked and constantly causing manholes to overflow every time it rained.
The Caltex Garage called us to unblock and CCTV inspect the pipe line to determine what was causing the blockages. The CCTV camera inspection revealed that there was a gap in one joint and that pipe was blocked with building cement. The Garage did not want to have to chop open, dig and replace the blocked section of pipe since it is very close to the pump
Solution: We advised Caltex there is a possibility we could grind the concrete out using a Nu Flow Micro cutter and the correct cleaning head.
We also advised that this process would cause damage to the pipe and we would reline the damaged section of pipe once it was unblocked together with the shifted joint seen in the initial camera inspection.
We were given the go-ahead and managed to remove the concrete blockage.
Once the concrete was removed we lined 2 sections of pipe using structural liners; one covering the shifted joint identified during the initial camera inspection and a second section covering the damaged pipe where the concrete was.
How it works: An epoxy saturated liner is pulled into the pipe. Within the liner is an inflatable bladder. When the liner is in the correct position the bladder is inflated and left inflated until the epoxy has cured.
Once the epoxy has hardened the bladder is removed leaving behind a “nu pipe” within the host pipe.
