Sewer rising mains

Many sewer rising mains have several things in common: They are a critical asset to the owner, as it is often complicated to divert the flow for an extended period of time.

The accessibility to the pipe is often difficult, as the mains run through densely populated or environmentally sensitive areas or under creeks and main roads. The pipelines often have several bends in their route. Defective sewer rising mains have the potential to cause pollution, damage property and neighbouring services, resulting in significant costs. Failures on rising mains can be caused by external corrosion, internal corrosion or mechanical failures like leaking joints, longitudinal cracks etc. In many cases, the pipeline is still able to withstand the external loads, but not the internal pressure loads.