Pipeline Construction

The pipeline route is surveyed and fencing modified to facilitate access during construction
Graders, bulldozers, excavators are used to clear and prepare the easement ready for construction to commence.
Top-soil and vegetation are stockpiled separately to assist in restoration works after the pipeline is completed.
Pipe is transported in to the easement and laid end to end next to where the trench will be dug.
The areas of weld are cleaned and pipe joints are coated to reduce the possibility of corrosion.
Pipe sections are welded together. All welding is tested to ensure quality.
Where required, specialized machinery is used to bend the pipe to conform with the contours of the land and the pipeline route.
Specialized trenching machines and excavators are used to dig the trench. Side Booms are used to lower the pipe into the trench.
Pipe is covered by fine grain material (padding) to protect the pipeline coating from stones or other sharp objects.
Using water, the pipe is pressure tested (hydro-tested) to ensure it is fit for operational service.
The subsoils are compacted to limit settlement of the trench through the operational life of the pipeline
The trench is backfilled with the previously excavated subsoil material.