The North Montney Mainline stretches 206 kilometres across Northeast B.C., and will pull gas from producing wells in the region and ship it east through Canada and into the United States.
The total build is valued at $1.4-billion, with prime contractors including Surerus Murphy, Macro Spiecapag, and Banister. Here are some pictures of the construction, courtesy of Surerus Murphy.
Clearing: With much of the pipeline routed through forested Crown land, there was a requirement to bring on board a clearing contractor. Paul Paquette & Sons were appointed to undertake this work. On average, the right of way was approximately 37 metres wide and this contractor were able to achieve an advance rate of more than 400m per day with their crews.
Stringing: The pipe is loaded on trailers from the project stockpile locations (Chetwynd and Hudson Hope), and then brought to the right of way. Pipe is then lifted off the trailers using sidebooms and placed on wooden skids on the ground.
End prep: The pipe ends are then prepared using a rotation end prep machine. This machine cleans up the pipe ends and prepares them to a prescribed profile in preparation for welding.
Bend: The pipe is then bent using a hydraulic bending machine to follow the topography.
Manual & mechanized welding: The pipes are welded together into a continuous string above ground to minimize entry to excavations.
Coating: Following confirmation that the weld has passed its NDE, a MCL coating is applied to the weld area to protect the steel pipe from corrosion.
Ditch: The pipeline ditch is then excavated using a mix of excavators and ditching wheels, dependent on ground conditions.
Lowering in: Using sideboom tractors, the pipe is then lifted and lowered into the ground.