Steps have been completed as work proceeds on the Transco pipeline expansion project in Franklin and Union townships in Hunterdon County.
In this area Williams Co. has completed pre-construction surveys, cleared and graded land, trenched — moving topsoil to separate mounds in agricultural areas — strung pipe near the trench.
According to the company, once pipe sections are welded together they are “placed on temporary supports along the edge of the trench. All welds are then visually and radiographically inspected. Line pipe, normally mill-coated or yard-coated prior to stringing, requires a coating at the welded joints. Prior to the final inspection, the entire pipeline coating is electronically inspected to locate and repair any coating faults or voids” before the pipe is placed in the trench and backfilling begins.
That is followed by testing the pipeline and restoration of the work area.
The pipeline is intended to supply the New York-area market with natural gas from the Marcellus Shale, primarily in Pennsylvania