Pipe String

The succession of joined individual pipes being used to advance and support the excavation.

Pipeline (also pipe)

Portions of the sewer system that are constructed of piping as opposed to manholes and other structures (e.g., trap tank, sumps, etc.).

Pipeline Reconstruction

The in situ repair of an existing pipeline that has suffered loss of pressure integrity or has been structurally damaged. The liner becomes the principal pressure containment or structural element of the in situ composite pipe structure.

Pipeline Rehabilitation

The in situ repair of an existing pipeline, which has become corroded or abraded, by insert renewal of a liner which rehabilitates the bore of the pipeline but does not contribute significantly to increased pressure capability or increased structural strength, yet does improve flow efficiency/hydraulics.

Pipeline System

Interconnecting pipe network for the conveyance of fluids.