Live Line

Published: August 23, 2018 | Last updated: July 5, 2023

What Does Live Line Mean?

In trenchless construction, a live line is any underground utility pipe or cable that is actively in operation. The term can refer to energized electrical lines, water/wastewater pipes, oil and gas pipelines, etc. During trenchless operations, determining the location of these lines is critical in order to avoid unsafe working conditions and costly repairs.


Trenchlesspedia Explains Live Line

Determining the location of live lines is an essential task in trenchless construction activities. Several techniques such as direct induction and direct current methods are used to locate lines so that they can be avoided or redirected as required.

Accidental damage to live lines can result in unsafe conditions. For example, live underground electrical lines are a potential shock hazard for equipment and construction personnel. On the other hand, gas pipelines can potentially result in explosions if lines are ruptured. Additionally, damaged oil and gas pipelines can also be an environmental hazard and likely cost millions of dollars in damages and repair costs.


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