Pipeline development and reclamation experience


Enbridge pipelines move over 2 million barrels of petroleum products across North America every day. It would take 6,800 tanker trucks or one every 13 seconds to do the same.

That fact alone makes a pipeline one of the most efficient, safe and environmentally-responsible energy transportation systems available today.

Environmental monitoring takes place throughout the pipeline project. A well-maintained pipeline can last indefinitely – and it starts with quality pipe.

Manufactured to both industry and exacting Enbridge specifications, the pipeline undergoes a series of rigorous tests and quality checks. Third party inspection companies ensure the final product is of high quality and meets all dimensional tolerance specifications.

Once the optimal route has been selected, the pipeline is constructed by stripping the topsoil then conserving it so that it can be returned to the Right of Way. After the Right of Way is graded, construction crews dig the trench.

Welding the sections of pipe to make the pipeline pipe is very exacting. Each weld is inspected using X-Ray or ultrasonic inspection methods.

Following exhaustive testing, specially designed cranes lower the welded pipe into the ditch which is then backfilled and the topsoil replaced.

Once installed, the pipeline is pressure tested with water at a rate far higher than operating pressures.

In instances where a pipeline must cross a water body such as a river or stream, Enbridge consults stakeholders, then applies to several regulatory bodies. If approval is given and the pipeline installed, more environmental testing of fish and aquatic habitat is completed.

Following construction, the land is restored to meet landowner agreements and regulatory requirements. Because they’re rebuilt to exacting standards, pipeline Right of Ways can usually be used as they were prior to construction.

Effective monitoring means continuous feedback. Enbridge continuously monitors all of its pipelines. Pipeline integrity systems employed by Enbridge include pipeline monitoring, integrity management, and measurement. High tech ultrasonic and electromagnetic tools are used to detect even the most minute changes in the pipe.

The best leak detection system is a real time leak detection system. It measures product volume levels at strategic locations across the system. If irregularities are detected, an alarm is immediately sounded.

Enbridge also conducts regular surveys over land and by the air to detect pipeline damaging activities.

The liquids Enbridge transports are continually tested for corrosive elements. If corrosive elements are detected, anti corrosive agents are injected into the pipeline. Regularly flushes are conducted to make sure internal corrosion doesn’t become an issue. When repairs are required, Enbridge excavates, repairs, tests and then sleeves the pipeline with a protective coating.

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