Enbridge operates Line 21 (the Norman Wells Pipeline), which carries crude oil 870 kilometres (540 miles) from Norman Wells, Northwest Territories to Zama, Alberta, where it enters a third-party pipeline system and is sent on to Edmonton.
The 12-inch-diameter pipeline travels approximately 750 km (466 miles) through the Northwest Territories, with a design capacity of 50,000 barrels per day. Enbridge pipeline assets in the Northwest Territories include pump stations and related facilities at Norman Wells, Wrigley, and Mackenzie.
In November 2016, as a precautionary measure, Enbridge shut down Line 21 to investigate and address slope instability near the Mackenzie River crossing approximately 10 km east of Fort Simpson.
At that time, product was safely removed, or purged, from the segment of Line 21 that crosses the Mackenzie River and re-injected into the pipeline downstream of the river crossing.
There has been no release of product and Line 21 remains shut down. We continue to actively monitor slope movement using geotechnical measuring instruments and by conducting visual inspections within the pipeline right of way.
We value our relationship with community stakeholders and are committed to engaging with you early in the planning process, to receive your input and identify any concerns you might have.
On January 25, 2018, the NEB approved the Line 21 Segment Replacement Project subject to 19 conditions. The NEB also approved Enbridge’s application to decommission the segment of pipeline being replaced by the Project.
Enbridge's Line 21 application and associated regulatory filings can be viewed and downloaded directly from the NEB's website. The NEB’s Reasons for Decision, including a listing of its conditions for approval can be found here.
The Mackenzie Valley Land and Water Board issued the project Land Use Permit (subject to 84 conditions) on February 2, 2018. The GNWT Minister of Environment and Natural Resources approved the project Water Licence on March 9, 2018.
Specialized construction for large waterways and sensitive areas
Pipelines are designed to pass through geographically diverse areas including slopes and other terrain.