The installation procedures for our Envirolock configurations are nearly identical. For new pipelines, segments can be pre-equipped with Envirolock in our manufacturing facility. In this case, the segments are then welded in the field in either open trench or horizonal directional drilling settings. Alternatively, Envirolock can be installed on both new AND existing pipelines through a first-of-a-kind field-based process featuring an in-trench robotic carbon fiber Multi-Axis Winder (MAW). This capability was specifically developed to install Envirolock and is not used anywhere else in the world.  All installations are custom-configured to the pipeline and the client's needs.

In-Trench Installation Process & Requirements

1. TCI will work with the client to secure regulatory approval for Envirolock's installation.
2. The site is excavated and made ready to receive our crews by the client in advance. Then TCI mobilizes crews, equipment, and materials to the site. If the existing pipeline is operational, the client derates the flow to 80% MOP of the highest operating pressure observed in the previous 60 days. This will last only for the duration of the installation process; complete flow stoppages are NOT required.
3. Field crews prepare the pipe segment surfaces that will be directly in contact with Envirolock (underneath the ECS end caps/bulkheads, the entirety of the EPRS, and each ECA). Preparations are performed in accordance with SP10-A standards.
4. For the ECS, crews first apply the end caps/bulkheads and Enviromesh. Crews will also install monitoring/leak detection equipment into ECS at this stage.
5. Next, crews apply the inner layer for all Envirolock configurations.
6. The "TCI-CRAWLER" (engineered mobility for in-situ application of Envirolock technologies), which houses our carbon fiber MAW, is lowered or driven into the trench. As the TCI-Crawler moves along the length of the pipeline, the MAW applies the carbon fibers.
   • The TCI-Crawler utilizes modified shoring boxes as the structural supports for the MAW and for worker safety.
   • The MAW is a first-of-a-kind robotic system engineered specifically for Envirolock. It is based on Cygnet Texkimp's 3D Winder machine, and will weave carbon fibers using a multi-axis approach that simultaneously utilizes up to 8 spools of carbon fiber. It can apply a remarkable 1+ kg carbon fiber/min and accommodate pipeline diameters between 4-36 inches.
7. Finally, the outer protective shell is applied to the required thickness for the applicable Envirolock configuration. The pipeline is then reburied and TCI's crews demobilize.

QA/QC data is collected and verified throughout the entire installation process by qualified staff. Additionally, the fast-curing polyurea allows for near-instant backfilling. Installation can take place in any conditions, including in temperatures down to -40 degrees and in the rain and snow.

TCI and a major Alberta pipeline operator are partnering to demonstrate this process by installing Envirolock on an active pipeline in summer 2026. We gratefully acknowledge Alberta Innovates' contribution of $750,000 towards this "Ground-Breaking Advancements" project.

Envirolock Maintenance & Repair Requirements

Once installed, Envirolock requires NO ongoing maintenance. Due to its material properties, the Envirolock system is expected to last for decades, except in the following circumstances:

• If Envirolock sustains damage while protecting the pipeline from a third-party strike or geohazard, TCI will remove the damaged Envirolock section and reinstall a new Envirolock section, leaving the carrier pipe and the remainder of the original Envirolock system still intact.
• If a leak or rupture occurs inside the ECS, clients should schedule a routine repair sometime within the next 6 months to replace the damaged segment. TCI can then reinstall Envirolock over the repaired section. In the interim period between the leak/rupture's occurrence and the segment's replacement, the pipeline can continue operating normally. NO emergency flow stoppages are required. ECS will hold the captured material until repairs are completed.
• In the event of a pipeline incident, similar to the ECS, EPRS and ECA can be removed and reinstalled following carrier pipe repairs.