We know waterways are important to you and your community. New technologies and engineering techniques allow pipelines like the Prince Rupert Gas Transmission Pipeline (PRGTP) to safely be installed below a river bed, leaving the natural resources above intact and undisturbed. PRGTP’s design, construction and method of water crossing is based on:
- Industry proven construction techniques.
- Field study and stakeholder information.
- Regulatory compliance requirements.
Special techniques and water safety precautions include:
Horizontal directional drilling
HDD is a drilling technique used to bury a pipeline a minimum of 25 feet below riverbeds, brooks and streams.
High-strength carbon steel
When building pipelines near waterways, we use high-strength carbon steel that can withstand the impact from a 65-ton excavator with 3.5-inch teeth.
Corrosion-resistant fusion-bonded epoxy (FBE) coating
A highly advanced, corrosion-resistant fusion-bonded epoxy (FBE) coating that is designed specifically to meet TransCanada’s safety standards.
Cathodic protection system
Cathodic protection connects protected pipeline metal to a more easily corroded piece of metal attached to the pipeline. This technique is also used to protect bridges, boats and cars from corrosion and rust.
Automated shut-off valves
Shut-off valves are located at compressor stations and at regular intervals between them. If there is a drop in pressure, they can be remotely closed immediately or within minutes, effectively shutting down the pipeline.
24 hours a day, 365 days a year, every inch of PRGT will be monitored.