How closely are pipelines monitored? Is there daily visual or aerial inspections of all pipeline routes? Are there pressure and flow meters along all lines hooked up to valves that can automatically close if there is a sudden drop in pressure or flow from the readings further up the lines? – Graham

Transmission pipelines are monitored 24/7 from control rooms using software that gathers critical information from the pipeline. Pipeline operators use a wide range of tools to monitor pipelines constantly – sensors that monitor temperature, flow rate and pressure, fiber optics, video cameras, in-line inspection tools, aerial surveillance and even people walking the pipeline right-of-way. These tools and systems quickly alert technicians if a change is detected in the pipeline. Then using valves located at key points in the line, pipeline operators can  quickly shut off the flow of product in the pipeline at a moment’s notice. These valves are controlled remotely from the pipeline operator’s control centre.