One device was invented and patented by a San Diego County Water Authority engineer.
It takes a lot of pipelines to get water to all of San Diego County’s nearly three-and-a-half-million people. This story is about large-diameter pipelines.“These large diameter pipelines are known in the industry as transmission pipelines. So they’re like the main arteries in your body," said Martin Coghill.An undated map shows the major water transmission pipelines that bring water into San Diego County.
Before heading to the area at the Goodan Ranch Preserve where the pipeline maintenance was happening, Coghill did a bit of show and tell, revealing the different ways he and his colleagues have of determining what shape the all-important transmission pipelines are in. “This goes inside this foam insert and the technology inside this ball can hear leaks as this flows through the pipeline," Coghill said as he showed the device.
There’s another device being used for this inspection — it's at a pipe access point just down the road. It's an electromagnetic tool, invented by the company doing this part of the inspection —One of a series of discs that make up an electromagnetic detection device is shown on March 4, 2024. San Diego, Calif.
“The sensors will fit to the entire circumference of the pipeline," Coghill said."We can find the local corrosion spots that might be occurring to the pipeline, within the pipeline, and while they may seem small, with the pressures and the volumes of water that we have inside the pipeline, even a leak can be quite devastating."
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