A Pacific Northwest-based pipe repair company is no stranger to innovation. Trenchless Pipe Repairs (TPR), located in Sumner, WA, has been taking on unique projects big and small across the region since it opened shop in 2011.
Because it keeps busy completing municipal, commercial and industrial projects across Washington, Oregon and California, TPR understands the importance of having durable, effective and efficient equipment that will serve its business long-term.
Recently, TPR decided to try out SpeedyLight+, the LED ultraviolet light fast-curing technology for laterals. The crew was tasked with curing a 100-foot-long, six-inch diameter pipe outside of a newly built, multi-family residence in Seattle. PRT’s Channel Development Manager Steve Webster joined them for the demo.
The process includes inverting or pulling a flexible felt or fiberglass liner inside the degraded pipe and inflating the liner to press against the inside walls. To cure and harden the pipe, the liner is exposed to ultraviolet light (UV).
LED UV Advantages
The advantages to LED UV curing compared to more traditional curing methods like hot water and steam are endless, Webster notes. LED UV curing is less disruptive to communities because it requires a smaller footprint when performing trenchless repairs, with no large trailers or trucks blocking roadways. In addition, the process requires less time and consumes less energy than most other options.
“This can be done in an hour, compared to days of interruptions and sidewalk tear ups—and then the reconstruction,” Webster says.
Nick Patrick, the founder of TPR, says the SpeedyLight+ will come in especially handy when his crew is working on projects with short deadlines. Because they focus closely on industrial and commercial markets—repairing pipes for places like hospitals and shopping malls that may be open 24 hours a day or close for minimal time—being able to complete the work without having to relocate occupants is ideal.
“The effectiveness and the speed of the cure is what allows us to do those types of projects. It opens it up a lot more for those types of industries to get in there and rehabilitate without having to shut down—because they don’t have that ability.”
UV LED curing also eliminates some of the safety risks, Patrick says.
“It takes a lot of safety factors out: wrong mixing of resins, training operators. It takes out the boiler system—people getting burnt, dealing with water coming to the sites. Now we are just dealing with air,” he says.
Because the SpeedyLight+ uses a single-component resin, the risks associated with mixing resins are also erased, and any extra resin can be saved for future use. Roughly 15% of the mixture goes to waste with other curing methods, Patrick says.
The control over the curing process with the SpeedyLight+ is another stand-out difference, Webster says.
“With your typical steam or hot water, when you start curing—it’s like a fuse—it goes to the very end, you have no control. So if there’s something wrong in the middle, there’s no stopping it,” he says. “With this, you can turn the light on and off any time you want to stop the cure and start the cure.”
The SpeedyLight+ camera head is able to show operators what’s happening underground every step of the way, giving them the ability to control the speed and accuracy of the curing process.
“That’s one of the nice features about the UV. There’s no rush,” Patrick says. “You’re getting the job done. You’re monitoring everything you do.”