Utility Committee Agenda and Packet 2020 05 12

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WWW.TRENCHLESSTECHNOLOGY.COM 19 a firm familiar with verification studies, was contracted to independently establish the validity of the p-CAT inspection results. In order to perform this validation study, the City removed a 40-ft section of pipe that had previously been identified for replacement as part of a separate improvement project. To evaluate the p-CAT assessment results, a higher resolution tool was utilized to pro- vide accurate measurements. Consequently, Eddy Current technology was determined to be the best method given the pipeline vari- ables and potential for asbestos within the coal tar lining. Dewberry selected JanX IN- COTEST to provide the high-resolution Eddy Current Assessment. Sensors were spaced every 2.5 in. around the full circumference of the pipe. Capturing a reading every 0.941 in. along the entire length of the 40-ft section, nearly 10,000 data points were collected. The resulting data measured the pipe wall thickness along the assessed section to be 0.171 in. For the same stretch of pipe, p-CAT identified the wall thickness to be 0.17 in. “The wall thickness that Hydromax USA’s p-CAT reported was spot on with the eddy current wall thickness results,” said Carl Bundschuh, P.E., senior associate at Dew- berry Engineering. Summary Having verified data along at least one stretch of the assessed pipe has been ex- tremely beneficial to the City of Louisville, Colorado. Peterson stated, “Prior to the assessment, the biggest challenge was not understanding what condition the pipe was in. With this project we were able to get a sense of the pipe’s condition and push off the larger capital project that included the possibility of replacing whole sections of this pipeline.” p-CAT provided a high level of actionable data without the associated high price tag. Verification of the Louisville pipeline results exemplifies this. The INCOTEST/Eddy Current Test and the Hydromax USA p-CAT analysis all found the average thickness of the removed pipe to be approximately 0.17 in. Carl Bundschuh, P.E., had the follow- ing comment on p-CAT’s results, “I was surprised the results were as accurate as they were, further validation would be great in a second location but overall p-CAT is a really nice assessment tool that can be used everywhere without having to excavate and expose large sections of the pipe. It’s a relatively inexpensive assessment tool and assesses long reaches of pipeline rapidly.” Alex Sutton is operations manager is operations manager-water technologies and Ramsey T. Hemaidan is business development manager at Hydromax USA. Pictured Above: A single p-CAT test covering more than one mile of pipe, Louisville, Colorado. PinPointR Redefines GPR Utility Detection and Field Mapping Deliverables ImpulseRadar known as a global innovator of ground penetrating radar (GPR) introduced the Pin- PointR utility GPR in 2019 with an essential goal of providing a system that specifically offers the best performance with the most features of any system for the utility locate professional. Tech Makes the Difference Checking the boxes to achieve these goals started with introduc- ing the first real-time digital dual frequency system that produces unmatched resolution and depth penetration compared to older GPR technology. The advantages of the dual f system are clear. The higher 800 MHz frequency can detect ser- vice connections from water to small conduits of any material type. The lower frequency 400 MHz antenna provides maximum depth coverage for deeper targets. The PinPointR antennas connect wirelessly to any Android device meaning there is no weak point from expensive cables that are easily damaged during day to day opera- tion. The system is stingy when it comes to power consumption and that is the one area it is OK to be less than competing systems. One PinPointR battery can last up to 7-hours of continuous operation. Instant GPS Enabled Google Map Reports from Field to Office Using onboard advanced GPS receivers ImpulseRadar introduces a major addition to the simple to use but powerful, intuitive Android App. Using the touch screen marker functionality conforming to the APWA utility standard all marks are simultaneously displayed on a Google Map. The Google Map field sketches can be emailed immedi- ately from the Android device after completion of the project to either a client as an automatic report or sent to the SUE project manager as a field sketch for reference to support information gathered from the pro- fessional surveyors. Markers can also be exported as KMZ/KML into Google Earth. For those that want survey grade mapping capabil- ity the PinPointR can connect to an RTK GPS system seamlessly. Ergonomics and Reliability What is remarkable is the com- pactness and weight of the system as GPR systems like EM locators are deployed in and out of vehicles frequently every day. The PinPointR has a collapsible handle system leaving the footprint of the system in the vehicle small enough to be stored in an ordinary car trunk. Customer Response is What Matters “Performance is what our cus- tomers are raving about” states Patrick O’Harold Vice President of Tracer Electronics a distributor and North American authorized service and support center located in Leba- non TN. “They are seeing utilities they could not see before it is that simple! This system performs much better it’s like going from 4G to 5G it is a leap forward not just a claim. We are not nudging the bar we are way over it and customers want to see progress that verifiably leaps forward in the tech tools of their trade and the PinPointR delivers”. All ImpulseRadar systems come standard with a two-year limited warranty. www.impulseradar.se 37