Sea Technology

FEB 2014

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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66 st / February 2014 www.sea-technology.com of the pipes without passing on a large equipment expense to the customer. Armed specifcally with their Deep Trekker DTG2 ROVs, Bill Riley and his team could easily traverse and inspect the submerged pipes, with the ROV carefully foating above the sediment without disturbing it. The pipes range in size from 15 to 60 inches, making the compact and spherical shape of the DTG2 ROV perfect for the job. In- specting the pipes is a constant job for the ROV operators—upon complete inspection of the waterways comes time to start inspecting from the begin- ning again. Deployment of Deep Trekker DTG2 ROV Daily, the team heads out on their all-terrain vehicle along with two Deep Trekker DTG2 ROVs in the back, ready to inspect a section of the irriga- tion system. This large-scale ongoing project requires inspection through- out the community. The team does not always have access to power or the ability to bring along a generator to power their equipment. This makes the unique design of Deep Trekker ROVs ideal for their projects. With batter- ies on board the ROV, operators can still complete their tasks in the most remote locations. Operation time on one three-hour battery charge is typically between six to eight hours. Employing two Deep Trekker ROVs ensures there is never down time on the job. In the feld, two operators set out to the next access point with their ROVs. One team member lowers the DTG2 ROV into the pipe by the tether and remains near the ac- cess point to feed more tether into the pipe as required. The other team member uses the handheld control- ler to maneuver the ROV once it is in the water. The neutral buoyancy of the device allows for the operator to make small horizontal movements while also rotating the camera to take a better look at the infrastructure with- out risking sinking into the sediment below. CAS Asset Management has chosen to use digital video glasses to monitor what the ROV camera is re- cording when it is in the pipe (as op- posed to the on-control screen alterna- tive). Although the integrated screen in the controller is much brighter than any computer screen, the digital video glasses block out all of the sunlight and simulate watching an 80-inch screen. In total, deployment of the DTG2 ROV takes less than a minute. Once the team is maneuvering in the pipe, the 270° camera feld of view is their most trusted asset. Being able to look at the top, bottom or sides of the pipe without having to drive the ROV allows for intricate viewing of potential problem areas with minimal movement that could stir sediment. The team is constantly searching for any blockages and examining the in- tegrity of the structures. Once the team has inspected a certain area of the pipe, they can navigate the ROV back (Top) Deep Trekker DTG2 ROV package. (Bottom) Deep Trekker DTG2 ROV in ac- tion. Feb2014.indd 66 2/11/14 1:12 PM

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