The Butterfly Valve Mystery
Wondered what a submerged Deep Trekker PIVOT ROV’s camera captures when submerged into a large diameter waterline? CPM’s recent project with a water utility client captured amazing CCTV footage providing a simple explanation for the (considered) inconsistent data acquired through the client’s modeling software.
The ROV’s crystal clear video in a full pipe showed a butterfly valve, believed to be closed, was in fact opened, solving the questionable data in one inspection! During the inspection the cameras also captured a lonely stick of pipe inexplicably laying in the bottom of the pipeline. CPM field staff deployed and swam the ROV through 1300-feet of pipeline in about an hour, while the clients’ viewed the display screen in real-time. No video processing or downloads. No waiting. No need for divers with the accompanying risk, cost and coordination.
A few facts about subaqueous swimming CCTV inspection systems: they are engineered to strike the perfect balance between size and power, inspecting pipes 24-inches and larger. Hardware and software are precisely optimized to increase performance, ability, and efficiency. Fully immersible camera provides 200° range of motion, improving viewing, operating and data recording. The six thruster configuration allows the inspection system to move laterally, pivot effortlessly and withstand strong currents, while software allows for semi-autonomous navigation.
CPM was contracted to perform a phased pipe condition inspection utilizing INGU Pipers® free floating pre-screening inspection tools, Electromagnetic Bracelet Probe™ (BP) scanning, and ultrasonic thickness (UT) measurements on two wastewater force main pipelines.
Blazing the trail of large diameter pressure pipe rehabilitation in the U.S.