Video nozzle saves on inspection costs
Problem: The city of Denton, Texas, was looking for a way to increase CCTV footage to document successful cleaning and to decrease the cost of operation of their conventional CCTV mainline camera truck.
Solution: The city purchased an Envirosight Jetscan video nozzle, distributed by Green Equipment. The nozzle is an easy way to see what is being jetted. The video nozzle is affordable, yet quickly captures valuable HD footage of pipe that can be viewed moments later on a PC or tablet. “We can identify the cause of any kind of stoppage that we have (roots, grease, bore-through),” says Drew Huffman, Denton field services supervisor. “With this information, the combo truck operators can clean the line more efficiently by being able to choose the right kind of nozzle for the kind of problem that is found in the line.”
Result: The city has been able to increase overall CCTV footage while reducing cost and improving productivity. They’ve been able to keep the CCTV crew on plan, with the ability to not waste time on good lines that don’t require full PACP review. The city also found that the cost of operating the Jetscan came in at 19 cents per foot of operation, versus a cost of 83 cents for a conventional CCTV camera truck, saving $181,674 for 283,866 feet of sewer line inspection. 800/391-7612; www.greenequipco.com.
Camera helps locate two pipeline leaks
Problem: A UK utility had identified a leak on an asbestos cement pipeline in a traffic-sensitive area. The pipeline was nonmetallic, therefore traditional technologies such as noise correlation and flowmeters were not successful in pinpointing the leak’s exact location. The utility contacted PIPA, an internal pipe inspection product manufacturer and service provider, to help locate the leak using intrusive technology.
Solution: PIPA uses technology that includes a pressure-rated camera (Hydrocam) and hydrophone capsule (Pipepod) tethered to a 300-foot semirigid pushrod to give the operator live video and recorded audio data during an inspection. The system enters a pipeline through a 2-inch tap, and is fully chlorinated during its insertion. It works on a live basis, with no interruptions to the clients’ services.
Result: The tethered insertion technology precisely identified the leak points. One leak was identified at 33 feet and an additional leak at 150 feet. An unknown inline valve was also identified during the survey. The inspection was completed in one day. 910/509-7225; www.matchpointinc.us.