Televising equipment aides in infiltration reduction

Problem: The Clear Creek Conservancy District in west-central Indiana began noticing a sharp rise in sewer system flows in the last five years, setting off high-level alarms in lift stations. The district sought a sewer-televising contractor to find the source of additional flow. It also requested the contractor locate and document any defects or causes of infiltration. 

Solution: Using the lateral launch camera system from RS Technical Services, Eco Infrastructure Solutions was able to find sewer mainline and lateral infiltration. The six-wheel-drive transporter with 90-watt drive system motor can maneuver through debris and use its pan-and-tilt camera to inspect defects and taps, and to line up the lateral launch camera. Once the system is in position, the dedicated 90-watt motor launches the self-leveling camera out as far as 150 feet. When a defect or infiltration source was identified, it was located with a Rycom 8869 locator. All inspections were logged into POSM Pro collection software.

Result: Defective sewer mains and laterals were either repaired using Pipe Patch point repairs or by conventional excavation methods. Additional infiltration was reduced by injecting HyperFlex hydrophobic grout into manhole and structure leaks. 800/767-1974; www.rstechserv.com.