Pipe Tec Inc. will use a jet/vacuum combination unit for cleaning all sewer lines and storm drains. The combination unit operates at 80 gallons per minute at a pressure of 2,500 psi, and be equipped with approximately 800 linear feet of hose. All of our operating technicians have a minimum of 5 years of experience cleaning with this piece of equipment. All of our cleaning trucks are set up with an air gap system that meets all water districts standards to prevent back-flow from the truck to the hydrant. Pipe Tec will clean the lines from the downstream access pits, provided by the General Contractor running against the flow, beginning from the most upstream pit of a particular reach or set of reaches, and begin cleaning so that the debris will continually be pulled downstream.
In order to jet clean the lines, a high pressure water pump on the combination truck will deliver water from attached tanks through a high pressure hose to a cleaning nozzle. The water pumped through the cleaning nozzle shall propel the nozzle and attached high pressure hose through the sewer. Once the cleaning nozzle has arrived at an upstream manhole, the nozzle shall be pulled back through the pipe at a velocity controlled by the operator. During the cleaning process, the cleaning nozzle will not travel faster than one foot per second in the line. While the cleaning nozzle is pulled back, the vacuum system shall be used to simultaneously remove debris flushed by the cleaning nozzle.
In locations where heavy debris deposits are suspected, Pipe Tec will use a cutting nozzle or chain spinning nozzle with the combination unit. The cutting nozzle will revolve 360 degrees, and capable of cleaning at least 6”-36” lines, and operate at 80 gallons per minute at a pressure of 2,500 pounds per square inch. Dislodged debris shall be captured and removed from the line either by the vacuum or a basket. A CCTV tractor camera will follow the cleaning nozzle to ensure the pipe is being cleaning correctly and no damage to the pipe has occurred while doing so.