Trackable Pipeline Pigs
Trackable Pipeline Pigs, or Trackable Swabs, are an advanced method of locating an internal obstruction / blockage of pipes. This technique involves using adapted Pipeline Pigs and self-contained transmitters called Sondes which are inserted into a cavity inside the Swab.
Blockages can be located by pushing the Swab and Sonde assembly (Trackable Pipeline Pig) through the pipe until it meets an obstruction and stops. That position can then be detected and located using a cable and pipe detection locator such as a Cable Avoidance Tool (C.A.T.) by an operator above ground.
At the point of obstruction a small section then can be isolated for investigation rather than having to dig out the entire pipe run which may run along a road or in a built up or inaccessible area. Note: For more detailed information on how to use the C.A.T. refer to the ‘Using a C.A.T. With Trackable Swabs / Sondes user guide.