Ground Penetrating Radar (GPR)
The majority of Utility companies use Ground Penetrating Radar (GPR) equipment for utility location, tracing and depth. These useful units detect the depth and location of non-metallic services by the antenna receiving an electrical pulse of radar energy that the control unit produces, this is then amplified and transmitted into the ground at a particular frequency, once the scans are downloaded these produce mapping surveys.
This UK’s ageing network of pipes is slowly being replaced by non-conductive (non-metal) pipes – so the GPR equipment is effective – you do not want to risk hitting a gas pipe!