Using Saraha to locate gravity sewer for construction permission
WRc used Sahara® to locate a gravity sewer for a client in order for redevelopment planning permission to be granted by the water company.
A high-accuracy sonar and CCTV inspection tool used for pinpointing leaks and pipeline condition assessments.
Sahara® is an established and safe deployment method for a range of inspection sensors that can be used to pinpoint leaks in pipelines of any material and undertake pipeline condition assessment surveys. The Sahara® system can be used for the effective management of new and existing pipelines, which can usually be achieved in real-time while the pipeline remains in service, meaning no disruption is caused to your customers.
Sahara® can be deployed through a 50mm tapping (larger may be called for depending on specific equipment required), such as a through-bore hydrant or existing air valve. While there is no maximum pipe diameter for deploying Sahara®, the pipe diameter should be no less than 100mm.
This technique relies on the water flow to carry the sensor through the pipeline, gathering data as it travels. The Sahara® equipment is mounted on an umbilical cable which provides pipeline route tracing - constant, traceable location information through monitoring the length of cable deployed during a survey.
A unique feature of the system is the inclusion of a location sensor that allows any feature detected to be precisely pin-pointed and marked on the ground over the pipeline during the survey.
Tony Owen - Trunk Mains Leakage Manager
Thames Water Engineering
Elhassane Benahmed - Water Resources Manager
Lydec, Morocco