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Sensor DDS - Mobile Covered Geomembrane Integrity Inspection Technology
SENSOR DDS MOBILE technology is designed to inspect the integrity of covered membranes / liners / asphalt irrespective of covering type (e.g. liquids, soil, gravel, etc.). In this version of SENSOR DDS technology no permanent components are installed on site, electrical sources are temporarily placed near the area to be tested and the sensors are carried to each grid location where measurements are taken. This technology is based on fact that a generated electric current will follow any moisture through a damaged area of the liner, and mobile sensors placed on top the covering layer can measure the resulting current flow.
Waterproofing methods such as asphalt or plastic liners are often covered with a variety of materials (soil, gravel, concrete) following their installation in many different applications. It is a paradox that it is mainly the installation of this “protective layer” which is the most frequent cause of a damage to a geomembrane.
Experience is critical Technicians must differentiate between environmental / geological influences and anomalies that are as a result of damage. All Sensor technicians are highly experienced and backed by Sensor’s 30-years of accumulated know-how.
The use of SENSOR DDS MOBILE is limited by the thickness of covering above the liner, which must be no greater than 900mm. Where the liner is submerged (water / toxic liquor) the operable depth is unlimited.
Risk and Liability
After testing and subsequent repairs, Sensor undertakes to guarantee geomembrane integrity issuing a certificate accordingly and therefore reducing your liability.
Low cost
The cost Sensor’s geomembrane integrity control is trivial when compared with the potential cost repairs and risk of consequential damages post-completion.
No installation needed
This method requires no permanent site installation, it is a very quick and reliable way to control quality to ensure no damage remains after installation of a geomembrane and its protective layer.
Any covering material
SENSOR DDS Mobile system works on any type of naturally conductive material such as sand, concrete, water, gravel etc. whatever your material selection for the protective layer.
Flexibility
One Sensor technician can control 10 000m² of the geomembrane per day. We can engage up to five technicians and can therefore survey 50 000m² per day, so your project will never be late.
Experienced technicians
Sensor technicians undertake regular training and are selected from the most highly motivated intelligent individuals with a geophysical background.
SENSOR DDS Mobile is a dipole survey used for integrity testing of covered geomembranes. It can be used on liner covered with variety of materials like soil, gravel, sand, liquids, etc. Among the most used applications are:
- Green roofs
- Mining leach pads
- Mining tailing dams
- Lakes
- Balconies
- Water storage tanks
- Industry lagoons
- Sewage tanks
- Landfills
- Landfill capping
- Leachate lagoons
- Dams