Liner Integrity Test

This method controls the integrity and non-damaged statue of the fields with completed geomembrane application according to ASTM D7953 (American Society for Testing and Materials). It detects simply and fast if there is any failure in the system by providing the quality control of enlarged leak-tightness systems in company with changing regulations.

Arc Testing Method: This test detects all 1mm holes on the geomembrane surface according to ASTM D7953, however studies show that this method can determine much smaller damages than 1mm.  It is applied that a high-voltage power source sends current to geomembrane surface by means of probe fixed to a mechanism which technician can easily use. The current is consistently transferred to surface by running the probe on the geomembrane surface. It is concluded that the current makes arc with lower conducting layer by passing over the geomembrane in case of any irregularity (hole, torn, thinning etc.) on the geomembrane. At this stage, device alerts the technician by giving audio-visual signals. GEOSURVEY informs all damages detected on the scanned geomembrane surfaces to the repair crew by the means of written form and schedule. The repaired points are tested once again.

Advantages of Liner Integrity Test:

Responsibility: GEOSURVEY takes responsibility for control of field integrity along with routine test methods at the stage of geomembrane application and issues a certificate according to this. The potential damage detection, which is impossible to handle, on the black geomembrane is carried out without any problem thanks to inspection.

Low Cost: Comparing the cost of Arc (Integrity) test and the budget which is required to fund for fixing the problems because of leaks from potential damages on the geomembrane, it is obvious that the test cost is much less than repairing them.

It is practical and no installation required: This method is not required a permanent field installation. It is fast and reliable method in order to be sure if there is no damage after geomembrane application and to control the quality.

Fastness: A technician can approximately control 6.000 m2 application per day. Test duration is easily increased or decreased according to the project requirement and field condition.

Supervision

We operate the progressing geosynthetic application (GCL, geomembrane, geotextile, drainage geocomposite, etc.) on your field with our experienced supervisors on behalf of you.

Inspection

We carry out the tests of your geosynthetic applications on the field with our experienced team and calibration equipment.

✓ Inspection: We carry out the tests of your geosynthetic applications on the field with our experienced team and calibration equipment.

✓ Vacuum Test: According to ASTM D5641 standard, this method is applied on the repairing and reinforcement (patch) fields which is used the extrusion weld method.

✓ Air Pressure Test: According to ASTM D5820 standard, this method is used to test the sustainability for parallel twin welded fusion welding which is divided by an air channel.

✓ Welding Resistance (Tensiometer) Test: According to ASTM D4437 standard, this method is applied on the completed geomembrane panel welding or on the samples of testing welding before the main welding. It gives opportunity to show the quality result of welding resistance based on a numerical value as N/mm.

Reporting

✓ Calibration procedures of all equipment in use
✓ Control of manufacturer test reports and laboratory test reporting of geosynthetic materials supplied within the scope of your project
✓ Daily logs of ongoing technical works within the scope of the project
✓ Logs of the quality control tests and final result report
✓ Leak-tightness control result report after Liner Integrity Test