抄録
Construction Quality Assurance (CQA) plays an important role in producing a quality containment system. Electrical liner integrity surveys are non-destructive CQA tests that help locating leaks and reducing defects at post-installation of the liner systems and even after geomembranes are covered with soil and water. A new and innovative geomembrane, GSE Leak Location Liner incorporates a thin layer of electrically conductive layer on the bottom surface of an insulating geomembrane that allows it to be 100% sparked tested for defects. Liner integrity surveys on electrically conductive geomembranes have been tested and verified as the most effective and accurate candidate in locating leaks in installed geomembranes after cover soil installation. Based on large scale field tests and commercial scale tests that have been performed by third party surveyors, the leak surveys demonstrate that an electrically conductive geomembrane can significantly increase the quality of electrical liner integrity surveys by improving both speed, accuracy and expanding detection limits. It also allows the use of liner integrity surveys in applications that were previously impossible such as multiple-layer systems, on side slopes and in situation where wrinkling has occurred in the liner.
