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New GSI test method for resistance of conductive geosynthetics
June 1st, 2022
The Geosynthetic Institute (GSI) has a new test method for resistance measured across positions on conductive geosynthetics. Conductive geosynthetics contain an electrically charged backing (usually a thin layer of polyolefin with letdowns containing 20%–30% carbon black) that allows leaks to be detected in lined systems without the need for a conductive subgrade beneath the liner […]
Layfield Geosynthetics and SKAPS Industries release GeoVolt conductive geocomposite
September 20th, 2021
GeoVolt testing. Photograph courtesy of Layfield Geosynthetics Layfield Geosynthetics and SKAPS Industries are pleased to announce the release of GeoVolt, a revolutionary patented conductive geocomposite that makes electrical leak location simpler and more efficient with almost any type of geomembrane. GeoVolt is delivered in rolls and placed directly under the geomembrane to provide a consistent […]
IGS North America to host webinar on electrical leak location
April 28th, 2020
The Geosynthetic Institute (GSI) will sponsor a webinar, “IGS Electrical Leak Location Seminar Series Ep. 4,” on May 14, from 12:00 p.m. to 1 p.m. CDT. The webinar will explain ASTM D8265: The new standard practice for covered geomembrane testing. The aim of the newly published standard practice for covered geomembrane electrical leak location testing […]
ASTM International releases new standard for electrical leak location in geomembranes
September 25th, 2019
ASTM International has released a new standard, ASTM D8265-19 Standard Practices for Electrical Methods for Mapping Leaks in Installed Geomembranes. These practices describe standard procedures for using electrical methods to locate leaks in geomembranes covered with liquid or earthen materials, which can be watered to cause leakage through the geomembrane. For more information or to […]
GMA and IGS-NA to host webinar on leak detection sensitivity
April 5th, 2019
The Geosynthetic Materials Association (GMA) and IGS North America (IGS-NA) will sponsor a webinar, “Leak Detection Sensitivity — What Does It Mean?” on April 16, from 1 p.m. to 2 p.m. EDT. The ASTM standardized methodologies detail leak detection sensitivity testing for the various electrical leak location (ELL) methods. The term “sensitivity testing” is misleading, since […]
IGS-NA news
April 1st, 2018
The following are highlights of the many initiatives of IGS-NA over the last few months. IGS-NA supports Geosynthetics 2019 The North American Chapter of the International Geosynthetics Society (IGS-NA) is proud to support the Geosynthetics 2019 conference, which is organized by the Geosynthetic Materials Association, to be held Feb. 10–13, 2019, at the Marriott Marquis […]
IGS-NA hosts free electrical leak location webinar
November 17th, 2017
IGS North America (IGS-NA) presents the free webinar “Overview of Electrical Leak Location (ELL) Methods and Their Application” on Nov. 21, 2017, at 1:00 p.m. EST. All geomembrane-lined containment facilities should be tested for leaks before going into service. Early detection of leaks allows for swift and effective repair pre-service, protecting the engineer, contractor, owner […]
Readers question ‘zero leaks’
October 1st, 2017
To the editor: Efforts toward achieving zero leaks in a waste containment system (“Achieving Zero Leaks on a Budget” in the June/July issue of Geosynthetics) are certainly laudable. Authors Gilson-Beck and Toepfer do a good job of explaining how electrical leak detection surveys can minimize leaks in a geomembrane liner system at the end of […]
Achieving zero leaks on a budget with geomembranes
June 1st, 2017
For more than 30 years, the geomembrane industry has been told that “all geomembranes leak” (Giroud 1984), as if this were some foregone conclusion no matter what might happen from geomembrane manufacturing to the time it is put into service. But recently, the idea of “zero leaks” has been a hot topic at industry conferences, […]