ASTM D7240-18
Standard Practice for Electrical Leak Location Using Geomembranes with an Insulating Layer in Intimate Contact with a Conductive Layer via Electrical Capacitance Technique (Conductive-Backed Geomembra

Standard No.

ASTM D7240-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D7240-18

Scope

1.1 This practice is a performance-based standard for an electrical method for locating leaks in exposed conductivebacked geomembranes. For clarity, this practice uses the term “leak” to mean holes, punctures, tears, knife cuts, seam defects, cracks, and similar breaches in an installed geomembrane (as defined in 3.2.7). 1.2 This practice can be used for conductive-backed geomembranes installed in basins, ponds, tanks, ore and waste pads, landfill cells, landfill caps, canals, and other containment facilities. It is applicable for conductive-backed geomembranes made of materials such as polyethylene, polypropylene, polyvinyl chloride, chlorosulfonated polyethylene, bituminous geomembrane, and any other electrically insulating materials. This practice is best applicable for locating conductive-backed geomembrane leaks where the proper preparations have been made during the construction of the facility. 1.3 For electrical leak location of conductive-backed geomembranes using methods in lieu of or in addition to the spark testing method, the installation must be electrically isolated (as defined in 3.2.5). 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 The spark test may produce an electrical spark and therefore should only be used where an electrical spark would not create a hazard. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D7240-18 Referenced Document

• ASTM D4439 Standard Terminology for Geosynthetics*， 2024-02-01 Update
• ASTM D5641/D5641M Standard Practice for Geomembrane Seam Evaluation by Vacuum Chamber*， 2024-04-21 Update
• ASTM D5820 Standard Practice for Pressurized Air Channel Evaluation of Dual-Seamed Geomembranes*， 2023-11-01 Update
• ASTM D6747 Standard Guide for Selection of Techniques for Electrical Leak Location of Leaks in Geomembranes*， 2021-08-01 Update

ASTM D7240-18 history

• 2018 ASTM D7240-18 Standard Practice for Electrical Leak Location Using Geomembranes with an Insulating Layer in Intimate Contact with a Conductive Layer via Electrical Capacitance Technique (Conductive-Backed Geomembra
• 2006 ASTM D7240-06(2011) Standard Practice for Leak Location using Geomembranes with an Insulating Layer in Intimate Contact with a Conductive Layer via Electrical Capacitance Technique (Conductive Geomembrane Spark Test)
• 2006 ASTM D7240-06 Standard Practice for Leak Location using Geomembranes with an Insulating Layer in Intimate Contact with a Conductive Layer via Electrical Capacitance Technique (Conductive Geomembrane Spark Test)