ASTM D6365-99

    Standard Practice for the Nondestructive Testing of Geomembrane Seams using the Spark Test


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    1. Scope

    1.1 This practice describes the nondestructive testing of field seams in geomembranes using the spark test. A suspect area is indicated by the generation of a spark. The test is applicable to seams made by the extrusion method, seams made by using welding tape (a strip of the same type of material as the geomembrane, that is welded over adjacent sections of geomembrane to create a seam), or seams where it is practical to insert a conductive material in the seam just prior to or during fabrication.

    1.2 The spark test may produce an electrical spark and therefore can only be used where an electrical spark would not create a hazard.

    1.3 Unless the voltages and distances prescribed are carefully adhered to, a "false positive" indication may result. This false positive occurs when the arc distance is too large for the voltage applied at the time and conditions of testing.

    1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D4439 Terminology for Geosynthetics

    D4491 Test Methods for Water Permeability of Geotextiles by Permittivity


    ICS Code

    ICS Number Code 19.100 (Non-destructive testing); 83.140.10 (Films and sheets)

    UNSPSC Code

    UNSPSC Code 30121702(Geotextile)


    Referencing This Standard

    DOI: 10.1520/D6365-99

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM D6365-99, Standard Practice for the Nondestructive Testing of Geomembrane Seams using the Spark Test, ASTM International, West Conshohocken, PA, 1999, www.astm.org

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