ASTM-D4787 2008
$35.75
D4787-08 Standard Practice for Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates
Published By | Publication Date | Number of Pages |
ASTM | 2008 | 4 |
1.1 This practice covers procedures that may be used to allow the detection of discontinuities in nonconductive linings or other non-conductive coatings applied to concrete substrates.
1.2 Discontinuities may include pinholes, internal voids, holidays, cracks, and conductive inclusions.
1.3 This practice describes detection of discontinuities utilizing a high voltage spark tester using either pulsed or continuous dc voltage.
Note 1For further information on discontinuity testing refer to NACE Standard RP0188-88 or Practice D 5162 .
1.4 This practice describes procedures both with and without the use of a conductive underlayment.
1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.6 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. For a specific hazard statement, see Section 7.
PDF Catalog
PDF Pages | PDF Title |
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1 | Scope Referenced Documents Terminology |
2 | Summary of Practice Significance and Use TABLE 1 |
3 | Apparatus Hazards Conductive Underlayments |
4 | Verifying Operation of High Voltage Testers Adjustment of High-Voltage Spark Tester for Verifying Conductivity of Underlayment Adjustment of High Voltage Spark Tester for Verifying Conductivity of the Applied Lining Procedure for Using High Voltage Spark Tester Testing for Verifying Continuity of Applied Lining Keywords |