Standard Practice for Discontinuity (Holiday) Testing of Nonconductive Protective Coating on Metallic Substrates
1.1 This practice covers procedures for determining discontinuities using two types of test equipment:
1.1.1 Test Method A--Low Voltage Wet Sponge, and
1.1.2 Test Method B--High Voltage Spark Testers.
1.2 This practice addresses metallic substrates. For concrete surfaces, refer to Practice D4787.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses immediately following inch-pound units are for information only.
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.
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