Active Standard ASTM G9 | Developed by Subcommittee: D01.48
Book of Standards Volume: 06.02
Historical (view previous versions of standard)
Significance and Use
4.1 The deterioration of an insulating coating film is intimately related to its moisture content. The water penetration test provides a means for monitoring the passage of moisture through a coating material by means of changes in its dielectric constant. When expressed in relation to time, the test data will reflect a rate of deterioration which is a characteristic of the coating material and will bear a relation to its expected useful life as an insulating coating. The test for water penetration will also provide information that is useful in establishing the optimum coating thickness for a given material.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
G12 Test Method for Nondestructive Measurement of Film Thickness of Pipeline Coatings on Steel
ICS Number Code 23.040.01 (Pipeline components in general. Pipelines)