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ASTM G9-07(2020)

(Test Method)

Standard Test Method for Water Penetration into Pipeline Coatings

Standard Test Method for Water Penetration into Pipeline Coatings

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.
SCOPE
1.1 This method covers the determination of the apparent rate of depth of water penetration into insulating coatings applied to pipe.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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.  
1.4 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.

General Information

Status
Published
Publication Date
31-Jul-2020
ICS
23.040.01 - Pipeline components and pipelines in general
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.48 - Durability of Pipeline Coating and Linings
Current Stage
Ref Project

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ASTM G9-07(2020) - Standard Test Method for Water Penetration into Pipeline CoatingsASTM G9-07(2020) - Standard Test Method for Water Penetration into Pipeline Coatings
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ASTM G9-07(2020) - Standard Test Method for Water Penetration into Pipeline Coatings
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Standards Content (Sample)

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.
Designation: G9 − 07 (Reapproved 2020)
Standard Test Method for
1
Water Penetration into Pipeline Coatings
This standard is issued under the fixed designation G9; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This method covers the determination of the apparent 4.1 The deterioration of an insulating coating film is inti-
rate of depth of water penetration into insulating coatings mately related to its moisture content. The water penetration
applied to pipe. test provides a means for monitoring the passage of moisture
throughacoatingmaterialbymeansofchangesinitsdielectric
1.2 The values stated in SI units are to be regarded as the
constant. When expressed in relation to time, the test data will
standard. The values given in parentheses are for information
reflect a rate of deterioration which is a characteristic of the
only.
coating material and will bear a relation to its expected useful
1.3 This standard does not purport to address all of the
life as an insulating coating. The test for water penetration will
safety concerns, if any, associated with its use. It is the
also provide information that is useful in establishing the
responsibility of the user of this standard to establish appro-
optimum coating thickness for a given material.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
5. Apparatus
1.4 This international standard was developed in accor-
5.1 Immersion Cell—Any suitable nonmetallic vessel to
dance with internationally recognized principles on standard-
contain the test specimens. Dimensions of the vessel shall
ization established in the Decision on Principles for the
permit the following requirements:
Development of International Standards, Guides and Recom-
5.1.1 Test specimens shall be suspended vertically with at
mendations issued by the World Trade Organization Technical
least 25 mm (1.0 in.) clearance from the sides and bottom.
Barriers to Trade (TBT) Committee.
5.1.2 Test specimens shall be separated by not less than 25
to 40 mm (1 to 1.5 in.) and a vertically suspended anode shall
2. Referenced Documents
beplacedatanequaldistancefromeachspecimennotlessthan
2
2.1 ASTM Standards:
the separation of distance.
G12 Test Method for Nondestructive Measurement of Film
5.1.3 The test vessel shall be deep enough to allow for
Thickness of Pipeline Coatings on Steel (Withdrawn
immersion of the samples in the electrolyte to the level
3
2013)
specified in 8.1.
NOTE 1—Commercially available, glass battery jars in 2-L (0.55-gal)
3. Summary of Test Method
and 10-L (2.7-gal) sizes can be conveniently used with 19-mm (0.75-in.)
3.1 The method consists of an immersion-type test where
and 51-mm (2.0-in. nominal) diameter specimens, respectively.
pipe specimens are suspended in an aqueous electrolyte for the
5.1.4 A suitable sample support plate fabricated from a
duration of the test period. Electrical measurements of coating
material having a low dielectric constant shall be used to
capacitance and dissipation factor are used to follow the water
suspend the samples and anode above the immersion cell. The
absorption rate of the test materials.
support plate shall contain an access hole for the reference
electrode. A typical test cell is illustrated in Fig. 1.
5.2 Electrolyte, consisting of tap water with the addition of
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
1 weight % of each of the following technical-grade anhydrous
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.48 on Durability of Pipeline Coating and Linings. salts: sodium chloride, sodium sulfate, and sodium carbonate.
Current edition approved Aug. 1, 2020. Published August 2020. Originally
ɛ1
NOTE 2—Add 10 g of each for each litre (0.26 gal) of water.
approvedin1969.Lastpreviouseditionapprovedin2013asG9 – 07(2013) .DOI:
10.1520/G0009-07R20.
5.2.1 The electrolyte in the immersion cell shall be main-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tained at the proper level by regular additions of tap water.The
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on electrolyte shall not be reused after completion of the test.
the ASTM website.
3
5.3 Voltage Source—Adirect c
...

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