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ASTM G19-04

(Test Method)

Standard Test Method for Disbonding Characteristics of Pipeline Coatings by Direct Soil Burial (Withdrawn 2010)

Standard Test Method for Disbonding Characteristics of Pipeline Coatings by Direct Soil Burial (Withdrawn 2010)

SIGNIFICANCE AND USE
Coated pipe is seldom, if ever, buried without some damage to the coating. Hence, an actual soil-burial test can contribute significant data, provided the method of testing is controlled and the test specimen monitored and the relationship between the area disbonded, the current demand, and the mode of failure is fully understood.
Means are provided for measuring and following the electrical potential and current flow and relating these data to the final measurement of disbonded area.
SCOPE
1.1 This test method describes the determination of the relative disbonding characteristics of damaged coatings on steel pipe by cathodic protection potentials in direct soil burial. This test method is intended to apply to the testing of all types of nonmetallic pipeline coatings and tapes including thermoplastics, thermoset, and bituminous materials.
1.2 Results may vary widely when test sites are in different geographical areas of the country, and even in different localities.
1.3 This test method is limited to nonconducting, or nonmetallic pipe coatings and is not applicable to conducting materials such as zinc coatings on steel pipe.
1.4 The values stated in SI units to three significant decimals are to be regarded as the standard. The values given in parentheses are for information only.
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.
WITHDRAWN RATIONALE
This test method describes the determination of the relative disbonding characteristics of damaged coatings on steel pipe by cathodic protection potentials in direct soil burial. This test method is intended to apply to the testing of all types of nonmetallic pipeline coatings and tapes including thermoplastics, thermoset, and bituminous materials.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications this test method was withdrawn in June 2010. This standard is being withdrawn without replacement due to its limited use by industry.

General Information

Status
Withdrawn
Publication Date
31-Oct-2004
Withdrawal Date
31-May-2010
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.48 - Durability of Pipeline Coating and Linings
Current Stage
Ref Project

Relations

Replaces
ASTM G19-88(1996)e1 - Standard Test Method for Disbonding Characteristics of Pipeline Coatings by Direct Soil Burial
Effective Date
01-Nov-2004

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ASTM G19-04 - Standard Test Method for Disbonding Characteristics of Pipeline Coatings by Direct Soil Burial (Withdrawn 2010)ASTM G19-04 - Standard Test Method for Disbonding Characteristics of Pipeline Coatings by Direct Soil Burial (Withdrawn 2010)
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ASTM G19-04 - Standard Test Method for Disbonding Characteristics of Pipeline Coatings by Direct Soil Burial (Withdrawn 2010)
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:G19–04
Standard Test Method for
Disbonding Characteristics of Pipeline Coatings by Direct
1
Soil Burial
ThisstandardisissuedunderthefixeddesignationG19;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope are buried in soil at an outdoor site and electrically connected
to a magnesium anode. After test, the disbonded coating is
1.1 This test method describes the determination of the
removed, the exposed area measured, and comparisons are
relative disbonding characteristics of damaged coatings on
made to other specimens similarly exposed.
steelpipebycathodicprotectionpotentialsindirectsoilburial.
This test method is intended to apply to the testing of all types
4. Significance and Use
of nonmetallic pipeline coatings and tapes including thermo-
4.1 Coated pipe is seldom, if ever, buried without some
plastics, thermoset, and bituminous materials.
damage to the coating. Hence, an actual soil-burial test can
1.2 Results may vary widely when test sites are in different
contribute significant data, provided the method of testing is
geographical areas of the country, and even in different
controlledandthetestspecimenmonitoredandtherelationship
localities.
betweentheareadisbonded,thecurrentdemand,andthemode
1.3 This test method is limited to nonconducting, or non-
of failure is fully understood.
metallic pipe coatings and is not applicable to conducting
4.2 Means are provided for measuring and following the
materials such as zinc coatings on steel pipe.
electrical potential and current flow and relating these data to
1.4 The values stated in SI units to three significant deci-
the final measurement of disbonded area.
mals are to be regarded as the standard. The values given in
parentheses are for information only.
5. Apparatus
1.5 This standard does not purport to address all of the
5.1 Anode—A standard packaged magnesium anode, mini-
safety concerns, if any, associated with its use. It is the
mum4.082kg(9lb),withafactory-sealed,4107cmil(14gage
responsibility of the user of this standard to establish appro-
Awg)minimum,insulatedcopperwireshallbeused.Asolution
priate safety and health practices and determine the applica-
potential of not less than−1.45 V with respect to a copper-
bility of regulatory limitations prior to use.
copper sulfate reference electrode is required. Use sufficient
anodes to maintain required potential.
2. Referenced Documents
2 5.2 Connectors—The wiring circuit from anode to test
2.1 ASTM Standards:
specimen and from specimen to reference electrode should be
G12 Test Method for Nondestructive Measurement of Film
4107 cmil (14 gage Awg) minimum insulated copper wire.
Thickness of Pipeline Coatings on Steel
Attach the wires to the test specimen as shown in Fig. 1 by
G62 Test Methods for Holiday Detection in Pipeline Coat-
soldering or brazing at the air-exposed end, and coat the place
ings
of attachment with insulating material. A junction box is
3. Summary of Test Method optionalforconnectingtheresistorinseriesbetweentheanode
and the test specimen.
3.1 Apparatus and materials are described whereby protec-
5.3 The instruments used shall include the following:
tive coatings on steel pipe are subjected to disbonding by an
5.3.1 Voltmeter, a suitable instrument such as a high imped-
electrical stress. Specimens with intentionally damaged areas
ance (>10mV) analog multimeter having a sensitivity of
50 000V/ V minimum and a multiple range from 0.01 to 2 V
for direct current is used for measuring the potential between
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint 3
specimen and the reference electrode, current between speci-
and Related Coatings, Materials, andApplications and is the direct responsibility of
men and anode, and the resistance of the circuit. The same
Subcommittee D01.48 on Durability of Pipeline Coating and Linings.
Current edition approved Nov. 1, 2004. Published November 2004. Originally instrument shall be used for measuring current between speci-
´1
approved in 1971. Last previous edition approved in 1996 as G19–88(1996) .
men and anode. Alligator clips on the leads are permissible.
DOI: 10.1520/G0019-04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on A pipe-to-soil Voltmeter-Ammeter, Agra Engineering Co., Tulsa, Okla., has
the ASTM website. been found suitable for this test.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United S
...

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