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ASTM G14-88(1996)e1

(Test Method)

Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)

Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)

SCOPE
1.1 This test method covers the determination of the energy required to rupture coatings applied to pipe under specified conditions of impact from a falling weight.  
1.2 This test method may involve hazardous operations and equipment. This test method does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this test method to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  
1.3 The values stated in SI units to three significant decimals are to be regarded as the standard.

General Information

Status
Historical
Publication Date
09-May-1996
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

Replaced By
ASTM G14-04 - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
Effective Date
01-Nov-2004
Referred By
ASTM A882/A882M-20 - Standard Specification for Filled Epoxy-Coated Seven-Wire Steel Prestressing Strand
Effective Date
10-May-1996
Referred By
ASTM A1055/A1055M-22 - Standard Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
Effective Date
10-May-1996
Referred By
ASTM A934/A934M-22 - Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
Effective Date
10-May-1996
Referred By
ASTM G74-13(2021) - Standard Test Method for Ignition Sensitivity of Nonmetallic Materials and Components by Gaseous Fluid Impact
Effective Date
10-May-1996
Referred By
ASTM F2896-23 - Standard Specification for Reinforced Polyethylene Composite Pipe For The Transport Of Oil And Gas And Hazardous Liquids
Effective Date
10-May-1996
Referred By
ASTM A1124/A1124M-23 - Standard Specification for Textured Epoxy-Coated Steel Reinforcing Bars
Effective Date
10-May-1996
Referred By
ASTM D7230-06(2021) - Standard Guide for Evaluating Polymeric Lining Systems for Water Immersion in Coating Service Level III Safety-Related Applications on Metal Substrates
Effective Date
10-May-1996
Referred By
ASTM A950/A950M-11(2023) - Standard Specification for Fusion-Bonded Epoxy-Coated Structural Steel H-Piles and Sheet Piling
Effective Date
10-May-1996
Referred By
ASTM D8104-17(2023) - Standard Guide for Determining Coating Qualification Test Data Applicability
Effective Date
10-May-1996
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
10-May-1996
Referred By
ASTM G11-19 - Standard Practice for Effects of Outdoor Weathering on Pipeline Coatings
Effective Date
10-May-1996
Referred By
ASTM A972/A972M-00(2021) - Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles
Effective Date
10-May-1996
Referred By
ASTM A775/A775M-22 - Standard Specification for Epoxy-Coated Steel Reinforcing Bars
Effective Date
10-May-1996

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ASTM G14-88(1996)e1 - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)ASTM G14-88(1996)e1 - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
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ASTM G14-88(1996)e1 - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
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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
e1
Designation:G14–88(Reapproved1996)
Standard Test Method for
Impact Resistance of Pipeline Coatings (Falling Weight
Test)
ThisstandardisissuedunderthefixeddesignationG 14;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Keywords were added editorially in June 1996.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the energy 4.1 The ability of a pipe coating to resist mechanical
required to rupture coatings applied to pipe under specified damage during shipping, handling, and installation will depend
conditions of impact from a falling weight. upon its impact resistance. This test method provides a
1.2 This standard does not purport to address all of the systematic means for screening coating materials with regard
safety concerns, if any, associated with its use. It is the to this property.
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
5.1 This test method can be successfully used with impact
bility of regulatory limitations prior to use.
1.3 The values stated in SI units to three significant deci- apparatus conforming to the following specifications:
5.1.1 Tup—The tup shall be made up from a tup body and
mals are to be regarded as the standard. The values given in
parentheses are for information only. a tup nose having a combined, fixed weight of 1.361 kg (3.00
lb) and shall be used over a drop range of 0.61 to 1.22 m (2 to
2. Referenced Documents
4 ft). With most coatings, a 1.361-kg (3.00-lb) tup dropped
2.1 ASTM Standards: through a distance of 914 mm (3 ft) yields suitable results. The
G12 Test Method for Nondestructive Measurement of Film tup nose shall have a 15.875-mm ( ⁄8-in.) hemispherical head.
Thickness of Pipeline Coatings on Steel
NOTE 1—Frequent replacement of the tup nose can be avoided if it is
G62 Test Methods for Holiday Detection in Pipeline Coat-
cut from steel capable of being hardened to a hardness of Rockwell C/45
ings
while retaining an impact toughness of at least 15 ft·lb (20.34 J). Ball
2.2 SAE Standard:
bearings conforming to SAE Grade 52100 have also been found suitable
for this purpose.
Grade 52100 Steel
5.1.2 Drop Tube—Atube 1.52 m (5 ft) long shall be used to
3. Summary of Test Method
containthetupandguideitduringfreefall.Thedroptubeshall
3.1 This test method uses a falling fixed weight having a
be constructed of steel, aluminum, or any other suitably rigid
specified diameter impact surface, tup, which is restrained
material and internally sized to provide a minimum of friction
vertically and dropped from varying heights to produce impact
to the falling tup. A scale shall be attached for measuring the
energies over the required range. Electrical inspection is used
height of drop to the nearest 2.54 mm (0.10 in.).
to detect resultant breaks in the coating. Impact resistance is
5.1.3 Specimen Holder—The base plate of the apparatus
determined as the amount of energy required to cause penetra-
shall include a device for positioning and holding the pipe
tion of the coating film.
specimen on line with the axis of the vertical drop tube.
NOTE 2—An arrangement using a V-notch vise made of metal with
This test method is under the jurisdiction of ASTM Committee D-1 on Paint
springclampisrecommendedforthispurpose.Glancingblows,causedby
and Related Coatings, Materials, andApplications and is the direct responsibility of
an out-of-plumb condition between drop tube and pipe sample, will cause
Subcommittee D01.48 on Durability of Pipeline Coatings and Linings.
erratic test results.
Current edition approved May 27, 1988. Published July 1988. Originally
published as G 14 – 69 T. Last previous edition G 14 – 83.
5.1.4 Apparatus Support—Both the apparatus and sample
Annual Book of ASTM Standards, Vol 06.02.
shall be firmly supported and secured to a rigid base to
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
optimize energy transfer from the tup to the specimen.
Warrendale, PA 15096.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
e1
G14–88 (1996)
5.2 A design for the test apparatus appears in Figs. X1.1- 9.3 Use a suitable detector, as specified in Test Method G 6,
X1.3 of Appendix X1. to determine penetration or lack thereof of the coating after
5.3 Thickness Gage—Measurements of coating thickness each individual impact.
will be required for this test, and shall be done in accordance 9.4 If the coating film is penetrated on the initial drop, make
with MethodG12. the next test at the next lower height increment. If the first
5.4 Holiday Detector—A suitable detector as specified in specimen does not fail, make the second test at the next higher
increment.
Test MethodsG62 shall be used to locate breaks in the coating
film. 9.5 In a similar manner, determine the height of fall by the
performance of the coating on each preceding drop. Maintain a
6. Test Specimen constant height increment between readings. Continue to apply
this “up-and-down” method until 20 successive impact read-
6.1 The test specimen shall be a 406.4 mm (16 in.) long
ings have been made.
piece of Schedule 40, 60.325 mm (2.375 in.) outside diameter
coated pipe prepared with its surface preparation and coating
10. Calculation
procedures equivalent to that of production coated pipe.
10.1 Calculate the mean value of impact strength, m,in
6.2 Seven specimens shall be required for the test.
g/cm (or in./lb) as follows:
7. Conditioning
A 1
m 5 h 1 d 6 3 W (1)
F 0 S DG
N 2
7.1 The specimen shall be exposed to a room temperature of
21 to 25°C (70 to 77°F) for a period of 24 h before beginning
where:
the test.
h = minimum height at which the less frequent event
occurs, cm (or in.),
8. Preliminary Measurements
d = increment in height of drop, cm (or in.),
A = sum of the frequency of occurrence at each height
8.1 Measure the applied coating thickness of each specimen
increment times the number of increments above the
in accordance with Test MethodG12.
h value for each observation in the N total,
8.2 Place test specimen in sample holder and lightly pla
...

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1.1 This test method covers a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such deformation.  
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1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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