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ASTM G13/G13M-13

(Test Method)

Standard Test Method for Impact Resistance of Pipeline Coatings (Limestone Drop Test)

Standard Test Method for Impact Resistance of Pipeline Coatings (Limestone Drop Test)

SIGNIFICANCE AND USE
4.1 This test method is intended to simulate the effects of backfilling after pipe has been placed in the trench. The backfill is often rocky soil and, if it is unscreened and the coated pipe is unshielded by sand or other protective padding, the falling rocks may seriously damage the coating.
SCOPE
1.1 This test method covers the determination of the relative resistance of pipeline coatings to impact by observing the effects of falling stones on coated pipe specimens.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Oct-2013
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
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ASTM G13/G13M-13 - Standard Test Method for Impact Resistance of Pipeline Coatings (Limestone Drop Test)ASTM G13/G13M-13 - Standard Test Method for Impact Resistance of Pipeline Coatings (Limestone Drop Test)
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ASTM G13/G13M-13 - Standard Test Method for Impact Resistance of Pipeline Coatings (Limestone Drop Test)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: G13/G13M − 13
Standard Test Method for
Impact Resistance of Pipeline Coatings
1
(Limestone Drop Test)
This standard is issued under the fixed designation G13/G13M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Test Method
3.1 The impact resistance of pipeline coatings is determined
1.1 This test method covers the determination of the relative
resistance of pipeline coatings to impact by observing the by dropping weighed amounts of a specified type of limestone
through a chute onto a coated pipe specimen. Results are
effects of falling stones on coated pipe specimens.
reported as the number of drops required to pierce through the
1.2 The values stated in either SI units or inch-pound units
coating to bare metal, as determined visually or electrically.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4. Significance and Use
system shall be used independently of the other. Combining
4.1 This test method is intended to simulate the effects of
values from the two systems may result in non-conformance
backfillingafterpipehasbeenplacedinthetrench.Thebackfill
with the standard.
is often rocky soil and, if it is unscreened and the coated pipe
1.3 This standard does not purport to address all of the
is unshielded by sand or other protective padding, the falling
safety concerns, if any, associated with its use. It is the
rocks may seriously damage the coating.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Apparatus
bility of regulatory limitations prior to use.
5.1 The impact apparatus shall be essentially as shown in
Fig. 1 and shall include the following:
2. Referenced Documents
5.1.1 BoxwithChute, providing a means of dropping stones
2
2.1 ASTM Standards:
from a height of 1830 mm [6.0 ft] measured to the top of a
G12 Test Method for Nondestructive Measurement of Film
piece of coated pipe under test. Construction details are shown
Thickness of Pipeline Coatings on Steel (Withdrawn
in Fig. 2.
3
2013)
NOTE 1—The box and chute described in Fig. 2 are designed for testing
G62 Test Methods for Holiday Detection in Pipeline Coat-
coatings on 100-mm [4-in.] and 150-mm [6-in.] pipe specimens. Smaller
ings
diameter pipe may be used by inserting woodV-blocks in the trough in the
4
box below the chute.
2.2 AASHTO Standard:
M80–51 (No. 67) Specification for Coarse Aggregate for 5.1.2 Stones, hard, coarse, limestone aggregate, conforming
Portland Cement Concrete to AASHTO Designation: M80-51 (No. 67) which is taken
from America Association of State Highway and Transporta-
tion Officials “Standard Specifications for Coarse Aggregate
for Portland Cement Concrete.”
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
NOTE 2—These specifications cover the quality and size of coarse
Subcommittee D01.48 on Durability of Pipeline Coating and Linings.
3
aggregate. No. 67 designates a 19-mm [ ⁄4-in.] to No. 4 size stone with the
Current edition approved Nov. 1, 2013. Published November 2013. Originally
following sieve analysis:
ε1
approved in 1989. Last previous edition approved in 1996 as G13 – 89 (1996)
Square Opening, Weight % Passing
which was withdrawn December 2003 and reinstated in November 2013. DOI:
mm [in.]
10.1520G0013_G0013M-13.
2 25 [1] 100
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
19 [ ⁄4] 95to100
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
10 [ ⁄8] 20to55
Standards volume information, refer to the standard’s Document Summary page on
No. 4 0 to 10
the ASTM website.
3
The last approved version of this historical standard is referenced on
5.1.3 Bucket—Any suitable bucket that will hold 16 kg [35
www.astm.org.
lb] of stones.
4
Available from American Association of State Highway and Transportation
5.1.4 Holiday Detectors—Two types are needed as de-
Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
http://www.transportation.org. scribed in Test Methods G62.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
G13/G13M − 13
NOTE 1—Framing lumber 40 by 90 mm [2 by 4 in.]; all other material
3
20 mm [ ⁄4 in.].
FIG. 2 Construction Details of Box and Chute
FIG. 1 Box, Chute, and Bucket
NOTE 3—A holiday is defined as small fa
...

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