ASTM F1589-95

Standard Test Method for Determination of the Critical Pressure for Rapid Crack Propagation in Plastic Pipe

SCOPE
1.1 This test method determines the minimum internal air pressure at which rapid crack propagation (RCP) can be sustained along a section of plastic pipe. This is termed the critical pressure.
1.2 This technique achieves steady state RCP in a small specimen by restraining the decompression which normally accompanies fracture, and therefore indicates a lower critical pressure than that measured on the same pipe using full-scale tests. This test method has been called "Small Scale Steady State" or S4.
1.3 This test method was developed for polyethylene pipe, and has been shown to correlate with the full-scale RCP test method. The user should determine if it is applicable to other plastic piping methods.
1.4 The values stated in inch-pound units are to be regarded as the standard.
1.5 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: 14-Mar-1995
• Technical Committee: F17 - Plastic Piping Systems
• Drafting Committee: F17.40 - Test Methods

Relations

• Replaced By: ASTM F1589-95(2001) - Standard Test Method for Determination of the Critical Pressure for Rapid Crack Propagation in Plastic Pipe (Withdrawn 2003)
• Effective Date: 15-Mar-1995

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: F 1589 – 95 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Determination of the Critical Pressure for Rapid Crack
1
Propagation in Plastic Pipe
This standard is issued under the fixed designation F 1589; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 axial pitch—the center to center distance of the
retaining rings that surround the outside diameter.
1.1 This test method determines the minimum internal air
3.1.2 baffle pitch—center to center distance of baffles.
pressure at which rapid crack propagation (RCP) can be
sustained along a section of plastic pipe. This is termed the 3.1.3 chisel-ended striker—the knife-edged projectile
critical pressure. (striker) that is used to initiate crack.
1.2 This technique achieves steady state RCP in a small
3.1.4 gage length—nominally 7D less initiation section and
specimen by restraining the decompression which normally
sealing sections; at least 4.5D.
accompanies fracture, and therefore indicates a lower critical
3.2 Symbols—The following symbols are used in this test
pressure than that measured on the same pipe using full-scale
method for outside diameter controlled pressure pipe:
tests. This test method has been called “Small Scale Steady
3.2.1 a—axial crack length into the gage length of the pipe
State” or S4.
test piece.
1.3 This test method was developed for polyethylene pipe,
3.2.2 D—minimum outside diameter of pipe, which is the
and has been shown to correlate with the full-scale RCP test
average outside diameter less the minus tolerance.
method. The user should determine if it is applicable to other
3.2.3 p—internal pressure within the gage length of the pipe
plastic piping methods.
test piece.
1.4 The values stated in inch-pound units are to be regarded
3.2.4 PcS4—critical pressure for rapid crack propagation,
as the standard.
measured using the S4 method.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.2.5 d —minimum inside diameter of pipe, calculated as
min
responsibility of the user of this standard to establish appro-
follows:
priate safety and health practices and determine the applica-
2.24
d 5 D 1 2
bility of regulatory limitations prior to use. F G
min
SDR
3.3 Other abbreviations are in accordance with Terminology
2. Referenced Documents
D 1600.
2.1 ASTM Standards:
D 1600 Terminology for Abbreviated Terms Relating to
2 4. Significance and Use
Plastics
D 2122 Test Method for Determining Dimensions of Ther-
4.1 A specified length of pipe, subject to constant internal
3
moplastic Pipe and Fittings
air pressure, is penetrated near one end by a chisel-ended
3
F 412 Terminology Relating to Plastic Piping Systems
striker to result in a fast-running axial crack, under conditions
2.2 ISO Standard:
where the crack initiation process itself disturbs the pipe as
4
ISO 3126 Plastic pipes—Measurement of dimensions
little as possible.
4.2 A series of tests at various measured pressures is used to
3. Terminology
identify the critical pressure, at which there is a sharp transition
3.1 Definitions—Definitions are in accordance with Termi-
from abrupt arrest of this initial crack to continued steady
nology F 412, unless otherwise specified.
propagation. The crack is said to propagate if the crack length
a is greater than 4D. The critical pressure, P ,isthe
cS4
maximum arrest pressure below the lowest propagation
1
This test method is under the jurisdiction of ASTM Committee F-17 on Plastic
pressure. Rapid decompression due to propagation of the crack
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test
is retarded by internal baffles and by an external cage which
Methods.
Current edition approved March 15, 1995. Published May 1995.
restricts flaring of the pipe at the edges of the fracture. The
2
Annual Book of ASTM Standards, Vol 08.01.
RCP critical pressure becomes more significant for plastic pipe
3
Annual Book of ASTM Standards, Vol 08.04.
4
as the pipe size increases or the internal pressure increases, or
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036. both.
1

---------------------- Page: 1 ----------------------
F 1589
5. Apparatus minimum of 16 h in a gaseous medium.
5.1 The apparatus should generally conform with Fig. 1.
NOTE 1—The normal test temperature of 32°F (0°C) will usually be
5.2 The containment cage shall
...