ASTM F2023-05
(Test Method)Standard Test Method for Evaluating the Oxidative Resistance of Crosslinked Polyethylene (PEX) Tubing and Systems to Hot Chlorinated Water
Standard Test Method for Evaluating the Oxidative Resistance of Crosslinked Polyethylene (PEX) Tubing and Systems to Hot Chlorinated Water
SCOPE
1.1 This test method describes the general requirements for evaluating the long-term, chlorinated water, oxidative resistance of cross-linked polyethylene (PEX) tubing produced in accordance with Specification F 876 or PEX tubing/fitting systems in accordance with Specification F 877 used in hot-and-cold water distribution systems by exposure to hot, chlorinated water. This test method outlines the requirements of a pressurized flow-through test system, typical test pressures, test-fluid characteristics, failure type, and data analysis.
Note 1—Other known disinfecting systems (chlorine dioxide, ozone, and chloramine) are currently used for protection of potable water; however, free-chlorine is by far the most common system in use today. Disinfecting systems other than chlorine have not been evaluated by this method.
1.2 Guidelines and requirements for test temperatures, test hoop stresses, and other test criteria have been established by prior testing of PEX tubing produced by the three most common commercial methods of cross-linking: silane, peroxide, and electron-beam (see Note 2). Other related system components that typically appear in a PEX hot-and-cold water distribution system can be evaluated with the PEX tubing. When testing PEX tubing and fittings as a system, it is recommended that the anticipated end-use fitting type(s) and material(s) be included in the test circuit since it is known that some fitting types and materials can impact failure times. Specimens used shall be representative of the piping product(s) and material(s) under investigation.
Note 2—The procedures described in this test method (with some modifications of test temperatures or stresses, or both) have been used to evaluate pipes manufactured from polybutylene (PB), polyethylene (PE), polypropylene (PP), multilayer (polymer-metal composite), copper, and stainless steel.
1.3 This test method is applicable to PEX tubing and systems used for transport of potable water containing free-chlorine for disinfecting purposes. The oxidizing potential of the test-fluid specified in this test method exceeds that typically found in potable water systems across the United States.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information purposes.
1.5 The following precautionary caveat pertains only to the test method portion, Section 12, of this specification.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
Relations
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
An American National Standard
Designation:F2023–05
Standard Test Method for
Evaluating the Oxidative Resistance of Crosslinked
Polyethylene (PEX) Tubing and Systems to Hot Chlorinated
1
Water
This standard is issued under the fixed designation F 2023; 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 chlorine for disinfecting purposes. The oxidizing potential of
thetest-fluidspecifiedinthistestmethodexceedsthattypically
1.1 This test method describes the general requirements for
found in potable water systems across the United States.
evaluating the long-term, chlorinated water, oxidative resis-
1.4 The values stated in inch-pound units are to be regarded
tance of cross-linked polyethylene (PEX) tubing produced in
as the standard. The values given in parentheses are for
accordance with Specification F 876 or PEX tubing/fitting
information purposes.
systems in accordance with Specification F 877 used in hot-
1.5 The following precautionary caveat pertains only to the
and-cold water distribution systems by exposure to hot, chlo-
test method portion, Section 12, of this specification. This
rinated water. This test method outlines the requirements of a
standard does not purport to address all of the safety concerns,
pressurized flow-through test system, typical test pressures,
if any, associated with its use. It is the responsibility of the user
test-fluid characteristics, failure type, and data analysis.
of this standard to establish appropriate safety and health
NOTE 1—Other known disinfecting systems (chlorine dioxide, ozone,
practices and determine the applicability of regulatory limita-
and chloramine) are currently used for protection of potable water;
tions prior to use.
however, free-chlorine is by far the most common system in use today.
Disinfecting systems other than chlorine have not been evaluated by this
2. Referenced Documents
method.
2
2.1 ASTM Standards:
1.2 Guidelines and requirements for test temperatures, test
D 1600 Terminology for Abbreviated Terms Relating to
hoop stresses, and other test criteria have been established by
Plastics
prior testing of PEX tubing produced by the three most
D 2122 Test Method for Determining Dimensions of Ther-
common commercial methods of cross-linking: silane, perox-
moplastic Pipe and Fittings
ide, and electron-beam (see Note 2). Other related system
F 412 Terminology Relating to Plastic Piping Systems
components that typically appear in a PEX hot-and-cold water
F 876 Specification for Crosslinked Polyethylene (PEX)
distribution system can be evaluated with the PEX tubing.
Tubing
When testing PEX tubing and fittings as a system, it is
F 877 Specification for Crosslinked Polyethylene (PEX)
recommended that the anticipated end-use fitting type(s) and
Plastic Hot- and Cold-Water Distribution Systems
material(s) be included in the test circuit since it is known that
F 948 Test Method for Time-to-Failure of Plastic Piping
some fitting types and materials can impact failure times.
Systems and Components Under Constant Internal Pres-
Specimensusedshallberepresentativeofthepipingproduct(s)
sure With Flow
and material(s) under investigation.
2.2 ISO Standards:
NOTE 2—The procedures described in this test method (with some ISO 9080 Thermoplastic Pipe for Transport of Fluids—
modifications of test temperatures or stresses, or both) have been used to
Methods of Extrapolation of Hydrostatic Stress Rupture
evaluate pipes manufactured from polybutylene (PB), polyethylene (PE),
Data to Determine the Long Term Strength of Thermo-
polypropylene (PP), multilayer (polymer-metal composite), copper, and
3
plastic Pipe
stainless steel.
ISO 13760 Plastic Pipe for the Conveyance of Fluids Under
1.3 This test method is applicable to PEX tubing and
Pressure—Miners Rule—Calculation Method for Cumu-
3
systems used for transport of potable water containing free-
lative Damage
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction of ASTM Committee F17 on Plastic contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test Standards volume information, refer to the standard’s Document Summary page on
Methods. the ASTM website.
3
Current edition approved Nov. 1, 2005. Published November 2005. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 2000. Last previous edition approved in 2004 as F 2023 – 04. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive,
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.