ASTM F2330-04

Standard Test Method for Evaluating the Oxidative Resistance of Multilayer Polyolefin Tubing to Hot Chlorinated Water (Withdrawn 2010)

SIGNIFICANCE AND USE
Environment or oxidative time-to-zero OIT data derived from this test method, analyzed in accordance with Section 13, shall be suitable for extrapolation to typical end-use temperatures and time. The extrapolated value(s) provides a relative indication of the resistance of the tested multilayer tubing or system to the oxidative effects of hot, chlorinated water for conditions equivalent to those conditions under which the test data were obtained. The performance of a material or piping product under actual conditions of installation and use is dependent upon a number of factors including installation methods, use patterns, water quality, nature and magnitude of localized stresses, and other variables of an actual, operating hot-and-cold water distribution system that are not addressed in this test method. As such, the extrapolated values do not constitute a representation that a multilayer tube or system with a given extrapolated time-to-zero OIT value sahll perform for that period of time under actual use conditions.
Note 3—the extrapolated value of the oxidative induction time-to-zero OIT data provides a conservative estimate of the life of the multi-layer tube.
SCOPE
1.1 This test method describes the general requirements for evaluating the long-term, chlorinated water, oxidative resistance of multilayer tubing which includes an inner layer of a polyolefin material such as PE or PEX (for example, see Specification F 1986 or F 1281). This test method outlines the requirements of a pressurized flow-through test system, test pressure, 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 the most common system in use today. Disinfecting systems other than chlorine have not been evaluated by this method.
1.2 This test method is valid for polyolefin materials that are stabilized with hindered phenolic type anti-oxidants that shall be analyzed using the Oxidative Induction Time (OIT) method (for example, D 3895).
1.3 Guidelines and requirements for test temperatures, test hoop stresses, and other test criteria shall be stablished by prior testing of multilayer tubing and solid-wall PEX and PE tubing. Other related system components that typically appear in a multilayer tubing hot-and-cold water distribution system shall be evaluated with the multilayer tubing. When testing multilayer 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 affect 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), cross-linked polyethylene (PEX), and multilayer (polymer-metal composite) pipes.
1.4 This test method is applicable to multilayer 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.
1.5 The values stated in cm-gram units are to be regarded as the standard. The values given in parentheses are for information purposes.
1.6 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 p...

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-2003
• Withdrawal Date: 31-Jan-2010
• ICS: 23.040.20 - Plastics pipes
• Technical Committee: F17 - Plastic Piping Systems
• Drafting Committee: F17.40 - Test Methods

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: F2330 – 04
Standard Test Method for
Evaluating the Oxidative Resistance of Multilayer Polyolefin
1
Tubing to Hot Chlorinated Water
This standard is issued under the fixed designation F2330; 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 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-
1.5 The values stated in cm-gram units are to be regarded as
tance of multilayer tubing which includes an inner layer of a
the standard. The values given in parentheses are for informa-
polyolefin material such as PE or PEX (for example, see
tion purposes.
Specification F1986 or F1281). This test method outlines the
1.6 The following precautionary caveat pertains only to the
requirements of a pressurized flow-through test system, test
test method portion, Section 12, of this specification. This
pressure, test-fluid characteristics, failure type, and data analy-
standard does not purport to address all of the safety concerns,
sis.
if any, associated with its use. It is the responsibility of the user
NOTE 1—Other known disinfecting systems (chlorine dioxide, ozone,
of this standard to establish appropriate safety and health
and chloramine) are currently used for protection of potable water;
practices and determine the applicability of regulatory limita-
however, free-chlorine is the most common system in use today. Disin-
tions prior to use.
fecting systems other than chlorine have not been evaluated by this
method.
2. Referenced Documents
1.2 Thistestmethodisvalidforpolyolefinmaterialsthatare
2
2.1 ASTM Standards:
stabilized with hindered phenolic type anti-oxidants that shall
D1600 Terminology for Abbreviated Terms Relating to
be analyzed using the Oxidative Induction Time (OIT) method
Plastics
(for example, D3895).
D2122 Test Method for Determining Dimensions of Ther-
1.3 Guidelines and requirements for test temperatures, test
moplastic Pipe and Fittings
hoop stresses, and other test criteria shall be stablished by prior
E177 Practice for Use of the Terms Precision and Bias in
testing of multilayer tubing and solid-wall PEX and PE tubing.
ASTM Test Methods
Other related system components that typically appear in a
F412 Terminology Relating to Plastic Piping Systems
multilayer tubing hot-and-cold water distribution system shall
be evaluated with the multilayer tubing. When testing multi-
3. Terminology
layertubingandfittingsasasystem,itisrecommendedthatthe
3.1 Definitions—Definitions are in accordance with Termi-
anticipated end-use fitting type(s) and material(s) be included
nology F412 and abbreviations shall be accordance with
in the test circuit since it is known that some fitting types and
Terminology D1600, unless otherwise indicated.
materials can affect failure times. Specimens used shall be
3.1.1 ductile failure (Stage I), n—failure in the tubing wall
representative of the piping product(s) and material(s) under
that is characterized by obvious localized deformation of the
investigation.
materialvisiblewiththeunaidedeye.Ductilefailuresproduced
NOTE 2—The procedures described in this test method (with some with this test method shall not be used for data analysis.
modifications of test temperatures or stresses, or both) have been used to
3.1.2 brittle failure (Stage II), n—failure in the tubing wall
evaluate pipes manufactured from polybutylene (PB), polyethylene (PE),
that is characterized by little or no material deformation in the
polypropylene (PP), cross-linked polyethylene (PEX), and multilayer
failure area and is the result of a single crack emanating from
(polymer-metal composite) pipes.
the interior of the tubing to the outside surface typically
1.4 This test method is applicable to multilayer tubing and
resulting in a pinhole leak. Brittle failures produced with this
systems used for transport of potable water containing free-
test method shall not be used for data analysis.
1
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
2
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Methods. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved Jan. 1, 2004. Published February 2004. DOI: 10.1520/ Standards volume information, refer to the standard’s D
...