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ASTM F2929-17(2021)

(Specification)

Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psig

Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psig

ABSTRACT
This specification establishes the requirements for 0.070 in. wall thickness crosslinked polyethylene (PEX) tubing that is outside diameter controlled, and intended for non-potable radiant heating applications for pressures up to 75 psig. It covers requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, bent-tube hydrostatic pressure, environmental stress cracking, stabilizer functionality, excessive temperature and degree of crosslinking, as well as requirements for tubing markings.
SCOPE
1.1 This specification covers 0.070 in. wall thickness crosslinked polyethylene (PEX) tubing that is outside diameter controlled, and intended for non-potable radiant heating applications for pressures up to 75 psig in sizes 5/8 NTS (nominal tubing size) and 7/8 NTS. This specification also includes fittings that are specifically designed for this 0.070 in.-wall PEX tubing. Only maximum 75-psig relief valves shall be used with this tubing. Included in this specification are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, environmental stress cracking, stabilizer functionality, bent-tube hydrostatic pressure, excessive temperature and degree of crosslinking. Requirements for tubing markings are also given. This specification incorporates an optional middle or outer oxygen barrier layer. This tubing is not intended for field bending at temperatures above 120 ºF (49 ºC).  
1.2 The text of this specification references notes, footnotes, and appendixes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.  
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.  
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 7, 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Jul-2021
ICS
23.040.20 - Plastics pipes
23.040.45 - Plastics fittings
91.140.10 - Central heating systems
Technical Committee
F17 - Plastic Piping Systems
Drafting Committee
F17.61 - Water
Current Stage
Ref Project

Relations

Refers
ASTM F412-20 - Standard Terminology Relating to Plastic Piping Systems
Effective Date
01-Apr-2020

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ASTM F2929-17(2021) - Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psigASTM F2929-17(2021) - Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psig
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ASTM F2929-17(2021) - Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psig
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F2929 − 17 (Reapproved 2021) An American National Standard
Standard Specification for
Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and
1
Fittings for Radiant Heating Systems up to 75 psig
This standard is issued under the fixed designation F2929; 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* mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers 0.070 in. wall thickness cross-
linked polyethylene (PEX) tubing that is outside diameter
2. Referenced Documents
controlled, and intended for non-potable radiant heating appli-
2.1 ASTM Standards:
5
cations for pressures up to 75 psig in sizes ⁄8 NTS (nominal
A269/A269M Specification for Seamless and Welded Aus-
7
tubing size) and ⁄8 NTS. This specification also includes
tenitic Stainless Steel Tubing for General Service
fittings that are specifically designed for this 0.070 in.-wall
A276/A276M Specification for Stainless Steel Bars and
PEX tubing. Only maximum 75-psig relief valves shall be used
Shapes
with this tubing. Included in this specification are requirements
A312/A312M Specification for Seamless, Welded, and
and test methods for material, workmanship, dimensions, burst
Heavily Cold Worked Austenitic Stainless Steel Pipes
pressure, hydrostatic sustained pressure, environmental stress
B16/B16M Specification for Free-Cutting Brass Rod, Bar
cracking, stabilizer functionality, bent-tube hydrostatic
and Shapes for Use in Screw Machines
pressure, excessive temperature and degree of crosslinking.
B61 Specification for Steam or Valve Bronze Castings
Requirements for tubing markings are also given. This speci-
B62 Specification for Composition Bronze or Ounce Metal
fication incorporates an optional middle or outer oxygen barrier
Castings
layer. This tubing is not intended for field bending at tempera-
B140/B140M Specification for Copper-Zinc-Lead (Red
tures above 120 ºF (49 ºC).
Brass or Hardware Bronze) Rod, Bar, and Shapes
1.2 The text of this specification references notes, footnotes,
B283 Specification for Copper and Copper-Alloy Die Forg-
and appendixes, which provide explanatory material. These
ings (Hot-Pressed)
notes and footnotes (excluding those in tables and figures) shall
B371/B371M Specification for Copper-Zinc-Silicon Alloy
not be considered as requirements of the specification.
Rod
1.3 The values stated in inch-pound units are to be regarded B584 Specification for Copper Alloy Sand Castings for
as standard. The values given in parentheses are mathematical General Applications
conversions to SI units that are provided for information only B967/B967M Specification for Copper-Zinc-Tin-Bismuth
and are not considered standard. Alloy Rod, Bar and Wire
D618 Practice for Conditioning Plastics for Testing
1.4 The following safety hazards caveat pertains only to the
D792 Test Methods for Density and Specific Gravity (Rela-
test methods portion, Section 7, of this specification: This
tive Density) of Plastics by Displacement
standard does not purport to address all of the safety concerns,
D1505 Test Method for Density of Plastics by the Density-
if any, associated with its use. It is the responsibility of the user
Gradient Technique
of this standard to establish appropriate safety, health, and
D1598 Test Method for Time-to-Failure of Plastic Pipe
environmental practices and determine the applicability of
Under Constant Internal Pressure
regulatory limitations prior to use.
D1599 Test Method for Resistance to Short-Time Hydraulic
1.5 This international standard was developed in accor-
Pressure of Plastic Pipe, Tubing, and Fittings
dance with internationally recognized principles on standard-
D1600 Terminology for Abbreviated Terms Relating to Plas-
ization established in the Decision on Principles for the
tics
Development of International Standards, Guides and Recom-
D2122 Test Method for Determining Dimensions of Ther-
moplastic Pipe and Fittings
1
This specification is under the jurisdiction of ASTM Committee F17 on Plastic
D2765 Test Methods for Determination of Gel Content and
Piping Systems and is the direct responsibility of Subcommittee F17.61 on Water.
Swell Ratio of Crosslinked Ethylene Plastics
Current edition approved Aug. 1, 2021. Published August 2021. Originally
D2837 Test Method for Obtaining Hydrostatic Design Basis
approved in 2013. Last previous edition approved in 2017 as F2929–17. DOI:
10.1520/F2929–
...

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SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Guide
    12 pages
    English language
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  • Guide
    12 pages
    English language
    sale 15% off