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ASTM F689-97(2004)

(Practice)

Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic Casings

Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic Casings

SIGNIFICANCE AND USE
This practice provides a procedure for determining the temperature history of plastic gas pressure pipe encased in metallic casings.  
The data obtained are indicative of the temperature attainable within a service riser of a specific design and size in a given geographical location under the climatogical conditions in existence during the test period.  
The data obtained can be used within the constraints of 4.2 to design the maximum allowable operating pressures permitted by existing codes.
FIG. 1 Weather Station
SCOPE
1.1 This practice describes a procedure for the determination of the temperature history of above-ground plastic gas pressure pipe encased in a metallic casing. Such temperature changes may be due to ambient air temperature, or solar exposure, or both.
1.2 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-2004
ICS
23.040.20 - Plastics pipes
Technical Committee
F17 - Plastic Piping Systems
Drafting Committee
F17.60 - Gas
Current Stage
Ref Project

Relations

Replaces
ASTM F689-97 - Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic Casings
Effective Date
01-Nov-2004
Replaced By
ASTM F689-97(2011) - Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic Casings (Withdrawn 2017)
Effective Date
01-Feb-2011

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ASTM F689-97(2004) - Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic CasingsASTM F689-97(2004) - Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic Casings
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ASTM F689-97(2004) - Standard Practice for Determination of the Temperature of Above-Ground Plastic Gas Pressure Pipe Within Metallic Casings
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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
An American National Standard
Designation:F689–97 (Reapproved 2004)
Standard Practice for
Determination of the Temperature of Above-Ground Plastic
1
Gas Pressure Pipe Within Metallic Casings
ThisstandardisissuedunderthefixeddesignationF689;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 anodeless riser—A type of transition fitting that is
designed to transport gas from an underground polyethylene
1.1 This practice describes a procedure for the determina-
service line to above-ground steel piping. In an anodeless riser
tion of the temperature history of above-ground plastic gas
polyethylene pipe is always the gas carrier, at least, in the
pressure pipe encased in a metallic casing. Such temperature
below ground section.
changes may be due to ambient air temperature, or solar
3.1.2 plastic gas pipe—an approved gas carrier that com-
exposure, or both.
plies with Specification D2513.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Significance and Use
responsibility of the user of this standard to establish appro-
4.1 This practice provides a procedure for determining the
priate safety and health practices and determine the applica-
temperature history of plastic gas pressure pipe encased in
bility of regulatory limitations prior to use.
metallic casings.
2. Referenced Documents 4.2 The data obtained are indicative of the temperature
2
attainable within a service riser of a specific design and size in
2.1 ASTM Standards:
agivengeographicallocationundertheclimatogicalconditions
D2513 Specification for Thermoplastic Gas Pressure Pipe,
in existence during the test period.
Tubing, and Fittings
4.3 The data obtained can be used within the constraints of
E220 Test Method for Calibration of Thermocouples By
4.2 to design the maximum allowable operating pressures
Comparison Techniques
permitted by existing codes.
2.2 Other Document:
Thermoplastic Fuel Gas Piping/Investigation of Maximum
5. Apparatus
Temperatures Attained by Plastic Pipe Inside Metal Ser-
3 5.1 Four-Channel Continuous Chart Thermocouple Re-
vice Risers, TR 30, Plastic Pipe Institute, May 1978
corder.
3. Terminology 5.2 Thermocouple Probes.
5.3 Solar Load Panel, 12 by 20 by 0.032 in. (300 by 500 by
3.1 Definitions:
0.8 mm), steel, painted flat black with an insulated thermo-
couple attached to the underside.
1
5.4 Ambient Thermocouple Apparatus, consisting of a well-
This practice is under the jurisdiction of ASTM Committee F17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.60 on Gas.
ventilated, shaded housing containing a thermocouple for
Current edition approved Nov. 1, 2004. Published November 2004. Originally
monitoring ambient air temperature (see Fig. 1).
approved in 1980. Last previous edition approved in 1997 as F689 – 97. DOI:
10.1520/F0689-97R04.
6. Test Specimens
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.1 The riser may be either preassembled or fabricated in
Standards volume information, refer to the standard’s Document Summary page on
accordance with written procedures.
the ASTM website.
3
6.2 The outlet from the specimen defined by 6.1 shall be
AvailablefromthePlasticPipeInstitute,1825ConnecticutAve.NW,Suite680,
Washington DC, 10017. capped to simulate no-flow (stagnant) conditions.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F689–97 (2004)
7.2 Install the riser so that the bare thermocouple probe
location is 6 6 1 in. (150 m 6 25 mm) above grade and facing
south. Install a vertical reflective panel 8 6 1 in. (200 6 25
mm) due north of the specimens, facing due south. The
reflective panel shall be at least 1 ft (300 mm) higher than the
exposed height of the specimens and shall extend at least 1 ft
(300 mm) beyond the center line of the test specimen in each
horizontal direction. The panel shall have a matte-white
surface.Abed of light-colored crushed stone shall be provided
extending from the reflective panel at least 1 ft (300 mm)
beyond the test specimen (see Fig. 2). Connect specimen
thermocouples to the continuous chart recorder.
7.3 Install the ambient thermocouple apparatus in accor-
dance with Fig. 1 within the immediate vicinity of the
specimen and connect it to the continuous chart recorder. An
optional fifth thermocouple may be installed 12 in. below
grade.
7.4 Install the solar load panel in
...

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1.1 The gel content of pipe and tubing produced from crosslinked polyethylene plastics as described in Specification F876 and other pipe or tubing standards is determined by extracting with solvents such as xylenes. A test method for quantitative determination of gel content is described herein. The method is applicable to PEX pipe and tubing of all densities, including those containing fillers, and provides correction for the inert fillers present in some of those compounds.  
1.2 Continuous extraction (see definition in Section 3) is used in this method to test the gel content of crosslinked polyethylene specimens. Continuous extraction when used for testing gel content has the advantages of decreased cost of testing, increased accuracy and consistency of results, and decreased test time. This is because extraction with a pure solvent is more efficient than extraction with a partially saturated solvent.  
1.3 While extraction tests may be made on articles of any shape, this test method is applicable for determining the gel content of crosslinked polyethylene pipes and tubing.  
1.4 This test method makes use of xylenes or alternative solvents. Alternative solvents either have lower toxicity than xylenes or allow decreased extraction times. The alternative solvents are also potentially beneficial from an economic and environmental viewpoint. Xylenes are used for referee tests.  
1.5 The values stated in SI units are to be regarded as standard. The inch-pound units in brackets are for information only.  
1.6 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.  
1.7 This international standard was developed in accordance with internationally recognized principles on standard...

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