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ASTM G55-88(1998)

(Test Method)

Standard Test Method for Evaluating Pipeline Coating Patch Materials (Withdrawn 2007)

Standard Test Method for Evaluating Pipeline Coating Patch Materials (Withdrawn 2007)

SCOPE
1.1 This test method provides an accelerated means of determining the relative sealing abilities of pipeline patching materials that are used to seal holidays in pipeline coatings on steel pipe. This test method is intended for utilization of specimens of pipeline coatings on small-diameter pipe, for representing coatings used for buried or submerged service, and where the purpose of the coating is to provide an electrical barrier between the steel pipe and its environment.  
1.2 This test method is not intended for evaluating patch materials that are overlapped upon themselves.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 This standard does not purport to address all of the safety problems, 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.
WITHDRAWN RATIONALE
This test method provides an accelerated means of determining the relative sealing abilities of pipeline patching materials that are used to seal holidays in pipeline coatings on steel pipe. This test method is intended for utilization of specimens of pipeline coatings on small-diameter pipe, for representing coatings used for buried or submerged service, and where the purpose of the coating is to provide an electrical barrier between the steel pipe and its environment.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this test method was withdrawn in March 2007 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Historical
Publication Date
09-Jul-1998
Withdrawal Date
20-Mar-2007
ICS
23.040.99 - Other pipeline components
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.48 - Durability of Pipeline Coating and Linings
Current Stage
Ref Project

Relations

Replaced By
ASTM G55-07 - Standard Test Method for Evaluating Pipeline Coating Patch Materials
Effective Date
01-Jul-2007

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ASTM G55-88(1998) - Standard Test Method for Evaluating Pipeline Coating Patch Materials (Withdrawn 2007)ASTM G55-88(1998) - Standard Test Method for Evaluating Pipeline Coating Patch Materials (Withdrawn 2007)
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ASTM G55-88(1998) - Standard Test Method for Evaluating Pipeline Coating Patch Materials (Withdrawn 2007)
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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
Designation:G55–88 (Reapproved 1998)
Standard Test Method for
Evaluating Pipeline Coating Patch Materials
ThisstandardisissuedunderthefixeddesignationG55;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope materials. The user is cautioned against the use of this method
for absolute material properties characterization.
1.1 This test method provides an accelerated means of
3.3 This procedure provides an accelerated method by
determining the relative sealing abilities of pipeline patching
exposing the patch to a severe radius of curvature on small-
materials that are used to seal holidays in pipeline coatings on
diameterpipe.Thespecimenisalsoexposedtoastressvoltage
steel pipe. This test method is intended for utilization of
in the presence of a highly conductive electrolyte.
specimens of pipeline coatings on small-diameter pipe, for
representing coatings used for buried or submerged service,
4. Apparatus
and where the purpose of the coating is to provide an electrical
4.1 Test Vessel—A cylindrical glass battery jar (or equiva-
barrier between the steel pipe and its environment.
lent), approximately 300 mm (12 in.) in diameter and 300 mm
1.2 This test method is not intended for evaluating patch
in height. One magnesium anode shall be contained in each
materials that are overlapped upon themselves.
battery jar, with a maximum of eight pipe specimens, and with
1.3 The values stated in SI units are to be regarded as the
each specimen measuring about 25 mm (1 in.) in diameter by
standard.The values given in parenthes are for information
approximately 300 mm in length of coated pipe. (See 4.3 and
only.
Fig. 1 and Fig. 2.)
1.4 This standard does not purport to address all of the
4.2 Suspension—The suspension ring for supporting the
safety concerns, if any, associated with its use. It is the
pipe specimens shall be an electrically nonconductive circular
responsibility of the user of this standard to establish appro-
disk, measuring approximately 300 mm (12 in.) in diameter
priate safety and health practices and determine the applica-
and approximately 5 mm ( ⁄16 in.) in thickness. (See 6.4.) Drill
bility of regulatory limitations prior to use.
a 15-mm ( ⁄2-in.) diameter hole through the center of the ring
2. Summary of Test Method for external extension of the anode lead wire. Drill eight
suspension holes, about 45 mm (1 ⁄4 in.) in diameter, through
2.1 Patched pipeline coating specimens are suspended in an
thesuspensionringforthepipespecimens;theseholesshallbe
aqueous, alkaline, low-resistivity electrolyte. The specimens
centered 110 mm (4 ⁄2 in.) from the center of the suspension
areindividuallyconnectedtoamagnesiumanodeorrectifierat
ring and evenly spaced around the ring at 45° increments as
apointexternaltotheelectrolyte.Thecoated,patchedpipeline
measured from the center of the suspension ring.
specimens are sealed at the base and at all other areas except
4.3 Potential—A high-purity magnesium anode shall be
the patch boundaries, such that the only paths for current flow
used, weighing approximately 2.3 kg (5 lb), and having an
areattheboundariesofthepatches.Currentflowineachpatch
open-circuit potential of approximately 1.7 d-c V relative to a
area is averaged from monthly readings taken for one year.
copper-copper sulfate electrode, and complete with a factory-
3. Significance and Use
sealed lead wire. The magnesium anode may be replaced by a
controlledd-cvoltagefromarectifier,andthenmaintainingthe
3.1 Holidays in pipeline coatings may be repaired by
potential between the specimen having the least current flow
circumferential wrapping with a suitable pipe wrap tape.
and a copper-copper sulfate reference cell (with the cell being
However,thistechniqueisnotalwayspracticableandpatching
properlyimmersedintheelectrolyte)at1.5060.05d-cV.(See
mayberequired.Theeffectivenessofapatchmaterialdepends
Note 1.) The anode should be composed of a suitable noncon-
upon its adhesion to the original pipeline coating to effect
sumable material. This option will avoid the precipitation of
sealing.
magnesium salts on the specimens.
3.2 The results of this accelerated test have been found to
yield comparative data useful for the selection of patching
The sole source of supply of a nonconconsumable anode, Durachlor 51 anode,
This test method is under the jurisdiction of ASTM Committee D-1 on Paint Type B, 18-in. with cable, known to the committee at this time is Duriron Co., P.O.
and Related Coatings, Materials, andApplications,and is the direct responsibility of Box 1145, Dayton, OH 45401. If you are aware of alternative suppliers, please
Subcommittee D01.48on Deterioration of Pipeline Coatings and Linings. provide this information to ASTM Headquarters. Your comments will receive
Current edition approved May 27, 1988. Published July 1988. Originally careful consideration at a meeting of the responsible technical committee, which
published as G55–77. Last previous edition G55–83. you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
G55
5.2 Circuit Tap—A 5-mm ( ⁄16-in.) diameter hole shall be
drilled or tapped (or a self-tapping screw may be used) at a
point 13 mm ( ⁄2 in.) below the top of each specimen. This tap
is for a machine screw anode lead wire connection.
5.3 Pipe Suspension Support Holes—A 6-mm ( ⁄4-in.) di-
ameter hole shall be drilled completely through both walls of
thecoatedpipespecimenatapoint20mm( ⁄4in.)fromthetop
end of the specimen and located vertically beneath the circuit
tap hole.Ashort length of wooden dowel pin about 5 mm ( ⁄16
in.) in diameter shall be used as an insertion through the
suspension holes to support and level the pipe specimen on the
circular suspension ring when the suspension ring is mounted
on the battery jar.
5.4 Intentional Holidays—A 4-fluted 13-mm ( ⁄2-in.) diam-
eterfacingbitshallbeusedtodrillintentionalholidaysthrough
the original pipeline coating to the metal. Drilling such
holidays shall be practiced on scrap pieces of small-diameter
coatedpipe,priortodrillingtheholidaysinthetestspecimens.
Drilling shall not be any deeper than necessary into the metal
ofthepipe.Threeholidaysshallbepreparedoneachspecimen
in a vertical line directly underneath the circuit tap to corre-
spond to electrolyte immersions of 38 mm (1 ⁄2 in.), 114 mm
1 1
(4 ⁄2in.),and190mm(7 ⁄2in.),asmeasuredfromthetopofthe
holiday to the surface of the electrolyte. The thickness of the
suspension ring shall be considered for its effect in elevating
the pipe specimens in the electrolyte.
5.5 Patches—Asquare patch configuration of 25 by 25 mm
(1 by 1 in.), evenly centered about the holiday, shall be lightly
FIG. 1 Test Assembly for Evaluating Pipeline Coating Patch
marked. This will provide a minimum patch overlap of 6 mm
Materials
( ⁄4 in.) as measured perpendicular to the center of each patch
edge to the circumference of the holiday. The top and bottom
NOTE 1—The potential of the magnesium anode will approximate this
edges of each patch shall be in the horizontal plane. Each
range over the life of the test. If a calomel electrode is used for the
marked patch area shall be lightly buffed with 120-grit sand-
reference cell, the potential should be−1.43 6 0.05 d-c V.
paper. A primer shall be applied using clean cotton on a stick
4.4 Electrolyte—Use1%eachbyweightofanhydrouspure
to extend the primer to the edges of the marked patch area
gradesofsodiumchloride,sodiumsulfate,andsodiumcarbon-
when specified by the manufacturer of the patch. The manu-
ate, dissolved in either distilled water or demineralized water.
facturers’specifieddryingtimeshallbeusedforprimersbefore
ThiselectrolyteshallneverbelessalkalinethanpH 510.0and
applicationofthepatch.Scissorsoraknifeshallbeusedtocut
should be within a resistivity range from 20 to 35 V · cm.
tape p
...

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SCOPE
1.1 These test methods cover the apparatus and procedures for detecting pinholes and holidays in coatings used to protect pipelines.  
1.2 Method A is designed to detect pinholes and holidays in thin-film coatings from 0.025 mm to 0.254 mm (1 mils to 10 mils) in thickness using ordinary tap water and an applied voltage of less than 100 V d-c. It is effective on films up to 0.508 mm (20 mils) thickness if a wetting agent is used with the water.  
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1.4 The values stated in SI units to three significant decimals are to be regarded as the standard. The values given in parentheses are for information only.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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1.2 The procedures will produce consistent results upon which acceptance standards can be based. This test may be performed in accordance with the Pressure Differential (Procedure A), the Pressure Decay (Procedure B), or the Vacuum Decay (Procedure C) method.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3.1 Within the text, the SI units are shown in brackets.  
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Standard Specification for Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Composite Pressure Pipe

SCOPE
1.1 This specification covers a coextruded polyethylene composite pressure pipe with a welded aluminum tube reinforcement between the inner and outer layers. The inner and outer polyethylene layers are bonded to the aluminum tube by a melt adhesive. Included is a system of nomenclature for the polyethylene-aluminum-polyethylene (PE-AL-PE) pipes, the requirements and test methods for materials, the dimensions and strengths of the component tubes and finished pipe, adhesion tests, and the burst and sustained pressure performance. Also given are the requirements and methods of marking. The pipe covered by this specification is intended for use in potable water distribution systems for residential and commercial applications, water service, underground irrigation systems, and radient panel heating systems, baseboard, snow- and ice-melt systems, and gases that are compatible with composite pipe and fittings.  
1.2 This specification relates only to composite pipes incorporating a welded aluminum tube having both internal and external polyethylene layers. The welded aluminium tube is capable of sustaining internal pressures. Pipes consisting of metallic layers not welded together and plastic layers other than polyethylene are outside the scope of this specification.  
1.3 Specifications for connectors for use with pipe meeting the requirements of this specification are given in Annex A1.  
1.4 This specification excludes crosslinked polyethylene-aluminum-crosslinked polyethylene pipes (see Specification F1281).  
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.6 The following precautionary caveat pertains only to the test methods portion, Section 9, 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.  
1.7 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.

  • Technical specification
    11 pages
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  • Technical specification
    11 pages
    English language
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ASTM
ASTM D7800/D7800M-23(Test Method)
Standard Test Method for Determination of Elemental Sulfur in Natural Gas

SIGNIFICANCE AND USE
5.1 Elemental sulfur impacts the quality of pipeline natural gas and deposits on pipeline flanges, fittings and valves, thereby impacting their performance. Natural gas suppliers and distributers require a standardized test method for measuring elemental sulfur. Some government regulators are also interested in measuring elemental sulfur since it would provide a means for assessing the contribution of elemental sulfur in pipelines to the SOx emission inventory from burning of gaseous fuels. Use of this method in concert with sulfur gas laboratory test methods such as Test Methods D4084, D4468, D5504, and D6228 or on-line methods such as D7165 or D7166 can provide users with a comprehensive sulfur compound profile for natural gas or other gaseous fuels. Other applications may include elemental sulfur in particulate deposits such as diesel exhausts.
SCOPE
1.1 This test method is primarily for the determination of elemental sulfur in natural gas pipelines, but it may be applied to other gaseous fuel pipelines and applications provided the user has validated its suitability for use. The detection range for elemental sulfur, reported as sulfur, is 0.0018 mg/L to 30 mg/L. The results may also be reported in units of mg/kg or ppm.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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.

  • Standard
    13 pages
    English language
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