ASTM E2929-18

Standard Practice for Guided Wave Testing of Above Ground Steel Piping with Magnetostrictive Transduction

SIGNIFICANCE AND USE
5.1 The purpose of this practice is to outline a procedure for using GWT to locate areas in metal pipes in which wall loss has occurred due to corrosion or erosion.  
5.2 GWT does not provide a direct measurement of wall thickness, but is sensitive to a combination of the CSC (or reflection coefficient) and circumferential extent and axial extent of any metal loss. Based on this information, a classification of the severity can be assigned.  
5.3 The GWT method provides a screening tool to quickly identify any discontinuity along the pipe. Where a possible defect is found, a follow-up inspection of suspected areas with ultrasonic testing or other NDT methods is normally required to obtain detailed thickness information, nature, and extent of damage.  
5.4 GWT also provides some information on the axial length of a discontinuity, provided that the axial length is longer than roughly a quarter of the wavelength.  
5.5 The identification and severity assessment of any possible defects is qualitative only. An interpretation process to differentiate between relevant and non-relevant signals is necessary.  
5.6 This practice only covers the application specified in the scope. The GWT method has the capability and can be used for applications where the pipe is insulated, buried, in road crossings, and where access is limited.  
5.7 GWT shall be performed by qualified and certified personnel, as specified in the contract or purchase order. Qualifications shall include training specific to the use of the equipment employed, interpretation of the test results, and guided wave technology.  
5.8 A documented program which includes training, examination, and experience for the GWT personnel certification shall be maintained by the supplying party.
SCOPE
1.1 This practice provides a guide for the use of waves generated using magnetostrictive transduction for guided wave testing (GWT) welded tubulars. Magnetostrictive materials transduce or convert time varying magnetic fields into mechanical energy. As a magnetostrictive material is magnetized, it strains. Conversely, if an external force produces a strain in a magnetostrictive material, the material’s magnetic state will change. This bi-directional coupling between the magnetic and mechanical states of a magnetostrictive material provides a transduction capability that can be used for both actuation and sensing devices.  
1.2 GWT utilizes ultrasonic guided waves in the 10 to approximately 250 kHz range, sent in the axial direction of the pipe, to non-destructively test pipes for discontinuities or other features by detecting changes in the cross-section or stiffness of the pipe, or both.  
1.3 GWT is a screening tool. The method does not provide a direct measurement of wall thickness or the exact dimensions of discontinuities. However, an estimate of the severity of the discontinuity can be obtained.  
1.4 This practice is intended for use with tubular carbon steel products having nominal pipe size (NPS) 2 to 48 corresponding to 60.3 to 1219.2 mm (2.375 to 48 in.) outer diameter, and wall thickness between 3.81 and 25.4 mm (0.15 and 1 in.).  
1.5 This practice only applies to GWT of basic pipe configuration. This includes pipes that are straight, constructed of a single pipe size and schedules, fully accessible at the test location, jointed by girth welds, supported by simple contact supports and free of internal, or external coatings, or both; the pipe may be insulated or painted.  
1.6 This practice provides a general practice for performing the examination. The interpretation of the guided wave data obtained is complex and training is required to properly perform data interpretation.  
1.7 This practice does not establish an acceptance criterion. Specific acceptance criteria shall be specified in the contractual agreement by the cognizant engineer.  
1.8 Units—The values stated in SI units are to be regarded as standard. The values given...

General Information

• Status: Historical
• Publication Date: 31-May-2018
• ICS: 23.040.99 - Other pipeline components
• Technical Committee: E07 - Nondestructive Testing
• Drafting Committee: E07.10 - Specialized NDT 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
Designation: E2929 − 18
Standard Practice for
Guided Wave Testing of Above Ground Steel Piping with
1
Magnetostrictive Transduction
This standard is issued under the fixed designation E2929; 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 obtained is complex and training is required to properly
perform data interpretation.
1.1 This practice provides a guide for the use of waves
generated using magnetostrictive transduction for guided wave 1.7 This practice does not establish an acceptance criterion.
testing (GWT) welded tubulars. Magnetostrictive materials Specific acceptance criteria shall be specified in the contractual
transduce or convert time varying magnetic fields into me- agreement by the cognizant engineer.
chanical energy.As a magnetostrictive material is magnetized,
1.8 Units—The values stated in SI units are to be regarded
it strains. Conversely, if an external force produces a strain in
as standard. The values given in parentheses are mathematical
a magnetostrictive material, the material’s magnetic state will
conversions to SI units that are provided for information only
change. This bi-directional coupling between the magnetic and
and are not considered standard.
mechanical states of a magnetostrictive material provides a
1.9 This standard does not purport to address all of the
transduction capability that can be used for both actuation and
safety concerns, if any, associated with its use. It is the
sensing devices.
responsibility of the user of this standard to establish appro-
1.2 GWT utilizes ultrasonic guided waves in the 10 to
priate safety, health, and environmental practices and deter-
approximately 250 kHz range, sent in the axial direction of the
mine the applicability of regulatory limitations prior to use.
pipe, to non-destructively test pipes for discontinuities or other
1.10 This international standard was developed in accor-
featuresbydetectingchangesinthecross-sectionorstiffnessof
dance with internationally recognized principles on standard-
the pipe, or both.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.3 GWT is a screening tool. The method does not provide
mendations issued by the World Trade Organization Technical
adirectmeasurementofwallthicknessortheexactdimensions
Barriers to Trade (TBT) Committee.
of discontinuities. However, an estimate of the severity of the
discontinuity can be obtained.
2. Referenced Documents
1.4 This practice is intended for use with tubular carbon
2
2.1 ASTM Standards:
steel products having nominal pipe size (NPS) 2 to 48
E543 Specification forAgencies Performing Nondestructive
corresponding to 60.3 to 1219.2 mm (2.375 to 48 in.) outer
Testing
diameter, and wall thickness between 3.81 and 25.4 mm (0.15
E1316 Terminology for Nondestructive Examinations
and 1 in.).
IEEE/SI-10 American National Standard for Metric Practice
1.5 This practice only applies to GWT of basic pipe
3
2.2 Other Standards:
configuration. This includes pipes that are straight, constructed
SNT-TC-1A Personnel Qualification and Certification in
of a single pipe size and schedules, fully accessible at the test
Non-Destructive Testing
location, jointed by girth welds, supported by simple contact
supports and free of internal, or external coatings, or both; the
3. Terminology
pipe may be insulated or painted.
3.1 Definitions of terms specific to this standard are pro-
1.6 This practice provides a general practice for performing
vided in this section. Some common terms such as defect may
the examination. The interpretation of the guided wave data
be referenced to Terminology E1316.
1 2
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
structive Testing and is the direct responsibility of Subcommittee E07.10 on contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Specialized NDT Methods. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved June 1, 2018. Published June 2018. Originally the ASTM website.
3
approved in 2013. Last previous edition approved in 2013 as E2929–13. DOI: AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
10.1520/E2929-18. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E2929 − 18
3.2 Definitions of Terms S
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2929 − 13 E2929 − 18
Standard Practice for
Guided Wave Testing of Above Ground Steel Piping with
1
Magnetostrictive Transduction
This standard is issued under the fixed designation E2929; 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
1.1 This practice provides a guide for the use of waves generated using magnetostrictive transduction technology for guided
wave testing (GWT) welded tubulars. Magnetostrictive materials transduce or convert time varying magnetic fields into
mechanical energy. As a magnetostrictive material is magnetized, it strains. Conversely, if an external force produces a strain in
a magnetostrictive material, the material’s magnetic state will change. This bi-directional coupling between the magnetic and
mechanical states of a magnetostrictive material provides a transduction capability that can be used for both actuation and sensing
devices.
1.2 GWT utilizes ultrasonic guided waves in the 10 to approximately 250 kHz range, sent in the axial direction of the pipe, to
non-destructively test pipes for discontinuities or other features by detecting changes in the cross-section or stiffness of the pipe,
or both.
1.3 GWT is a screening tool. The method does not provide a direct measurement of wall thickness or the exact dimensions of
discontinuities. However, an estimate of the severity of the discontinuity can be obtained.
1.4 This practice is intended for use with tubular carbon steel products having nominal pipe size (NPS) 2 to 48 corresponding
to 60.3 to 1219.2 mm (2.375 to 48 in.) 48 in.) outer diameter, and wall thickness between 3.81 and 25.4 mm (0.15 and 1 in.).1 in.).
1.5 This practice only applies to GWT of basic pipe configuration. This includes pipes that are straight, constructed of a single
pipe size and schedules, fully accessible at the test location, jointed by girth welds, supported by simple contact supports and free
of internal, or external coatings, or both; the pipe may be insulated or painted.
1.6 This practice provides a general practice for performing the examination. The interpretation of the guided wave data
obtained is complex and training is required to properly perform data interpretation.
1.7 This practice does not establish an acceptance criterion. Specific acceptance criteria shall be specified in the contractual
agreement by the cognizant engineer.
1.8 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this The
values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered
standard.
1.9 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.10 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E543 Specification for Agencies Performing Nondestructive Testing
1
This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.10 on Specialized NDT
Methods.
Current edition approved June 1, 2013June 1, 2018. Published June 2013June 2018. Originally approved in 2013. Last previous edition approved in 2013 as E2929–13.
DOI: 10.1520/E2929-1310.1520/E2929-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E2929 − 18
E1065 Practice for Evaluating Characteristics of Ultrasonic Search Units
E1316 Terminology for Nondestructive Examinatio
...