ASTM E571-19
(Practice)Standard Practice for Electromagnetic (Eddy-Current) Examination of Nickel and Nickel Alloy Tubular Products
Standard Practice for Electromagnetic (Eddy-Current) Examination of Nickel and Nickel Alloy Tubular Products
SIGNIFICANCE AND USE
5.1 Eddy-current testing is a nondestructive method of locating discontinuities in metallic materials. Signals can be produced by discontinuities originating on either the external or internal surfaces of the tube or by discontinuities totally contained within the wall. Since the density of eddy currents decreases nearly exponentially with increasing distance from the surface nearest the coil, the response to deep-seated defects decreases correspondingly. Phase changes are also associated with changes in depth, allowing the use of phase analysis techniques.
5.2 The response from natural discontinuities can be significantly different than that from artificial discontinuities, such as drilled holes or notches. For this reason, sufficient work should be done to establish the sensitivity level and setup required to detect natural discontinuities of consequence to the end use of the product.
5.3 Some indications obtained by this method may not be relevant to product quality; for example, an irrelevant indication may be caused by minute dents or tool chatter marks, which are not detrimental to the end use of the product. Irrelevant indications can mask unacceptable discontinuities. Relevant indications are those which result from discontinuities. Any indication that exceeds the rejection level shall be treated as a relevant indication until it can be demonstrated that it is irrelevant.
5.4 Generally, eddy-current examination systems are not sensitive to discontinuities adjacent to the ends of the tube (end effect).
5.5 Discontinuities such as scratches or seams that are continuous and uniform over the full length of the tube may not always be detected with differential encircling coils or probes scanned along the tube length.
5.6 For material that is magnetic, a strong magnetic field shall be placed in the region of the examining coil. A magnetic field may also be used to improve the signal-to-noise ratio in tubing that exhibits slight residual magnetism.
SCOPE
1.1 This practice2 covers the procedures for eddy-current examination of nickel and nickel alloy tubes. These procedures are applicable for tubes with outside diameters up to 2 in. (50.8 mm), incl, and wall thicknesses from 0.035 to 0.120 in. (0.889 to 3.04 mm), incl. This standard applies to procedures where the sensor is placed on the outside surface of the tube. These procedures may be used for tubes beyond the size range recommended, by contractual agreement between the purchaser and the producer.
1.2 The procedures described in this practice make use of fixed encircling test coils or probe systems.
1.3 Units—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.
Note 1: For convenience, the term “tube” or “tubular product” will hereinafter be used to refer to both pipe and tubing.
1.4 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
Relations
Buy Standard
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: E571 − 19
Standard Practice for
Electromagnetic (Eddy-Current) Examination of Nickel and
1
Nickel Alloy Tubular Products
This standard is issued under the fixed designation E571; 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* 2. Referenced Documents
3
2
2.1 ASTM Standards:
1.1 This practice covers the procedures for eddy-current
E309 Practice for Eddy Current Examination of Steel Tubu-
examination of nickel and nickel alloy tubes.These procedures
lar Products Using Magnetic Saturation
are applicable for tubes with outside diameters up to 2 in.
E1316 Terminology for Nondestructive Examinations
(50.8 mm), incl, and wall thicknesses from 0.035 to 0.120 in.
(0.889 to 3.04 mm), incl. This standard applies to procedures 2.2 Other Documents:
where the sensor is placed on the outside surface of the tube. SNT-TC-1A Recommended Practice for Personnel Qualifi-
4
These procedures may be used for tubes beyond the size range cation and Certification in Nondestructive Testing
recommended, by contractual agreement between the pur- ANSI/ASNT-CP-189 ASNT Standard for Qualification and
4
chaser and the producer. Certification of Nondestructive Testing Personnel
NAS-410 Certification and Qualification of Nondestructive
1.2 The procedures described in this practice make use of
5
Personnel (Quality Assurance Committee)
fixed encircling test coils or probe systems.
ISO-9712 Non-destructive testing -- Qualification and certi-
6
1.3 Units—The values stated in inch-pound units are to be fication of NDT personnel
regarded as standard. The values given in parentheses are
3. Terminology
mathematical conversions to SI units that are provided for
information only and are not considered standard.
3.1 Standardterminologyrelatingtoelectromagnetictesting
NOTE 1—For convenience, the term “tube” or “tubular product” will
may be found in Terminology E1316, Section C, Electromag-
hereinafter be used to refer to both pipe and tubing.
netic Testing.
1.4 This standard does not purport to address all of the
4. Summary of Practice
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 Examination is usually performed by the use of one of
priate safety, health, and environmental practices and deter-
two general techniques:
mine the applicability of regulatory limitations prior to use.
4.1.1 Encircling Coil Technique—Examinationisperformed
1.5 This international standard was developed in accor- by passing the tube lengthwise through a coil energized with
alternating current at one or more frequencies. See Fig. 1. The
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the electrical impedance of the coil is modified by the proximity of
Development of International Standards, Guides and Recom- the tube, the tube dimensions, electrical conductivity, saturat-
mendations issued by the World Trade Organization Technical ing magnetic field, magnetic permeability, and metallurgical or
Barriers to Trade (TBT) Committee.
3
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
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- Standards volume information, refer to the standard’s Document Summary page on
structive Testing and is the direct responsibility of Subcommittee E07.07 on the ASTM website.
4
Electromagnetic Method. AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
Current edition approved July 1, 2019. Published September 2019. Originally 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
5
approved in 1976. Last previous edition approved in 2012 as E571 – 12. DOI: Available fromAerospace IndustriesAssociation ofAmerica, Inc. (AIA), 1000
10.1520/E0571-19. WilsonBlvd.,Suite1700,Arlington,VA22209-3928,http://www.aia-aerospace.org.
2 6
For ASME Boiler and Pressure Vessel Code applications see related Practice Available from International Organization for Standardization (ISO), 1, ch. de
SE-571 in Section II of that Code. la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
-----------------
...
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: E571 − 12 E571 − 19
Standard Practice for
Electromagnetic (Eddy-Current) Examination of Nickel and
1
Nickel Alloy Tubular Products
This standard is issued under the fixed designation E571; 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*
2
1.1 This practice covers the procedures for eddy-current examination of nickel and nickel alloy tubes. These procedures are
applicable for tubes with outside diameters up to 2 in. (50.8 mm), 2 in. (50.8 mm), incl, and wall thicknesses from 0.035 to 0.120
in. 0.120 in. (0.889 to 3.04 mm), incl. 3.04 mm), incl. This standard applies to procedures where the sensor is placed on the outside
surface of the tube. These procedures may be used for tubes beyond the size range recommended, by contractual agreement
between the purchaser and the producer.
1.2 The procedures described in this practice make use of fixed encircling test coils or probe systems.
1.3 Units—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.
NOTE 1—For convenience, the term “tube” or “tubular product” will hereinafter be used to refer to both pipe and tubing.
1.4 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.
1.5 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.
2. Referenced Documents
3
2.1 ASTM Standards:
E309 Practice for Eddy Current Examination of Steel Tubular Products Using Magnetic Saturation
E543 Specification for Agencies Performing Nondestructive Testing
E1316 Terminology for Nondestructive Examinations
2.2 Other Documents:
4
SNT-TC-1A Recommended Practice for Personnel Qualification and Certification in Nondestructive Testing
4
ANSI/ASNT-CP-189 ASNT Standard for Qualification and Certification of Nondestructive Testing Personnel
5
NAS-410 Certification and Qualification of Nondestructive Personnel (Quality Assurance Committee)
6
ISO-9712 Non-destructive testing -- Qualification and certification of NDT personnel
3. Terminology
3.1 Standard terminology relating to electromagnetic testing may be found in Terminology E1316, Section C, Electromagnetic
Testing.
1
This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.07 on Electromagnetic
Method.
Current edition approved Aug. 1, 2012July 1, 2019. Published September 2012September 2019. Originally approved in 1976. Last previous edition approved in 20072012
as E571 - 98E571 – 12.(2007). DOI: 10.1520/E0571-12.10.1520/E0571-19.
2
For ASME Boiler and Pressure Vessel Code applications see related Practice SE-571 in Section II of that Code.
3
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
5
Available from Aerospace Industries Association of America, Inc. (AIA), 1000 Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.
6
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E571 − 19
4. Summary of Practice
4.1 Examination is usually performed by the use of one of two general techniques:
4.1.1
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.