ASTM E1961-16

Standard Practice for Mechanized Ultrasonic Testing of Girth Welds Using Zonal Discrimination with Focused Search Units

SIGNIFICANCE AND USE
4.1 This practice is intended primarily for the mechanized ultrasonic examination of pipe girth welds used in the construction of gas and oil pipelines. This practice, with appropriate modifications due to changes in weld profile, may also be used to examine repaired welds. Manual techniques such as described in Practice E164 may also be used to examine production or repaired welds. This practice, with appropriate modifications, may also be used to examine other forms of butt welds including long seams.  
4.2 Techniques used are to be based on zonal discrimination whereby the weld is divided into approximately equal vertical examination sections (zones) each being assessed by a pair of ultrasonic search units. See Fig. 1 for typical zones.  
4.3 Thicknesses of material examined are normally 7 to 25 mm (0.28 to 1.00 in.) and pipe diameters 15 cm (6.0 in.) and greater but this standard may apply to other thicknesses and diameters if the techniques can be proven to provide the required zonal discrimination.  
4.4 Examination zones are typically 2 to 3 mm (0.08 to 0.12 in.) in height. For most applications this will require the use of contact focused search units to avoid interfering signals originating from off-axis geometric reflectors and to avoid excessive overlap with adjacent zones.
SCOPE
1.1 This practice covers the requirements for mechanized ultrasonic examination of girth welds. Evaluation is based upon the results of mechanized ultrasonic examination. Acceptance criteria are based upon flaw limits defined by an Engineering Critical Assessment (ECA) or other accept/reject criteria defined by the Contracting Agency.  
1.2 This practice shall be applicable to the development of an examination procedure agreed upon between the users of this practice.  
1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2016
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: E07 - Nondestructive Testing
• Drafting Committee: E07.06 - Ultrasonic Method

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: E1961 − 16
Standard Practice for
Mechanized Ultrasonic Testing of Girth Welds Using Zonal
1
Discrimination with Focused Search Units
This standard is issued under the fixed designation E1961; 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.
3
1. Scope* 2.3 ASNT Standard:
ASNT Practice SNT-TC-1A Personnel Qualification and
1.1 This practice covers the requirements for mechanized
Certification in Nondestructive Testing
ultrasonic examination of girth welds. Evaluation is based
ANSI/ASNT-CP-189 Standard for Qualification and Certifi-
upon the results of mechanized ultrasonic examination.Accep-
cation of Nondestructive Testing Personnel
tance criteria are based upon flaw limits defined by an
2.4 AIA Standard:
Engineering Critical Assessment (ECA) or other accept/reject
NAS-410 Nondestructive Testing Personnel Qualification
criteria defined by the Contracting Agency.
4
and Certification
1.2 This practice shall be applicable to the development of
2.5 API Standard:
an examination procedure agreed upon between the users of
5
API STD–1104 Welding of Pipeline and Related Facilities
this practice.
2.6 CSA Standard:
1.3 The values stated in SI units are to be regarded as the
6
CSA Z-662 Oil and Gas Pipelines Systems
standard. The inch-pound units given in parentheses are for
7
2.7 ISO Standards
information only.
ISO 9712 Nondestructive Testing—Qualification and Certi-
1.4 This standard does not purport to address all of the
fication of NDT Personnel
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
3.1 Definitions:
bility of regulatory limitations prior to use.
3.1.1 Definitions relating to ultrasonic examination, that
appear in Terminology E1316 shall apply to the terms used in
2. Referenced Documents
this practice.
2.1 The following documents form a part of this practice to
3.2 Definitions of Terms Specific to This Standard:
the extent specified herein:
3.2.1 acceptance criteria—definition of acceptable/
2
2.2 ASTM Standards:
rejectable flaws as defined by an Engineering Critical Assess-
E164 Practice for Contact Ultrasonic Testing of Weldments
ment (ECA), such as defined in CSA-Z662 or API 1104, or
E317 Practice for Evaluating Performance Characteristics of
workmanship criteria as defined by the contracting agency.
Ultrasonic Pulse-Echo Testing Instruments and Systems
3.2.2 contract document—any document specified in the
without the Use of Electronic Measurement Instruments
contractbetweenthecontractingagencyandcontractor,includ-
E543 Specification for Agencies Performing Nondestructive
ing the purchase order, specification, drawings or other written
Testing
material.
E1316 Terminology for Nondestructive Examinations
3
AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
structive Testing and is the direct responsibility of Subcommittee E07.06 on Available fromAerospace IndustriesAssociation ofAmerica, Inc. (AIA), 1000
Ultrasonic Method. WilsonBlvd.,Suite1700,Arlington,VA22209-3928,http://www.aia-aerospace.org.
5
Current edition approved June 1, 2016. Published June 2016. Originally Available from American Petroleum Institute (API), 1220 L. St., NW,
approved in 1998. Last previous edition approved in 2011 as E1961 - 11. DOI: Washington, DC 20005-4070, http://www.api.org.
6
10.1520/E1961-16. Available from Canadian Standards Association (CSA), 5060 Spectrum Way,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.
7
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, 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 ----------------------
E1961 − 16
3.2.3 contracting agency—a government agency, prime diameters if the techniques can be proven to provide the
contractor or subcontractor procuring ultrasonic examination required zonal discrimination.
services.
4.4 Examinatio
...

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: E1961 − 11 E1961 − 16
Standard Practice for
Mechanized Ultrasonic Testing of Girth Welds Using Zonal
1
Discrimination with Focused Search Units
This standard is issued under the fixed designation E1961; 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 covers the requirements for mechanized ultrasonic examination of girth welds. Evaluation is based upon the
results of mechanized ultrasonic examination. Acceptance criteria are based upon flaw limits defined by an Engineering Critical
Assessment (ECA) or other accept/reject criteria defined by the Contracting Agency.
1.2 This practice shall be applicable to the development of an examination procedure agreed upon between the users of this
practice.
1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for
information only.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 The following documents form a part of this practice to the extent specified herein:
2
2.2 ASTM Standards:
E164 Practice for Contact Ultrasonic Testing of Weldments
E317 Practice for Evaluating Performance Characteristics of Ultrasonic Pulse-Echo Testing Instruments and Systems without the
Use of Electronic Measurement Instruments
E543 Specification for Agencies Performing Nondestructive Testing
E1316 Terminology for Nondestructive Examinations
3
2.3 ASNT Standard:
ASNT Practice SNT-TC-1A Personnel Qualification and Certification in Nondestructive Testing
ANSI/ASNT-CP-189 Standard for Qualification and Certification of Nondestructive Testing Personnel
2.4 AIA Standard:
4
NAS-410 Nondestructive Testing Personnel Qualification and Certification
2.5 API Standard:
5
API STD–1104 Welding of Pipeline and Related Facilities
2.6 CSA Standard:
6
CSA Z-662 Oil and Gas Pipelines Systems
7
2.7 ISO Standards
ISO 9712 Nondestructive Testing—Qualification and Certification of NDT Personnel
1
This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.06 on Ultrasonic Method.
Current edition approved July 1, 2011June 1, 2016. Published July 2011June 2016. Originally approved in 1998. Last previous edition approved in 20062011 as
E1961 - 06.E1961 - 11. DOI: 10.1520/E1961-11.10.1520/E1961-16.
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.
3
Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
Available from Aerospace Industries Association of America, Inc. (AIA), 1000 Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.
5
Available from American Petroleum Institute (API), 1220 L. St., NW, Washington, DC 20005-4070, http://www.api.org.
6
Available from Canadian Standards Association (CSA), 5060 Spectrum Way, Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.
7
Available from International Organization for Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva,
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 ----------------------
E1961 − 16
3. Terminology
3.1 Definitions:
3.1.1 Definitions relating to ultrasonic examination, that appear in Terminology E1316 shall apply to the terms used in this
practice.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 acceptance criteria—definition of acceptable/rejectable flaws as defined by an Engineering Critical Assessment (ECA),
such as defined in CSA-Z662 or API 1104, or workmanship criteria as defined by the contracting agency.
3.2.2 contract document—any document specified in the contract
...