ASTM E1961-11

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

SIGNIFICANCE AND USE
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.
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.
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.
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: 30-Jun-2011
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: E07 - Nondestructive Testing
• Drafting Committee: E07.06 - Ultrasonic Method

Relations

• Replaces: ASTM E1961-06 - Standard Practice for Mechanized Ultrasonic Testing of Girth Welds Using Zonal Discrimination with Focused Search Units
• Effective Date: 01-Jul-2011
• Referred By: ASTM E543-21 - Standard Specification for Agencies Performing Nondestructive Testing
• Effective Date: 01-Jul-2011
• Referred By: ASTM E2373/E2373M-19 - Standard Practice for Use of the Ultrasonic Time of Flight Diffraction (TOFD) Technique
• Effective Date: 01-Jul-2011

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 − 11
StandardPractice 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:
6
1.3 The values stated in SI units are to be regarded as the
CSA Z-662 Oil and Gas Pipelines Systems
standard. The inch-pound units given in parentheses are for
information only. 3. Terminology
3.1 Definitions:
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1.1 Definitions relating to ultrasonic examination, that
appear in Terminology E1316 shall apply to the terms used in
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- this practice.
bility of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 acceptance criteria—definition of acceptable/
2. Referenced Documents
rejectable flaws as defined by an Engineering Critical Assess-
ment (ECA), such as defined in CSA-Z662 or API 1104, or
2.1 The following documents form a part of this practice to
workmanship criteria as defined by the contracting agency.
the extent specified herein:
2 3.2.2 contract document—any document specified in the
2.2 ASTM Standards:
contractbetweenthecontractingagencyandcontractor,includ-
E164 Practice for Contact Ultrasonic Testing of Weldments
ing the purchase order, specification, drawings or other written
E317 Practice for Evaluating Performance Characteristics of
material.
Ultrasonic Pulse-Echo Testing Instruments and Systems
3.2.3 contracting agency—a government agency, prime
without the Use of Electronic Measurement Instruments
contractor or subcontractor procuring ultrasonic examination
E543 Specification forAgencies Performing Nondestructive
services.
Testing
E1316 Terminology for Nondestructive Examinations
3.2.4 contractor—the nondestructive examination contrac-
tor engaged by the contracting agency in work covered by this
practice.
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde-
structive Testing and is the direct responsibility of Subcommittee E07.06 on
3
Ultrasonic Method. AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
Current edition approved July 1, 2011. Published July 2011. Originally approved 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
in 1998. Last previous edition approved in 2006 as E1961 - 06. DOI: 10.1520/ Available fromAerospace IndustriesAssociation ofAmerica, Inc. (AIA), 1000
E1961-11. WilsonBlvd.,Suite1700,Arlington,VA22209-3928,http://www.aia-aerospace.org.
2 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Petroleum Institute (API), 1220 L. St., NW,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Washington, DC 20005-4070, http://www.api.org.
6
Standards volume information, refer to the standard’s Document Summary page on Available from Canadian Standards Association (CSA), 5060 Spectrum Way,
the ASTM website. Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.
*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

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E1961 − 11
3.2.5 mapping type presentations—an ultrasonic image pre- nating from off-axis geometric reflectors and to avoid exces-
sentation whereby the digitizedA-scan signal is represented as sive overlap with adjacent zones.
colors or grayscale for amplitude variation along o
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:E1961–06 Designation: E1961 – 11
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 bracketsparentheses 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 Military Standard: AIA Standard:
4
MIL-Std-410NAS-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
3. Terminology
3.1 Definitions:
1
ThispracticeisunderthejurisdictionofASTMCommitteeE07onNondestructiveTestingandisthedirectresponsibilityofSubcommitteeE07.06onUltrasonicMethod.
´1
Current edition approved Dec. 1, 2006. Published January 2007. Originally approved in 1998. Last previous edition approved in 2003 as E1961-98(2003) . DOI:
10.1520/E1961-06.
Current edition approved July 1, 2011. Published July 2011. Originally approved in 1998. Last previous edition approved in 2006 as E1961 - 06. DOI: 10.1520/E1961-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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 The American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS
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, 1220 L Street, Northwest, Washington, DC 20005.
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, 178 Rexdale Boulevard, Etobicoke, Ontario, Canada M9W 1R3.
6
Available from Canadian Standards Association (CSA), 5060 Spectrum Way, Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.
*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

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E1961 – 11
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 Engine
...