Non-destructive testing - Ultrasonic testing - Examination for discontinuities perpendicular to the surface (ISO 16826:2012)

EN ISO 16826 defines the principles for tandem- and longitudinal-longitudinal-transverse (LLT)wave examination for the detection of discontinuities perpendicular to the surface. The general principles required for the ultrasonic examination of industrial products are described in ISO 16810. A list of symbols and equations is given in ISO 16811. The tandem- or LLT-examination should be used for the detection of planar discontinuities with distance to the surface greater than 15 mm. This International Standard has been prepared for the examination of metallic ma-terials with a thickness between 40 mm and 500 mm with parallel or concentric surfaces. It can, however, be used for other materials and smaller thickness provided special measures are taken.

Zerstörungsfreie Prüfung - Ultraschallprüfung - Prüfung auf Inhomogenitäten senkrecht zur Oberfläche (ISO 16826:2012)

Diese Internationale Norm legt die Grundlagen fest für die Tandemprüfung und die Longitudinal-Longitudinal-Transversal-Prüfung (LLT-Prüfung) für den Nachweis von Inhomogenitäten, die senkrecht zur Oberfläche orientiert sind.
Die für die Ultraschallprüfung von Industrieprodukten notwendigen allgemeinen Grundlagen sind in ISO 16810 beschrieben. ISO 16811 enthält eine Liste mit Symbolen und Gleichungen.
Die Tandem- oder die LLT-Prüfung sollte zum Nachweis von ebenen Inhomogenitäten mit einem Abstand zur Oberfläche von mehr als 15 mm angewendet werden. Diese Internationale Norm wurde für die Prüfung von metallischen Werkstoffen mit einer Dicke zwischen 40 mm und 500 mm und parallelen oder konzentrischen Oberflächen erstellt. Unter der Voraussetzung, dass besondere Maßnahmen ergriffen werden, kann sie jedoch für andere Werkstoffe und geringere Dicken angewendet werden.

Essais non destructifs - Contrôle par ultrasons - Contrôle des discontinuités perpendiculaires à la surface (ISO 16826:2012)

L'ISO 16826:2012 définit les principes généraux du contrôle par les techniques du tandem et des ondes longitudinales et longitudinales-transversales (LLT) pour la détection des discontinuités perpendiculaires à la surface.
Les principes généraux du contrôle par ultrasons des produits industriels sont décrits dans l'ISO 16810. La liste des symboles et des équations est donnée dans l'ISO 16811.
Il convient d'utiliser le contrôle en tandem ou LLT pour détecter des discontinuités planes situées à plus de 15 mm de la surface. La présente Norme internationale a été élaborée pour contrôler les matériaux métalliques dont l'épaisseur est comprise entre 40 mm et 500 mm, et ayant des surfaces parallèles ou concentriques. Elle peut toutefois être utilisée pour d'autres matériaux et des épaisseurs inférieures, à condition que des mesures spécifiques soient prises.

Neporušitvene preiskave - Ultrazvočne preiskave - Preiskave za odkrivanje nehomogenosti, ki potekajo pravokotno na površino (ISO 16826:2012)

Standard EN ISO 16826 opredeljuje načela za preiskavo s tandemskim in longitudinalno-longitudinalno-tranzverzalnim (LTT) valovanjem za odkrivanje nehomogenosti, ki potekajo pravokotno na površino. Osnovna načela za uporabo ultrazvočnih preiskav industrijskih izdelkov so opisana v standardu ISO 16810. Seznam simbolov in enačb je podan v standardu 16811. Tandemska preiskava ali preiskava LTT se uporablja za zaznavanje planarnih nehomogenosti z razdaljo od površine, večjo od 15 mm. Ta mednarodni standard je bil pripravljen za pregled kovinskih materialov z debelino med 40 in 500 mm in vzporednimi ali koncentričnimi površinami. Lahko se uporablja tudi za materiale druge vrste in manjše debeline, če je poskrbljeno za posebne ukrepe.

General Information

Status
Published
Public Enquiry End Date
29-Nov-2013
Publication Date
30-Jun-2014
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-May-2014
Due Date
03-Aug-2014
Completion Date
01-Jul-2014

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SLOVENSKI STANDARD
SIST EN ISO 16826:2014
01-julij-2014
1DGRPHãþD
SIST EN 583-4:2004
SIST EN 583-4:2004/A1:2004
1HSRUXãLWYHQHSUHLVNDYH8OWUD]YRþQHSUHLVNDYH3UHLVNDYH]DRGNULYDQMH
QHKRPRJHQRVWLNLSRWHNDMRSUDYRNRWQRQDSRYUãLQR ,62
Non-destructive testing - Ultrasonic testing - Examination for discontinuities
perpendicular to the surface (ISO 16826:2012)
Zerstörungsfreie Prüfung - Ultraschallprüfung - Prüfung auf Inhomogenitäten senkrecht
zur Oberfläche (ISO 16826:2012)
Essais non destructifs - Contrôle par ultrasons - Contrôle des discontinuités
perpendiculaires à la surface (ISO 16826:2012)
Ta slovenski standard je istoveten z: EN ISO 16826:2014
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
SIST EN ISO 16826:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 16826:2014

---------------------- Page: 2 ----------------------

SIST EN ISO 16826:2014

EUROPEAN STANDARD
EN ISO 16826

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2014
ICS 19.100 Supersedes EN 583-4:2002
English Version
Non-destructive testing - Ultrasonic testing - Examination for
discontinuities perpendicular to the surface (ISO 16826:2012)
Essais non destructifs - Contrôle par ultrasons - Contrôle Zerstörungsfreie Prüfung - Ultraschallprüfung - Prüfung auf
des discontinuités perpendiculaires à la surface (ISO Inhomogenitäten senkrecht zur Oberfläche (ISO
16826:2012) 16826:2012)
This European Standard was approved by CEN on 9 February 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16826:2014 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 16826:2014
EN ISO 16826:2014 (E)
Contents Page
Foreword .3
2

---------------------- Page: 4 ----------------------

SIST EN ISO 16826:2014
EN ISO 16826:2014 (E)
Foreword
The text of ISO 16826:2012 has been prepared by Technical Committee ISO/TC 135 “Non-destructive testing”
of the International Organization for Standardization (ISO) and has been taken over as EN ISO 16826:2014 by
Technical Committee CEN/TC 138 “Non-destructive testing” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2014, and conflicting national standards shall be
withdrawn at the latest by September 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 583-4:2002.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16826:2012 has been approved by CEN as EN ISO 16826:2014 without any modification.


3

---------------------- Page: 5 ----------------------

SIST EN ISO 16826:2014

---------------------- Page: 6 ----------------------

SIST EN ISO 16826:2014

INTERNATIONAL ISO
STANDARD 16826
First edition
2012-04-01

Non-destructive testing — Ultrasonic
testing — Examination for discontinuities
perpendicular to the surface
Essais non destructifs — Contrôle par ultrasons — Contrôle des
discontinuités perpendiculaires à la surface




Reference number
ISO 16826:2012(E)
©
ISO 2012

---------------------- Page: 7 ----------------------

SIST EN ISO 16826:2014
ISO 16826:2012(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2012 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 16826:2014
ISO 16826:2012(E)
Contents Page

Foreword .iv

Introduction . v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Tandem examination.1
4.1 General .1
4.2 Time base adjustment.2
4.3 Setting of sensitivity .3
4.4 Determination of examination zones.3
4.5 DGS-diagram for tandem examination.4
4.6 Corrections of sensitivity .5
4.7 Object with concentric surfaces .5
5 LLT-examination.7
5.1 General .7
5.2 Time base adjustment and determination of discontinuity depth .8
5.3 Setting of sensitivity .9
5.4 Determination of examination depth.9
5.5 DGS-diagrams for LLT-examination.11
5.6 Correction of sensitivity .11
Annex A (informative) Nomograms for determination of tandem distances for convex (Figure A.1)
and concave (Figure A.2) scanning surface .12

© ISO 2012 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 16826:2014
ISO 16826:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16826 was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 3,
Ultrasonic testing.
iv © ISO 2012 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 16826:2014
ISO 16826:2012(E)
Introduction
This International Standard is based on EN 583-4:2002+A1:2003, Non-destructive testing — Ultrasonic
examination — Part 4: Examination for discontinuities perpendicular to the surface.
The following International Standards are linked.
ISO 16810, Non-destructive testing — Ultrasonic testing — General principles
ISO 16811, Non-destructive testing — Ultrasonic testing — Sensitivity and range setting
ISO 16823, Non-destructive testing — Ultrasonic testing — Transmission technique
ISO 16826, Non-destructive testing — Ultrasonic testing — Examination for discontinuities perpendicular to
the surface
ISO 16827, Non-destructive testing — Ultrasonic testing — Characterization and sizing of discontinuities
ISO 16828, Non-destructive testing — Ultrasonic testing — Time-of-flight diffraction technique as a method for
detection and sizing of discontinuities


© ISO 2012 – All rights reserved v

---------------------- Page: 11 ----------------------

SIST EN ISO 16826:2014

---------------------- Page: 12 ----------------------

SIST EN ISO 16826:2014
INTERNATIONAL STANDARD ISO 16826:2012(E)

Non-destructive testing — Ultrasonic testing — Examination for
discontinuities perpendicular to the surface
1 Scope
This International Standard defines the principles for tandem- and longitudinal-longitudinal-transverse (LLT)
wave examination for the detection of discontinuities perpendicular to the surface.
The general principles required for the ultrasonic examination of industrial products are described in
ISO 16810. A list of symbols and equations is given in ISO 16811.
The tandem- or LLT-examination should be used for the detection of planar discontinuities with distance to the
surface greater than 15 mm. This International Standard has been prepared for the examination of metallic ma-
terials with a thickness between 40 mm and 500 mm with parallel or concentric surfaces. It can, however, be
used for other materials and smaller thickness provided special measures are taken.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 5577, Non-destructive testing — Ultrasonic inspection — Vocabulary
ISO 16810, Non-destructive testing — Ultrasonic testing — General principles
ISO 16811, Non-destructive testing — Ultrasonic testing — Sensitivity and range setting
EN 1330-4, Non-destructive testing — Terminology — Terms used in ultrasonic testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 and EN 1330-4 apply.
4 Tandem examination
4.1 General
The examination is normally carried out using two similar 45° angle probes
...

SLOVENSKI STANDARD
kSIST FprEN ISO 16826:2013
01-november-2013
1HSRUXãLWYHQRSUHVNXãDQMH8OWUD]YRþQHSUHLVNDYH3UHLVNDYH]DRGNULYDQMH
QHKRPRJHQRVWLNLSRWHNDMRSUDYRNRWQRQDSRYUãLQR ,62
Non-destructive testing - Ultrasonic testing - Examination for discontinuities
perpendicular to the surface (ISO 16826:2012)
Zerstörungsfreie Prüfung - Ultraschallprüfung - Prüfung auf Inhomogenitäten senkrecht
zur Oberfläche (ISO 16826:2012)
Essais non destructifs - Contrôle par ultrasons - Contrôle des discontinuités
perpendiculaires à la surface (ISO 16826:2012)
Ta slovenski standard je istoveten z: FprEN ISO 16826
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
kSIST FprEN ISO 16826:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
kSIST FprEN ISO 16826:2013

---------------------- Page: 2 ----------------------
kSIST FprEN ISO 16826:2013


EUROPEAN STANDARD
FINAL DRAFT
FprEN ISO 16826
NORME EUROPÉENNE

EUROPÄISCHE NORM

August 2013
ICS 19.100 Will supersede EN 583-4:2002
English Version
Non-destructive testing - Ultrasonic testing - Examination for
discontinuities perpendicular to the surface (ISO 16826:2012)
Essais non destructifs - Contrôle par ultrasons - Contrôle Zerstörungsfreie Prüfung - Ultraschallprüfung - Prüfung auf
des discontinuités perpendiculaires à la surface (ISO Inhomogenitäten senkrecht zur Oberfläche (ISO
16826:2012) 16826:2012)
This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical
Committee CEN/TC 138.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprEN ISO 16826:2013: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
kSIST FprEN ISO 16826:2013
FprEN ISO 16826:2013 (E)
Contents
Page
Foreword .3


2

---------------------- Page: 4 ----------------------
kSIST FprEN ISO 16826:2013
FprEN ISO 16826:2013 (E)
Foreword
The text of ISO 16826:2012 has been prepared by Technical Committee ISO/TC 135 “Non-destructive testing”
of the International Organization for Standardization (ISO) and has been taken over as FprEN ISO
16826:2013 by Technical Committee CEN/TC 138 “Non-destructive testing” the secretariat of which is held by
AFNOR.
This document is currently submitted to the Unique Acceptance Procedure.
This document will supersede EN 583-4:2002.
Endorsement notice
The text of ISO 16826:2012 has been approved by CEN as FprEN ISO 16826:2013 without any modification.

3

---------------------- Page: 5 ----------------------
kSIST FprEN ISO 16826:2013

---------------------- Page: 6 ----------------------
kSIST FprEN ISO 16826:2013

INTERNATIONAL ISO
STANDARD 16826
First edition
2012-04-01

Non-destructive testing — Ultrasonic
testing — Examination for discontinuities
perpendicular to the surface
Essais non destructifs — Contrôle par ultrasons — Contrôle des
discontinuités perpendiculaires à la surface




Reference number
ISO 16826:2012(E)
©
ISO 2012

---------------------- Page: 7 ----------------------
kSIST FprEN ISO 16826:2013
ISO 16826:2012(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2012 – All rights reserved

---------------------- Page: 8 ----------------------
kSIST FprEN ISO 16826:2013
ISO 16826:2012(E)
Contents Page

Foreword .iv

Introduction . v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Tandem examination.1
4.1 General .1
4.2 Time base adjustment.2
4.3 Setting of sensitivity .3
4.4 Determination of examination zones.3
4.5 DGS-diagram for tandem examination.4
4.6 Corrections of sensitivity .5
4.7 Object with concentric surfaces .5
5 LLT-examination.7
5.1 General .7
5.2 Time base adjustment and determination of discontinuity depth .8
5.3 Setting of sensitivity .9
5.4 Determination of examination depth.9
5.5 DGS-diagrams for LLT-examination.11
5.6 Correction of sensitivity .11
Annex A (informative) Nomograms for determination of tandem distances for convex (Figure A.1)
and concave (Figure A.2) scanning surface .12

© ISO 2012 – All rights reserved iii

---------------------- Page: 9 ----------------------
kSIST FprEN ISO 16826:2013
ISO 16826:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16826 was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 3,
Ultrasonic testing.
iv © ISO 2012 – All rights reserved

---------------------- Page: 10 ----------------------
kSIST FprEN ISO 16826:2013
ISO 16826:2012(E)
Introduction
This International Standard is based on EN 583-4:2002+A1:2003, Non-destructive testing — Ultrasonic
examination — Part 4: Examination for discontinuities perpendicular to the surface.
The following International Standards are linked.
ISO 16810, Non-destructive testing — Ultrasonic testing — General principles
ISO 16811, Non-destructive testing — Ultrasonic testing — Sensitivity and range setting
ISO 16823, Non-destructive testing — Ultrasonic testing — Transmission technique
ISO 16826, Non-destructive testing — Ultrasonic testing — Examination for discontinuities perpendicular to
the surface
ISO 16827, Non-destructive testing — Ultrasonic testing — Characterization and sizing of discontinuities
ISO 16828, Non-destructive testing — Ultrasonic testing — Time-of-flight diffraction technique as a method for
detection and sizing of discontinuities


© ISO 2012 – All rights reserved v

---------------------- Page: 11 ----------------------
kSIST FprEN ISO 16826:2013

---------------------- Page: 12 ----------------------
kSIST FprEN ISO 16826:2013
INTERNATIONAL STANDARD ISO 16826:2012(E)

Non-destructive testing — Ultrasonic testing — Examination for
discontinuities perpendicular to the surface
1 Scope
This International Standard defines the principles for tandem- and longitudinal-longitudinal-transverse (LLT)
wave examination for the detection of discontinuities perpendicular to the surface.
The general principles required for the ultrasonic examination of industrial products are described in
ISO 16810. A list of symbols and equations is given in ISO 16811.
The tandem- or LLT-examination should be used for the detection of planar discontinuities with distance to the
surface greater than 15 mm. This International Standard has been prepared for the examination of metallic ma-
terials with a thickness between 40 mm and 500 mm with parallel or concentric surfaces. It can, however, be
used for other materials and smaller thickness provided special measures are taken.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 5577, Non-destructive testing — Ultrasonic inspection — Vocabulary
ISO 16810, Non-destructive testing — Ultrasonic testing — General principles
ISO 16811, Non-destructive testing — Ultrasonic testing — Sensitivity and range setting
EN 1330-4, Non-destructive testing — Terminology — Terms used in ultrasonic testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 and EN 1330-4 apply.
4 Tandem examination
4.1 General
The examination is normally carried out using two similar 45° angle probes, one probe operating as the
transmitter and the other probe as receiver. For wall thicknesses greater than approximately 160 mm, probes
with different transducer sizes are preferred in order to ensure approximately the same beam diameters in the
examination zone.
The use of pro
...

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