SIST EN ISO 23279:2018
(Main)Non-destructive testing of welds - Ultrasonic testing - Characterization of discontinuities in welds (ISO 23279:2017)
Non-destructive testing of welds - Ultrasonic testing - Characterization of discontinuities in welds (ISO 23279:2017)
This document specifies how to characterize indications from discontinuities by classifying them as
originating from planar or non-planar embedded discontinuities.
This procedure is also suitable for indications from discontinuities that break the surface after removal
of the weld reinforcement.
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung - Charakterisierung von Inhomogenitäten in Schweißnähten (ISO 23279:2017)
Diese Internationale Norm legt fest, wie eine Charakterisierung von Anzeigen von inneren Inhomogenitäten vorzunehmen ist, indem sie als von flächigen oder volumenhaften Inhomogenitäten stammend eingeordnet werden.
Das Verfahren ist auch für Anzeigen von Inhomogenitäten geeignet, die nach Abarbeiten der Schweißnahtüberhöhung an der Oberfläche offen liegen.
Essais non destructifs des assemblages soudés - Contrôle par ultrasons - Caractérisation des discontinuités dans les assemblages soudés (ISO 23279:2017)
ISO 23279:2017 spécifie comment caractériser les indications des discontinuités en les classant comme provenant de discontinuités non débouchantes planes ou volumiques.
Ce mode opératoire est également approprié aux indications des discontinuités débouchantes après élimination de la surépaisseur de la soudure.
Neporušitveno preskušanje zvarnih spojev - Ultrazvočno preskušanje - Karakterizacija nehomogenosti v zvarnih spojih (ISO 23279:2017)
Ta dokument določa, kako karakterizirati indikacije iz nehomogenosti tako, da se jih klasificira, da izhajajo iz ravnih ali neravnih vgrajenih nehomogenosti.
Ta postopek je primeren tudi za indikacije iz nehomogenosti, ki prelomijo površino po odstranitvi zvarjene armature.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 23279:2018
01-marec-2018
1DGRPHãþD
SIST EN ISO 23279:2011
1HSRUXãLWYHQRSUHVNXãDQMH]YDUQLKVSRMHY8OWUD]YRþQRSUHVNXãDQMH
.DUDNWHUL]DFLMDQHKRPRJHQRVWLY]YDUQLKVSRMLK ,62
Non-destructive testing of welds - Ultrasonic testing - Characterization of discontinuities
in welds (ISO 23279:2017)
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung -
Charakterisierung von Inhomogenitäten in Schweißnähten (ISO 23279:2017)
Essais non destructifs des assemblages soudés - Contrôle par ultrasons -
Caractérisation des discontinuités dans les assemblages soudés (ISO 23279:2017)
Ta slovenski standard je istoveten z: EN ISO 23279:2017
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
SIST EN ISO 23279:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 23279:2018
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SIST EN ISO 23279:2018
EN ISO 23279
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 23279:2010
English Version
Non-destructive testing of welds - Ultrasonic testing -
Characterization of discontinuities in welds (ISO
23279:2017)
Essais non destructifs des assemblages soudés - Zerstörungsfreie Prüfung von Schweißverbindungen -
Contrôle par ultrasons - Caractérisation des Ultraschallprüfung - Charakterisierung von
discontinuités dans les assemblages soudés (ISO Inhomogenitäten in Schweißnähten (ISO 23279:2017)
23279:2017)
This European Standard was approved by CEN on 4 June 2017.
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, Serbia, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23279:2017 E
worldwide for CEN national Members.
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SIST EN ISO 23279:2018
EN ISO 23279:2017 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 23279:2018
EN ISO 23279:2017 (E)
European foreword
This document (EN ISO 23279:2017) has been prepared by Technical Committee ISO/TC 44 “Welding
and allied processes” in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” the secretariat of which is held by DIN.
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 March 2018, and conflicting national standards shall
be withdrawn at the latest by March 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 23279:2010.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 23279:2017 has been approved by CEN as EN ISO 23279:2017 without any modification.
3
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SIST EN ISO 23279:2018
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SIST EN ISO 23279:2018
INTERNATIONAL ISO
STANDARD 23279
Third edition
2017-08
Non-destructive testing of welds —
Ultrasonic testing — Characterization
of discontinuities in welds
Essais non destructifs des assemblages soudés — Contrôle par
ultrasons — Caractérisation des discontinuités dans les assemblages
soudés
Reference number
ISO 23279:2017(E)
©
ISO 2017
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SIST EN ISO 23279:2018
ISO 23279:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 23279:2018
ISO 23279:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Criteria . 2
5.1 General . 2
5.2 Echo amplitude criteria (stages 1 and 2) . 3
5.2.1 Low amplitudes (stage 1) . 3
5.2.2 High amplitudes (stage 2) . 3
5.3 Directional reflectivity criteria (stage 3) . 3
5.3.1 Applicability based on length . 3
5.3.2 Application conditions . 3
5.3.3 Criteria . 3
5.4 Echo static pattern criteria (stage 4) . 4
5.5 Transverse echo dynamic pattern criteria (stage 5) . 4
5.6 Complementary testing . 4
Annex A (normative) Classification of indications from internal discontinuities in welds —
Flowchart procedure . 5
Annex B (informative) Directional reflectivity . 8
Annex C (informative) Basic echo dynamic patterns of reflectors .10
© ISO 2017 – All rights reserved iii
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SIST EN ISO 23279:2018
ISO 23279:2017(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 5, Testing and inspection of welds.
This third edition cancels and replaces the second edition (ISO 23279:2010), which has been technically
revised.
Requests for official interpretations of any aspect of this document should be directed to the Secretariat
of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be found at
www .iso .org.
iv © ISO 2017 – All rights reserved
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SIST EN ISO 23279:2018
INTERNATIONAL STANDARD ISO 23279:2017(E)
Non-destructive testing of welds — Ultrasonic testing —
Characterization of discontinuities in welds
1 Scope
This document specifies how to characterize indications from discontinuities by classifying them as
originating from planar or non-planar embedded discontinuities.
This procedure is also suitable for indications from discontinuities that break the surface after removal
of the weld reinforcement.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 11666, Non-destructive testing of welds — Ultrasonic testing — Acceptance levels
ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and
assessment
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
4 Principle
Classification of discontinuities as planar or non-planar is based on several parameters:
a) welding techniques;
b) geometrical position of the discontinuity;
c) maximum echo amplitude;
d) directional reflectivity;
e) echo static pattern (i.e. A-scan);
f) echo dynamic pattern (envelope).
The process of classification involves examining each of the parameters against all the others in
...
SLOVENSKI STANDARD
oSIST prEN ISO 23279:2016
01-april-2016
1HSRUXãLWYHQRSUHVNXãDQMH]YDUQLKVSRMHY8OWUD]YRþQRSUHVNXãDQMH
.DUDNWHUL]DFLMDLQGLNDFLMY]YDUQLKVSRMLK ,62',6
Non-destructive testing of welds - Ultrasonic testing - Characterization of indications in
welds (ISO/DIS 23279:2016)
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung -
Charakterisierung von Anzeigen in Schweißnähten (ISO/DIS 23279:2016)
Contrôle non destructif des assemblages soudés - Contrôle par ultrasons -
Caractérisation des indications dans les assemblages soudés (ISO/DIS 23279:2016)
Ta slovenski standard je istoveten z: prEN ISO 23279
ICS:
25.160.40 Varjeni spoji in vari Welded joints
oSIST prEN ISO 23279:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 23279:2016
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oSIST prEN ISO 23279:2016
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23279
ISO/TC 44/SC 5 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2016-02-11 2016-05-10
Non-destructive testing of welds — Ultrasonic testing —
Characterization of indications in welds
Contrôle non destructif des assemblages soudés — Contrôle par ultrasons — Caractérisation des
indications dans les assemblages soudés
ICS: 25.160.40
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 23279:2015(E)
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. ISO 2015
---------------------- Page: 3 ----------------------
oSIST prEN ISO 23279:2016
ISO/DIS 23279:2015(E) ISO/DIS 23279
Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Criteria . 2
Annex A (normative) Classification of indications from internal discontinuities in welds —
Flowchart procedure . 5
Annex B (informative) Directional reflectivity . 9
Annex C (informative) Basic dynamic echo patterns of reflectors . 10
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
© ISO 2015 – All rights reserved iii
---------------------- Page: 4 ----------------------
oSIST prEN ISO 23279:2016
ISO/DIS 23279
Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Criteria . 2
Annex A (normative) Classification of indications from internal discontinuities in welds —
Flowchart procedure . 5
Annex B (informative) Directional reflectivity . 9
Annex C (informative) Basic dynamic echo patterns of reflectors . 10
© ISO 2015 – All rights reserved iii
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oSIST prEN ISO 23279:2016
ISO/DIS 23279
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the WTO principles in the Technical Barriers to Trade (TBT)
see the following URL: Foreword - Supplementary information
ISO 23279 was prepared by the European Committee for Standardization (CEN) Technical Committee TC
121, Welding, in collaboration with ISO Technical Committee TC 44, Welding and allied processes,
Subcommittee SC 5, Testing and inspection of welds, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 23279:2010), which has been technically
revised.
iv © ISO 2015 – All rights reserved
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oSIST prEN ISO 23279:2016
DRAFT INTERNATIONAL STANDARD ISO/DIS 23279
Non-destructive testing of welds — Ultrasonic testing —
Characterization of indications in welds
1 Scope
This International Standard specifies how to characterize indications from embedded discontinuities by
classifying them as planar or non-planar.
This procedure is also suitable for indications from discontinuities that break the surface after removal of
the weld reinforcement.
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 11666, Non-destructive testing of welds - Ultrasonic testing - Acceptance levels
ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment
3 Principle
Classification of discontinuities as planar or non-planar is based on several parameters:
a) welding techniques;
b) geometrical position of the discontinuity;
c) maximum echo amplitude;
d) directional reflectivity;
e) static echo pattern (i.e. A-scan);
f) dynamic echo pattern (envelope).
The process of classification involves examining each of the parameters against all the others in order to
arrive at an accurate conclusion.
For guidance, Figure A.1 gives the classification of indications from internal weld discontinuities suitable for
general applications. Figure A.1 should be applied in conjunction with the two parameters a) and b) listed
above and not taken in isolation.
The classification procedure specified in this International Standard is also suitable for indications that come
from surface breaking discontinuities after removal of the weld reinforcement (see Figure 1).
© ISO 2015 – All rights reserved 1
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oSIST prEN ISO 23279:2016
ISO/DIS 23279
Dimensions in millimetres
Key
A ground weld
Figure 1 — Origin of indications from a weld
4 Criteria
4.1 General
The classification is carried out by the successive application of several discriminatory criteria to:
a) echo amplitude;
b) directional reflectivity;
c) static echo pattern (A-scan);
d) dynamic echo pattern (envelope).
These criteria are applied using a flowchart procedure (see Annex A).
It is recommended that the same probes be used for detection and for classification of discontinuities. The
flowchart procedure standardizes a system of classification. Several thresholds are defined in decibels by a
comparison with the distance-amplitude curve (DAC) or by a comparison of the maximum echo heights from
the discontinuity when tested from different directions.
Proposed thresholds for the different stages in the flowchart procedure are given in Table A.1.
The flowchart procedure calls for five stages:
stage 1: to avoid the classification of indications with very low echo amplitudes;
stage 2: to classify all indications with high echo amplitude as associated with planar discontinuities;
stage 3: primarily to classify lack of fusion;
stage 4: primarily to classify inclusions;
stage 5: primarily to classify cracks.
Note to entry: Indications resulting from a combination of an inclusion and lack of fusion are classif
...
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