EN ISO 23279:2010
(Main)Non-destructive testing of welds - Ultrasonic testing - Characterization of indications in welds (ISO 23279:2010)
Non-destructive testing of welds - Ultrasonic testing - Characterization of indications in welds (ISO 23279:2010)
ISO 23279:2010 specfies how to characterize embedded indications by classifying them as planar or non-planar.
This procedure is also suitable for indications that break the surface after removal of the weld reinforcement.
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung - Charakterisierung von Anzeigen in Schweißnähten (ISO 23279:2010)
Diese Norm legt fest, wie durch eine Einteilung in flächige oder volumenhafte Anzeigen eine Charakterisierung
von inneren Anzeigen vorzunehmen ist.
Dieses Verfahren ist auch für Anzeigen geeignet, die nach Abarbeiten der Schweißnahtüberhöhung an der
Oberfläche offen liegen.
Contrôle non destructif des assemblages soudés - Contrôle par ultrasons - Caractérisation des indications dans les assemblages soudés (ISO 23279:2010)
L'ISO 23279:2010 spécifie comment caractériser les indications internes en les classant en indications planes ou volumiques.
Ce mode opératoire est également approprié aux indications débouchantes après élimination de la surépaisseur de la soudure.
Neporušitveno preskušanje zvarnih spojev - Ultrazvočno preskušanje - Karakterizacija indikacij v zvarnih spojih (ISO 23279:2010)
Ta mednarodni standard določa, kako karakterizirati vtisnjene oznake, da se razvrstijo kot ravninske in neravninske. Ta postopek je primeren tudi za oznake, ki po odstranitvi zvarne ojačitve prelomijo površino.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2011
1DGRPHãþD
SIST EN 1713:1999
SIST EN 1713:1999/A1:2003
SIST EN 1713:1999/A2:2004
1HSRUXãLWYHQRSUHVNXãDQMH]YDUQLKVSRMHY8OWUD]YRþQRSUHVNXãDQMH
.DUDNWHUL]DFLMDLQGLNDFLMY]YDUQLKVSRMLK ,62
Non-destructive testing of welds - Ultrasonic testing - Characterization of indications in
welds (ISO 23279:2010)
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung -
Charakterisierung von Anzeigen in Schweißnähten (ISO 23279:2010)
Contrôles non destructifs des assemblages soudés - Contrôle par ultrasons -
Caractérisation des indications de soudures (ISO 23279:2010)
Ta slovenski standard je istoveten z: EN ISO 23279:2010
ICS:
25.160.40 Varjeni spoji in vari Welded joints
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 23279
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2010
ICS 25.160.40 Supersedes EN 1713:1998
English Version
Non-destructive testing of welds - Ultrasonic testing -
Characterization of indications in welds (ISO 23279:2010)
Contrôle non destructif des assemblages soudés - Contrôle Zerstörungsfreie Prüfung von Schweißverbindungen -
par ultrasons - Caractérisation des indications dans les Ultraschallprüfung - Charakterisierung von Anzeigen in
assemblages soudés (ISO 23279:2010) Schweißnähten (ISO 23279:2010)
This European Standard was approved by CEN on 13 February 2010.
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 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23279:2010: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 23279:2010) has been prepared by Technical Committee CEN/TC 121 “Welding”, the
secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 44 "Welding and allied
processes".
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 2010, and conflicting national standards shall be
withdrawn at the latest by September 2010.
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 1713:1998.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
INTERNATIONAL ISO
STANDARD 23279
Second edition
2010-03-01
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
Reference number
ISO 23279:2010(E)
©
ISO 2010
ISO 23279:2010(E)
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ii © ISO 2010 – All rights reserved
ISO 23279:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Principle.1
4 Criteria .2
4.1 General .2
4.2 Echo amplitude criteria (stages 1 and 2) .3
4.3 Directional reflectivity criteria (stage 3).3
4.4 Echostatic pattern criteria (stage 4) .4
4.5 Transverse echodynamic pattern criteria (stage 5) .4
4.6 Complementary examination .4
Annex A (normative) Classification of internal indications in welds — Flowchart procedure.5
Annex B (informative) Directional reflectivity .8
Annex C (informative) Basic echodynamic patterns of reflectors.9
Bibliography.14
ISO 23279:2010(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 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 second edition cancels and replaces the first edition (ISO 23279:2007), which has been technically
revised.
Requests for official interpretations of any aspect of this International Standard 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 2010 – All rights reserved
INTERNATIONAL STANDARD ISO 23279:2010(E)
Non-destructive testing of welds — Ultrasonic testing —
Characterization of indications in welds
1 Scope
This International Standard specifies how to characterize embedded indications by classifying them as planar
or non-planar.
This procedure is also suitable for indications 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 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and
assessment
3 Principle
Classification of indications as planar or non-planar is based on several parameters:
a) welding techniques;
b) geometrical position of the indication;
c) maximum echo amplitude;
d) directional reflectivity;
e) echostatic pattern (i.e. A-scan);
f) echodynamic pattern.
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 internal weld indications suitable for general applications.
Figure A.1 should be applied in conjunction with the two first parameters listed above and not taken in
isolation.
The classification procedure specified in this International Standard is also suitable for indications that are
surface breaking after removal of the weld reinforcement (see Figure 1).
ISO 23279:2010(E)
Dimensions in millimetres
Key
A ground weld
Figure 1 — Location of indications in 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) echostatic pattern (A-scan);
d) echodynamic pattern.
These criteria are applied using a flowchart procedure (see Annex A).
It is recommended that the same probes be used for detection of indications and for classification. 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 between 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:
a) stage 1: to avoid the classification of indications with very low echo amplitudes;
b) stage 2: to classify all indications with high echo amplitude as planar;
c) stage 3: primarily to classify lack of fusion;
d) stage 4: primarily to classify inclusions;
e) stage 5: primarily to classify cracks.
NOTE Indications resulting from a combination of an inclusion and lack of fusion are classified as planar by the
flowchart procedure. An example of this type of flaw is given in Figure A.2.
2 © ISO 2010 – All rights reserved
ISO 23279:2010(E)
4.2 Echo amplitude criteria (stages 1 and 2)
4.2.1 Low amplitudes (stage 1)
It is accepted that an indication with an echo amp
...
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