EN ISO 17640:2018
(Main)Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2018)
Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2018)
This document specifies techniques for the manual ultrasonic testing of fusion-welded joints in metallic materials of thickness ≥8 mm which exhibit low ultrasonic attenuation (especially that due to scatter) at object temperatures from 0 °C to 60 °C. It is primarily intended for use on full penetration welded joints where both the welded and parent material are ferritic.
Where material-dependent ultrasonic values are specified in this document, they are based on steels having an ultrasonic sound velocity of (5 920 ± 50) m/s for longitudinal waves and (3 255 ± 30) m/s for transverse waves.
This document specifies four testing levels, each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels A, B, and C is given in Annex A.
This document specifies that the requirements of testing level D, which is intended for special applications, be in accordance with general requirements. Testing level D can only be used when defined by specification. This includes tests of metals other than ferritic steel, tests on partial penetration welds, tests with automated equipment, and tests at object temperatures outside the range 0 °C to 60 °C.
This document can be used for the assessment of discontinuities, for acceptance purposes, by either of the following techniques:
a) evaluation based primarily on length and echo amplitude of the discontinuity;
b) evaluation based on characterization and sizing of the discontinuity by probe movement techniques.
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung - Techniken, Prüfklassen und Bewertung (ISO 17640:2018)
Essais non destructifs des assemblages soudés - Contrôle par ultrasons - Techniques, niveaux d'essai et évaluation (ISO 17640:2018)
Le présent document spécifie des techniques de contrôle manuel par ultrasons des assemblages en matériaux métalliques soudés par fusion, d'épaisseur égale ou supérieure à 8 mm, présentant une atténuation relativement faible des ultrasons (en particulier celle due à la diffusion) à des températures d'objet comprises entre 0 °C et 60 °C. Elle vise particulièrement les assemblages soudés à pleine pénétration dont le métal de base et la soudure sont ferritiques.
Lorsque les valeurs des caractéristiques ultrasonores dépendantes des matériaux sont précisées dans le présent document, elles concernent des aciers dans lesquels la vitesse des ondes ultrasonores est égale à (5 920 ± 50) m/s pour les ondes longitudinales et à (3 255 ± 30) m/s pour les ondes transversales.
Le présent document spécifie quatre niveaux de contrôle, chacun correspondant à une probabilité différente de détection des défauts. Un guide du choix des niveaux de contrôle A, B et C est donné dans l'Annexe A.
Le présent document spécifie que les exigences relatives au niveau de contrôle D, qui est prévu pour des applications spéciales, sont conformes aux exigences générales. Le niveau de contrôle D ne peut être utilisé que lorsqu'il est défini par une spécification. Cela inclut les contrôles de métaux autres que les aciers ferritiques, les contrôles sur des soudures à pénétration partielle, les contrôles avec des équipements automatisés, et les contrôles à des températures d'objet situées hors de la plage 0 °C à 60 °C.
Le présent document peut être utilisé pour l'évaluation des discontinuités, aux fins d'acceptation, par l'une des techniques suivantes:
a) évaluation fondée principalement sur la longueur et l'amplitude d'écho de la discontinuité;
b) évaluation fondée sur la caractérisation et le dimensionnement de la discontinuité par des techniques de déplacement du traducteur.
Neporušitveno preskušanje zvarnih spojev - Ultrazvočno preskušanje - Tehnike, stopnje preskušanja in ocenjevanje (ISO 17640:2018)
Ta dokument določa tehnike za ročno ultrazvočno preskušanje talilno zvarjenih spojev v kovinskih materialih debeline ≥ 8 mm, ki izkazujejo nizko stopnjo ultrazvočne atenuacije (zlasti tiste, do katere pride zaradi razprševanja) pri temperaturi predmetov med 0 in 60 °C. Primarno je namenjeno za uporabo pri zvarnih spojih s popolno penetracijo, kjer sta tako zvarjeni kot osnovni material feritna.
Kadar so v tem dokumentu določene od materiala odvisne ultrazvočne vrednosti, temeljijo na jeklih z ultrazvočno hitrostjo (5920 ± 50) m/s za longitudinalne valove in (3255 ± 30) m/s za
transverzalne valove.
Ta dokument določa štiri ravni preskusa, pri čemer vsaka označuje drugačno verjetnost zaznavanja nepravilnosti. Navodila o izbiri ravni preskušanja A, B in C so na voljo v dodatku A.
Ta dokument določa, da so zahteve ravni preskušanja D, ki je namenjena za posebno uporabo, skladne s splošnimi zahtevami. Raven preskušanja D je mogoče uporabljati le takrat, ko to določajo specifikacije. To vključuje preskuse kovin, ki niso feritno jeklo, preskuse na zvarih z delno prevaritvijo, preskuse z avtomatizirano opremo in preskuse pri temperaturah predmetov, ki so izven razpona 0–60 °C.
Ta dokument je mogoče uporabiti za ocenjevanje nehomogenosti, za namene sprejemanja, po kateri koli od naslednjih tehnik:
a) vrednotenje, ki primarno temelji na amplitudi dolžine in odmeva nehomogenosti;
b) vrednotenje, ki temelji na karakterizaciji in ugotavljanju velikosti nehomogenosti prek tehnik premikanja preskuševalne glave.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2019
1DGRPHãþD
SIST EN ISO 17640:2018
1HSRUXãLWYHQRSUHVNXãDQMH]YDUQLKVSRMHY8OWUD]YRþQRSUHVNXãDQMH7HKQLNH
VWRSQMHSUHVNXãDQMDLQRFHQMHYDQMH ,62
Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and
assessment (ISO 17640:2018)
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung - Techniken,
Prüfklassen und Bewertung (ISO 17640:2018)
Essais non destructifs des assemblages soudés - Contrôle par ultrasons - Techniques,
niveaux d'essai et évaluation (ISO 17640:2018)
Ta slovenski standard je istoveten z: EN ISO 17640:2018
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 17640
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 17640:2017
English Version
Non-destructive testing of welds - Ultrasonic testing -
Techniques, testing levels, and assessment (ISO
17640:2018)
Essais non destructifs des assemblages soudés -
Contrôle par ultrasons - Techniques, niveaux d'essai et
évaluation (ISO 17640:2018)
This European Standard was approved by CEN on 11 October 2018.
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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17640:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 17640:2018) 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 May 2019, and conflicting national standards shall be
withdrawn at the latest by May 2019.
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 17640:2017.
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 17640:2018 has been approved by CEN as EN ISO 17640:2018 without any modification.
INTERNATIONAL ISO
STANDARD 17640
Fourth edition
2018-10
Non-destructive testing of welds —
Ultrasonic testing — Techniques,
testing levels, and assessment
Essais non destructifs des assemblages soudés — Contrôle par
ultrasons — Techniques, niveaux d'essai et évaluation
Reference number
ISO 17640:2018(E)
©
ISO 2018
ISO 17640:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 17640:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 2
5 General . 3
6 Information required prior to testing . 3
6.1 Items to be specified . 3
6.2 Specific information required before testing . 4
6.3 Written test procedure . 4
7 Requirements for personnel and equipment . 4
7.1 Personnel qualifications . 4
7.2 Test equipment . 4
7.3 Probe parameters . 5
7.3.1 Test frequency . 5
7.3.2 Angles of incidence . 5
7.3.3 Transducer size . 5
7.3.4 Adaptation of probes to curved scanning surfaces . 5
7.3.5 Coupling media . 6
8 Testing volume . 6
9 Preparation of scanning surfaces . 6
10 Parent metal testing . 6
11 Range and sensitivity setting . 7
11.1 General . 7
11.2 Reference for sensitivity setting . 8
11.3 Evaluation levels . 9
11.4 Transfer correction . 9
11.5 Signal-to-noise ratio . 9
12 Testing levels . 9
13 Testing techniques .10
13.1 General .10
13.2 Manual scan path .10
13.3 Testing for imperfections perpendicular to the testing surface .10
13.4 Location of discontinuities .10
13.5 Evaluation of indications .10
13.5.1 General.10
13.5.2 Maximum echo amplitude .10
13.5.3 Discontinuity length.10
13.5.4 Discontinuity height . .10
13.5.5 Characterization of discontinuities .10
14 Test report .11
Annex A (normative) Testing levels for various types of welded joints .13
Bibliography .30
ISO 17640:2018(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 subjec
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.