EN ISO 17638:2016

SLOVENSKI STANDARD
01-marec-2017
1DGRPHãþD
SIST EN ISO 17638:2010
Neporušitveno preskušanje zvarov - Preskušanje z magnetnimi delci (ISO
17638:2016)
Non-destructive testing of welds - Magnetic particle testing (ISO 17638:2016)
Zerstörungsfreie Prüfung von Schweißverbindungen - Magnetpulverprüfung (ISO
17638:2016)
Contrôle non destructif des assemblages soudés - Contrôle par magnétoscopie (ISO
17638:2016)
Ta slovenski standard je istoveten z: EN ISO 17638:2016
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 17638
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2016
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 17638:2009
English Version
Non-destructive testing of welds - Magnetic particle
testing (ISO 17638:2016)
Contrôle non destructif des assemblages soudés - Zerstörungsfreie Prüfung von Schweißverbindungen -
Magnétoscopie (ISO 17638:2016) Magnetpulverprüfung (ISO 17638:2016)
This European Standard was approved by CEN on 2 October 2016.

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
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17638:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 17638:2016) 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 2017, and conflicting national standards shall be
withdrawn at the latest by May 2017.
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 ISO 17638:2009.
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 17638:2016 has been approved by CEN as EN ISO 17638:2016 without any modification.
INTERNATIONAL ISO
STANDARD 17638
Second edition
2016-10-15
Non-destructive testing of welds —
Magnetic particle testing
Contrôle non destructif des assemblages soudés — Magnétoscopie
Reference number
ISO 17638:2016(E)
©
ISO 2016
ISO 17638:2016(E)
© ISO 2016, 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
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ii © ISO 2016 – All rights reserved

ISO 17638:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Safety precautions . 1
5 General . 1
5.1 Information required prior to testing . 1
5.2 Additional pre-test information . 2
5.3 Personnel qualification . 2
5.4 Surface conditions and preparation . 2
5.5 Magnetizing . 2
5.5.1 Magnetizing equipment . 2
5.5.2 Verification of magnetization . 3
5.6 Application techniques . 3
5.6.1 Field directions and testing area . 3
5.6.2 Typical magnetic testing techniques . 6
5.7 Detection media . 9
5.7.1 General. 9
5.7.2 Verification of detection media performance . 9
5.8 Viewing conditions .10
5.9 Application of detection media .10
5.10 Overall performance test .10
5.11 False indications .10
5.12 Recording of indications .10
5.13 Demagnetization .11
5.14 Test report .11
Annex A (informative) Variables affecting the sensitivity of magnetic particle testing .13
Bibliography .15
ISO 17638:2016(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 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: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee
SC 5, Testing and inspection of welds.
This second edition cancels and replaces the first edition (ISO 17638:2003), 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 2016 – All rights reserved

INTERNATIONAL STANDARD ISO 17638:2016(E)
Non-destructive testing of welds — Magnetic particle testing
1 Scope
This document specifies techniques for detection of surface imperfections in welds in ferromagnetic
materials, including the heat affected zones, by means of magnetic particle testing. The techniques are
suitable for most welding processes and joint configurations. Variations in the basic techniques that
will provide a higher or lower test sensitivity are described in Annex A.
This document does not specify acceptance levels of the indications. Further information on acceptance
levels for indications may be found in ISO 23278 or in product or application standards.
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 3059, Non-destructive testing — Penetrant testing and magnetic particle testing — Viewing conditions
ISO 9934-1:2015, Non-destructive testing — Magnetic pa
...