Non-destructive testing of welds - Magnetic particle testing (ISO 17638:2016)

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.

Zerstörungsfreie Prüfung von Schweißverbindungen - Magnetpulverprüfung (ISO 17638:2016)

Contrôle non destructif des assemblages soudés - Contrôle par magnétoscopie (ISO 17638:2016)

ISO 17638:2016 spécifie les techniques pour la détection par magnétoscopie des défauts de surface des soudures de matériaux ferromagnétiques, y compris les zones affectées thermiquement, à l'aide de la technique d'aimantation. Les techniques sont appropriées pour la plupart des procédés de soudage et des configurations d'assemblages. Des variantes des techniques de base donnant une sensibilité plus élevée ou plus faible sont décrites dans l'Annexe A.
ISO 17638:2016 ne spécifie pas des niveaux d'acceptation pour les indications. Des informations complémentaires sur les niveaux d'acceptation peuvent être trouvées dans l'ISO 23278 ou dans les normes d'application ou les normes de produit.

Neporušitveno preskušanje zvarov - Preskušanje z magnetnimi delci (ISO 17638:2016)

Ta dokument določa tehnike za odkrivanje površinskih nepravilnosti zvarov pri feromagnetnih materialih, vključno s področji, izpostavljenimi toploti, s preskušanjem z magnetnimi delci. Tehnike so primerne za večino postopkov varjenja in konfiguracije spojev. Različice osnovnih tehnik, ki vključujejo višjo ali nižjo občutljivost preskušanja, so opisane v dodatku A. Ta dokument ne določa stopenj sprejemljivosti za indikacije. Več informacij o stopnjah sprejemljivosti za indikacije je mogoče najti v standardu ISO 23278, standardih za proizvode ali standardih uporabe.

General Information

Status
Published
Public Enquiry End Date
09-Jul-2015
Publication Date
08-Feb-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Feb-2017
Due Date
09-Apr-2017
Completion Date
09-Feb-2017

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SLOVENSKI STANDARD
SIST EN ISO 17638:2017
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
SIST EN ISO 17638:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17638:2017
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SIST EN ISO 17638:2017
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.
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SIST EN ISO 17638:2017
EN ISO 17638:2016 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 17638:2017
EN ISO 17638:2016 (E)
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.

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SIST EN ISO 17638:2017
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SIST EN ISO 17638:2017
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
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SIST EN ISO 17638:2017
ISO 17638:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© 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

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 2016 – All rights reserved
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SIST EN ISO 17638:2017
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 2016 – All rights reserved iii
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SIST EN ISO 17638:2017
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
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SIST EN ISO 17638:2017
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 particle testing — Part 1: General principles

ISO 9934-2, Non-destructive testing — Magnetic particle testing — Part 2: Detection media

ISO 9934-3, Non-destructive testing — Magnetic particle testing — Part 3: Equipment

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 12707 and ISO 17635 apply.

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 Safety precautions

Special consideration shall be given to toxic, inflammable and/or volatile materials, electrical safety

and unfiltered UV radiation.

Magnetic particle testing often creates high magnetic fields close to the object under test and the

magnetising equipment. Items sensitive to these fields should be excluded from such areas.

5 General
5.1 Information required prior to testing
Prior to testing, the following items shall be specified (where applicable):
a) specific test procedure;
b) certification requirements for NDT personnel;
© ISO 2016 – All rights reserved 1
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SIST EN ISO 17638:2017
ISO 17638:2016(E)
c) extent of coverage;
d) state of manufacture;
e) testing techniques to be used;
f) overall performance test;
g) any demagneti
...

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