ISO 24394:2023

Welding for aerospace applications — Qualification test for welders and welding operators — Fusion welding of metallic components

This document specifies requirements for the qualification of welders and welding operators for fusion welding of metallic materials for aerospace applications. NOTE Success in the test is an essential precondition for the qualification of welders and welding operators in new production and repair work in aerospace. However, welding equipment operators do not need to be qualified according to this document.

Soudage pour applications aérospatiales — Épreuve de qualification pour soudeurs et opérateurs soudeurs — Soudage par fusion des composants métalliques

Le présent document spécifie les exigences relatives à la qualification des soudeurs et des opérateurs soudeurs pour le soudage par fusion de composants métalliques destinés à des applications aérospatiales. NOTE La réussite à l'épreuve est une condition préalable indispensable à la qualification des soudeurs et des opérateurs soudeurs intervenant dans la production et la réparation dans l'industrie aérospatiale. En revanche, les opérateurs sur machine de soudage n'ont pas besoin d'être qualifiés conformément au présent document.

Varjenje v aeronavtiki - Preskušanje usposobljenosti varilcev in operaterjev varjenja - Talilno varjenje kovinskih sestavnih delov

Ta dokument določa zahteve za usposobljenost varilcev in operaterjev varjenja za talilno
varjenje kovinskih materialov za uporabo v aeronavtiki.
OPOMBA: Uspešno opravljen preskus je bistven predpogoj za usposobljenost varilcev in operaterjev varjenja pri proizvodnji in popravilu novih delov v aeronavtiki. Vendar ni potrebno, da so v skladu s tem dokumentom usposobljeni operaterji opreme za varjenje.

General Information

• Status: Published
• Publication Date: 13-Sep-2023
• ICS: 25.160.01 - Welding, brazing and soldering in general
• Technical Committee: ISO/TC 44/SC 14 - Welding and brazing in aerospace
• Drafting Committee: ISO/TC 44/SC 14 - Welding and brazing in aerospace
• Current Stage: 6060 - International Standard published
• Start Date: 14-Sep-2023
• Due Date: 18-Apr-2023
• Completion Date: 14-Sep-2023
• Ref Project: SIST ISO 24394:2024 - Welding for aerospace applications — Qualification test for welders and welding operators — Fusion welding of metallic components

Relations

• Revises: ISO 24394:2018 - Welding for aerospace applications — Qualification test for welders and welding operators — Fusion welding of metallic components
• Effective Date: 06-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2024
Nadomešča:
SIST ISO 24394:2020
Varjenje v aeronavtiki - Preskušanje usposobljenosti varilcev in operaterjev
varjenja - Talilno varjenje kovinskih sestavnih delov
Welding for aerospace applications — Qualification test for welders and welding
operators — Fusion welding of metallic components
Soudage pour applications aérospatiales — Épreuve de qualification pour soudeurs et
opérateurs soudeurs — Soudage par fusion des composants métalliques
Ta slovenski standard je istoveten z: ISO 24394:2023
ICS:
03.100.30 Vodenje ljudi Management of human
resources
25.160.01 Varjenje, trdo in mehko Welding, brazing and
spajkanje na splošno soldering in general
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 24394
Third edition
2023-09
Welding for aerospace applications —
Qualification test for welders and
welding operators — Fusion welding
of metallic components
Soudage pour applications aérospatiales — Épreuve de qualification
pour soudeurs et opérateurs soudeurs — Soudage par fusion des
composants métalliques
Reference number
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification test requirements . 3
4.1 General . 3
4.1.1 Specific to the welder qualification test . 3
4.1.2 Specific to the welding operator qualification test. 3
4.2 Welding processes . 4
4.3 Welding positions . 5
4.4 Product types or semi-finished products applicable to welder qualification tests . 5
4.5 Material groups . 9
4.6 Material thickness . 10
4.6.1 Butt weld material thickness . 10
4.6.2 Fillet weld material thickness . 10
4.6.3 Casting repair material thickness. 10
4.7 Special qualification tests . . 10
4.7.1 General requirements . 10
4.7.2 Special qualification tests for welders . 10
4.7.3 Special qualification tests for welding operators . 11
4.8 Designation for qualification test . 11
4.8.1 Welder qualification test . 11
4.8.2 Welding operator qualification test .12
5 Conditions required for welder and welding operator qualification tests .12
5.1 Physical requirements for welder and welding operator .12
5.2 Person responsible for welder and welding operator qualification tests .13
6 Performing the welder and welding operator qualification test .13
6.1 Practical qualification test .13
6.1.1 General requirements .13
6.1.2 Specific requirements for the welder qualification test.13
6.2 Theory test . 14
7 Test pieces .14
8 Examination and testing .18
8.1 General . 18
8.2 Visual inspection and dimensional examination . 19
8.3 Surface imperfection detection . 19
8.4 Radiographic examination . 19
8.5 Metallographic examinations. 19
8.6 Bend test . 20
8.7 Fracture surface examination .20
9 Acceptance criteria .20
10 Qualification test certificate and documentation .20
11 Period of validity of the qualification .21
12 Requalification test .21
Annex A (normative) Test piece acceptance criteria .22
Annex B (normative) Welder or welding operator qualification test record .27
Annex C (informative) Welder qualification test certificate .28
iii
Annex D (informative) Welding operator qualification test certificate .29
Annex E (informative) Guidelines for the theory test .31
Bibliography .34
iv
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 14, Welding and brazing in aerospace.
This third edition cancels and replaces the second edition (ISO 24394:2018), which has been technically
revised.
The main changes are as follows:
— 3.8: note to entry added;
— Table 4 revised;
— editorial revisions.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html. Official
interpretations of ISO/TC 44 documents, where they exist, are available from this page:
https://committee.iso.org/sites/tc44/home/interpretation.html.
v
Introduction
A welder or welding operator qualification test properly passed in accordance with this document
demonstrates that the welder or welding operator concerned has been proven to possess the minimum
degree of skill and knowledge required for the fusion welding of aerospace hard
...

INTERNATIONAL ISO
STANDARD 24394
Third edition
2023-09
Welding for aerospace applications —
Qualification test for welders and
welding operators — Fusion welding
of metallic components
Soudage pour applications aérospatiales — Épreuve de qualification
pour soudeurs et opérateurs soudeurs — Soudage par fusion des
composants métalliques
Reference number
© ISO 2023
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification test requirements . 3
4.1 General . 3
4.1.1 Specific to the welder qualification test . 3
4.1.2 Specific to the welding operator qualification test. 3
4.2 Welding processes . 4
4.3 Welding positions . 5
4.4 Product types or semi-finished products applicable to welder qualification tests . 5
4.5 Material groups . 9
4.6 Material thickness . 10
4.6.1 Butt weld material thickness . 10
4.6.2 Fillet weld material thickness . 10
4.6.3 Casting repair material thickness. 10
4.7 Special qualification tests . . 10
4.7.1 General requirements . 10
4.7.2 Special qualification tests for welders . 10
4.7.3 Special qualification tests for welding operators . 11
4.8 Designation for qualification test . 11
4.8.1 Welder qualification test . 11
4.8.2 Welding operator qualification test .12
5 Conditions required for welder and welding operator qualification tests .12
5.1 Physical requirements for welder and welding operator .12
5.2 Person responsible for welder and welding operator qualification tests .13
6 Performing the welder and welding operator qualification test .13
6.1 Practical qualification test .13
6.1.1 General requirements .13
6.1.2 Specific requirements for the welder qualification test.13
6.2 Theory test . 14
7 Test pieces .14
8 Examination and testing .18
8.1 General . 18
8.2 Visual inspection and dimensional examination . 19
8.3 Surface imperfection detection . 19
8.4 Radiographic examination . 19
8.5 Metallographic examinations. 19
8.6 Bend test . 20
8.7 Fracture surface examination .20
9 Acceptance criteria .20
10 Qualification test certificate and documentation .20
11 Period of validity of the qualification .21
12 Requalification test .21
Annex A (normative) Test piece acceptance criteria .22
Annex B (normative) Welder or welding operator qualification test record .27
Annex C (informative) Welder qualification test certificate .28
iii
Annex D (informative) Welding operator qualification test certificate .29
Annex E (informative) Guidelines for the theory test .31
Bibliography .34
iv
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 14, Welding and brazing in aerospace.
This third edition cancels and replaces the second edition (ISO 24394:2018), which has been technically
revised.
The main changes are as follows:
— 3.8: note to entry added;
— Table 4 revised;
— editorial revisions.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html. Official
interpretations of ISO/TC 44 documents, where they exist, are available from this page:
https://committee.iso.org/sites/tc44/home/interpretation.html.
v
Introduction
A welder or welding operator qualification test properly passed in accordance with this document
demonstrates that the welder or welding operator concerned has been proven to possess the minimum
degree of skill and knowledge required for the fusion welding of aerospace hardware.
vi
INTERNATIONAL STANDARD ISO 24394:2023(E)
Welding for aerospace applications — Qualification test
for welders and welding operators — Fusion welding of
metallic components
1 Scope
This document specifies requirements for the qualification of welders and welding operators for fusion
welding of metallic materials for aerospace applications.
NOTE Success in the test is an essential precondition for the qualification of welders and welding operators
in new production and repair work in aerospace. However, welding equipment operators do not need to be
qualified according to this document.
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 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic materials
— Part 1: Fusion welding
ISO 6947, Welding and all
...

PROJET DE NORME INTERNATIONALE
ISO/DIS 24394
ISO/TC 44/SC 14 Secrétariat: DIN
Début de vote: Vote clos le:
2022-03-15 2022-06-07
Soudage pour applications aérospatiales — Épreuve de
qualification pour soudeurs et opérateurs soudeurs —
Soudage par fusion des composants métalliques
Welding for aerospace applications — Qualification test for welders and welding operators — Fusion
welding of metallic components
ICS: 25.160.01
CE DOCUMENT EST UN PROJET DIFFUSÉ POUR
OBSERVATIONS ET APPROBATION. IL EST DONC
SUSCEPTIBLE DE MODIFICATION ET NE PEUT
ÊTRE CITÉ COMME NORME INTERNATIONALE
AVANT SA PUBLICATION EN TANT QUE TELLE.
Le présent document est distribué tel qu’il est parvenu du secrétariat du comité.
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES
FINS INDUSTRIELLES, TECHNOLOGIQUES ET
COMMERCIALES, AINSI QUE DU POINT DE VUE
DES UTILISATEURS, LES PROJETS DE NORMES
INTERNATIONALES DOIVENT PARFOIS ÊTRE
CONSIDÉRÉS DU POINT DE VUE DE LEUR
POSSIBILITÉ DE DEVENIR DES NORMES
POUVANT SERVIR DE RÉFÉRENCE DANS LA
RÉGLEMENTATION NATIONALE.
Numéro de référence
LES DESTINATAIRES DU PRÉSENT PROJET ISO/DIS 24394:2022(F)
SONT INVITÉS À PRÉSENTER, AVEC LEURS
OBSERVATIONS, NOTIFICATION DES DROITS
DE PROPRIÉTÉ DONT ILS AURAIENT
ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.

ISO/TC 44/SC 14
ƒ–‡ǣʹͲʹʹǦͲ͵
ISO/DIS 24394:2022(F)
ISO/DIS 24394:2022
ȀͶͶȀͳͶ
‡…”±–ƒ”‹ƒ–ǣ
Soudage pour applications aérospatiales — Épreuve de qualification pour
soudeurs et opérateurs soudeurs — Soudage par fusion des composants
métalliques
Welding for aerospace applications — Qualification test for welders and welding operators — Fusion welding
of metallic components
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2022
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]

Web: www.iso.org
Publié en Suisse
ii
ISO/DIS 24394:2022 (F)
Sommaire Page
Avant-propos . v
Introduction . vi
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Exigences relatives aux épreuves de qualification . 3
4.1 Généralités . 3
4.1.1 Spécifiques à l'épreuve de qualification des soudeurs . 3
4.1.2 Spécifiques à l'épreuve de qualification des opérateurs soudeurs . 4
4.2 Procédés de soudage . 4
4.3 Positions de soudage . 5
4.4 Types de produits/produits semi-finis, applicables aux épreuves de qualification des soudeurs . 5
4.5 Groupes de matériaux . 9
4.6 Épaisseur de matériau . 9
4.6.1 Épaisseur de matériau sur soudures bout à bout . 9
4.6.2 Épaisseur de matériau sur soudures d’angle . 10
4.6.3 Épaisseur de matériau pour la réparation de pièces moulées . 10
4.7 Épreuves spéciales de qualification . 10
4.7.1 Exigences générales . 10
4.7.2 Épreuves spéciales de qualification pour les soudeurs . 10
4.7.3 Épreuves spéciales de qualification pour les opérateurs soudeurs . 10
4.8 Désignation de l'épreuve de qualification . 11
4.8.1 Épreuve de qualification des soudeurs. 11
4.8.2 Épreuve de qualification des opérateurs soudeurs . 11
5 Conditions requises pour le passage d'épreuves de qualification des soudeurs et des
opérateurs soudeurs . 12
5.1 Exigences physiques relatives au soudeur et à l'opérateur soudeur . 12
5.2 Personne responsable des épreuves de qualification des soudeurs et des opérateurs
soudeurs . 12
6 Déroulement de l'épreuve de qualification des soudeurs et des opérateurs soudeurs . 13
6.1 Épreuve pratique de qualification . 13
6.1.1 Exigences générales . 13
6.1.2 Exigences spécifiques à l'épreuve de qualification des soudeurs . 13
6.2 Examen théorique . 13
7 Assemblages de qualification . 13
8 Contrôles, examens et essais . 16
8.1 Généralités . 16
8.2 Contrôles visuel et dimensionnel . 18
8.3 Détection des imperfections de surface . 18
8.4 Contrôle par radiographie. 18
8.5 Examens métallographiques . 18
8.6 Essai de pliage . 18
8.7 Examen de la surface de rupture . 18
9 Critères d'acceptation . 19
10 Certificat et documentation de qualification . 19
ISO/DIS 24394:2022 (F)
11 Durée de validité de la qualification . 19
12 Épreuve de requalification . 20
Annexe A (normative) Critères d’acceptation des assemblages de qualification . 21
Annexe B (normative) Modèle de rapport d'épreuve de qualification de soudeur/d’opérateur
soudeur conformément à l’ISO 24394 . 27
Annexe C (informative) Certificat de qualification de soudeur . 28
Annexe D (informative) Certificat de qualification d'opérateur soudeur . 29
Annexe E (informative) Lignes directrices relatives à l'examen théorique . 31
E.1 Généralités . 31
E.2 Lignes directrices relatives au contenu . 31
E.2.1 Matériels de soudage . 31
E.2.1.1 Soudage oxyacétylénique . 31
E.2.1.2 Soudage à l'arc . 31
E.2.2 Procédé de soudage . 32
E.2.2.1 Soudage oxyacétylénique (311) . 32
E.2.2.2 Soudage manuel à l'arc avec électrode enrobée (111) . 32
E.2.2.3 Soudage à l'arc avec électrode fusible sous protection gazeuse (114, 131, 135, 136, 141, 15)
............................................................................................................................................................................. 32
E.2.2.4 Soudage à l'arc sous flux (en poudre) (121, 125) . 32
E.2.3 Métaux de base . 32
E.2.4 Produits consommables de soudage. 32
E.2.5 Mesures de sécurité . 33
E.2.5.1 Généralités . 33
E.2.5.2 Soudage oxyacétylénique . 33
E.2.5.3 Tous les procédés de soudage à l'arc . 33
E.2.6 Descriptif du mode opératoire de soudage (DMOS) ou descriptif du mode opératoire de
soudage préliminaire (DMOS-P) . 33
E.2.7 Préparation des bords à souder et représentation des soudures. 33
E.2.8 Imperfections . 33
E.2.9 Qualification du soudeur/de l'opérateur soudeur . 34
Bibliographie . 35

iv © ISO 2022 – Tous droits réservés

ISO/DIS 24394:2022 (F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales
est en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une
étude a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO, participent également aux
travaux. L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce
qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des
différents critères d’approbation requis pour les différents types de documents ISO. Le présent
document a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC,
Partie 2 (voir www.i
...