EN ISO/ASTM 52942:2020

Additive manufacturing - Qualification principles - Qualifying machine operators of laser metal powder bed fusion machines and equipment used in aerospace applications (ISO/ASTM 52942:2020)

This document specifies requirements for the qualification of operators of laser metal powder bed fusion machines and equipment for additive manufacturing in aerospace applications.
This document is applicable if the operator qualification testing is required by contract or by application standards in the field of aerospace.

Additive Fertigung - Grundsätze der Qualifizierung - Prüfung von Anlagenbedienern für pulverbettbasierte Laserstrahlanlagen und Ausrüstung für metallische Werkstoffe für Luft- und Raumfahrtanwendungen (ISO/ASTM 52942:2020)

Dieses Dokument legt Anforderungen an die Qualifizierung von Bedienern pulverbettbasierter Laserstrahlanlagen und Ausrüstung für metallische Werkstoffe für die additive Fertigung in Luft- und Raumfahrtanwendungen fest.
Diese Norm ist anzuwenden, wenn eine Prüfung des Bedieners durch den Vertrag oder durch das Anwendungsregelwerk im Luft- und Raumfahrtbereich verlangt wird.

Fabrication additive - Principes de qualification - Qualification des opérateurs machine des machines à fusion laser sur lit de poudre et équipements utilisés dans les applications aérospatiales (ISO/ASTM 52942:2020)

Le présent document spécifie les exigences pour la qualification des opérateurs de machines de fusion laser sur lit de poudre métallique et des équipements de fabrication additive dans les applications aérospatiales.
Le présent document est applicable si l'essai de qualification de l'opérateur est exigé par un contrat ou par les normes d'application.

Dodajalna izdelava - Kvalifikacija - Kvalifikacija upravljavcev strojev in opreme za spajanje kovinskega prahu na podlagi z laserskim žarkom za letalsko in vesoljsko industrijo (ISO/ASTM 52942:2020)

General Information

• Status: Published
• Publication Date: 15-Sep-2020
• Withdrawal Date: 30-Mar-2021
• ICS: 03.100.30 - Management of human resources
• ICS: 25.030 - Additive manufacturing
• Technical Committee: CEN/TC 438 - Additive Manufacturing
• Drafting Committee: CEN/TC 438 - Additive Manufacturing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 16-Sep-2020
• Completion Date: 16-Sep-2020
• Ref Project: SIST EN ISO/ASTM 52942:2020 - Additive manufacturing - Qualification principles - Qualifying machine operators of laser metal powder bed fusion machines and equipment used in aerospace applications (ISO/ASTM 52942:2020)

Overview

EN ISO/ASTM 52942:2020 - "Additive manufacturing - Qualification principles - Qualifying machine operators of laser metal powder bed fusion machines and equipment used in aerospace applications" - defines requirements for operator qualification for laser metal powder bed fusion (L-PBF) systems when such testing is required by contract or aerospace application standards. Published by CEN/ISO/ASTM, the standard focuses on ensuring operators are competent to run L-PBF equipment for aerospace production through structured assessment and recordkeeping.

Key topics and requirements

• Scope and applicability: Applies to qualification testing of L-PBF machine operators used in aerospace when mandated by contract or application standards.
• Qualification components:
  • Theoretical test - assesses knowledge relevant to L-PBF processes (content guidance in Annex A).
  • Practical test - hands-on assessment following an Additive Manufacturing Procedure Specification (APS); Annex B and D provide content and APS example.
  • Evidence of visual acuity - vision requirements consistent with NDT/aviation guidance.
• Essential variables and ranges:
  • Qualification is defined by essential variables; working outside a defined range requires requalification.
  • Key variables include powder material groups (Material groups A–F: steels, titanium, aluminium, nickel/cobalt, etc.) and machine model.
• Qualification governance:
  • A designated coordinator is required to manage qualification, requalification and disqualification.
  • The standard provides requirements for qualification test certificates, validity periods, requalification and supplementary testing.
• Supporting documentation: Includes example operator certificate (Annex C) and guidance on Preliminary APS (PAPS).

Applications and users

EN ISO/ASTM 52942:2020 is aimed at organizations and roles involved in aerospace additive manufacturing:

• Aerospace OEMs and suppliers implementing L-PBF production and supplier contracts
• Quality, training and operations managers establishing operator training and assessment programs
• Additive manufacturing facilities seeking standardized operator competence evidence
• Contracting authorities requiring compliant operator qualification as part of procurement
• Examiners and examining bodies conducting assessments and issuing certificates

Practical benefits include reducing process variation, improving safety and part quality, demonstrating compliance with aerospace procurement requirements, and standardizing operator capability across suppliers.

Related standards

Normative references include:

• ISO/ASTM 52900 (fundamentals and vocabulary)
• ISO/ASTM 52921 (terminology, coordinate systems, test methodologies)
• ISO 18490 (vision acuity evaluation)
• EN 4179 and NAS 410 (personnel qualification guidance for aerospace NDT)

Keywords: EN ISO/ASTM 52942:2020, additive manufacturing, laser metal powder bed fusion, operator qualification, aerospace, APS, L-PBF.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2020
Dodajalna izdelava - Kvalifikacija - Kvalifikacija upravljavcev strojev in opreme za
spajanje kovinskega prahu na podlagi z laserskim žarkom za letalsko in vesoljsko
industrijo (ISO/ASTM 52942:2020)
Additive manufacturing - Qualification principles - Qualifying machine operators of laser
metal powder bed fusion machines and equipment used in aerospace applications
(ISO/ASTM 52942:2020)
Additive Fertigung - Grundsätze der Qualifizierung - Prüfung von Anlagenbedienern für
pulverbettbasierte Laserstrahlanlagen und Ausrüstung für metallische Werkstoffe für
Luft- und Raumfahrtanwendungen (ISO/ASTM 52942:2020)
Fabrication additive - Principes de qualification - Qualification des opérateurs machine
des machines à fusion laser sur lit de poudre et équipements utilisés dans les
applications aérospatiales (ISO/ASTM 52942:2020)
Ta slovenski standard je istoveten z: EN ISO/ASTM 52942:2020
ICS:
03.100.30 Vodenje ljudi Management of human
resources
25.030 3D-tiskanje Additive manufacturing
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.

EN ISO/ASTM 52942
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 03.100.30; 25.030
English Version
Additive manufacturing - Qualification principles -
Qualifying machine operators of laser metal powder bed
fusion machines and equipment used in aerospace
applications (ISO/ASTM 52942:2020)
Fabrication additive - Principes de qualification - Additive Fertigung - Grundsätze der Qualifizierung -
Qualification des opérateurs machine des machines à Standard Richtlinie zur Prüfung von Anlagenbedienern
fusion laser sur lit de poudre et équipements utilisés für pulverbettbasierte Laserstrahlanlagen zur
dans les applications aérospatiales (ISO/ASTM additiven Fertigung für Luft- und
52942:2020) Raumfahrtanwendungen (ISO/ASTM 52942:2020)
This European Standard was approved by CEN on 24 August 2020.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/ASTM 52942:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO/ASTM 52942:2020) has been prepared by Technical Committee ISO/TC 261
"Additive manufacturing" in collaboration with Technical Committee CEN/TC 438 “Additive
Manufacturing” the secretariat of which is held by AFNOR.
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 March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
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.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/ASTM 52942:2020 has been approved by CEN as EN ISO/ASTM 52942:2020 without
any modification.
INTERNATIONAL ISO/ASTM
STANDARD 52942
First edition
2020-08
Additive manufacturing —
Qualification principles — Qualifying
machine operators of laser metal
powder bed fusion machines and
equipment used in aerospace
applications
Fabrication additive — Principes de qualification — Qualification des
opérateurs machine des machines à fusion laser sur lit de poudre et
équipements utilisés dans les applications aérospatiales
Reference number
ISO/ASTM 52942:2020(E)
©
ISO/ASTM International 2020
ISO/ASTM 52942:2020(E)
© ISO/ASTM International 2020
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. In the United States, such requests should be sent to ASTM International.
ISO copyright office ASTM International
CP 401 • Ch. de Blandonnet 8 100 Barr Harbor Drive, PO Box C700
CH-1214 Vernier, Geneva West Conshohocken, PA 19428-2959, USA
Phone: [phone] Phone: [phone]
Fax: [phone]
Email: [e-mail] Email: [e-mail]
Website: www.iso.org Website: www.astm.org
Published in Switzerland
ii © ISO/ASTM International 2020 – All rights reserved

ISO/ASTM 52942:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification . 2
4.1 General . 2
4.2 Essential variables and-range of qualification . 2
4.2.1 General. 2
4.2.2 Powder material group . 2
4.2.3 Machine model . 3
4.3 Evidence of visual acuity . 3
4.4 Theoretical test . 3
4.5 Practical test . 3
5 Qualification test certificate . 4
6 Validity of testing . 4
6.1 General . 4
6.2 Period of validity . 4
6.3 Requalification test. 4
6.4 Supplementary test . 5
Annex A (normative) Content of the theoretical assessment . 6
Annex B (normative) Content of the practical assessment . 7
Annex C (informative) Example of qualification test certificate for operators of laser metal
powder bed fusion machines . 9
Annex D (informative) Example of an additive manufacturing procedure specification (APS) .11
Bibliography .13
© ISO/ASTM International 2020 – All rights reserved iii

ISO/ASTM 52942:2020(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 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 ISO/TC 261, Additive manufacturing, in cooperation with ASTM F 42,
Additive Manufacturing Technologies, on the basis of a partnership agreement between ISO and ASTM
International with the aim to create a common set of ISO/ASTM standards on additive manufacturing
and in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 438, Additive manufacturing, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
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.
iv © ISO/ASTM International 2020 – All rights reserved

INTERNATIONAL STANDARD ISO/ASTM 52942:2020(E)
Additive manufacturing — Qualification principles —
Qualifying machine operators of laser metal powder
bed fusion machines and equipment used in aerospace
applications
1 Scope
This document specifies requirements for the qualification of operators of laser metal powder bed
fusion machines and equipment for additive manufacturing in aerospace applications.
This document is applicable if the operator qualification testing is required by contract or by application
standards in the field of aerospace.
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/ASTM 52900, Additive manufacturing — General principles — Part 1: Fundamentals and vocabulary
ISO/ASTM 52921, Standard terminology for additive manufacturing — Coordinate systems and test
methodologies
ISO 18490, Non-destructive testing — Evaluation of vision acuity of NDT personnel
EN 4179, Aerospace series — Qualification and approval of personnel for non-destructive testing
NAS 410, NAS CERTIFICATION & QUALIFICATION OF NONDESTRUCTIVE TEST PERSONNEL
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/ASTM 52900, ISO/ASTM 52921
and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
...

SLOVENSKI STANDARD
01-november-2020
Aditivna proizvodnja - Kvalifikacija - Kvalifikacija upravljavcev strojev in opreme
za selektivno lasersko pretaljevanje kovinskega prahu za letalsko in vesoljsko
industrijo (ISO/ASTM 52942:2020)
Additive manufacturing - Qualification principles - Qualifying machine operators of laser
metal powder bed fusion machines and equipment used in aerospace applications
(ISO/ASTM 52942:2020)
Additive Fertigung - Grundsätze der Qualifizierung - Prüfung von Anlagenbedienern für
pulverbettbasierte Laserstrahlanlagen und Ausrüstung für metallische Werkstoffe für
Luft- und Raumfahrtanwendungen (ISO/ASTM 52942:2020)
Fabrication additive - Principes de qualification - Qualification des opérateurs machine
des machines à fusion laser sur lit de poudre et équipements utilisés dans les
applications aérospatiales (ISO/ASTM 52942:2020)
Ta slovenski standard je istoveten z: EN ISO/ASTM 52942:2020
ICS:
03.100.30 Vodenje ljudi Management of human
resources
25.030 3D-tiskanje Additive manufacturing
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.

EN ISO/ASTM 52942
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 03.100.30; 25.030
English Version
Additive manufacturing - Qualification principles -
Qualifying machine operators of laser metal powder bed
fusion machines and equipment used in aerospace
applications (ISO/ASTM 52942:2020)
Fabrication additive - Principes de qualification - Additive Fertigung - Grundsätze der Qualifizierung -
Qualification des opérateurs machine des machines à Standard Richtlinie zur Prüfung von Anlagenbedienern
fusion laser sur lit de poudre et équipements utilisés für pulverbettbasierte Laserstrahlanlagen zur
dans les applications aérospatiales (ISO/ASTM additiven Fertigung für Luft- und
52942:2020) Raumfahrtanwendungen (ISO/ASTM 52942:2020)
This European Standard was approved by CEN on 24 August 2020.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/ASTM 52942:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO/ASTM 52942:2020) has been prepared by Technical Committee ISO/TC 261
"Additive manufacturing" in collaboration with Technical Committee CEN/TC 438 “Additive
Manufacturing” the secretariat of which is held by AFNOR.
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 March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
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.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/ASTM 52942:2020 has been approved by CEN as EN ISO/ASTM 52942:2020 without
any modification.
INTERNATIONAL ISO/ASTM
STANDARD 52942
First edition
2020-08
Additive manufacturing —
Qualification principles — Qualifying
machine operators of laser metal
powder bed fusion machines and
equipment used in aerospace
applications
Fabrication additive — Principes de qualification — Qualification des
opérateurs machine des machines à fusion laser sur lit de poudre et
équipements utilisés dans les applications aérospatiales
Reference number
ISO/ASTM 52942:2020(E)
©
ISO/ASTM International 2020
ISO/ASTM 52942:2020(E)
© ISO/ASTM International 2020
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. In the United States, such requests should be sent to ASTM International.
ISO copyright office ASTM International
CP 401 • Ch. de Blandonnet 8 100 Barr Harbor Drive, PO Box C700
CH-1214 Vernier, Geneva West Conshohocken, PA 19428-2959, USA
Phone: [phone] Phone: [phone]
Fax: [phone]
Email: [e-mail] Email: [e-mail]
Website: www.iso.org Website: www.astm.org
Published in Switzerland
ii © ISO/ASTM International 2020 – All rights reserved

ISO/ASTM 52942:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification . 2
4.1 General . 2
4.2 Essential variables and-range of qualification . 2
4.2.1 General. 2
4.2.2 Powder material group . 2
4.2.3 Machine model . 3
4.3 Evidence of visual acuity . 3
4.4 Theoretical test . 3
4.5 Practical test . 3
5 Qualification test certificate . 4
6 Validity of testing . 4
6.1 General . 4
6.2 Period of validity . 4
6.3 Requalification test. 4
6.4 Supplementary test . 5
Annex A (normative) Content of the theoretical assessment . 6
Annex B (normative) Content of the practical assessment . 7
Annex C (informative) Example of qualification test certificate for operators of laser metal
powder bed fusion machines . 9
Annex D (informative) Example of an additive manufacturing procedure specification (APS) .11
Bibliography .13
© ISO/ASTM International 2020 – All rights reserved iii

ISO/ASTM 52942:2020(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 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 ISO/TC 261, Additive manufacturing, in cooperation with ASTM F 42,
Additive Manufacturing Technologies, on the basis of a partnership agreement between ISO and ASTM
International with the aim to create a common set of ISO/ASTM standards on additive manufacturing
and in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 438, Additive manufacturing, in accordance with the agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
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.
iv © ISO/ASTM International 2020 – All rights reserved

INTERNATIONAL STANDARD ISO/ASTM 52942:2020(E)
Additive manufacturing — Qualification principles —
Qualifying machine operators of laser metal powder
bed fusion machines and equipment used in aerospace
applications
1 Scope
This document specifies requirements for the qualification of operators of laser metal powder bed
fusion machines and equipment for additive manufacturing in aerospace applications.
This document is applicable if the operator qualification testing is required by contract or by application
standards in the field of aerospace.
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/ASTM 52900, Additive manufacturing — General principles — Part 1: Fundamentals and vocabulary
ISO/ASTM 52921, Standard terminology for additive manufacturing — Coordinate systems and test
methodologies
ISO 18490, Non-destructive testing — Evaluation of vision acuity of NDT personnel
EN 4179, Aerospace series — Qualification and approval of personnel for non-destructive testing
NAS 410, NAS CERTIFICATION & QUALIFICATION OF NONDESTRUCTIVE TEST PERSONNEL
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/ASTM 52900, ISO/ASTM 52921
and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
...