ISO 4993:2024

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 4993
ISO/TC 17/SC 11
Steel and iron castings —
Secretariat: ANSI
Radiographic testing
Voting begins on:
2023-12-22
Pièces moulées en acier ou en fonte — Contrôle radiographique
Voting terminates on:
2024-02-16
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 4993:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 4993:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 4993
ISO/TC 17/SC 11
Steel and iron castings —
Secretariat: ANSI
Radiographic testing
Voting begins on:
Pièces moulées en acier ou en fonte — Contrôle radiographique
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© 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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 4993:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 4993:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Basis of purchase .2
5 General . 2
6 Testing parameters . 2
7 Personnel qualifications . .3
8 Testing arrangements .3
9 Film position plan . 3
9.1 Film position plan for pilot radiography .
...

DRAFT INTERNATIONAL STANDARD
ISO/DISFDIS 4993:2022(E)
ISO/TC 17/SC 11
Secretariat: ANSI
Date: 2022-11-232023-12-07
Steel and iron castings — Radiographic testing
Pièces moulées en acier ou en fonte — Contrôle radiographique
FDIS stage

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ISO/DISFDIS 4993:20222023(E)
© ISO 20222023
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
EmailE-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ii © ISO 2022 – All rights reserved
 © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/DISFDIS 4993:20222023(E)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Basis of purchase . 2
5 General . 2
6 Testing parameters . 2
7 Personnel qualifications . 3
8 Testing arrangements . 3
9 Film position plan . 3
10 Rejection/acceptance criteria . 4
11 Foundry responsibility . 4
Annex A (informative) Testing arrangements . 6
Annex B (informative) Techniques for increasing the covered thickness range . 15
Annex C (informative) Choice of radiation source . 19

© ISO 2023 – All rights reserved iii
© ISO 2022 – All rights reserved iii

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ISO/DISFDIS 4993:20222023(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 criteri
...