SIST EN ISO 32679:2026

SLOVENSKI STANDARD
01-januar-2026
Neporušitvene preiskave - Radiografsko preskušanje - Ugotavljanje velikosti
industrijskih radiografskih gama izvorov (ISO 32679:2024)
Non-destructive testing - Radiographic testing - Determination of the size of industrial
radiographic gamma sources (ISO 32679:2024)
Zerstörungsfreie Prüfung - Durchstrahlungsprüfung - Bestimmung der Strahlergrößen
von industriell genutzten Radio-Nukliden (ISO 32679:2024)
Essais non destructifs - Contrôle radiographique - Détermination de la dimension des
sources de radiographie industrielle gamma (ISO 32679:2024)
Ta slovenski standard je istoveten z: EN ISO 32679:2025
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 32679
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2025
EUROPÄISCHE NORM
ICS 19.100 Supersedes EN 12679:2018
English Version
Non-destructive testing - Radiographic testing -
Determination of the size of industrial radiographic
gamma sources (ISO 32679:2024)
Essais non destructifs - Contrôle radiographique - Zerstörungsfreie Prüfung - Durchstrahlungsprüfung -
Détermination de la dimension des sources de Bestimmung der Strahlergrößen von industriell
radiographie industrielle gamma (ISO 32679:2024) genutzten Radio-Nukliden (ISO 32679:2024)
This European Standard was approved by CEN on 29 September 2025.

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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 32679:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 32679:2024 has been prepared by Technical Committee ISO/TC 135 "Non-destructive
testing” of the International Organization for Standardization (ISO) and has been taken over as
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 April 2026, and conflicting national standards shall be
withdrawn at the latest by April 2026.
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.
This document supersedes EN 12679:2018.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 32679:2024 has been approved by CEN as EN ISO 32679:2025 without any modification.

International
Standard
ISO 32679
First edition
Non-destructive testing —
2024-06
Radiographic testing —
Determination of the size of industrial
radiographic gamma sources
Essais non destructifs — Contrôle radiographique —
Détermination de la dimension des sources de radiographie
industrielle gamma
Reference number
ISO 32679:2024(en) © ISO 2024
ISO 32679:2024(en)
© ISO 2024
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
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 32679:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test procedure . 2
4.1 Test alignment .2
4.2 Test practice .3
5 Requirements to digital equipment . 3
5.1 Digital Detectors .3
5.2 Test parameters for digital radiography .4
6 Measurement and determination of size d of the radiographic gamma source. 4
6.1 Measurement with film .4
6.2 Measurement with digital detectors .4
6.3 Determination of source size .6
7 Test report . 6
Bibliography . 7

iii
ISO 32679:2024(en)
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 CEN/TC 138, Non-destructive testing (as EN
12679:2018) and was adopted (without modification other than that (those) given below) by Technical
Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 5, Radiographic testing.
The main changes are as follows:
— revised definitions 3.1, 3.3 and 3.4;
— deleted definition 3.5;
— added Formula (1) defining the geometrical magnification factor;
— updated figures;
— editorial corrections.
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
International Standard ISO 32679:2024(en)
Non-destructive testing — Radiographic testing — Determination
of the size of industrial radiographic gamma sources
1 Scope
This document specifies a test procedure for determination of the size of industrial radiographic gamma
sources of 0,5 mm or greater, made from the radionuclides Iridium 192, Ytterbium 169, Selenium 75 or Cobalt
60, by a radiography method with X-rays. The source size of a gamma radiation source is an important factor
which affects the image quality of gamma ray images.
The source size is determined with an accuracy of ±10 % but typically not better than ±0,1 mm.
The source size is provided by the manufacturer as the mechanical dimension of the source insert. A
measurement can be required if the manufacturing process is validated or monitored after implementation
of the source into the holder.
This document can be used for other radionuclides after validation.
The standard test method ASTM E1114 provides further information on the measurement of the Ir-192
source size, the characterization of the source shape, and its correct assembly and packaging.
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 19232-5, Non-destructive testing — Image quality of radiographs — Part 5: Determination of the image
unsharpness value using duplex wire-type image quality indicators
ISO 16371-1, Non-destructive testing — Industrial computed radiography with storage phosphor imaging plates
— Part 1: Classification of systems
ASTM E 2002 - 22, Standard Practice for Determining Total Image Unsharpness and Basic Spatial Resolution in
Radiography and Radioscopy
ASTM E 2597/2597M - 22, Standard Practice for Manufacturing Characterization of Dig
...