EN ISO 23133:2022

SLOVENSKI STANDARD
01-marec-2023
Varnost pred kritičnostjo - Usposabljanje za varnost pred kritičnostjo pri
obratovanju (ISO 23133:2021)
Nuclear criticality safety - Nuclear criticality safety training for operations (ISO
23133:2021)
Kritikalitätssicherheit - Kritikalitätssicherheitstraining für Betriebe (ISO 23133:2021)
Sûreté-criticité - Formation à la sûreté-criticité dans le cadre de l’exploitation (ISO
23133:2021)
Ta slovenski standard je istoveten z: EN ISO 23133:2022
ICS:
03.100.30 Vodenje ljudi Management of human
resources
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 23133
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 03.100.30; 27.120.20
English Version
Nuclear criticality safety - Nuclear criticality safety
training for operations (ISO 23133:2021)
Sûreté-criticité - Formation à la sûreté-criticité dans le Kritikalitätssicherheit - Kritikalitätssicherheitstraining
cadre de l'exploitation (ISO 23133:2021) für Betriebe (ISO 23133:2021)
This European Standard was approved by CEN on 18 December 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23133:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 23133:2021 has been prepared by Technical Committee ISO/TC 85 "Nuclear energy,
nuclear technologies, and radiological protection” of the International Organization for Standardization
(ISO) and has been taken over as EN ISO 23133:2022 by Technical Committee CEN/TC 430 “Nuclear
energy, nuclear technologies, and radiological protection” 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 June 2023, and conflicting national standards shall be
withdrawn at the latest by June 2023.
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.
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 23133:2021 has been approved by CEN as EN ISO 23133:2022 without any modification.

INTERNATIONAL ISO
STANDARD 23133
First edition
2021-01
Nuclear criticality safety — Nuclear
criticality safety training for
operations
Sûreté-criticité — Formation à la sûreté-criticité dans le cadre de
l’exploitation
Reference number
ISO 23133:2021(E)
©
ISO 2021
ISO 23133:2021(E)
© ISO 2021
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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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 23133:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Operations training . 2
4.1 General . 2
4.2 Operations nuclear criticality safety training program . 2
4.3 Objectives. 2
4.4 Training of operations staff . 3
4.5 Training of operations supervisors . 3
4.6 Training of management . 3
5 Role in the training program . 4
5.1 General . 4
5.2 Operations staff . 4
5.3 Operations supervisors . 4
5.4 Management . 4
5.5 Nuclear criticality safety staff . 4
5.6 Training coordinator . 4
5.7 Criticality trainer . 5
6 Content of training . 5
7 Delivery of training . 5
8 Evaluation of training and testing . 6
9 Maintenance of training . 6
10 Records . 7
Bibliography . 8
ISO 23133:2021(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.
ISO 23133 was prepared by Technical Committee ISO/TC 85, Nuclear energy, nuclear technologies, and
radiological protection, Subcommittee SC 5, Nuclear installations, processes and technologies.
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 2021 – All rights reserved

ISO 23133:2021(E)
Introduction
Experience of criticality accidents and evidence of operations history worldwide has indicated that
human errors on different levels (management, operations staff, and/or operations supervisors),
through lack of understanding or ignorance of nuclear criticality safety, have contributed to accidents.
In order to maintain nuclear criticality safety for facilities handling and processing fissile material it is
necessary to ensure the operations staff, operations supervisors, and management are suitably trained
in nuclear criticality safety. This document was developed in response to demand for a definition of the
minimum nuclear criticality safety training requirements for operations staff, operations supervisors,
and management.
This training is distinct from that of th
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