IEC 62859:2016
(Main)Nuclear power plants - Instrumentation and control systems - Requirements for coordinating safety and cybersecurity
Nuclear power plants - Instrumentation and control systems - Requirements for coordinating safety and cybersecurity
IEC 62859:2016 provides a framework to manage the interactions between safety and cybersecurity for nuclear power plant (NPP) systems, taking into account current IEC standards addressing these issues and the specifics of nuclear I&C programmable digital systems. This standard establishes requirements and guidance to:
- integrate cybersecurity provisions in nuclear I&C architectures and systems, which are fundamentally tailored for safety;
- avoid potential conflicts between safety and cybersecurity provisions;
- aid the identification and the leveraging of the potential synergies between safety and cybersecurity.
Centrales nucléaires de puissance - Systèmes d'instrumentation et de contrôle-commande - Exigences pour coordonner sûreté et cybersécurité
L'IEC 62859:2016 fournit un cadre de travail permettant de gérer les interactions entre sûreté et cybersécurité pour les systèmes dans les NPP, en prenant en compte les normes du SC 45A traitant de ces questions et des particularités des systèmes programmables numériques utilisés pour l'I&C dans le nucléaire. La présente norme document établit des exigences et des lignes directrices pour:
- intégrer des dispositions en matière de cybersécurité à des architectures et systèmes d'I&C nucléaires, fondamentalement conçus pour la sûreté;
- éviter d'éventuelles divergences entre les dispositions en matière de sûreté et de cybersécurité;
- favoriser l'identification et l'exploitation des synergies potentielles entre la sûreté et la cybersécurité.
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IEC 62859 ®
Edition 1.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control systems – Requirements for
coordinating safety and cybersecurity
Centrales nucléaires de puissance – Systèmes d'instrumentation et de contrôle-
commande – Exigences pour coordonner sûreté et cybersécurité
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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International Standards for all electrical, electronic and related technologies.
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IEC 62859 ®
Edition 1.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control systems – Requirements for
coordinating safety and cybersecurity
Centrales nucléaires de puissance – Systèmes d'instrumentation et de contrôle-
commande – Exigences pour coordonner sûreté et cybersécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-3719-9
– 2 – IEC 62859:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Symbols and abbreviations . 11
5 Coordinating safety and cybersecurity at the overall architecture level . 12
5.1 General . 12
5.2 Fundamental and generic principles . 12
5.3 Thematic requirements and recommendations . 13
5.3.1 Delineation of security zones . 13
5.3.2 Provisions for coping with common cause failures (including diversity) . 13
5.3.3 Separation provisions . 14
5.3.4 Data communications . 14
6 Coordinating safety and cybersecurity at the individual system level. 14
6.1 General . 14
6.2 Fundamental and generic principles . 14
6.3 Safety and cybersecurity coordination during the I&C system lifecycle . 15
6.3.1 General . 15
6.3.2 Requirements and planning activities . 15
6.3.3 Design activities . 15
6.3.4 Implementation activities . 16
6.3.5 Verification and validation activities . 16
6.3.6 Installation and acceptance testing activities . 16
6.3.7 Operations and maintenance activities. 16
6.3.8 Change management . 16
6.3.9 Decommissioning activities . 16
6.4 Selected technical aspects of I&C systems constrained by safety and
cybersecurity . 17
6.4.1 General . 17
6.4.2 Logical access control for HMIs of I&C programmable digital systems in
control rooms . 17
6.4.3 Software modification . 17
6.4.4 Logging and audit capability . 18
6.4.5 Use of cryptography by I&C systems . 18
6.4.6 System availability and function continuity . 19
7 Organizational and operational issues . 19
7.1 Governance and responsibilities . 19
7.2 Coordination between safety and cybersecurity staff during operations . 19
7.3 Safety and cybersecurity culture . 19
7.4 Emergency response management . 19
Annex A (informative) Rationale for, and notes related to, the scope of this document . 21
A.1 General . 21
A.2 Inclusion of I&C programmable digital system not important to safety . 21
A.3 Exclusion of physical security, room access control and site security
surveillance systems . 21
A.4 Exclusion of non-malevolent actions and events . 21
A.5 Exclusion of development tools and platforms . 22
Bibliography . 23
– 4 – IEC 62859:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL SYSTEMS –
REQUIREMENTS FOR COORDINATING SAFETY AND CYBERSECURITY
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of c
...
IEC 62859 ®
Edition 1.1 2019-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants – Instrumentation and control systems – Requirements
for coordinating safety and cybersecurity
Centrales nucléaires de puissance – Systèmes d'instrumentation et de
contrôle-commande – Exigences pour coordonner sûreté et cybersécurité
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, 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
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - Electropedia - www.electropedia.org
webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au
La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.
IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC 62859 ®
Edition 1.1 2019-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants – Instrumentation and control systems – Requirements
for coordinating safety and cybersecurity
Centrales nucléaires de puissance – Systèmes d'instrumentation et de
contrôle-commande – Exigences pour coordonner sûreté et cybersécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-7484-2
IEC 62859 ®
Edition 1.1 2019-10
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Nuclear power plants – Instrumentation and control systems – Requirements
for coordinating safety and cybersecurity
Centrales nucléaires de puissance – Systèmes d'instrumentation et de
contrôle-commande – Exigences pour coordonner sûreté et cybersécurité
– 2 – IEC 62859:2016+AMD1:2019 CSV
© IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Symbols and abbreviations . 11
5 Coordinating safety and cybersecurity at the overall architecture level . 12
5.1 General . 12
5.2 Fundamental and generic principles . 12
5.3 Thematic requirements and recommendations . 13
5.3.1 Delineation of security zones . 13
5.3.2 Provisions for coping with common cause failures (including diversity) . 13
5.3.3 Separation provisions . 14
5.3.4 Data communications . 14
6 Coordinating safety and cybersecurity at the individual system level. 14
6.1 General . 14
6.2 Fundamental and generic principles . 14
6.3 Safety and cybersecurity coordination during the I&C system lifecycle . 15
6.3.1 General . 15
6.3.2 Requirements and planning activities . 15
6.3.3 Design activities . 15
6.3.4 Implementation activities . 16
6.3.5 Verification and validation activities . 16
6.3.6 Installation and acceptance testing activities . 16
6.3.7 Operations and maintenance activities. 16
6.3.8 Change management . 16
6.3.9 Decommissioning activities . 16
6.4 Selected technical aspects of I&C systems constrained by safety and
cybersecurity . 17
6.4.1 General . 17
6.4.2 Logical access control for HMIs of I&C programmable digital systems in
control rooms . 17
6.4.3 Software modification . 17
6.4.4 Logging and audit capability . 18
6.4.5 Use of cryptography by I&C systems . 18
6.4.6 System availability and function continuity . 19
7 Organizational and operational issues . 19
7.1 Governance and responsibilities . 19
7.2 Coordination between safety and cybersecurity staff during operations . 19
7.3 Safety and cybersecurity culture . 19
7.4 Emergency response management . 20
Annex A (informative) Rationale for, and notes related to, the scope of this document . 21
A.1 General . 21
A.2 Inclusion of I&C programmable digital system not important to safety . 21
A.3 Exclusion of physical security, room access control and site security
surveillance systems . 21
© IEC 2019
A.4 Exclusion of non-malevolent actions and events . 21
A.5 Exclusion of development tools and platforms . 22
Bibliography . 23
– 4 – IEC 62859:2016+AMD1:2019 CSV
© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL SYSTEMS –
REQUIREMENTS FOR COORDINATING SAFETY AND CYBERSECURITY
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access
...
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