IEC 63046:2020

Nuclear power plants - Electrical power system - General requirements

IEC 63046:2020

Name:IEC 63046:2020   Standard name:Nuclear power plants - Electrical power system - General requirements
Standard number:IEC 63046:2020   language:English and French language
Release Date:19-Oct-2020   technical committee:SC 45A - Instrumentation, control and electrical power systems of nuclear facilities
Drafting committee:WG 11 - TC 45/SC 45A/WG 11   ICS number:27.120.20 - Nuclear power plants. Safety

IEC 63046
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants – Electrical power system – General requirements

Centrales nucléaires de puissance – Système d'alimentation électrique –
Exigences générales




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
CH-1211 Geneva 20
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and withdrawn publications.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

.
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:
[email protected] .
IEC 63046
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants – Electrical power system – General requirements

Centrales nucléaires de puissance – Système d'alimentation électrique –

Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-8817-7

– 2 – IEC 63046:2020 © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
1.1 General . 9
1.2 Application: new and pre-existing plants . 11
1.3 Framework . 11
1.4 Interaction with level 2 standards . 11
2 Normative references . 13
3 Terms and definitions . 14
4 Abbreviated terms . 23
5 Overall Electrical Power System life cycle . 24
6 Architecture of Electrical Power System: identification of requirements. 25
6.1 Objectives . 25
6.2 Safety requirements applicable to the electrical architecture design . 26
6.2.1 Defence in Depth . 26
6.2.2 Application of Single Failure Criterion . 26
6.2.3 Management of the Common Cause Failure . 26
6.2.4 Loss Of Off-site Power conditions . 26
6.2.5 Station Black Out conditions . 27
6.2.6 Loss of Electrical Power conditions . 27
6.2.7 Application of internal and external Hazards . 27
6.2.8 Nuclear security requirements . 28
6.2.9 Classification requirements . 28
6.2.10 Probabilistic requirements . 28
6.3 Electrical requirements . 28
6.3.1 Requirements coordinated with the electric grid operator . 28
6.3.2 Electrical disturbances . 29
6.4 Functional performance requirements . 29
6.5 Maintenance requirements . 30
7 Design of the electrical architecture . 30
7.1 Objectives . 30
7.2 Safety design provision . 30
7.2.1 Defence in Depth in the Electrical Power System . 30
7.2.2 Single Failure in the Electrical Power System . 31
7.2.3 Common Cause Failure in the Electrical Power System . 31
7.2.4 Provisions for coping with Loss Of Off-site Power . 37
7.2.5 Provisions for coping with Station Black Out . 38
7.2.6 Provisions to avoid or reduce Loss of Electrical Power . 38
7.2.7 Classification consideration . 38
7.2.8 Provisions to achieve the reliability target for the Electrical Power System . 39
7.3 Electrical design provision . 40
7.3.1 General . 40
7.3.2 Coordination with the grid . 40
7.3.3 Design to achieve electrical requirements . 40
7.4 Functional and performance design provisions . 46
7.4.1 General . 46

7.4.2 Electrical Power System studies . 46
7.4.3 Design of the Interruptible Power Supply System . 49
7.4.4 Design of the Uninterruptible Power Supply System . 49
7.5 Maintenance . 50
7.5.1 Consideration of the maintenance in the electrical design . 50
7.6 Multi-unit shared electrical power systems . 51
7.7 Electrical system layout . 51
7.8 Supporting and associated systems for the Electrical Power System . 51
7.9 Overall quality assurance programs . 52
7.10 Requirements for output documentation . 53
7.10.1 General . 53
7.10.2 Architecture principles . 54
7.10.3 Single line diagrams . 55
8 Sub-system requirements . 55
8.1 Electrical Power System basis requirements . 55
8.1.1 General . 55
8.1.2 System Design . 56
8.1.3 Single line diagram . 56
8.2 Equipment design specification . 56
8.3 Equipment requirements . 56
8.4 AC Interruptible Electrical Power Supply System . 56
8.5 AC/DC Uninterruptible Power Supply System . 57
8.6 Coordination and interaction with power grid . 57
8.7 Earthing . 57
9 Verification of the architecture of the Electrical Power System . 57
9.1 General . 57
9.2 Computerised tools and models verification . 57
9.2.1 Electrical Power System verification . 57
9.2.2 Layout of electrical power systems and equipment verification . 57
9.3 Test requirements . 58
...

  • Relates Information
  • ISO 8130-9:1992

    ISO 8130-9:1992 - Coating powders
    09-28
  • EN 352-2:2020/FprA1

    EN 352-2:2021/oprA1:2023
    09-28
  • IEC TS 61158-4:1999

    IEC TS 61158-4:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 4: Data Link protocol specification Released:3/24/1999 Isbn:2831847656
    09-28
  • HD 566 S1:1990

    HD 566 S1:1998
    09-28
  • ISO 5131:1982/Amd 1:1992

    ISO 5131:1982/Amd 1:1992
    09-28
  • EN 60598-2-22:1990

    EN 60598-2-22:1996
    09-27
  • ISO 8504-2:1992

    ISO 8504-2:1992 - Preparation of steel substrates before application of paints and related products -- Surface preparation methods
    09-27
  • EN 12165:2024

    prEN 12165:2022
    09-27
  • IEC TS 61158-6:1999

    IEC TS 61158-6:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application Layer protocol specification Released:3/24/1999 Isbn:2831847613
    09-27
  • ISO 4252:1992

    ISO 4252:1992 - Agricultural tractors -- Operator's workplace, access and exit -- Dimensions
    09-27