IEC 60987:2007

Nuclear power plants - Instrumentation and control important to safety - Hardware design requirements for computer-based systems

Is applicable to computer-system hardware for systems of Class 1 and 2 (as defined by IEC 61513) in nuclear power plants. This new edition reflects recent developments in computer system hardware design, the use of pre-developed hardware and changes in terminology.

Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants pour la sûreté - Exigences applicables à la conception du matériel des systèmes informatisés

Est applicable au matériel des systèmes informatisés des centrales nucléaires de puissance de Classes 1 et 2 (telles que définies dans la CEI 61513). Cette nouvelle édition tient compte des développements récemment survenus dans le domaine de la conception du matériel des systèmes informatisés, l'utilisation de matériels prédéveloppés commercialement disponibles sur étagère et l'évolution de la terminologie.

General Information

• Status: Published
• Publication Date: 26-Aug-2007
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.120.20 - Nuclear power plants. Safety
• Technical Committee: SC 45A - Instrumentation, control and electrical power systems of nuclear facilities
• Drafting Committee: WG 3 - TC 45/SC 45A/WG 3
• Current Stage: DELPUB - Deleted Publication
• Start Date: 12-Nov-2018
• Completion Date: 03-Feb-2021

Relations

• Amended By: IEC 60987:2007/AMD1:2013 - Amendment 1 - Nuclear power plants - Instrumentation and control important to safety - Hardware design requirements for computer-based systems
• Effective Date: 05-Sep-2023
• Revised: IEC 60987:2021 - Nuclear power plants - Instrumentation and control important to safety - Hardware requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60987
Edition 2.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Hardware design requirements for computer-based systems

Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Exigences applicables à la conception du matériel
des systèmes informatisés
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 la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

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3, rue de Varembé
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Switzerland
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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.

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IEC 60987
Edition 2.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Hardware design requirements for computer-based systems

Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Exigences applicables à la conception du matériel
des systèmes informatisés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 27.120.20 ISBN 2-8318-9285-6

– 2 – 60987 © IEC:2007
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.8
1.1 General .8
1.2 Use of this standard for pre-developed (for example, COTS) hardware
assessment .8
1.3 Applicability of this standard to programmable logic devices development.9
2 Normative references .9
3 Terms and definitions .10
4 Project structure .12
4.1 General .12
4.2 Project subdivision .12
4.3 Quality assurance .12
5 Hardware requirements .13
5.1 General .13
5.2 Functional and performance requirements.14
5.3 Reliability/Availability requirements .15
5.4 Environmental withstand requirements .16
5.5 Documentation requirements.16
6 Design and development .17
6.1 General .17
6.2 Design activities .17
6.3 Reliability .18
6.4 Maintenance.18
6.5 Interfaces .19
6.6 Modification.19
6.7 Power failure .19
6.8 Component selection.19
6.9 Design documentation.19
7 Verification and validation .20
7.1 General .20
7.2 Verification plan .20
7.3 Independence of verification.21
7.4 Methods .21
7.5 Documentation .22
7.6 Discrepancies.22
7.7 Changes and modifications .22
7.8 Installation verification.22
7.9 Validation .22
7.10 Verification of pre-existing equipment platforms .22
8 Qualification .23
9 Manufacture .23
10 Installation and commissioning .23
11 Maintenance.23
11.1 Maintenance requirements .24

60987 © IEC:2007 – 3 –
11.2 Failure data.24
11.3 Maintenance documentation.25
12 Modification.26
13 Operation .26

Annex A (informative) Overview of system life cycle .27
Annex B (informative) Outline of qualification.28
Annex C (informative) Example of maintenance procedure .29

Bibliography.30

– 4 – 60987 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL
IMPORTANT TO SAFETY –
HARDWARE DESIGN REQUIREMENTS
FOR COMPUTER-BASED SYSTEMS
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property
...

IEC 60987 ®
Edition 2.1 2013-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants – Instrumentation and control important to safety –
Hardware design requirements for computer-based systems

Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Exigences applicables à la conception du matériel
des systèmes informatisés
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 la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
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 corrigenda or an amendment might have been published.

Useful links:
IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org
The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and
by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and
committee,…). definitions in English and French, with equivalent terms in
It also gives information on projects, replaced and additional languages. Also known as the International
withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc
Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication
details all new publications released. Available on-line and or need further assistance, please contact the
also once a month by email. Customer Service Centre: [e-mail].

A propos de la CEI
La Commission Electrotechnique Internationale (CEI) 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 CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.

Liens utiles:
Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org
La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes
publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000
référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que
Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.
publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique
International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.
Just Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur
Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions
contactez-nous: [e-mail].
IEC 60987 ®
Edition 2.1 2013-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants – Instrumentation and control important to safety –

Hardware design requirements for computer-based systems

Centrales nucléaires de puissance – Instrumentation et contrôle-commande

importants pour la sûreté – Exigences applicables à la conception du matériel

des systèmes informatisés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-0674-4

– 2 – 60987  IEC:2007+A1:2013

CONTENTS
FOREWORD . 4

INTRODUCTION . 6

1 Scope . 8

1.1 General . 8

1.2 Use of this standard for pre-developed (for example, COTS)

hardware assessment. 8

1.3 Applicability of this standard to programmable logic devices development . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Project structure . 12
4.1 General . 12
4.2 Project subdivision . 12
4.3 Quality assurance . 13
5 Hardware requirements . 13
5.1 General . 13
5.2 Functional and performance requirements . 14
5.3 Reliability/Availability requirements . 15
5.4 Environmental withstand requirements . 16
5.5 Documentation requirements . 17
6 Design and development . 17
6.1 General . 17
6.2 Design activities . 17
6.3 Reliability . 18
6.4 Maintenance . 19
6.5 Interfaces . 19
6.6 Modification . 19
6.7 Power failure . 19
6.8 Component selection . 19
6.9 Design documentation . 19
7 Verification and validation . 20
7.1 General . 20

7.2 Verification plan . 20
7.3 Independence of verification . 21
7.4 Methods . 21
7.5 Documentation . 22
7.6 Discrepancies. 22
7.7 Changes and modifications . 22
7.8 Installation verification . 22
7.9 Validation . 22
7.10 Verification of pre-existing equipment platforms . 22
8 Qualification . 23
9 Manufacturing . 23
9.1 Quality assurance . 23
9.2 Training of personnel. 24

60987  IEC:2007+A1:2013 – 3 –

9.3 Planning and organisation of the manufacturing activities. . 24

9.4 Input data . 25

9.5 Purchasing and procurement . 25

9.6 Production . 27

10 Installation and commissioning . 29

11 Maintenance . 30

11.1 Maintenance requirements . 30

11.2 Failure data . 31

11.3 Maintenance documentation . 32

12 Modification . 32
13 Operation . 32

Annex A (informative) Overview of system life cycle . 33
Annex B (informative) Outline of qualification . 34
Annex C (informative) Example of maintenance procedure . 35

Bibliography . 36

– 4 – 60987  IEC:2007+A1:2013

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL
IMPORTANT TO SAFETY –
HARDWARE DESIGN REQUIREMENTS
FOR COMPUTER-BASED SYSTEMS
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 o
...