IEC 60987:2007

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
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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
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