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IEC 60987
Edition 3.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Hardware requirements
Centrales nucléaires de puissance – Systèmes d’instrumentation et de contrôle-
commande importants pour la sûreté – Exigences applicables au matériel
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IEC 60987
Edition 3.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Hardware requirements
Centrales nucléaires de puissance – Systèmes d’instrumentation et de contrôle-
commande importants pour la sûreté – Exigences applicables au matériel
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-9319-5
– 2 – IEC 60987:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Symbols and abbreviated terms . 17
5 Hardware safety lifecycle . 17
5.1 General . 17
5.2 Hardware safety lifecycle for class 1 and class 2 . 20
5.2.1 Project structure for class 1 and class 2 . 20
5.2.2 Quality management for class 1 and class 2 . 20
5.2.3 Verification of hardware for class 1 and class 2 . 21
5.3 Hardware safety lifecycle for class 3 . 23
5.3.1 Project structure and quality management for class 3 . 23
5.3.2 Verification of hardware for class 3 . 24
6 Hardware aspects of system requirements specification . 24
6.1 Hardware aspects of system requirements specification for class 1 and
class 2 . 24
6.1.1 General requirements for class 1 and class 2 . 24
6.1.2 Functional and performance requirements for class 1 and class 2 . 25
6.1.3 Reliability requirements for class 1 and class 2 . 26
6.1.4 Environmental conditions requirements for class 1 and class 2 . 27
6.1.5 Manufacturing requirements for class 1 and class 2 . 27
6.1.6 Documentation requirements for class 1 and class 2 . 27
6.2 Hardware aspects of system requirements specification for class 3. 27
6.2.1 General requirements for class 3 . 27
6.2.2 Reliability for class 3 . 27
6.2.3 Environmental conditions requirements for class 3 . 28
6.2.4 Documentation requirements for class 3 . 28
7 Selection of pre-existing components . 28
7.1 Selection of pre-existing components for class 1 and class 2 . 28
7.2 Selection of pre-existing components for class 3 . 29
8 Hardware aspects of system detailed design and implementation . 29
8.1 Hardware aspects of system detailed design and implementation for class 1
and class 2 . 29
8.1.1 General requirement for class 1 and class 2 . 29
8.1.2 Design activities for class 1 and class 2 . 30
8.1.3 Reliability for class 1 and class 2 . 30
8.1.4 Maintenance for class 1 and class 2 . 31
8.1.5 Power failure for class 1 and class 2 . 32
8.1.6 Design documentation for class 1 and class 2 . 32
8.2 Hardware aspects of system detailed design and implementation for class 3 . 33
8.2.1 General requirement for class 3 . 33
8.2.2 Reliability for class 3 . 33
8.2.3 Maintenance for class 3 . 33
9 Equipment (component) manufacturing . 33
9.1 Equipment (component) manufacturing for class 1 and class 2 . 33
9.1.1 Manufacturing quality management for class 1 and class 2 . 33
9.1.2 Training of personnel for class 1 and class 2 . 34
9.1.3 Planning and organisation of the manufacturing activities for class 1
and class 2 . 35
9.1.4 Input data for class 1 and class 2 . 35
9.1.5 Purchasing and procurement for class 1 and class 2 . 35
9.1.6 Manufacturing for class 1 and class 2 . 36
9.2 Equipment (component) manufacturing for class 3 . 41
9.2.1 Manufacturing quality management for class 3 . 41
9.2.2 Training of personnel for class 3 . 41
9.2.3 Input data for class 3 . 41
9.2.4 Purchasing and procurement for class 3 . 42
9.2.5 Assessment of electronic modules for class 3 . 42
9.2.6 Identification and traceability for class 3 . 43
9.2.7 Protection and storage of product for class 3 . 43
9.2.8 Manufacturing of electronic modules for class 3 . 44
10 Hardware aspects of system installation . 44
10.1 General . 44
11 Hardware aspects of system modification . 45
11.1 General . 45
12 Operation and maintenance . 45
12.1 General . 45
12.2 Operation and maintenance requirements . 46
12.3 Failure data . 46
12.3.1 Failure data acquired during equipment operation constitutes a major
source of information which can be used to improve: . 46
12.4 Operation and maintenance documentation . 47
Annex A (informative) Typical documentation. 48
Bibliography . 49
Figure 1 – System safety lifecycle (informative, as defined by IEC 61513) . 18
Figure 2 – Hardware related activities in the system safety lifecycle . 19
Table A.1 – Typical documentation .
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