IEC 60300-3-4:2007

IEC 60300-3-4
Edition 2.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dependability management –
Part 3-4: Application guide – Guide to the specification of dependability
requirements
Gestion de la sûreté de fonctionnement –
Partie 3-4: Guide d'application – Spécification d'exigences de sûreté de
fonctionnement
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IEC 60300-3-4
Edition 2.0 2007-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dependability management –
Part 3-4: Application guide – Guide to the specification of dependability
requirements
Gestion de la sûreté de fonctionnement –
Partie 3-4: Guide d'application – Spécification d'exigences de sûreté de
fonctionnement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
W
CODE PRIX
ICS 03.100.40; 03.120.01 ISBN 2-8318-9308-9

– 2 – 60300-3-4 © IEC:2007
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms and definitions .9
4 General considerations for dependability specifications .9
4.1 The need for dependability .9
4.2 Requirements and goals.11
4.3 Systems .11
4.4 Demonstration of achievement of requirements .13
4.4.1 Concept.13
4.4.2 Activities.14
4.5 Contracting for dependability.15
4.6 Types of specification.16
4.7 Derivation of dependability specifications .17
5 Dependability management .18
6 Availability.19
6.1 General .19
6.1.1 Choice of dependability characteristic.19
6.1.2 Relationship between availability, reliability and maintainability .19
6.2 Availability specifications.20
6.2.1 Quantitative requirements.20
6.2.2 Qualitative requirements.20
6.3 Provision of availability verification and validation .20
6.3.1 General .20
6.3.2 Verification and validation by testing.21
6.3.3 Verification and validation by analysis .21
7 Reliability .21
7.1 General .21
7.2 Reliability specification.22
7.2.1 Quantitative requirements.22
7.2.2 Qualitative requirements.23
7.3 Reliability verification and validation.24
7.3.1 General .24
7.3.2 Verification and validation by testing.24
7.3.3 Verification and validation by analysis .25
8 Maintainability .25
8.1 General .25
8.2 Maintainability specification.25
8.2.1 Quantitative requirements.25
8.2.2 Qualitative requirements.26
8.3 Maintainability verification and validation.26
9 Maintenance support .27
9.1 General .27
9.2 Maintenance support specification.27

60300-3-4 © IEC:2007 – 3 –
9.2.1 Quantitative requirements.27
9.2.2 Qualitative requirements.28
9.3 Maintenance support verification and validation .28

Annex A (informative) Reference standards for verification and validation techniques.29
Annex B (informative) Examples of reliability, maintainability, maintenance support
and availability requirements .31

Bibliography.33

Figure 1 – Relationship between cost and reliability.10
Figure 2 – System elements.12

Table A.1 – Techniques for dependability verification and validation through testing.29
Table A.2 – Techniques for dependability verification and validation through analysis.30

– 4 – 60300-3-4 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
DEPENDABILITY MANAGEMENT –
Part 3-4: Application guide –
Guide to the specification of dependability requirements

FOREWORD
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