Guidance on human aspects of dependability

IEC 62508:2010 provides guidance on the human aspects of dependability, and the human-centred design methods and practices that can be used throughout the whole system life cycle to improve dependability performance. This standard describes qualitative approaches. This first edition cancels and replaces IEC/PAS 62508 published in 2007.

Lignes directrices relatives aux facteurs humains dans la sûreté de fonctionnement

La CEI 62508:2010 fournit des lignes directrices relatives aux facteurs humains dans la sûreté de fonctionnement, ainsi que des méthodes et pratiques de conception centrées sur l'intervention de l'homme et qui peuvent être utilisées tout au long du cycle de vie du système afin d'améliorer les performances de sûreté de fonctionnement. La présente norme décrit des approches qualitatives. La présente édition annule et remplace le CEI/PAS 62508 publié en 2007.

General Information

Status
Published
Publication Date
27-Jun-2010
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
31-Jul-2010
Completion Date
28-Jun-2010
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IEC 62508 ®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Guidance on human aspects of dependability

Lignes directrices relatives aux facteurs humains dans la sûreté de
fonctionnement
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IEC 62508 ®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Guidance on human aspects of dependability

Lignes directrices relatives aux facteurs humains dans la sûreté de
fonctionnement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XA
CODE PRIX
ICS 03.120.01 ISBN 978-2-88912-023-9
– 2 – 62508 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms, definitions and abbreviations .7
3.1 Terms and definitions .7
3.2 Abbreviations .10
4 Human aspects.10
4.1 Overview .10
4.2 Components of the system and their interactions.11
4.2.1 Introductory remark .11
4.2.2 Goals.11
4.2.3 Humans.12
4.2.4 Machine (interactive system) .12
4.2.5 Social and physical environment.13
4.2.6 Output .13
4.2.7 Feedback from the machine to the person .13
4.3 Human characteristics .14
4.3.1 Introductory remark .14
4.3.2 Human limitations.14
4.3.3 Comparison of humans and machines .14
4.4 Human performance shaping factors .15
4.4.1 External performance shaping factors.16
4.4.2 Internal performance shaping factors.16
4.5 Human reliability analysis (HRA) .16
4.5.1 Overview .16
4.5.2 Identifying the potential for human error .17
4.5.3 Analysing human failures to define countermeasures .17
4.5.4 Quantification of human reliability.18
4.6 Critical systems.18
4.7 Human-centred design guidelines.19
4.8 Human-centred design process .20
4.8.1 Human-centred design principles within the design process .20
4.8.2 Human-centred design activities .21
5 Human-oriented design in the system lifecycle .21
5.1 Overview .21
5.2 The system life cycle .22
5.3 Integrating human-oriented design in systems engineering.23
6 Human-oriented design at each life cycle stage .24
6.1 Overview .24
6.2 Concept/definition stage.24
6.2.1 Concept.24
6.2.2 Human-centred design planning .24
6.2.3 Understanding needs.25
6.2.4 System requirements.25
6.2.5 Human-centred design requirements .25

62508 © IEC:2010 – 3 –
6.3 Design/development.26
6.4 Realization/implementation.26
6.5 Operation/maintenance .27
6.6 Enhancement .27
6.7 Retirement/decommission .28
6.8 Outsourcing projects and related human-centred design issues.28
7 Human-centred design methods .29
7.1 Classification of human-centred design activities.29
7.2 Applications of human-centred design methods.30
Annex A (informative) Examples of HRA methods.31
Annex B (informative) Summary of human-oriented design activities and their impact
on system dependability .37
Annex C (informative) Best practices for human-centred design.41
Bibliography.47

Figure 1 – Components of the system and their interactions .11
Figure 2 – Human performance shaping factors .16
Figure 3 – Simple model of human information processing.17
Figure 4 – Human-centred design activities .21
Figure 5 – Human aspects of the system life cycle.23

Table 1 – People who influence dependability.12
Table A.1 – HRA methods and their application .31
Table B.1 – Automation .37
Table B.2 – Design for maintainability.37
Table B.3 – Computer-human interface.38
Table B.4 – Incorporation of displays, controls and alarm functions .39
Table B.5 – Incorporation of input devices .39
Table B.6 – Environment.40
Table B.7 – Safety .40
Table B.8 – Security .40
Table C.1 – Examples of methods and techniques that contribute to best practices .41

– 4 – 62508 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDANCE ON HUMAN ASPECTS OF DEPENDABILITY

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 Spe
...

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