prEN IEC 62508:2024
(Main)Guidance on human aspects of dependability
Guidance on human aspects of dependability
Leitlinien zu den menschlichen Aspekten der Zuverlässigkeit
Lignes directrices relatives aux facteurs humains dans la sûreté de fonctionnement
Napotki o človeških vidikih zanesljivosti
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2024
Napotki o človeških vidikih zanesljivosti
Guidance on human aspects of dependability
Leitlinien zu den menschlichen Aspekten der Zuverlässigkeit
Lignes directrices relatives aux facteurs humains dans la sûreté de fonctionnement
Ta slovenski standard je istoveten z: prEN IEC 62508:2024
ICS:
03.120.01 Kakovost na splošno Quality in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
56/2030/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62508 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-01-19 2024-04-12
SUPERSEDES DOCUMENTS:
56/1955/CD, 56/1991B/CC
IEC TC 56 : DEPENDABILITY
SECRETARIAT: SECRETARY:
United Kingdom Ms Stephanie Lavy
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Guidance on human aspects of dependability
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
– 2 – IEC CDV 62508 © IEC:2023
1 CONTENTS
3 FOREWORD . 5
4 INTRODUCTION . 7
5 1 Scope . 8
6 2 Normative references . 8
7 3 Terms and definitions and abbreviations . 8
8 3.1 Terms and definitions. 8
9 3.2 Abbreviated terms . 11
10 4 Dependability elements of a socio-technical system . 11
11 4.1 Overview . 11
12 4.2 Task element . 13
13 4.3 Human element . 13
14 4.3.1 Role of Humans in a System . 13
15 4.3.2 Dependability characteristics of humans . 14
16 4.4 Machine element. 15
17 4.5 Organization and team elements . 15
18 4.5.1 Overview . 15
19 4.5.2 Teamwork/operational environment . 15
20 4.5.3 Organizational environment and structure . 16
21 4.5.4 Physical environment . 16
22 4.5.5 Cultural environment . 16
23 4.6 Feedback within the socio-technical system . 16
24 5 Human factors influence on dependability . 17
25 5.1 Overview . 17
26 5.2 Influence of the human element on dependability . 18
27 5.2.1 Overview . 18
28 5.2.2 Human strengths and limitations in an operational environment . 18
29 5.2.3 Performance shaping factors (human factors) . 19
30 5.2.4 External human factors . 20
31 5.2.5 Internal human factors . 20
32 5.2.6 Information Processing . 20
33 5.3 Influence of the machine element on dependability . 21
34 5.4 Influence of the task element on dependability . 21
35 5.4.1 General . 21
36 5.4.2 Allocation of tasks to humans vs. machines to optimize dependability . 21
37 6 Human dependability program: Identifying the steps to improve human
38 dependability . 22
39 6.1 Introduction . 22
40 6.2 Analysing dependability failures to define countermeasures . 22
41 6.2.1 Overview . 22
42 6.2.2 Human failures . 22
43 6.2.3 Machine failures . 24
44 6.2.4 Human- System interaction failures . 24
45 6.3 Analysis of dependability data . 24
46 6.4 Improving human dependability . 25
47 6.4.1 Minimizing risk due to human-related failures . 25
IEC CDV 62508 © IEC:2023 – 3 –
48 6.4.2 Human decision-making. 25
49 6.5 Improving machine dependability through a human factors approach . 26
50 6.6 Improving socio-technical system dependability . 26
51 7 Human dependability at each life-cycle stage . 27
52 7.1 Overview of human dependability aspects of life cycle stages . 27
53 7.2 Concept/Definition stage . 27
54 7.2.1 Concept stage . 27
55 7.2.2 Human-centred design planning . 28
56 7.2.3 System requirements . 28
57 7.2.4 Human-centred design requirements . 28
58 7.3 Design and development stage . 29
59 7.3.2 Human-centred design guidelines . 29
60 7.3.3 Human-centred design activities . 30
61 7.3.5 Human dependability analysis in design and development . 31
62 7.4 Realization/implementation stage . 32
63 7.5 Operations and maintenance stage . 32
64 7.6 Enhancement stage . 33
65 7.7 Retirement/decommissioning stage . 33
66 Annex A (informative) Examples of Human Reliability Analysis (HRA) methods . 34
67 Annex B (informative) Summary of human-oriented design activities and their impact
68 on system dependability . 39
69 B.1 Overview . 39
70 B.2 Automation . 39
71 B.3 Design for maintainability . 39
72 B.4 Human-machine interface . 40
73 B.5 Incorporation of displays, controls, and alarm functions . 40
74 B.6 Incorporation of input devices . 41
75 B.7 Environment . 41
76 B.8 Safety . 41
77 B.9 Security . 41
78 Annex C (informative) Best practices for human-centred design. 42
79 Bibliography . 47
81 Figure 1 – Components and interaction of a socio-technical system . 12
82 Figure 2 – Performance shaping factors (PSFs) that can influence human dependability . 20
83 Figure 3 – Model of typical human information processing . 21
84 Figure 4 – Hierarchy of human failures . 23
85 Figure 5 – System life cycle . 27
86 Figure 6 – Human-centred design activities . 31
88 Table 1 – People who influence dependability . 14
89 Table A.1 – HRA methods and their application . 34
90 Table B.1 – Automation . 39
91 Table B.2 – Design for maintainability . 39
92 Table B.3 – Human-machine interface . 40
93 Table B.4 –Incorporation of displays, controls, and alarm functions . 40
94 Table B.5 – Incorporation of input devices . 41
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95 Table B.6 – Environment . 41
96 Table B.7 – Safety . 41
97 Table B.8 – Security . 41
98 Table C.1 – Examples of methods and techniques that contribute to best practices . 42
IEC CDV 62508 © IEC:2023 – 5 –
102 INTERNATIONAL ELECTROTECHNICAL COMMISSION
103 ____________
105 GUIDANCE ON HUMAN ASPECTS OF DEPENDABILITY
108 FOREWORD
109 1) The International Electrotechnical Commission (IEC) is a worldwide organization for
110 standardization comprising all national electrotechnical committees (IEC National
111 Committees). The object of IEC is to promote international co-operation on all questions
112 concerning standardization in the electrical and electronic fields. To this end and in addition
113 to other activities, IE
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