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BS EN 62741:2015

BS EN 62741:2015

$198.66

Demonstration of dependability requirements. The dependability case

Published By Publication Date Number of Pages
BSI 2015 52
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This International Standard gives guidance on the content and application of a dependability case and establishes general principles for the preparation of a dependability case.

This standard is written in a basic project context where a customer orders a system that meets dependability requirements from a supplier and then manages the system until its retirement. The methods provided in this standard may be modified and adapted to other situations as needed.

The dependability case is normally produced by the customer and supplier but can also be used and updated by other organizations. For example, certification bodies and regulators may examine the submitted case to support their decisions and users of the system may update/expand the case, particularly where they use the system for a different purpose.

PDF Catalog

PDF Pages PDF Title
6 English
CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
12 3.2 Abbreviations
4 Background to the dependability case
4.1 Principles and purpose
13 4.2 Relationship between the dependability case and dependability plans
14 4.3 Progressive assurance of dependability
15 5 Principles of the dependability case
5.1 Description of the dependability case
Figures
Figure 1 – Illustration of progressive assurance process
16 5.2 Making claims in the dependability case
Figure 2 – The development of claims
17 5.3 Using evidence in the dependability case
18 5.4 Evidence framework
19 Figure 3 – Establishment and development of the evidence framework
20 5.5 Dependability case report
6 Development of the dependability case
6.1 General
21 6.2 Preparation of the dependability case
22 6.3 Concept stage
23 6.4 Development stage
6.5 Realization stage
24 6.6 Utilization stage
6.7 Enhancement stage
6.8 Retirement stage
25 7 Assessing the adequacy of evidence
26 Annex A (informative) Evidence framework
A.1 General
27 A.2 Abbreviations used only in this annex
28 Tables
Table A.1 – Evidence framework for system “X”
32 Table A.2 – Evidence framework for system Y
44 Annex B (informative) General requirements for the dependability case report
B.1 General
B.2 Elements required for the dependability case report
B.3 Context and assumptions
B.3.1 Stakeholders
45 B.3.2 System description
B.3.3 Dependability requirements
B.3.4 Limitations on use
B.3.5 Assumptions
B.4 Risks
46 B.5 Dependability plan
B.6 The evidence framework
B.7 Body of evidence
B.8 Review of evidence to date
B.9 Dependability claims and argument
B.10 Conclusions and recommendations
48 Annex C (informative) Checklist of points for assessing the adequacy of evidence
49 Bibliography

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BS EN 62741:2015
$198.66