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BS EN 62347:2007

BS EN 62347:2007

$167.15

Guidance on system dependability specifications

Published By Publication Date Number of Pages
BSI 2007 38
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This International Standard gives guidance on the preparation of system dependability specifications. It provides a process for system evaluation and presents a procedure for determining system dependability requirements. This International Standard is not intended for certification or to perform conformity assessment for contractual purposes. It is not intended to change any rights or obligations provided by applicable statutory or regulatory requirements.

PDF Catalog

PDF Pages PDF Title
5 CONTENTS
6 INTRODUCTION
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Concepts dealing with system dependability
4.1 Understanding the system
9 Figure 1 – Example of system properties and related characteristics
10 4.2 System life cycle
11 Figure 2 – Overview of system life cycle stages
12 4.3 System operation
4.4 System operating profile
13 4.5 Dependability requirements
Figure 3 – Relationships of system operating profile and scenario in system operation
15 5 Procedure for specifying system dependability
5.1 System specification process
5.2 System dependability specification process
16 5.3 Determining dependability values
Figure 4 – Overview of system specification process
17 5.4 Procedural steps for determining system dependability requirements
18 Figure 5 – Steps for determining system dependability requirements
21 Annex A (informative) Evaluation of dependability characteristics
26 Table A.1 – Examples of influencing factors under each influencing condition
27 Table A.2 – Relationship of system properties with influencing conditions
28 Annex B (informative) Example on developing a system dependability specification – Home security system
32 Figure B.1 – System configuration for normal mode of operation
33 Figure B.2 – System configuration for panic mode of operation
Figure B.3 – System configuration for security service mode of operation
36 Bibliography

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BS EN 62347:2007
$167.15