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BSI PD CEN/CLC/TR 17602-80-03:2021

BSI PD CEN/CLC/TR 17602-80-03:2021

$189.07

Space product assurance. Software dependability and safety

Published By Publication Date Number of Pages
BSI 2021 48
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This Handbook provides guidance on the application of the dependability and safety requirements relevant to software defined in ECSS-Q-ST-80C.

This Handbook provides support for the selection and application of software dependability and safety methods and techniques that can be used in the development of software-intensive space systems.

This Handbook covers all of the different kinds of software for which ECSS-Q-ST-80C is applicable. Although the overall software dependability and safety workflow description is mainly targeted to the development of spacecraft, the described approach can be adapted to projects of different nature (e.g. launchers, ground systems).

The methods and techniques described in the scope of this Handbook are mainly focused on assessment aspects, though specific development and implementation techniques for dependability and safety (e.g. software failure propagation prevention, defensive programming) are addressed.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
9 2 References
10 3 Terms, definitions and abbreviated terms
3.1 Terms from other documents
3.2 Abbreviated terms
11 4 Principles
4.1 General concepts
4.1.1 Software failures and faults
4.1.2 Software reliability
12 4.1.3 Software maintainability
4.1.4 Software availability
13 4.1.5 Software safety
4.1.6 System level and software level
4.1.7 Fault prevention, removal, tolerance, and forecasting
14 4.2 Relation to other ECSS Standards and Handbooks
15 5 Software dependability and safety programme
5.1 Introduction
5.2 Software dependability and safety workflow
5.2.1 General
16 5.2.2 Software dependability and safety requirements
5.2.2.1 General
5.2.2.2 System-level safety requirements for software
17 5.2.2.3 System-level dependability requirements for software
5.2.3 Software criticality classification
5.2.3.1 General
18 5.2.3.2 System-level software criticality classification
20 5.2.3.3 Software-level software criticality classification
23 5.2.4 Handling of critical software
5.2.5 Hardware-Software Interaction Analysis
25 6 Software dependability and safety methods and techniques
6.1 Introduction
6.2 SFMEA (Software Failure Modes and Effects Analysis)
6.2.1 Purpose
26 6.2.2 Procedure
6.2.2.1 General
6.2.2.2 Software level
6.2.2.3 Failure modes
27 6.2.2.4 Failure effects
28 6.2.2.5 Severity and criticality
29 6.2.2.6 Observable symptoms
6.2.2.7 Recommendations
6.2.3 Costs and benefits
30 6.3 SFTA (Software Fault Tree Analysis)
6.3.1 Purpose
6.3.2 Procedure
31 6.3.3 Costs and benefits
6.4 SCCA (Software Common Cause Analysis)
32 6.5 Engineering methods and techniques supporting software dependability and safety
6.6 Software availability and maintainability techniques
6.6.1 Software maintainability
34 6.6.2 Software availability
35 6.7 Software failure propagation prevention
38 6.8 Defensive programming
46 Blank Page

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BSI PD CEN/CLC/TR 17602-80-03:2021
$189.07