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A Method to Generate Reusable Safety Case Fragments from Compositional Safety Analysis

Fulltext:


Authors:

Irfan Sljivo, Barbara Gallina, Jan Carlson, Hans Hansson, Stefano Puri

Research group:

Safety-Critical Engineering

Publication Type:

Conference/Workshop Paper

Venue:

The 14th International Conference on Software Reuse

Publisher:

Springer International Publishing

DOI:

DOI 10.1007/978-3-319-14130-5

Abstract

Safety-critical systems usually need to be accompanied by an explained and well-founded body of evidence to show that the system is acceptably safe. While reuse within such systems covers mainly code, reusing accompanying safety artefacts is limited due to a wide range of context dependencies that need to be satisfied for safety evidence to be valid in a different context. Currently the most commonly used approaches that facilitate reuse lack support for reuse of safety artefacts. To facilitate reuse of safety artefacts we provide a method to generate reusable safety case argument-fragments that include supporting evidence related to safety analysis. The generation is performed from safety contracts that capture safety-relevant behaviour of components within assumption/guarantee pairs backed up by the supporting evidence. We illustrate our approach by applying it to an airplane wheel braking system example.

Bibtex

@inproceedings{Sljivo3705,
author = {Irfan Sljivo and Barbara Gallina and Jan Carlson and Hans Hansson and Stefano Puri},
title = {A Method to Generate Reusable Safety Case Fragments from Compositional Safety Analysis},
isbn = {978-3-319-14129-9},
volume = {LNCS 8919},
pages = {253--268},
month = {January},
year = {2015},
booktitle = {The 14th International Conference on Software Reuse},
publisher = {Springer International Publishing},
url = {http://www.es.mdu.se/publications/3705-}
}