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European Conference on Software Process Improvement

EuroSPI 2018: Systems, Software and Services Process Improvement pp 387–397Cite as

Functional Safety Case with FTA and FMEDA Consistency Approach

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Part of the book series: Communications in Computer and Information Science ((CCIS,volume 896))

Abstract

Based on the hazard and risk analysis of ISO 26262 possible malfunctions are analysed for different situations and rated by Severity, Exposure, and Controllability which leads to a QM, or ASIL A-D ranking. For each ASIL A-D case a safety goals is formatted. And for each safety goal with a rating of ASIL C or ASIL D an FTA (Fault Tree Analysis) and FMEDA (Failure Modes Effects and Diagnostics Analysis) are methods which are highly recommended. Both methods calculate an overall FIT (Failure in Time) and both consider a diagnostic coverage. In this paper an approach is described of how to assure in FTA (top down analysis) and FMEDA the same overall FIT calculated (bottom up analysis). The paper creates a use case scenario for the example “Function 2” in ISO 26262:2011 part 5 Annex E. The example used in the ISO 26262:2011 part 5 Annex E. [1] does not contain background information on system level. This paper adds the missing background information and shows how the system safety concept decisions are mapped onto hardware architecture decisions.

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Acknowledgements

We are grateful to the members of the SOQRATES [4] working group who have contributed: Alastair Walker (LORIT), Alexander Much (Elektrobit), Frank König, Martin Dallinger, Thomas Wegner (ZF Friedrichshafen AG), Armin Riess (BBraun), Dietmar Kinalzyk (HELLA), Ralf Mayer (BOSCH Engineering), Gerhard Griessnig (AVL), Andreas Gruber (ZKW), Rainer Dreves, Ivan Sokic, Stephan Habel (Continental), Christian Schlager, Thomas Stiglhuber (Magna Powertrain ECS), Andreas Riel (ISCN/Grenoble INP), Helmut Zauchner, Christoph Karner (KTM), Andreas Gruber (ZKW), Georg Macher (AVL), Bernhard Sechser (Methodpark), Lutz Haunert (G&D), Damjan Ekert (ISCN), Richard Messnarz (ISCN).

We are also grateful to the European Commission which has funded some of the initiatives that funded the development of skills in the Automotive sector. ISCN is a member of AQUA (Knowledge Alliance for Quality in Automotive Engineering, 2013–2015) [17, 18], and AQU (Automotive Quality Universities, 2015–2017), and the BLUEPRINT project DRIVES (2018–2021).

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Authors and Affiliations

  1. ISCN GesmbH, Graz, Austria

    Richard Messnarz & Harald Sporer

Authors
  1. Richard Messnarz
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  2. Harald Sporer
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Corresponding author

Correspondence to Richard Messnarz .

Editor information

Editors and Affiliations

  1. Tecnalia Bizkaia, San Sebastián, Spain

    Xabier Larrucea

  2. Tecnalia Bizkaia, San Sebastián, Spain

    Izaskun Santamaria

  3. School of Computing, Dublin City University, Dublin, Ireland

    Rory V. O'Connor

  4. I.S.C.N. GesmbH, Graz, Austria

    Richard Messnarz

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Messnarz, R., Sporer, H. (2018). Functional Safety Case with FTA and FMEDA Consistency Approach. In: Larrucea, X., Santamaria, I., O'Connor, R., Messnarz, R. (eds) Systems, Software and Services Process Improvement. EuroSPI 2018. Communications in Computer and Information Science, vol 896. Springer, Cham. https://doi.org/10.1007/978-3-319-97925-0_32

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  • DOI: https://doi.org/10.1007/978-3-319-97925-0_32

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-97924-3

  • Online ISBN: 978-3-319-97925-0

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