STPA enabled safety assessment in the architecting of complex systems

Simple item page
dc.contributor.authorJimeno Altelarrea, Sergio
dc.contributor.authorRiaz, Atif
dc.contributor.authorGuenov, Marin D.
dc.date.accessioned2023-01-05T12:50:19Z
dc.date.available2023-01-05T12:50:19Z
dc.date.issued2022-12-09
dc.description.abstractSTPA is a hazard assessment technique that represents systems as hierarchical control structures composed of feedback control loops. Existing computational support focuses on creating the diagrams that depict these hierarchies. However, the elements in the loops and the signals exchanged must be determined manually. This impedes safety assessment, thus reducing the number of designs that can potentially be explored. Furthermore, the manual approach does not guarantee the correct update of the architecture with changes resulting from safety assessment, which can make the architecture inconsistent with the safety assessment. To overcome these limitations, proposed for the first time are two methods that automate the creation of: (1) hierarchical control structures and (2) detailed control loops. The methods create STPA models by analysing the architecture, which is modelled as a graph. The concept is illustrated with a representative example of a wheel brake system. The resulting models are compared with those obtained manually by the authors of STPA. The automation is shown to significantly reduce the required time and effort. It was also found to ensure consistency among the safety analysis and the architecture definition as it requires safety features to be included in the architecture before being considered in STPA analysis.en_UK
dc.identifier.citationJimeno Altelarrea S, Riaz A, Guenov MD. (2022) STPA enabled safety assessment in the architecting of complex systems, Safety and Reliability, Volume 41, Issue 4, 2022, pp. 197-224en_UK
dc.identifier.eissn2469-4126
dc.identifier.issn0961-7353
dc.identifier.urihttps://doi.org/10.1080/09617353.2022.2145647
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/18856
dc.language.isoenen_UK
dc.publisherTaylor & Francisen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectDesign for safetyen_UK
dc.subjectSystems-Theoretic Process Analysis (STPA)en_UK
dc.subjectHazard assessmenten_UK
dc.subjectmodel-based systems engineeringen_UK
dc.titleSTPA enabled safety assessment in the architecting of complex systemsen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
STPA_enabled_safety_assessment-2022.pdf
Size:
2.93 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)