Advances in component fault trees

Kaiser, Bernhard; Schneider, Daniel; Adler, Rasmus; Domis, Dominik; Möhrle, Felix; Berres, Axel; Zeller, Marc; Höfig, Kai; Rothfelder, Martin

doi:10.1201/9781351174664-103

Cited by 20 publications

(7 citation statements)

References 1 publication

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“…An example from the manufacturing domain to dynamically perform risk assessment based on a 3D simulation of the system is presented in [15]. Automated Safety Analysis: With Component Fault Trees (CFTs), there is a model-and component-based methodology for fault tree analysis [10,6,9]. In CFTs, every system component is represented by a CFT element.…”

Section: Methods To Enable Continuous Delivery For Safety-critical Sy...mentioning

confidence: 99%

Towards Continuous Safety Assessment in Context of DevOps

Zeller¹

2021

Preprint

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Traditionally, promoted by the internet companies, continuous delivery is more and more appealing to industries which develop systems with safety-critical functions. Since safety-critical systems must meet regulatory requirements and require specific safety assessment processes in addition to the normal development steps, enabling continuous delivery of software in safety-critical systems requires the automation of the safety assessment process in the delivery pipeline. In this paper, we outline a continuous delivery pipeline for realizing continuous safety assessment in software-intensive safety-critical systems based on modelbased safety assessment methods.

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Section: Methods To Enable Continuous Delivery For Safety-critical Sy...mentioning

confidence: 99%

Towards Continuous Safety Assessment in Context of DevOps

Zeller¹

2021

Preprint

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“…2) Safety and Security in the design (SafSecDesign): A combined safety and security component local analysis is performed using component fault trees [17] to model and reason on the interferences caused because of safety and security undesired events. An example on the usage of component local analysis combining safety and security can be found in [18].…”

Section: A Space Casementioning

confidence: 99%

Will safety-security co-engineering pay off? A quality and cost perspective in two case studies

Urretavizcaya

Martínez

Satriani

et al. 2021

2021 IEEE/ACM Joint 9th International Workshop on Software Engineering for Systems-of-Systems and 15th Workshop on Distributed

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Safety and Security concerns are usually interlinked while building critical software-intensive systems of systems. Several efforts try to approach both domains of expertise to increase the overall reliability of the systems and reduce costs by an earlier detection of issues and trade-offs. Despite the growing number of co-engineering practices at different life-cycle stages, there is a lack on business justifications such as economic costs of their adoption. We report on using a cost model to evaluate the convenience (or not) of adopting co-engineering practices in two industrial case studies (space and medical devices). Simulation results with the collected data suggest an improvement in quality if any of the selected co-engineering practices are integrated while cost increases in one case but reduces in the other. We discuss the results but, as they cannot be generalized, the main contribution is on proposing the cost model for answering the title's question.

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“…Thus, the analysis is conducted locally on components to identify and describe their failure behaviour. Technically, a component local analysis can be represented with specific equation syntax [9], table [23] or diagram [15]. The diagram solution is used in Safety Architect tool 5 with a notation based on Component Fault Trees [15] as depicted in Figure 2.…”

Section: Component Local Analysismentioning

confidence: 99%

“…Technically, a component local analysis can be represented with specific equation syntax [9], table [23] or diagram [15]. The diagram solution is used in Safety Architect tool 5 with a notation based on Component Fault Trees [15] as depicted in Figure 2. In the earth observation case study, the Transmitter component design, with its input and output ports (Figure 1), is enriched with information about failure modes, feared events, and how system or local events can lead to the latter through logic expressed with Boolean gates.…”

Section: Component Local Analysismentioning

confidence: 99%

Safety and Security Interference Analysis in the Design Stage

Martínez

Godot

Ruíz

et al. 2020

Computer Safety, Reliability, and Security. SAFECOMP 2020 Workshops

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Safety and security engineering have been traditionally separated disciplines (e.g., different required knowledge and skills, terminology, standards and life-cycles) and operated in quasi-silos of knowledge and practices. However, the co-engineering of these two critical qualities of a system is being largely investigated as it promises the removal of redundant work and the detection of trade-offs in early stages of the product development life-cycle. In this work, we enrich an existing safetysecurity co-analysis method in the design stage providing capabilities for interference analysis. Reports on interference analyses are crucial to trigger co-engineering meetings leading to the trade-offs analyses and system refinements. We detail our automatic approach for this interference analysis, performed through fault trees generated from safety and security local analyses. We evaluate and discuss our approach from the perspective of two industrial case studies on the space and medical domains.

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Advances in component fault trees

Cited by 20 publications

References 1 publication

Towards Continuous Safety Assessment in Context of DevOps

Towards Continuous Safety Assessment in Context of DevOps

Will safety-security co-engineering pay off? A quality and cost perspective in two case studies

Safety and Security Interference Analysis in the Design Stage

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