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Mitigating software failures impacts into IT and OT system design through RAMS

Lishev, Dimitar (2024) Mitigating software failures impacts into IT and OT system design through RAMS.

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Abstract:This master thesis, conducted with Nederlandse Spoorwegen (Dutch Railways), addresses the challenges and opportunities presented by the integration of Information Technology (IT) and Operational Technology (OT) in the railway industry. As IT becomes increasingly critical in rolling stock operations, software reliability is paramount. The research focuses on mitigating software failures in IT and OT system design using Reliability, Availability, Maintainability, and Safety (RAMS) methodologies. The study combines qualitative and quantitative methods to examine IT and OT's roles in railway maintenance. It reviews current RAMS practices for software systems, incorporating insights from literature and Dutch Railways engineers. The core of the research involves adapting Reliability-Centered Maintenance (RCM) methodologies, typically used for hardware, to address software failures. Tools such as Software Functional Analysis, Software Failure Mode and Effect Analysis (SFMEA), and an RCM logic tree are integrated into a model for mitigating software failures. An Excel-based tool, developed and validated by industry professionals, facilitates the implementation of this Software Reliability-Centered Maintenance (SRCM) process. The findings suggest that incorporating software failure considerations into RAMS processes can enhance system reliability and maintenance efficiency in the railway sector
Item Type:Essay (Master)
Clients:
Nederlandse Spoorwegen, Haarlem, Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Link to this item:https://purl.utwente.nl/essays/103480
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