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Technical safety and reliability methods for resilience engineering

: Häring, Ivo; Gelhausen, Patrick

Volltext ()

Haugen, S.:
Safety and Reliability - Safe Societies in a Changing World : Proceedings of ESREL 2018, June 17-21, 2018, Trondheim, Norway
London: CRC Press, 2018
ISBN: 978-0-8153-8682-7
ISBN: 978-1-3511-7465-7
European Safety and Reliability Conference (ESREL) <28, 2018, Trondheim>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer EMI ()

Resilience of technical and socio-technical systems can be defined as their capability to behave in an acceptable way along the timeline pre, during and post potentially dangerous or disruptive events, i.e. in all phases of the resilience cycle and overall. Hence technical safety and reliability methods and processes for technical safety and reliability are strong candidate approaches to achieve the objective of engineering resilience for such systems. This is also expected when restricting the set of methods to classical safety and reliability assessment methods, e.g. classical Hazard Analysis (HA) methods, inductive Failure Mode and Effects Analysis (FMEA), deductive Fault Tree Analysis (FTA), Reliability Block Diagrams (RBDs), Event Tree Analysis (ETA) and reliability prediction. Such methods have the advantage that they are typically already used in industrial research and development. However, improving the resilience of systems is usually not their explicit aim. The paper covers how to allocate such methods to different resilience assessment, response, development and resilience management tasks when engineering resilience from a technical perspective. In particular, the resilience dimensions of risk management, resilience objectives, resilience cycle time phases, technical resilience capabilities and system layers are used explicitly to explore their range of applicability. Also typical system graphical modelling, hardware and software development methods are assessed to document the usability of technical reliability and safety methods for resilience analytics and technically engineering resilience.