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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/3655

Title: Grid–sampling optimisation of safety systems
Authors: Andrews, J.D.
Bartlett, L.M.
Keywords: Optimisation
Safety Systems
Fault Tree Analysis
Binary Decision Diagrams
Issue Date: 2002
Publisher: © System Safety Society
Citation: ANDREWS,J.D. and BARTLETT, L.M., 2002. Grid–sampling optimisation of safety systems. 20th International System Safety Conference, August 5-9 2002, Denver, Radisson Southeast
Abstract: Safety systems are usually the last line of defence against the occurrence of a potentially hazardous event.Failure of a safety system on a potentially hazardous industrial system or process may have severe consequences. For a system whose failure could result in fatality it could be accepted that a merely adequate level of system unavailability is not sufficient. The aim should be to produce the optimal performance attainable within the constraints imposed on resources. This paper investigates a design optimisation scheme that is appropriate for safety systems. The methodology presented in this paper adopts the latest improvements to the fault tree analysis technique, the binary decision diagram approach, to analyse the individual system designs. The grid-sampling optimisation technique is used to generate the final design specification with the constraints incorporated. To demonstrate the practicality of the method it has been applied to a High Integrity Protection System. In all there are 42,831,360 combinations of twelve design variables. There are three constraints imposed on the system in terms of cost, mean down time, and spurious trip frequency.
Description: This is a conference paper. It was presented at the 20th International System Safety Conference, August 5-9 2002, Denver, Radisson Southeast.
URI: https://dspace.lboro.ac.uk/2134/3655
Appears in Collections:Conference Papers and Contributions (Aeronautical and Automotive Engineering)

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