97_RAMS_OptSys_JDA&LMB.pdf (842.85 kB)
Optimal safety system performance
online resource
posted on 2008-10-31, 12:44 authored by J.D. Andrews, Rachel L. PattisonThis paper investigates the efficiency of a design
optimization scheme which is appropriate for systems which
require a high likelihood of functioning on demand. Traditional
approaches to the design of safety critical systems follows the
preliminary design, analysis, appraisal and redesign
stages until what is regarded as an acceptable design is
achieved. For safety systems whose failure could result in loss
of life it is imperative that the best use of the available
resources is made and a system which is optimal not just
adequate is produced.
The methodology presented in the paper retains the
commonly used fault tree method to analyse the individual
system designs. By the use of house events a single fault tree
is constructed to represent the failure causes of each potential
design to overcome the time consuming task of constructing a
fault tree for each design investigated during the optimization
procedure.
The final design specification is acheved using a
genetic algorithm to perform the optimization with the
constraints incorporated by penalising the fitness of infeasible
designs. To demonstrate the practicality of the method
developed it has been applied to a High Integrity Protection
System (HIPS).
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Citation
ANDREWS, J.D. and PATTISON, R.L., 1997. Optimal safety system performance. IN: Proceedings of the Annual Reliability and Maintainability Symposium, Philadelphia, 14th-16th January, pp. 76-83 [DOI: 10.1109/RAMS.1997.571668]Publisher
© Institute of Electrical and Electronics Engineers (IEEE)Publication date
1997Notes
This is a conference paper [© IEEE]. It is also available from: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.Language
- en