Probability and frequency calculations related to protection layers revisited
| Autor: | Cyrille Folleau, Jean-Pierre Signoret, Philippe Thomas, Yves Dutuit, Pierre-Joseph Cacheux, Stéphane Collas, Fares Innal |
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| Rok vydání: | 2014 |
| Předmět: |
Fault tree analysis
Correctness Computer science General Chemical Engineering Association (object-oriented programming) Energy Engineering and Power Technology Management Science and Operations Research Markov model Industrial and Manufacturing Engineering Control and Systems Engineering Simple (abstract algebra) Control system Safety instrumented system Safety Risk Reliability and Quality Algorithm Independence (probability theory) Food Science |
| Zdroj: | Journal of Loss Prevention in the Process Industries. 31:56-69 |
| ISSN: | 0950-4230 |
| DOI: | 10.1016/j.jlp.2014.07.001 |
| Popis: | This article casts a new glance over some methods dedicated to the calculation of the likelihood (probability or frequency) of failure of systems and, in particular, safety-related systems working alone or in association with other protection layers. It consists first in examining with a critical eye the relevancy of the aforementioned methods, which are still often used in spite of their restrictive limitations, and second in proposing an alternative approach for each of them. The correctness of the examinated methods is tested by applying them to very simple systems modeled by fault tree models, with intent to show why these methods are debatable and how they can be replaced by other ones, more appropriate. The particular case of several protection layers having to react on the demand resulting from the global failure of their associated control system is considered. That case leads to revisit the common assumption of the independence between the above protection layers and control system, by taking into account the order of their respective failures from a qualitative and quantitative point of view. |
| Databáze: | OpenAIRE |
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