Français
8. Conclusion
The very simplicity of BDF makes it a widely used method by engineers in general, and reliability engineers in particular. However, like all other Boolean approaches (fault trees, event trees), BDFs are fraught with mathematical difficulties that are often overlooked by users, and even by certain calculation software programs whose mathematical principles and limitations should always be checked before use. The use of binary decision diagrams solves problems of combinatorial explosion when searching for minimum cuts, and enables analytical calculations of availability or failure frequency without approximation, even when the probabilities involved are high. The combination of BDFs and Markov processes (Markov processes driven by BDFs) is very useful for this purpose. However, except when the components concerned are all non-repairable, exact reliability calculations are not possible. The...
The Ultimate Scientific and Technical Reference
This article is included in
Safety and risk management
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Conclusion
Glossary
Bibliography
Software tools
GRIF-Workshop software package (GRaphique Interactif pour la Fiabilité), developed by ELF and then for TOTAL by SATODEV
– BFIAB module: reliability diagrams
– Module Tree: fault trees
– ETree module: event trees
– SIL module: BDF adapted to functional safety
– Petri module: stochastic Petri nets...
Websites
GRIF-Workshop: Demo versions downloadable at http://grif-workshop.fr
Standards and norms
- Diagrammes de fiabilité - CEI (IEC) CEI 61078 - 2016
- International electrotechnical vocabulary – Part 192: Dependability - CEI (IEC) IEC 60050-192 (IEV 192) - 2015
- Expressions mathématiques pour les termes de fiabilité, de disponibilité, de maintenabilité et de logistique de maintenance - CEI (IEC) CEI 61703 - 2016
- Petroleum, petrochemical and natural gas industries – Reliability modelling and...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
GRIF-Workshop software package. SATODEV (SAfety TOols DEVelopment) http://www.satodev.com
Organizations – Federations – Associations (non-exhaustive list)
The Ultimate Scientific and Technical Reference
