Scientific paper ID 1397 : 2016/3
THE FAULT TREE AS A SYSTEM MODEL FOR SAFETY OF RISK SYSTEMS
Emil Ivanov, Plamen Atanasov
Mankind activity is accompanied with expansion of range of the so-called “Risk systems”. These are systems for management of technological processes, which on certain conditions, can cause dramatic material and moral damages. The assessment of risk for such violations becomes a vital part of development and investment activity. In the proposed excerpt a thorough analysis of the fault tree as a dependability model is performed. Classifications are made, advantages and disadvantages of every kind of tree and the application areas are indicated. The known (static) fault tree cannot model the dependability behavior of systems in which the consistency of origins of failures is crucial. The so-called Dynamic fault tree is presented, which models processes in time. It also gives an account of the sequence of origination of failures, which makes it appropriate for every system.
динамично дърво откази надеждност безопасност рискови системи осигурителни системи.dynamic tree failure dependability safety risk systems security systems.Emil Ivanov Plamen Atanasov
 Ruijters, E., M. Stoelinga, Fault tree analysis: A survey of the state-of-the-art in modeling, analysis and tools, Computer Science Review 15-16 (2015), pp. 29-62, 2015.
 Hao, G., H. Guan, D. Qiu, W. Du, Reliability Analysis of Relay Protection Based on the Fuzzy-Markov Model, International Journal of Hybrid Information Technology Vol.8, No.10 (2015), pp.115-128, 2015.
 Boudali, H., P. Crouzen, M. Stoelinga, A Rigorous, Compositional, and Extensible Framework for Dynamic Fault Tree Analysis, IEEE Transactions on Dependable and Secure Computing, Vol. 7, No. 2, April-June 2010.
 Zhu G., Y. Sun, G. Zhao, A Dynamic Fault Tree method for availability assessment of the repairable gas transmission system, Safety and Reliability of Complex Engineered Systems: ESREL 2015, pp. 1897-1903, 2015.