A Dynamic Fault Tree method for availability assessment of the repairable gas transmission system

2015 ◽  
pp. 1897-1903
Author(s):  
Guanghao Zhu ◽  
Yufeng Sun ◽  
Guangyan Zhao
Keyword(s):  
Fault Tree ◽  
Transmission System ◽  
Dynamic Fault Tree ◽  
Availability Assessment ◽  
Tree Method

Improving Dynamic Fault Tree Method for Complex System Reliability Analysis: Case Study of a Wind Turbine

2015 ◽  
Author(s):  
Jafar Asghari ◽  
Mohammad Pourgol Mohammad ◽  
Farzin Salehpour Oskouyi
Keyword(s):  
Wind Turbine ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Dft Method ◽  
Realistic Model ◽  
Dynamic Fault Tree ◽  
Wind Turbine System ◽  
Simulation Based ◽  
Tree Method

Fault Tree Analysis (FTA) is one of the most developed techniques in reliability studies; however static analysis is not able to encompass the dynamic behavior of complex systems. To overcome this problem, Dynamic Fault Tree (DFT) analysis is suggested in recent researches. The main motivation of this study is a comparative study on differences between Static Fault Tree (SFT) and DFT models of a typical mechanical system (case study of a wind turbine). Also, this paper is aimed to interpretation of the results and sufficiency analysis of SFT to model this system. This study, first presents a SFT analysis for a wind turbine system. Then, DFT is developed for the system. Monte Carlo simulation based method is applied for its analysis. The comparison showed that the DFT method presents more useful and realistic model of a wind turbine system. The proposed method improved the analysis through modification of dynamic gates.

The Reliability Analysis and Simulation Method of Train Control System Based on Markov

2014 ◽  
Vol 556-562 ◽  
pp. 2333-2336
Author(s):  
Shang Guan Wei ◽  
Jie Xiao ◽  
Bai Gen Cai ◽  
Jian Wang
Keyword(s):  
Control System ◽  
Quantitative Analysis ◽  
Reliability Analysis ◽  
Fault Tree ◽  
Simulation Method ◽  
Train Control ◽  
Dynamic Fault Tree ◽  
Train Control System ◽  
Markov Method ◽  
Tree Method

This paper mainly studies the reliability of trackside subsystem of the CTCS-3 train control system. Dynamic fault tree method is used for reliability analysis. The fault tree is decomposed into static and dynamic sub-trees. Based on Markov method, precise quantitative analysis is performed on the dynamic sub-tree. The failure probability of the trackside subsystem is calculated. Through analyzing the structural importance degree and pivotal importance degree of the bottom events, suggestions for improving the reliability of the system are concluded.

scholarly journals Analysis and risk assessment of risk technical systems to develop of methodology for teaching students using the method dynamic fault tree

2019 ◽  
Vol 6 ◽  
pp. 115-123
Author(s):  
Tsvetelina Simeonova
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Fault Tree ◽  
Quantitative Risk Assessment ◽  
Web Based ◽  
Qualitative And Quantitative ◽  
Dynamic Fault Tree ◽  
Student Training ◽  
Risk Analysis And Management ◽  
Tree Method

The aim of the present work is to develop a methodology for conducting exercises for analysis, assessment and management of risk, using a web based tool, by identifying and analyzing the risk of occurrence of a dangerous event through the dynamic fault tree method. As a result, a framework is presented according to the proposed methodology applicable to the students' training in risk analysis, evaluation and management, and according to accepted assumptions. Approaches for qualitative and quantitative risk assessment are presented at the assumed value of the damages. In addition, a methodology for risk analysis, assessment and management applicable to student training on risk analysis and management, through the dynamic fault tree method, has been developed and proposed.  

scholarly journals City Fire Risk Analysis based on Coupling Fault Tree Method and Triangle Fuzzy Theory

2014 ◽  
Vol 84 ◽  
pp. 204-212 ◽  
Author(s):  
Wu Aiyou ◽  
Shi Shiliang ◽  
Li Runqiu ◽  
Tang Deming ◽  
Tang Xiafang
Keyword(s):  
Risk Analysis ◽  
Fuzzy Theory ◽  
Fault Tree ◽  
Fire Risk ◽  
Fire Risk Analysis ◽  
Coupling Fault ◽  
Tree Method
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