scholarly journals A Comprehensive Investigation on the Fire Hazards and Environmental Risks in a Commercial Complex Based on Fault Tree Analysis and the Analytic Hierarchy Process

2020 ◽  
Vol 17 (19) ◽  
pp. 7347
Author(s):  
Yongyu Wang ◽  
Xiaoyang Ni ◽  
Jie Wang ◽  
Ziyi Hu ◽  
Kaihua Lu
Keyword(s):  
Analytic Hierarchy Process ◽  
Fire Safety ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Analytic Hierarchy ◽  
Tree Analysis ◽  
Causative Factors ◽  
Target Layer ◽  
The Analytic Hierarchy Process ◽  
Hierarchy Process

This paper focuses on the fire risk assessment for commercial complex, as the variety of fire accidental triggers inside could be a big threat to the public fire safety, leading to catastrophic loss in human lives and properties. Both the qualitative and quantitative analysis were imposed on a typical large commercial complex to recognize the potential fire-causative factors in this paper. Applying the fault tree analysis, the basic events leading to fire are acquired, and they are then further reclassified based on the analytic hierarchy process. Taking the damage of the accident as the target layer and the fire-causative factors, the equipment operation factors and firefighting factors as the criterion layer, the assessment index is well established. The risk of each factor is quantitatively evaluated, and the effect of each factor on the target layer is analyzed. The result of the fault tree analysis and analytic hierarchy process shows good consistency, in which human behavior is the main factor leading to the fire occurrence, followed by the combustible material, the rescue speed and the staff assignment factors. The results are beneficial for general decisions and measures in public fire safety management.

Study of the Structure Importance in Pipe Bridge Failure Fuzzy Assessment

2011 ◽  
Vol 233-235 ◽  
pp. 2922-2925
Author(s):  
Xin Qi Yu ◽  
Qing Gang Liu
Keyword(s):  
Analytic Hierarchy Process ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Analytic Hierarchy ◽  
Tree Analysis ◽  
High Consistency ◽  
Fuzzy Assessment ◽  
Bridge Failure ◽  
Hierarchy Process

The safety status of pipe bridge is often studied by fuzzy assessment. In fuzzy assessment, the structure importance must be calculated first. In this article, structure importance is calculated by Fault tree analysis(FTA) and Analytic hierarchy process(AHP). The result shows that the structure importance calculated by both methods is less than 30% different from each other. That means two methods are of high consistency and both is suitable for pipe bridge.

Comprehensive Assessment of Power Transformer Condition Based on the Fault Tree and the Analytic Hierarchy Process

2013 ◽  
Vol 805-806 ◽  
pp. 793-800 ◽  
Author(s):  
Feng Yao ◽  
Zhong Hui Zhang ◽  
Le Zhang He
Keyword(s):  
Analytic Hierarchy Process ◽  
Power Transformer ◽  
Fault Tree ◽  
The State ◽  
Comprehensive Assessment ◽  
Assessment Model ◽  
Analytic Hierarchy ◽  
The Analytic Hierarchy Process ◽  
The Impact ◽  
Hierarchy Process

Transformers state comprehensive assessment to provide the basis for the repair and maintenance of power transformers .Based on the fault tree analysis (FTA) to find out the impact of the failure of the power transformer factors, and the establishment of the index system to assess the state of the power transformer, application 3 scale analytic hierarchy process assessment model for the establishment of the state of the transformer , and thus the transformer state is divided into five levels. Through the classification of the more conducive to the staff to understand the transformer condition, reasonable arrangements for the maintenance plan .Case analysis to prove, based on the comprehensive assessment of the fault tree and power transformer condition of the Analytic Hierarchy Process method is reasonable and effective.

scholarly journals Analysis of comprehensive sensitivity evaluation of aircraft system based on FTA-AHP

2021 ◽  
Vol 39 (5) ◽  
pp. 971-977
Author(s):  
Yunwen FENG ◽  
Zhicen SONG ◽  
Cheng LU ◽  
Xiaofei LIU
Keyword(s):  
Sensitivity Analysis ◽  
Analytic Hierarchy Process ◽  
Reliability Analysis ◽  
Fault Tree ◽  
Evaluation Index ◽  
Analysis Model ◽  
Analytic Hierarchy ◽  
Sensitivity Evaluation ◽  
The Analytic Hierarchy Process ◽  
Hierarchy Process

Aiming at the lack of unified evaluation index for the sensitivity analysis of fault tree of the system, the Analytic Hierarchy Process(AHP) is introduced into Fault Tree Analysis(FTA), and an FTA-AHP method is proposed to generate the comprehensive sensitivity evaluation index of the system. Firstly, the reliability analysis model of the system fault tree is established, and three indexes including probabilistic sensitivity, relative sensitivity and structural sensitivity, are calculated by using the traditional sensitivity analysis method. Then, combined with the analytic hierarchy process, the weight coefficients were determined according to the sensitivity analysis results above and the type of the minimum cut set, and the comprehensive sensitivity evaluation and analysis of the system fault tree were carried out. Finally, the case verification shows that compared with the traditional method, the comprehensive sensitivity ranking results have less repeatability, and the factors are considered comprehensively, which is convenient for decision makers to make judgment. The synthetic sensitivity evaluation model developed provides support for system reliability analysis.

Application of FTA and Improved FAHP in Power Transformer Risk Assessment

2013 ◽  
Vol 860-863 ◽  
pp. 2157-2160
Author(s):  
Yi Yun Sun ◽  
Xin Wang ◽  
Yi Hui Zheng ◽  
Li Xue Li ◽  
Qing Shan Xu
Keyword(s):  
Complex System ◽  
Power Transformer ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Mathematical Programming Problem ◽  
Analytic Hierarchy ◽  
Tree Analysis ◽  
Judgment Matrix ◽  
Transformer Fault ◽  
Hierarchy Process

For fast and accurately assessing the risk of the transformer failure and getting the reliability of transformer components, it is proposed a new method based on Fault Tree Analysis (FTA) and Improved Fuzzy Analytic Hierarchy Process (IFAHP) in this paper. Firstly power transformer fault tree is established accordingly to make the complex transformer faults system subdivide into various kinds of basic types directly; Secondly, the IFAHP is designed to analyze the fault tree, so the complex system of transformer can be quantitatively described and the fuzzy judgment matrix can be established; Finally, the fuzzy consistent qualification is changed into a mathematical programming problem and Genetic Algorithms (GA) is adopted to get the solution so as to obtain the reliability of transformer components. In addition, the application result shows the effectiveness of the method above.

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