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Chinese Journal of Aeronautics 1995年第4期8卷 305-312页

作者： Wuyanfang Wei Zhongxin.(Department of Mechanical Engineering, Nanjing University ofAeronautics and Astronautics, Nanjing, China, 210016)

Because of the stochastic property of fault occurrence and fuzziness offault phenomenon, machine fault diagnosis technique in use, such as fault tree analysis,cause consequence tree method, etc., cannot exactly describe the properties of fault phe-nomenon and coherence of fault space. In this paper, based on the theory of generalPetri net, fault tree technique and theory of fuzzy set, a theory system of fuzzy Petri net(FPN) suitable for fault diagnosis is established, which is applied to an example of faultdiagnosis for FMS. This method has the properties of of rbjectivity, strong expressionability, easy inference, etc., which can solve the problems of stochastic property andfuzziness of fault.

关键词： fault trees diagnosis fuzzy sets Petrinet

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fault-tree Models of Accident Scenarios of RoPax Vessels

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International Journal of Automation and computing 2006年第2期3卷 107-116页

作者： Pedro Antao C. Guedes Soares Unit of Marine Technology and Engineering Unit of Marine Technology and Engineering Technical University of LisbonInstituto Superior TecnicoLisbon 1049-001PortugalTechnical University of LisbonInstituto Superior TecnicoLisbon 1049-001Portugal

Ro-Ro vessels for cargo and passengers （RoPax） are a relatively new concept that has proven to be popular in the Mediterranean region and is becoming more widespread in Northern Europe. Due to its design characteristics and amount of passengers, although less than a regular passenger liner, accidents with RoPax vessels have far reaching consequences both for economical and for human life. The objective of this paper is to identify hazards related to casualties of RoPax vessels. The terminal casualty events chosen are related to accident and incident statistics for this type of vessel. This paper focuses on the identification of the basic events that can lead to an accident and the performance requirements. The hazard identification is carried out as the first step of a Formal Safety Assessment （FSA） and the modelling of the relation between the relevant events is made using fault Tree Analysis （FTA）. The conclusions of this study are recommendations to the later steps of FSA rather than for decision making （Step 5 of FSA）. These recommendations will be focused on the possible design shortcomings identified during the analysis by fault trees throughout cut sets. Also the role that human factors have is analysed through a sensitivity analysis where it is shown that their influence is higher for groundings and collisions where an increase of the initial probability leads to the change of almost 90% of the accident occurrence.

关键词： Ship accidents fault trees human factors.

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fault Tree Research on Road Transportation of Hazardous Chemicals, Based on Analytic Hierarchy Process

Fault Tree Research on Road Transportation of Hazardous Chem...

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第三届教学管理与课程建设学术会议

作者： Li Sun, Shu-ming Ye, Quan Xia, Li-li Zhao Safety Engineering Research Institute,ZheJiang University Of Technology,Hangzhou , China

In order to obtain the relative probability of elementary events, this paper uses a fault Tree Analysis (FTA) of hazardous chemical road transportation accidents with the method of Analytic Hierarchy Process (AHP), and investigates the precipitating factors of such as human, equipment and circumstance et al. The results show that the top three reasons are all related to human factors, which proves that human factors play a dominant role in the majority of the hazardous chemical road transportation accidents. In the top ten factors, factors related to the trucks in transportation are the most important causes of these accidents, while the chemical itself is the least. The lack of protection in emergency can account for the largest proportion of the accidents, while the smallest proportion can be attributed to the chemical itself’ characteristic. The analysis of the trucks indicates that, except for weather conditions, both human errors and poor car conditions can be avoided.

关键词： Hazardous Chemicals Road Transportation fault trees Analytic Hierarchy Process

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