功能安全的人因影响及量化分析研究

发布时间：2018-02-10 07:58

本文关键词： 功能安全人因影响直觉模糊集架构分析相关失效　出处：《华北电力大学》2014年博士论文　论文类型：学位论文

【摘要】：安全相关系统的功能安全是过程工业安全领域的一个重要概念。现行国际功能安全标准认为人也是功能安全的一个有机组成部分,但对人因安全管理只提供了最低限度的指导。同时,现有人因安全研究对象主要集中在使用者身上,研究的内容则集中在如何分析和预防使用者操作失误方面,对于系统分析、实现人员失误及影响的研究则很少涉及。本论文在遵循IEC61508功能安全标准的基础上,结合过程工业领域的具体应用特点,详细分析、研究了安全相关系统所涉及的各类人员对于功能安全的影响,并研究了通过定量方法消除分析、实现人员意向失误的若干问题。本论文的主要研究成果如下： 1.为了明确现行国际功能安全标准中的人因安全管理疏漏,详细地分析、整理了IEC61508中人因安全管理的有关内容,将其中的缺失和疏漏进行了完善。提出了一套基于安全生命周期的人因安全管理方案。 2.为了衡量功能安全管理过程中的人因安全性问题,提出了人因安全完整性的概念,并对其进行了详细说明；详细阐述了人因安全完整性的评估方法及流程,提出了人因安全完整性确认方法。 3.针对危险分析过程中分析人员意见一致性问题,提出了一种新的直觉模糊距离测度,并讨论了其有效性和适用性的问题；详细阐述了基于直觉模糊距离的群体危险分析人员意见一致性分析方法,并通过实例说明一致性分析过程。 4.针对风险评估过程中评估人员意见表达准确性问题,提出了基于直觉模糊理论的风险描述方法；分析了普通风险矩阵在使用过程中的优缺点,在此基础上提出了一种基于直觉模糊理论的风险矩阵安全评估方法,并举实例加以说明其评估过程。 5.针对安全相关系统实现过程中相关失效率计算的问题,提出了一种基于超图的系统部件相关失效率计算方法,并通过实例计算验证了模型的有效性。
[Abstract]:The functional safety of safety-related systems is an important concept in the field of process industry safety. But it only provides minimal guidance to human safety management. At the same time, the existing research object of human safety mainly focuses on the users, and the content of the research focuses on how to analyze and prevent the users' operational errors. On the basis of following the IEC61508 function safety standard and combining the specific application characteristics in the field of process industry, this paper analyzes in detail, This paper studies the influence of all kinds of personnel involved in security-related systems on functional safety, and studies some problems of realizing personnel intention errors through quantitative analysis. The main research results of this thesis are as follows:. 1. In order to clarify the omissions of human safety management in the current international functional safety standards, the contents of human safety management in IEC61508 are analyzed and sorted out in detail. The defects and omissions are improved and a human factor safety management scheme based on security life cycle is proposed. 2. In order to measure the problem of human factor security in the process of functional safety management, the concept of human factor safety integrity is put forward and explained in detail, and the evaluation method and process of human factor safety integrity are described in detail. A method for confirming the integrity of human safety is proposed. 3. A new intuitionistic fuzzy distance measure is proposed to solve the problem of consistency of opinion in the process of risk analysis, and its validity and applicability are discussed. The method of consensus analysis of group risk analysts based on intuitionistic fuzzy distance is described in detail, and the process of consistency analysis is illustrated by an example. 4. Aiming at the accuracy of opinion expression in risk assessment, a risk description method based on intuitionistic fuzzy theory is proposed, and the advantages and disadvantages of common risk matrix are analyzed. On this basis, a risk matrix security assessment method based on intuitionistic fuzzy theory is proposed, and an example is given to illustrate the evaluation process. 5. In order to solve the problem of calculating the correlation failure rate in the implementation of the security related system, a method of calculating the correlation failure rate of the system components based on hypergraph is proposed, and the validity of the model is verified by an example.
【学位授予单位】：华北电力大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：X913

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