RAMS的安全例證分析與應用
發(fā)布時間：2018-08-22 09:48
【摘要】：隨著我國經(jīng)濟發(fā)展的需要,鐵路經(jīng)多次提速,規(guī)模越來越大,鐵路產(chǎn)品的現(xiàn)代化、大型化和復雜化程度得到極大的提高,故障發(fā)生后給人類社會造成的危害也越來越嚴重,因此,對軌道交通系統(tǒng)的安全性提出了更高要求。列車運行控制系統(tǒng)LKJ作為軌道交通系統(tǒng)中的控制列車兩冒一超的重要設備,已成為列車車載運行信息中心,在列車運行過程中起中流砥柱的作用,其可靠水平直接關系到列車的安全運行,對LKJ設計進行RAMS的分析十分必要。 本文依照EN50126、EN50128、EN50129安全標準,將RAMS管理引入到LKJ設計開發(fā)中,對列車運行監(jiān)控系統(tǒng)的可靠性、可用性、可維修性以及安全性進行系統(tǒng)的管理,進行RAMS的安全例證分析。首先,分別計算系統(tǒng)、子系統(tǒng)和設備的可容忍風險率,確定產(chǎn)品安全完整性等級水平；其次,分析LKJ系統(tǒng)的RBD框圖,確定系統(tǒng)的邏輯關系,并依據(jù)生命周期不同階段的技術和措施,對生命周期的每個階段進行安全管理,規(guī)范LKJ的設計流程；最后,在功能和技術層面規(guī)范產(chǎn)品設計活動,保證安全相關系統(tǒng)的安全性。 本文主要采用故障模式影響及危害分析(FMECA)自下而上地分析每一種單因素可能的故障后果,系統(tǒng)地分析LKJ系統(tǒng)的故障模式影響及危害性,并將其可能的故障模式按嚴重程度分類,以便采取改進措施；故障樹(FTA)自上而下的深入到故障的組合關系,分析系統(tǒng)可能產(chǎn)生的危害,追溯系統(tǒng)失效的根源。FMECA是FTA的一種準備,FTA是FMECA的發(fā)展和補充。結合實際使用過程中反饋的數(shù)據(jù),使用危害與可操作分析(HAZOP)將反饋回來的數(shù)據(jù)進行危害分析,減小危害。 最后,對全文的總結和不足之處的下一步工作展望。
[Abstract]:With the need of our country's economic development, the railway has been increasing speed many times, the scale is getting larger and larger, the modernization, the large-scale and the complication degree of the railway products have been greatly improved, and the harm to the human society caused by the failure has become more and more serious. Therefore, the safety of rail transit system put forward higher requirements. The train operation control system (LKJ), as an important equipment in the rail transit system, has become the information center of train on-board operation and plays an important role in the train operation. Its reliability level is directly related to the safe operation of the train. It is necessary to analyze the RAMS of LKJ design. According to EN50126 / EN50128 / EN50129 safety standard, this paper introduces RAMS management into the design and development of LKJ, manages the reliability, availability, maintainability and security of train operation monitoring system, and analyzes the safety example of RAMS. Firstly, the tolerable risk rate of system, subsystem and equipment is calculated, and the level of product safety integrity is determined. Secondly, the RBD block diagram of LKJ system is analyzed to determine the logical relationship of the system. According to the technology and measures of different stages of the life cycle, the security management of each stage of the life cycle is carried out, and the design process of LKJ is standardized. Finally, the product design activities are standardized at the functional and technical levels to ensure the safety of the safety-related systems. In this paper, (FMECA) is used to analyze the possible failure consequences of each single factor from the bottom up, and the influence and harmfulness of the failure modes of LKJ system are systematically analyzed, and the possible fault modes are classified according to the severity. In order to take the improvement measures, the fault tree (FTA) from top to bottom goes deep into the fault combination relationship, analyzes the possible harm of the system, and traces the root cause of the system failure .FMECA is a kind of preparation for FTA is the development and supplement of FMECA. Combined with the feedback data in practical use, the hazard analysis and operational analysis (HAZOP) will be used to analyze the hazards of the feedback data, so as to reduce the harm. Finally, the summary of the full text and the shortcomings of the next work prospects.
【學位授予單位】：鄭州大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U284.48;U298
本文編號：2196732
[Abstract]:With the need of our country's economic development, the railway has been increasing speed many times, the scale is getting larger and larger, the modernization, the large-scale and the complication degree of the railway products have been greatly improved, and the harm to the human society caused by the failure has become more and more serious. Therefore, the safety of rail transit system put forward higher requirements. The train operation control system (LKJ), as an important equipment in the rail transit system, has become the information center of train on-board operation and plays an important role in the train operation. Its reliability level is directly related to the safe operation of the train. It is necessary to analyze the RAMS of LKJ design. According to EN50126 / EN50128 / EN50129 safety standard, this paper introduces RAMS management into the design and development of LKJ, manages the reliability, availability, maintainability and security of train operation monitoring system, and analyzes the safety example of RAMS. Firstly, the tolerable risk rate of system, subsystem and equipment is calculated, and the level of product safety integrity is determined. Secondly, the RBD block diagram of LKJ system is analyzed to determine the logical relationship of the system. According to the technology and measures of different stages of the life cycle, the security management of each stage of the life cycle is carried out, and the design process of LKJ is standardized. Finally, the product design activities are standardized at the functional and technical levels to ensure the safety of the safety-related systems. In this paper, (FMECA) is used to analyze the possible failure consequences of each single factor from the bottom up, and the influence and harmfulness of the failure modes of LKJ system are systematically analyzed, and the possible fault modes are classified according to the severity. In order to take the improvement measures, the fault tree (FTA) from top to bottom goes deep into the fault combination relationship, analyzes the possible harm of the system, and traces the root cause of the system failure .FMECA is a kind of preparation for FTA is the development and supplement of FMECA. Combined with the feedback data in practical use, the hazard analysis and operational analysis (HAZOP) will be used to analyze the hazards of the feedback data, so as to reduce the harm. Finally, the summary of the full text and the shortcomings of the next work prospects.
【學位授予單位】：鄭州大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U284.48;U298
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