Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offioading system and fire accidents were analyzed based on the floating produc...Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offioading system and fire accidents were analyzed based on the floating production, storage and offioading （FPSO） features. Fault tree analysis （FTA）, and failure modes and effects analysis （FMEA） methods were examined based on information already researched on modules of relex reliability studio （RRS）. Equipment failures were also analyzed qualitatively by establishing a fault tree and Boolean structure function based on the shortage of failure cases, statistical data, and risk control measures examined. Failure modes of fire accident were classified according to the different areas of fire occurrences during the FMEA process, using risk priority number （RPN） methods to evaluate their severity rank. The qualitative analysis of FTA gave the basic insight of forming the failure modes of FPSO offioading, and the fire FMEA gave the priorities and suggested processes. The research has practical importance for the security analysis problems of FPSO.展开更多
为提高产品设计质量,文章提出了一种基于改进风险顺序数(risk priority number,RPN)的质量功能展开(quality function deployment,QFD)方法。该方法用层次分析法(analytic hierarchy process,AHP)确定RPN中各因子的权重;针对RPN中专家...为提高产品设计质量,文章提出了一种基于改进风险顺序数(risk priority number,RPN)的质量功能展开(quality function deployment,QFD)方法。该方法用层次分析法(analytic hierarchy process,AHP)确定RPN中各因子的权重;针对RPN中专家评判的模糊性和不确定性,基于粗糙集理论提出了改进的逼近理想排序法(technique for order preference by similarity to ideal solution,TOPSIS),获得了产品失效模式对应失效原因的RPN排序和基本相对重要度;并以该失效原因对应的工程参数为QFD的工程特性,利用矩阵展开确定零件特性;引入了实现工程特性改进目标所要求的总资源、总可行性、产品竞争优势等概念,进而确定了工程特性基本相对重要度的修正因子,确定了工程特性的最终相对重要度;最后,以汽车离合器产品设计为例,验证了该方法的有效性和可行性。该方法同样适应于其他类产品。展开更多
基金Supported by the Fundamental Research Funds for the Central Universities (HEUCFR1109)"111" projects foundation (Grant No.B07019) from State Administration of Foreign Experts Affairs of China and Ministry of Education of China
文摘Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offioading system and fire accidents were analyzed based on the floating production, storage and offioading （FPSO） features. Fault tree analysis （FTA）, and failure modes and effects analysis （FMEA） methods were examined based on information already researched on modules of relex reliability studio （RRS）. Equipment failures were also analyzed qualitatively by establishing a fault tree and Boolean structure function based on the shortage of failure cases, statistical data, and risk control measures examined. Failure modes of fire accident were classified according to the different areas of fire occurrences during the FMEA process, using risk priority number （RPN） methods to evaluate their severity rank. The qualitative analysis of FTA gave the basic insight of forming the failure modes of FPSO offioading, and the fire FMEA gave the priorities and suggested processes. The research has practical importance for the security analysis problems of FPSO.
文摘为提高产品设计质量,文章提出了一种基于改进风险顺序数(risk priority number,RPN)的质量功能展开(quality function deployment,QFD)方法。该方法用层次分析法(analytic hierarchy process,AHP)确定RPN中各因子的权重;针对RPN中专家评判的模糊性和不确定性,基于粗糙集理论提出了改进的逼近理想排序法(technique for order preference by similarity to ideal solution,TOPSIS),获得了产品失效模式对应失效原因的RPN排序和基本相对重要度;并以该失效原因对应的工程参数为QFD的工程特性,利用矩阵展开确定零件特性;引入了实现工程特性改进目标所要求的总资源、总可行性、产品竞争优势等概念,进而确定了工程特性基本相对重要度的修正因子,确定了工程特性的最终相对重要度;最后,以汽车离合器产品设计为例,验证了该方法的有效性和可行性。该方法同样适应于其他类产品。
