动力定位系统故障模式与后果分析中的关键点

Key Elements of Failure Mode and Effect Analysis for Dynamic Positioning System

移位风险是动力定位(Dynamic Positioning,简称DP)系统在海洋工程领域应用过程中的最主要风险,设计中通过采用较高级别的冗余度提高系统的可靠性,避免移位事故的发生。各大船级社都要求通过故障模式与后果分析(Failure Mode and Effect Analysis,简称FMEA)的方式对动力定位系统的冗余度进行验证,分析的深度和质量直接关系到动力定位系统的可靠性设计。本文介绍了DP FMEA分析方法,并通过实例讨论了成功开展DP FMEA分析的几个关键点,为未来开展类似的工作提出相关建议。

Position loss is the main risk of the application of Dynamic Positioning （DP） system in offshore industry. To avoid position loss accident, DP reliability is achieved through the redundancy design of the system. Major classification societies require a Failure Mode and Effect Analysis （FMEA） to be performed to verify the redundancy of the DP system. Level of details and quality of the FMEA work directly affects the reliability design of the system. This paper introduces the DP FMEA methodology and discusses the key elements of DP FMEA with examples. Recommendations are also proposed accordingly to include industry best prac- tice in the future DP FMEA work.