水下控制模块的故障树分析研究

Fault-tree Analysis of Subsea Control Module

水下控制模块是水下生产系统的重要组成部分,若出现故障对于财产、人员安全以及海洋环境都有重要影响。对水下控制模块进行可靠性分析,可有效预测或控制故障的发生,减少与设备故障相关的风险。以某渤海油气田生产项目水下控制模块为研究对象,运用Simulation X建模仿真工具,以电磁换向阀输出端口功能异常作为顶事件,对高压液压回路进行故障树分析。通过定性分析,找出关键部件和主要故障模式,提出应重点关注并提高蓄能器和电磁换向阀的可靠性水平。通过定量分析,得到顶事件的发生概率为0.001 119 5。并提出设计改进措施,以提高产品的可靠性水平。研究方法和结论对水下控制系统的可靠性设计分析有一定的指导意义。

Underwater control module is an important part of underwater production system. If it fails, it may have an important impact on property, personnel safety and marine environment. The reliability analysis of underwater control module can effectively predict or control the occurrence of faults and reduce the risks related to equipment faults. Taking the underwater control module of an oil/gas field production project in Bohai Sea as the research object, taking the abnormal function of the output port of the electromagnetic directional valve as the top event, the fault tree analysis of the high-pressure hydraulic circuit is carried out by using the Simulation X modeling and simulation tool. Through qualitative analysis, the key components and main failure modes are found out, and it is proposed that the reliability level of accumulator and electromagnetic directional valve should be focused on and improved. Through quantitative analysis, it is obtained that the occurrence probability of top event is 0.001 119 5. Design improvement measures and mitigation measures are put forward to improve the reliability level of products. The research method and conclusions have certain guiding significance for the reliability design and analysis of underwater control system.