The lubricating oil systems are essential for ensuring the safe and reliable operation of the cruise ships power plants as demonstrated by recent incidents. The aim of this study is to investigate the safety enhancement of a cruise ship lubricating oil system by employing safety, reliability, availability and diagnosability analyses, which are based on the system functional modelling implemented in the MADe™ software. The safety analysis is implemented by combining a Failure Modes, Effects and Criticality Analysis and the systems functional Fault Tree Analysis. Subsequently, Reliability Block Diagrams are employed to estimate the system reliability and availability metrics. The MADe™ toolbox for determining sensors locations is employed for a more advanced diagnostic system development. A number of design modifications are proposed and the alternative configurations reliability metrics are estimated. The derived results demonstrate that the suction strainer and the lubricating oil pump are the most critical system components. Seven additional sensors are proposed to enhance the original system design. Compared with the original system design, the investigated alternative designs exhibit significantly lower probabilities of failure and higher values of availability.

正如最近发生的事件所表明的那样，润滑油系统对于确保游轮发电厂的安全可靠运行至关重要。这项研究的目的是通过基于MADe™软件中实现的系统功能建模的安全性，可靠性，可用性和可诊断性分析来研究提高游轮润滑油系统的安全性。通过将故障模式，影响和关键性分析与系统功能故障树分析相结合来实施安全分析。随后，采用可靠性框图来估计系统可靠性和可用性指标。用于确定传感器位置的MADe™工具箱用于更高级的诊断系统开发。提出了许多设计修改，并估计了替代配置的可靠性指标。得出的结果表明，吸滤器和润滑油泵是最关键的系统组件。提出了七个额外的传感器来增强原始系统设计。与原始系统设计相比，研究过的替代设计表现出明显更低的故障概率和更高的可用性值。