In marine vessel operations, protecting diesel engine lubrication systems from water ingress is critical to avoiding catastrophic mechanical failure and unplanned vessel downtime. Spectrolytic FluidInspectIR® provides a data-driven solution that detects water contamination events as they occur — enabling a shift from periodic lab sampling to real-time, condition-based intervention.
The Challenge
A marine vessel's diesel engine began showing unexplained water concentration spikes in the lubricating oil. Despite periodic lab sampling, the source and timing of the ingress could not be identified — leaving the vessel at risk of cooler failure, lubricant degradation, and unplanned downtime.
- Unexplained water spikes with no identifiable pattern using periodic lab sampling
- Risk of cooler failure and catastrophic engine damage during undetected events
- Inability of standard lab analysis to correlate water ingress with operational events
- Critical engine components left exposed between sampling intervals
- Vessel availability and health & safety implications of an unplanned failure
The Solution
A Spectrolytic FluidInspectIR® system was installed on the diesel engine to provide continuous, real-time monitoring of water concentration in the lubricating oil. Using mid-IR based chemical analysis, the system captured every water ingress event as it occurred — delivering the temporal resolution necessary to identify the root cause.
The inline data immediately revealed that water spikes were correlated with harbour mooring events — a pattern entirely invisible to periodic lab sampling. This insight enabled the engineering team to identify a failing cooler and plan its replacement before catastrophic damage occurred.
Implementation
- Installation of FluidInspectIR® on the marine diesel engine lubrication circuit
- Continuous real-time monitoring of water concentration in engine lubricating oil
- Capture and trending of water concentration data across all operational events
- Correlation of water spike events with vessel operational mode (mooring / underway)
- Root cause identification enabling planned maintenance intervention
Results
- Water concentration spikes detected in real time during harbour mooring events
- Root cause identified as a failing cooler — impossible to determine from lab samples alone
- Cooler failure identified and replaced in a planned manner before catastrophic engine damage
- Vessel availability maintained and risk of unplanned downtime eliminated
- Health & safety improved by removing reliance on manual sampling during active operations
- Protection of high-value engine components between traditional sampling intervals
Key Insight
FluidInspectIR® provided the actionable, real-time data required to identify water ingress events that were entirely invisible to periodic lab sampling — and crucially, to correlate those events with a specific operational cause. Rather than discovering cooler failure after catastrophic engine damage had occurred, the vessel operator could intervene in a planned, controlled manner the moment the pattern was identified.
Financial Benefits
Total saving over 9 months: £115,000 — comprising: avoided unplanned downtime + planned cooler replacement savings.