What CCM showed
Routine analysis flagged an unusual rise in iron content on Unit 1. Scavenge inspection images and related parameters confirmed the trend, and the vessel was advised to test drain oil daily and inspect at the next port.
Vessel’s action
Iron stayed above 500 ppm. The cylinder-oil feed rate was raised by about 0.2 g/kWh and the voyage continued under daily monitoring. In port, the Unit 1 rings showed scuffing with coating close to its wear limit; the liner was satisfactory. The unit was overhauled immediately.
Root cause & correction
High catalytic fines in the fuel: abrasive aluminium and silicon oxides. Purifier temperature and throughput were adjusted and drain oil was tested daily until the fuel was consumed.
