The insured’s vessel had suffered two generator failures in relatively quick succession causing catastrophic failure of diesel engines driving vessels main generators.
· Diesel fuel contamination by bacteria lead to rapid deterioration of critical components
in the gen-set fuel systems.
· Fuel injector spring failure was initiated by pitting of the springs from bacteria
· This lead to fuel wash in the cylinder liners, which had removed the oil from the liner
walls leading to rapid seizure.
· Leading to seizure of some pistons in the liners
· Followed by engine blocks fractured and jacket water discharged from the engine.
· Time from generator common alarm to point of catastrophic failure was insufficient
to allow generator to be auto or manually shut down.
Amount claimed circa: USD 180,000Process:
· Strip down for inspection
· Identify root cause of failure
· Prepare access for engine removal and refitting
· Remove failed diesel engines x 2 from the vessel
· Rebuild diesel engines x 2 in workshop
· Reinstall engines, realignment and test run
· Clean all contaminated fuel tanks and systems
· Fit water filtration units to the gas oil system (system improvement)
· Vessel hire loss
· Fuel management and tank circulation of marine gas oil is paramount
and needed to be implemented.
· Regular fuel analysis and load separation should be in operation.
· Water drainage points for fuel tanks should be readily accessible and drained regularly.
· Suitable gas oil filtration systems should be installed after the service tanks to ensure
capture of any sediment and water still remaining in the gas oil.
· Existing maintenance regimes needed to be improved.
· Alarm system to be modified to allow further definition of alarms instead of a common
alarm for all engine alarms.