ship engines

Lessons learned: Main engine turbocharger lagging on fire

In its July edition of Safety Flashes, IMCA describes a case of a fire onboard due to main engine turbocharger lagging. The probable cause was namely traced to inappropriate material and workmanship in the replacement lagging work.

Loose connecting rod assembly leads to diesel generator failure

​The US National Transportation Safety Board released its report on the diesel generator failure on board the offshore supply vessel ‘Red Dawn’, on December 13, 2017. Namely, as the ship was on its way to resupply the radar station Sea-Based X-Band Radar, its number 2 main diesel engine suffered a mechanical failure. This led to the ejection of components from the cylinder block, which destroyed the engine. 

Operation on high thermal load damages engine

The Swedish Club provides lessons learned from a machinery failure. Namely, the main engine, a six cylinder medium speed type, had serious damage and had to be renewed. Moreover, the turbo charger had to be overhauled. The engine had been operated on a high thermal load for a long time and the turbocharger efficiency had been affected by fouling.

Inappropriate modification leads to accident

UK MAIB informed of a pressure accident onboard a multicat vessel. Operators carried out an unrecorded modification to the supply fan flap support brackets, without consulting the shipbuilder, which led two crew members to be sucked into the engine room with severe force. MAIB advised that any modifications need to consider all aspects of the application being altered.

Lessons learned: Serious scald during routine engine inspection

The second engineer stepped off the walkway and squeezed between two cylinder head covers. His boiler suit pocket became snagged on the operating lever of a jacket water vent valve. As the lever moved, the valve opened and pressurised water, at 75ºC, was sprayed over the second engineer.

Main engine reduced to idle speed after control module failure

IMCA informed of an offshore support vessel that was underway and received the error message , after a sudden drop of starboard main engine RPM was observed. The root cause was assumed to be extremely unfavourable conditions in the engine room.

Probable causes of main engine damage onboard ‘Chodziez’

MSIU issued a report analyzing the probable causes of the main engine damage on the RoRo cargo ship ‘Chodziez’, while en route from Oran, Algeria, to Marseille, France, in March 2017. The investigation concluded that the oil mist alarm was triggered by a mist of oil, which was generated by a hot spot, following the failure of the bearing shells.

Workboat’s engine stops working because of fuel contamination

While a workboat was trying to conduct a transfer operation, its engine stopped working. Despite the fact that the crew made several attempts to restart it, they were all unsuccessful. An investigation showed that the fuel in the tank was contaminated because of water condensation causing a bacteria buildup.

Lack of experience leads to injury onboard

The Nautical Institute issued its Mars report for 2017, where it presents a case of injury of a newly-hired crew member during his first trip, that resulted from lack of experience. The report provides a description of what happened and important lessons learned to prevent similar accidents in the future.

CO poisoning onboard motor cruiser leads to fatality

In November 2016, the owner of the 7.75m motor cruiser Vasquez fell unconscious after being overcome by carbon monoxide that had been emitted from failed rubber bellows that formed part of the inboard engine’s wet-exhaust system. Although rescuers came to his aid, it was not possible to save his life.

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