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Fuel change caused engine failure

Swedish P&I Club issues Monthly Safety Scenario for April 2015 TheSwedish P&I Club published its Monthly Safety Scenario for April 2015 regarding engine failure due to fuel change .The Swedish Club publishes on a monthly basis a new "Monthly Safety Scenario" (MSS) to assist owners in their efforts of complying with the maritime regulations.The vessel was approaching California in moderate weather conditions. The weather forecast predicted an increase to gale forces. The vessel was soon to enter the low sulphur zone and the engineers were running behind in preparing to switch over to low sulphur fuel.They did however manage to switch over just before entering the low sulphur zone. Suddenly the main engine stopped, as apparently the fuel pumps had failed.There can be difficulties when switching from one fuel to another due to low load operations and leaking pumps caused by low fuel viscosity. This is because distillate fuels can gas up at a too high temperatures causing vapour locking and fuel starvation.Low viscosity fuels will flow through fine clearances previously sealed by higher viscosity fuel resulting in fuel leakage. Distillates do not require heating like HFO. If the distillate temperature is too high, the viscosity will be greatly reduced ...

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Main engine starting failure

Need to follow ocumented procedures after carrying out main engine maintenance While in port, the engineers renewed the plungers and barrels of three units of the main engine fuel pump, but neglected to try out the engine after completion of the task.When controls were tested an hour prior to pilot boarding, the main engine could not be started. As the problem could not be immediately detected and rectified, the scheduled departure arrangements had to be postponed resulting in off hire and commercial loss. Root cause/contributory factors Non-compliance with standard operating procedures that require that the engines be tried out for satisfactory operation immediately after any repairs or maintenance; Fuel system was not primed after completion of maintenance; Control air system filters were badly choked with dirt and excess oil; Routine draining of control air bottles was not carried out properly by the ship's staff. (The practice onboard was only to 'crack open' the drain valve of the air receiver for short periods. This procedure is not enough to drain out or to check for oil or water accumulated in the bottles. Drain valve must be kept fully open for the duration as per maker's specifications to confirm that accumulated water ...

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