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Common ship mechanical failures and their treatment measures in ship inspection Part 1

2022-01-03

 Ship machinery and equipment are affected by various factors during shipping, which leads to a decline in the function and technology of ship machinery and equipment, and may cause serious failures in the performance of machinery and equipment, and may even cause damage to personnel and property on board Security risks. Therefore, the safety management of ship equipment should be strengthened to ensure the safety of personnel on board and ship equipment.
 
1. Types of mechanical equipment failures during ship inspection
 
1. Lack of spare oil pump set for ships
In order to reduce navigation costs, some shipping companies lack spare oil pump sets on ships.
The rudder of a ship mainly drives an oil pump unit through a motor, which will make it difficult for the ship to turn the rudder in an emergency, resulting in mechanical equipment failures and potential safety hazards during the ship’s navigation, which will cause the ship’s emergency rudder to fail And other issues.
 
2. The propeller of the ship is faulty
The propeller is the power mechanical equipment for ship navigation. When the propeller of the ship fails, it will have a great impact on the speed of the ship and the driving of the ship.
When the propeller breaks and separates, it will affect the speed of the ship, causing the ship to be unstable during navigation. After the ship accelerates, it will vibrate greatly. The failure of the propeller has a great impact on the stable navigation of the ship.
 
3. The ship has the problem of water cut-off and tank holding
During the trial voyage of the ship, if the ship stops after the voyage and the water temperature reaches 100°C, and the ship's flywheel malfunctions, the ship needs to be strictly inspected.
During the inspection process, the fuel injection pump, intake pipe and oil circuit were not malfunctioning, and the propeller was in normal operation.
After disassembling the diesel engine, if it is found that there is a lot of sand in the gap of the body, and the piston and the cylinder liner are bitten, then there is a problem of water failure and holding the cylinder.