Mooring Line Accident Causes
Mooring Accident Injuries
Routine precautions should include regular checks of the deck areas used for mooring operations. Unless already fitted with treads, mooring decks’ surfaces should be treated with antislip paint and must be kept clean and free of clutter. Mooring winches and deck fixtures and fittings should be inspected, maintained, and greased according to the vessel’s Planned Maintenance System (PMS) requirements. In particular leaking joints in hydraulic lines should be rectified, possibly considering the construction of save-alls to protect the decks from further leakage.
Fairleads and rollers should be regularly lubricated, checked for free movement, examined for wear, and bitts examined for distortion and fractures. Leads that have previously been used for wires should be inspected for metal damage before being used with fibre ropes. Winches must operate and stop smoothly and be isolated after use.
Directions of movement should be clearly marked. Winch brakes maintained in good order, with all linkages working satisfactorily and adequate brake lining thickness per the manufacturer’s instructions. Winch drums are designed such that they are most effective at holding a rope under tension when the line is pulling against the fixed end of the brake band arrangement. Therefore, it must be ensured that lines are wound onto drums according to the manufacturers’ recommendations to ensure the brake does not fail prematurely.
On winch drums fitted with disc brakes, ropes can be wound onto the drum in either direction. Regardless of type, winch brakes should be set to render at approximately 60% of the Minimum Breaking Load (MBL) of the rope on the drum. Clutches should operate smoothly, and clutch control lever securing pins fitted ready for use. Drum ends should be smooth, clean, and free from grooving damage, rust, paint and oil. Before mooring operations commencing, all winches, ropes, fixtures, and fittings should be visually examined and machinery tested; any defective equipment should be taken out of service and repaired or replaced before use.
Winch-LP
Care of Ropes
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