Fig:Typical rope luffed crane
- Crane Windows
These are to be washed clean and cracked or broken windows must be replaced, and the seals checked. Hinges and locking clamps are also to be checked that they are free.
- Machinery Spaces
Must be kept clean, tidy and free from oil and water on the deck plates, and the drains must be proven clean and clear.
- Cooling Fans
These must be tested and proven in good working order. All ventilator flaps/cowlings which require to be open during crane operation, together with associated locking devices are to be free.
- Ladder ways and Platforms
These must be inspected and kept clear of any oil, grease or water on the foot treads, and the handrails must be intact and safe.
- Crane and Machinery Space Watertight Doors
Sealing rubbers to be intact and all hinges and closing handles must be oiled and kept free.
- Chain, Hook and Ponder Ball
This assembly is to be kept painted with a highly visible or fluorescent paint, most commonly dayglow orange, and must be maintained in this condition. Ponder ball swivels are to be maintained free and must be marked with the safe working load of the rig. With continual slight movement taking place between the mating faces of the chain links, it is inevitable that some wear will occur, and these areas are to be periodically checked.
- Oil Cooling Ducts and Grills
Make sure watertight access doors are open, and all trunking/cooling fins/grills are clear of residual cargo dust and obstructions.
- Slip Rings
Electrician to megger test prior to operation.
- Electric Cable Lead Pulleys
Must be checked and maintained free. Failure to maintain these in a free condition will result in the electric cable abrading/chaffing with consequent damage. Before commencement of cargo operations, the electric cable is to be manually pulled to check the free operation of the cable guide pulleys. If the guide pulleys do not move then they may be adjusted too tightly or may be seized, and steps must be taken to ensure free turning.
- Electric Power Cable/Plug and Socket
Electrician carry out a megger test prior to them being connected. On taking off the watertight covers, any residual water/moisture must be completely dried out.
Topping up of deck cranes or removal of the jibs from their crutches prior to arrival in port is strictly prohibited.
A Crane Report is to be made every time a cargo crane is in operation. These are very important and have many uses; in particular they will highlight recurring crane faults and problems which may be easily remedied. They also detail running hours, amount of cargo handled by each crane and each crane wire, and are therefore useful in forecasting a failure by comparing the actual amount of usage with the expected life of a particular component, and so prevent down-time by taking preventative action before a failure occurs.
Related articles :
Inspection, testing & certification of ships lifting gears
Safe working practice while operating ships lifting equipment
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