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Safe operation of working with cargo lashing chains
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Safe operation of working with cargo lashing chains
These instructions regulate the safe operation of cargo lashing operations on board ships, and make specific provisions for the operations that must be lashed, in order to ensure the safety of personnel and cargo when the ship is loaded with cargo.Get more news about lashing chain seller,you can vist our website!
2 Scope of application
All vessels using lashing chains and accessories
3 Reference documents
Cargo Securing Manual
4 Safety instructions for cargo lashing operations
4.1 When loading vehicles, mechanical equipment, bridge components, over-length cargo, steel, logs and other heavy cargo, the ship must use lashing chains or wire ropes for lashing and reinforcement.
4.2 When the ship is carrying heavy cargo, the chief mate must formulate a lashing and reinforcement plan according to the specific conditions of the cargo and the weather and sea conditions of the navigable sea area, and submit it to the master for review and implementation.
4.3 The lashing force must be greater than the moving force at the maximum heel angle that may occur to the ship, and the influence of wind pressure and wave impact should also be considered. The thickness of the wire rope and the number of lashings are determined according to the magnitude of the force.
4.4 The bosun should prepare the required materials and tools before lashing, such as: lashing chains, square wood, wooden boards, chain tensioners, wire ropes, chain ropes, wire chucks, turnbuckles, saddle tacks, shackles, etc.
4.5 The bosun is responsible for the lashing operation of the cargo according to the instructions of the chief mate. The lashing work should be assigned to an experienced sailor. The chief mate and the bosun should guide and check the quality of the lashing on the spot.
4.6 The lashing of the goods should be firm, so as not to loosen or break, and at the same time, it should be easy to untangle, so that it can be released immediately in case of danger.
4.7 When lashing, the left and right, front and rear lashings of the cargo should be basically symmetrical, and the force of each lashing should be as balanced as possible.
4.8 When lashing, the lashing horizontal angle of the lashing rope should be as small as possible, so as to reduce the stress of the lashing rope, so that the tension force of the lashing rope can be fully exerted.
4.9 When lashings are secured using ground rigging on the deck or in the hold, there shall be no more than three lashings secured per ground rig and in the same direction.
4.10 When lashing, the anchor point of the wire rope on the cargo should be firm, and the cargo should be in good condition.
4.11 When the wire rope must be bypassed and tightened from the top of the cargo, in order to prevent the cargo from being damaged due to excessive force, a firm pad should be placed under the wire rope.
4.12 When all or part of heavy cargo is loaded in the hold, necessary collars may be welded on the bulkhead according to the characteristics of the cargo and the lashing method for lashing and securing. Between the cargo and between the cargo and the ship's side, the method of padding and plugging can also be used to reinforce the lashing.