Because galvalume coil steel cargo is prone to rolling, it affects the stability of the ship and poses a major threat to the safety of the ship. Therefore, when loading galvalume coil steel, the following points should be noted:
1. Reasonable stowage
Galvalume coil steel should be stacked layer by layer from one side of the cargo hold to the other. The axis of the steel coils should be the same as the bow line of the ship, and stacked side by side close to each other. Galvalume coil steel can generally be stacked three layers high (beware of thin coils (thickness <0.6mm), color-coated coils, can not be three layers high, and even two layers are in danger of cargo damage), depending on the strength of the cabin floor. After calculating the total load and local load of the bilge area, neither overload nor stowage is allowed. If a coil of steel cannot be placed in the middle of the bottom layer, a coil of steel (locking coil/key coil) should be placed above it to play a fixed role. When the volume, weight, and weight of the loaded coils are different, special attention should be paid to stacking according to the principle of large and small, and heavy and light.
2. Pave the galvalume coil steel liner
Study the lashing plan carefully before loading the coil. At present, the skids in all ports are unable to disperse the pressure, but are only anti-slip. Galvalume coil steel should be laid with wood planks on the ship's bottom plate and bulkheads on both sides, and the galvalume coil steel should be stacked on laterally prevented padded wooden planks, at least two. A corner wood should be placed at the bottom to prevent rolling (it is better to require the corner wood to be nailed to the bottom plank). The first coil of each row of galvalume coil steel on the two wings must lean against solid bulkheads (the sloping stows are in place, and the multi-layer plank pads must be tied up by the company!), and each piece must be at least 2 triangles immediately after the discharge Wooden lining stops moving. After loading, it is necessary to have more planks and corner timbers for spare.
3. Accurately arrange coils
The coils loaded by each ship are often of different sizes. The loading should consider that small coils should be arranged in the hatch as much as possible, and large coils should be arranged as far as possible (to facilitate loading and unloading, and some unloading ports do not have large machinery. Close and can’t move), and choose the same volume as a row; when conditions do not allow, it is best to install large coils on both sides of the cargo hold, and small coils in the middle of the cargo hold, but the working surface must be neat. Facilitate the operation of the next row. Unless the galvalume coil steel is discharged in a full cabin, for those with only part of the cabin, the only option is to start from the rear bulkhead and arrange it forward. If only one layer of high coil steel is installed, there must be at least one to two key coils on it to make the overall stable. During the loading process, pay attention to the remaining quantity, adjust it in time, and avoid the last row is not full or lack of key coil.
4. Reasonable binding
Coil lashing work should be followed up in time, tying one row after another, and proceed in sequence. (The ship is required to check carefully, double card double buckle is best, pneumatic tools are much better than manual tools).
①Each steel strip should be tightened at the closest distance between adjacent coils to prevent loosening.
② Binding of galvalume coil steel at both ends of the entire row is required;
③All the upper and lower coils of the outermost row are required to be tied up, and the number of tracks should be appropriately increased;
④If the coil is installed to three stories high, the bottom layer can be free of binding;
⑤If there is no binding position for some reasons, you can request to pack a backpack or connect the front and rear rows, and the 3 rows are connected.
If there is a steel belt tensioner on the ship, it is necessary to reserve some steel belts after loading, so as to strengthen the loose coils during the voyage.
5. Inspection management
galvalume coil steel is very sensitive to seawater and is easy to rust. When the sea breeze is high in humidity, the galvalume coil steel will rust very quickly, so the cargo hold cannot be easily ventilated. During the voyage, arrange the crew to regularly inspect the cargo hold to see if there is any abnormal noise, check the dry humidity on the surface of the galvalume coil steel, pay attention to whether there is any abnormal noise in the cabin, and whether the ship is swaying violently.
