20 Key Points For Safe Operation Of Cranes

20 Key Points For Safe Operation Of Cranes
 

1. Must be familiar with the basic performance of lifting tools, the maximum allowable load, scrapping standards and the binding of workpieces, hanging requirements and command signals, strictly implement the safety technical operating procedures of this type of work, and pass the examination. Other personnel are not allowed to engage in binding and hooking command without authorization.
 

2. Carefully check whether all the tools and equipment needed are in good condition before work. If the chains, wire ropes, hemp ropes and clamps and slings are found to be scrapped, they should not be used. And wear protective equipment.
 

3. For lifting objects, appropriate lifting methods must be adopted according to the weight, volume, shape, and type of the object. When multiple people operate, there must be a special person in charge of command.
 

4. When lifting an object, the center of gravity of the object must be stable. When transporting large items, there must be obvious signs (red flags during the day and red lights at night). All kinds of objects should be tested before lifting, and they can be lifted only after they are confirmed to be reliable.
 

5. The tripod should be fastened firmly. The distance between the poles is equal, the pole feet are fixed firmly, and it is not allowed to hang obliquely. When using a jack, you must pad it up and down firmly, pad it up and down, and pull out the skids as you fall.
 

6. The two ends of the roller bar should not exceed the bottom surface of the workpiece too long to prevent crushing hands and feet, and supervisors should be set up when rolling. People are not allowed to operate on one side of the inclined direction of gravity. The steel wire rope crossing channel shall be clearly marked.
 

7. When lifting heavy objects, try not to be too high from the ground. In any case, it is forbidden to lift heavy objects and pass over people. All personnel are not allowed to stay or walk under heavy objects, and objects are not allowed to hang for a long time. up in the air.
 

8. When using the 20 ton overhead crane, you should cooperate closely with the driver and strictly implement the "ten do not lift" regulations of the crane. Right now:
1) Do not lift the load exceeding the rated load;
2) The command signal is unknown, the weight is unknown, and the light is dim;
3) The sling and accessories are not bound firmly, and do not hang if they do not meet the safety requirements;
4) Do not hang heavy objects on the crane when they are directly processed;
5) Crooked pulling and oblique hanging;
6) Do not hang people standing on the workpiece or floating objects on the workpiece;
7) Explosive items such as oxygen cylinders and acetylene generators are not suspended;
8) Objects with fast openings with edges and corners have not been properly padded (to prevent the wire rope from being worn or cut off) and not hung;
9) Objects buried in the ground shall not be lifted without taking measures;
10) Commands that violate regulations will not be suspended.
 

9. When working, you should clarify the lifting location and the obstacles on the running passage in advance, call the lingering people to avoid it, and you should also choose the appropriate upwind position and the route for escorting the objects.
 

10. It is strictly forbidden to directly correct the ropes that have been tensioned by heavy objects by hand during work, such as steel wire ropes and chains. If you find that the binding is loose or the hoisting tools are abnormal or make strange noises during hoisting, you should stop immediately for inspection, and you must not take chances
 

11. When overturning large objects, pads such as old tires or wooden boards should be placed in advance. The operator should stand opposite the inclination direction of the heavy object, and it is strictly forbidden to stand face to face in the inclination direction.
 

12. The length of the selected steel wire rope or chain must meet the requirements, and the included angle of the steel wire rope must be appropriate, and the maximum cannot exceed 120. .
 

13. If there is oil stain on the lifting object, the oil stain on the binding place should be wiped off to prevent sliding.
 

14. When commanding multiple cranes (20 ton overhead crane and 5 ton jib crane) to jointly lift a heavy object (limited to lifting machinery with the same tonnage), it should be carried out under the direct leadership of the main technical person in charge of the enterprise. The weight distribution must not exceed the rated load of the hoisting machinery, and a certain distance between the two hoisting machinery must be ensured without collision.
 

15. Lifting large equipment or products must be operated by two people, and one person is in charge of commanding. When unloading onto the transport vehicle, it is necessary to observe whether the center of gravity is stable, and only when it is confirmed that it will not fall after untying can it be untied and unloaded.
 

16. In any case, it is strictly forbidden to use the weight of the person to balance the lifting object or lift the object with human support, and it is not allowed to stand on the object and lift it at the same time.
 

17. When lifting batches of sporadic objects, special clamping devices such as spider plants and buckets must be used, and more than two heavy objects must be lifted at the same time to keep the objects stable and prevent them from colliding with each other.
 

18. When unloading and transporting objects, it is necessary to pad the lining wood. The irregular objects should be supported to keep them stable. The objects should not be pressed on the electrical lines and pipelines, or the passages should be blocked. The objects should be stacked neatly and stably.
 

19. If there are other personnel working with the lifting hook, the lifting hook worker is responsible for safe command and lifting, and the hook worker shall not let others replace the lifting hook heavy objects under any circumstances.
 

20. After the work is over, the tools used should be cleaned of oil and dirt, and maintenance should be done to strengthen storage.