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Home - News - Comprehensive Safety Guidelines for Crawler Crane Operations

Comprehensive Safety Guidelines for Crawler Crane Operations

June 29, 2023
1. Prior to operation, ensure that each part's structure is not deformed, the connecting pin is securely fastened, the joints are properly welded, the assembly is correctly positioned, the platform is level, and the wire ropes are securely fixed. Also, ensure that there is sufficient free operating space.
2. The operator and crane supervisor must have a thorough understanding of the crawler crane's working principles, structure, and safety device adjustments before operation. The operator should perform a self-check of the crane to ensure safe operation. If any abnormalities are noticed during operation, the crane supervisor must promptly inform the operator to address the issues.
3. In the event of sudden strong winds during operation, immediately cease operations and position the main boom in the downwind direction or lower it to the lowest position.
4. Installation of structures to increase wind resistance on the crane is strictly prohibited.
5. The work site for the crane should be level and stable. If the ground is not level or stable, it should be leveled and compacted before commencing operations.
6. Only operators and crane supervisors who possess a "Special Type of Work Operation Certificate" are permitted to operate the crane. Unauthorized personnel are strictly prohibited from operating the crane independently.
7. Operators and crane supervisors are not allowed to leave their posts while loads are suspended in the air.
8. Operators should maintain records of crane usage, maintenance, repairs, and shift handovers.
9. Operators must not operate the crane under the influence of alcohol, when feeling unwell, or when fatigued. It is strictly prohibited to operate the crane without a qualified operator.
10. Safety devices must be regularly inspected and kept in proper working order. Moving or disassembling the safety devices is strictly prohibited. During maintenance or repairs, the crane must be in a non-operating state, and maintenance work should not be carried out while the crane is in operation.
11. Avoid allowing the hook to touch the ground during operations. If the hook must touch the ground, pay attention to the arrangement of the wire rope on the winch drum to prevent disorderly winding. If necessary, reorganize the wire rope to ensure it is neatly arranged.
12. The wire ropes used in the crawler crane and for hoisting purposes must undergo regular inspections and only be used if they meet the required standards. During use, the wire ropes should be frequently checked for any signs of wear or damage. If necessary, downgraded wire ropes should be replaced, and worn-out wire ropes should be discarded.
13. The use of qualified shackles is mandatory, and they must meet the lifting requirements. It is strictly prohibited to substitute smaller shackles for larger ones. Regular inspections should be conducted during use.
14. Clear and precise signals and gestures must be established for commanding the crane operations. It is recommended to use walkie-talkies for communication. Command signals must be accurately conveyed. If the operator encounters an unfamiliar signal, they must not proceed blindly. The operator should sound the horn to alert others and resume operation only after confirming the signal.
15. During crane operation, maintain a uniform and stable speed. Avoid sudden braking or changing the direction of travel or rotation without coming to a complete stop. When lowering the hook, do so gently at a low speed.
16. After completing each shift, the crawler crane must move out of the tower crane's rotation area on the construction site and lower the main boom to the lowest position.
17. Before commencing formal operations, the operator must ensure the reliability of each safety device. It is strictly prohibited to continue working if any safety device is found to be malfunctioning.
18. When conducting lifting operations, ensure that the load is securely fastened. The hook's suspension point should align with the center of gravity of the load, and the wire rope should be kept vertical. When lowering the hook, take precautions to prevent the load from partially touching the ground, causing the wire rope to become disordered. Under no circumstances should the hook be released when the load is not secured.
19. The included angle between the lifting jacks and the wire rope should generally not exceed 90 degrees, and the maximum angle must not exceed 120 degrees.
20. When hoisting large or irregular components, use sturdy rigging to secure the load.
21. Cease operations when wind speeds reach level 6 or higher. Working in rain or snow is strictly prohibited, and anti-skid measures must be taken after work is completed.
22. Follow operational procedures and adhere to the "ten no-hanging" principle during hoisting operations.
23. When following load commands, ensure the load is directed to avoid people and obstacles at all times.
24. In the hoisting area, establish a safety cordon and assign a dedicated person for supervision.
25. When lifting heavy objects, the crane should generally use designated lifting channels. It is strictly prohibited to pass over the heads of personnel.
26. In the event of a crane failure or abnormality during operation, take measures to lower the load and perform maintenance after stopping the operation. Adjustments or maintenance work during operation are strictly prohibited. The crane must not use free fall to lower the hook or heavy objects.
27. It is strictly prohibited to use operating equipment, pipelines, scaffolds, platforms, etc., as load-bearing points for lifting heavy objects.
28. The crane should be equipped with appropriate fire extinguishing devices. Insulation pads should be placed in the operating room, and flammable materials must not be stored.
29. Changes or replacements to the crane's components and devices are not permitted without the authorization of the machinery department.
30. When the crawler crane is in motion, secure the swing platform, boom, and hook. It is not allowed to slide in neutral when descending a slope.
31. The crawler crane, when equipped with a 70-meter main boom, is not permitted to travel while lifting objects.
32. In the event of lightning strikes, earthquakes, or predicted earthquakes, stop all operations. Place the load on the ground, lower the boom to the lowest position, engage the brakes and other safety devices, turn off the engine, and evacuate the area.
33. Hoisting operations require the establishment of a safety cordon in the hoisting area, with dedicated supervision.
34. After completing work, the work site must be cleared, and all materials must be properly stored.
35. Operators and crane supervisors should continuously improve their command skills and conduct on-site training during free time.
36. Sufficient lighting is essential for night-time construction, and operations must cease if there are safety hazards.
37. Operators should follow the commands and signals of the crane supervisor. If a command signal is unclear or may lead to an accident, the operator should refuse to execute it and immediately inform the supervisor. Operators must heed danger signals from anyone.
38. Before each crane operation, the operator should issue an alert signal. When lifting heavy loads, no one should be present on the boom or the load.
39. During the initial lifting phase, use micro-motion signals, and switch to normal speed when the load is 10cm-20cm off the ground and stable. When the load is finally placed, use micro-motion signals for precise positioning.
40. Take measures to prevent wire rope twisting or knotting. The steel wire rope should be well lubricated with an appropriate lubricant that does not impede visual inspections. Avoid direct contact between the wire rope and sharp edges or corners of objects, and use semi-circular pipes or wooden boards for padding.
41. Avoid using braided wire ropes for the hoisting and luffing mechanisms of the crane.
42. During mechanical movement, ensure that the steel wire rope does not rub against other objects or itself.
43. Strictly prevent the steel wire rope from coming into contact with any electrified body. It must also be kept away from hot objects, flames, and direct connections with other wire ropes.
44. Lateral forces must not be applied to the unloading latch, and the unloading pin should not be fastened to the rigging with excessive mobility.
45. When parking or traveling, maintain a distance between the front end or outer edge of the crawler and the edge of a ditch or pit that is at least 1.2 times the depth of the ditch or pit. If this requirement is not met, take anti-tilting and anti-collapse measures.
46. Smoking or using open flames during refueling is strictly prohibited. In the event of an oil fire, use a foam fire extinguisher or sand to extinguish it. Water should not be used.
47. Construction personnel must carefully read and understand the safety guidelines, sign the acknowledgment, and proceed with the construction activities.
Please note that while I have rewritten and expanded the given guidelines, it is always important to consult the specific safety regulations and guidelines provided by the crane manufacturer and relevant authorities in your region.