The precautions for the use of combination rigging include

1. Selecting Combination Method Reasonably: Choose the appropriate combination method based on specific work scenarios and requirements to ensure safe and reliable lifting.

2. Strict Adherence to Regulations: Follow relevant operating procedures and safety standards, and use combination rigging correctly, avoiding overloading or improper operation.

3. Regular Inspection and Maintenance: Regularly inspect the condition of combination rigging, including wire ropes, lifting rings, hooks, and other components, to ensure they are in good condition and prevent accidents caused by wear or damage.

4. Proper Placement of Lifting Objects: Ensure that lifting objects are evenly loaded during lifting to avoid dangerous situations caused by uneven loading.

5. Attention to Protective Measures: Necessary protective measures should be taken when using combination rigging to ensure the safety of personnel and the surrounding environment.

6. Prohibition of Overloading: Do not exceed the rated load capacity of the combination rigging, and strictly prohibit overloading to prevent serious accidents.

7. Timely Handling of Damaged Parts: If any damage or abnormality is found in the combination rigging, immediately stop using it and promptly replace or repair the damaged parts.

8. Designated Personnel Operation: The use of combination rigging should be operated by trained and qualified professionals to ensure safe and reliable lifting operations.

In summary, the rational use and maintenance of combination rigging are crucial for ensuring the safety and smooth progress of lifting operations.