Lifting operations 1: What are the potential risks during lifting operations?

1. Instability of lifting machinery 2. Instability of lifting systems 3. Instability of lifting equipment or components

Lifting operations refer to the process of using various lifting equipment to lift devices, workpieces, tools, materials, etc., in order to change their position. There are a variety of lifting equipment, and the working environments are complex; potential risks include ； (1) The lifting operation site contains equipment and pipelines containing hazardous materials; if not handled properly, the lifting gear or the load may collide with these equipment and pipelines, resulting in damage to them and leading to leaks of hazardous materials. This in turn can cause accidents such as poisoning, chemical burns, fires, and explosions. (2) When carrying out lifting operations near overhead power lines, if the operation is not performed properly, the lifting equipment or the load may come into contact with the live lines, posing risks of electric shock to personnel, damage to the power lines, and power outages. (3) When carrying out outdoor lifting operations in heavy snow, heavy rain, dense fog, or winds of force 6 or above, there is a risk of various lifting injuries or damage to the lifted items due to poor visibility, slippery conditions, strong winds, and other factors. (4) Issues exist with lifting machinery, lifting gear, rigging, safety devices, etc. Additionally, lifting gear and rigging are used indiscriminately without proper calculations. As a result, there is a risk of damage to the lifting gear and rigging during the lifting process, as well as the risk of the lifted objects falling and getting damaged. (5) Lifting was performed without adhering to the specified load limits; no test lift was conducted; crane supports were not properly and stably set up. This poses a risk of crane overturning. (6) Using pipelines, pipe supports, utility poles, mechanical and electrical equipment, etc., as lifting anchor points poses a risk of damaging such pipelines, pipe supports, utility poles, and mechanical/electrical equipment; it may also lead to other secondary accidents. (7) Situations such as loose binding, securing, or hanging of loads; unbalanced hanging; knotted or incomplete rigging; diagonal pulling of heavy objects; and lack of padding between loads with sharp edges and steel wires all pose a risk of the load falling. (8) During lifting operations, if personnel pass through or remain under the area where the lifted load and crane boom are moving, or if there are people on the lifted load, there is a risk of the load falling or objects striking people, resulting in casualties. (9) Crane operators and commanders lack professionalism; their operations are not standardized, posing a risk of various lifting accidents. (10) When crane operators are at heights, there is a risk of falling from heights due to careless movement. 【Case】On July 17, 2001, the air compressor filters for a certain company arrived, and an 81-ton truck crane was used to lift them and unload them from the rear of the truck. When the second air filter unit was lifted out of the truck and began to fall, the body of the container scraped against the upper part of the right side compartment of the truck at the southwest corner; as a result, the container tilted sharply to one side. At the same time, the crane’s boom rose, causing the load to fall rapidly and hitting Ren, who was within the radius of rotation of the load. Despite attempts to save him, he died. The cause of the accident was that the crane operator failed to accurately determine the weight of the load; he underestimated it and took risky actions in violation of regulations ； Poor management of lifting operations; no professional lift supervisors or riggers assigned ； The unloading location is inappropriate, and there are people within the operating radius.