1. 1. Chen, a crane worker in the second metalworking workshop of a heavy machine factory, is responsible for loading materials for various processing machines. At 10:00 on June 3, 2005, Chen commanded the crane to prepare to lift the semi-finished locomotive shaft to feed a machine tool.
2. Chen used a single copper wire rope tied through a buckle to lift the large shaft. After skillfully putting the copper wire rope on, he directed the lifting without carefully aligning the rope buckle with the center of the shaft. After the big axle was hoisted, Chen pressed the light end with his hand to balance the hoisting piece and followed the car.
3. When the machine tool was about to be loaded, Chen called out to the lathe worker Li, but because the machine was noisy, Li did not hear it. At this time, the hanging shaft passes through the end of the machine tool, and the tool table at the rear side of the machine tool is in the way. Chen did not get around it in time, and the hand holding the spindle head broke away, and the heavy-weighted large spindle suddenly hit the machine tool surface. Li, who was filling the machine tool guide rails with oil, was unable to dodge and his left hand was hit on the bed, causing multiple comminuted fractures on the fingers on the back of his hand.
Cause of the accident
When a single rope is used to lift a large shaft, even if it is tied in the center, one end of the shaft will be lowered due to swinging during the movement of the crane. However, if the hanging position is high, it will not be a problem. Chen hangs the shaft many times a day, and the rope is often not in the center, so he doesn't take it seriously and becomes careless. Sometimes, because the position of transporting materials is close, the hanging is not high, and the hanging parts are directly carried by hand. This time, the material delivery position was originally deviated a lot. When the lifting piece was moving, it was not considered that the crane was blocking the road. When it was almost in place, it was not cooperated with the lathe properly, and the crane was not commanded in time. As a result, the hand was suddenly released, the hanging piece lost weight, and the axle head injured someone. and accidents involving equipment damage.
Preventive measures
1. It is best to use the two-point tethering method for heavy-duty large shafts. The single rope tying method must be tied in the center and carried high to avoid hitting objects. After it is in place, slowly lower it and manually fit the upper chuck of the supporting shaft. It is strictly prohibited to hold hanging objects while traveling with the crane.
2. Before loading heavy machine tools, crane workers and machine tool workers should greet each other and be prepared. They should coordinate and cooperate during lifting and strictly abide by safety regulations for lifting and handling.
On the afternoon of September 10, 1986, a packer in a cement factory was unloading materials. After starting up, the warehouse could not unload materials, so he held a steel pipe and stood on the screw conveyor to knock on the bottom of the warehouse. After unloading the materials in the warehouse, I was ready to go down. Unexpectedly, because I was wearing foam slippers, I had difficulty moving and my center of gravity was unstable. My dislocated left foot happened to step into the 10cm wide gap on the upper part of the screw conveyor. The running machine pushed my feet and legs away. Wringed in. He immediately stopped the car and reversed the car's motion before removing his legs and feet, resulting in high amputation of his left leg.
Reason (2)
1. The packer did not wear protective equipment as required, but wore foam slippers while walking on the uneven machine. He slipped and stepped into a gap in the machine, which was the direct cause of the accident.
2. The lack of safety facilities such as cover plates or protective covers on the upper part of the 10cm wide gap in the screw conveyor was an important reason for the accident.
3. The cement plant's safety production management was ineffective, the system was not implemented, and obvious hidden dangers were not eliminated.
Measures (3)
1. During working hours, workers must wear labor protection equipment as required and are never allowed to wear slippers for work.
2. Defects and accident risks of the equipment and facilities themselves must be eliminated. If the 10cm wide gap in the screw conveyor is not necessary for the process, it should be closed; if it is unavoidable for the process or operating procedures, it should be added to the upper part. Install safety facilities such as covers or protective covers to ensure the "intrinsic safety" of equipment and facilities.
3. Cement plants must strengthen safety management, formulate detailed safety production rules and regulations, and implement comprehensive safety education for all employees; conduct regular safety inspections to check for defects and accident hazards in equipment and facilities themselves, and also check the clothing and mental attitude of personnel. status; technical forces must be organized to eliminate defects and accident risks.
On January 30, 2000, maintenance workers Li and Yang were on duty in the first compound fertilizer workshop of a company in Shanxi. They were inspecting and repairing the production site and refueling the equipment. An incident occurred. Near miss. The accident process was like this. After Li finished oiling the reducer of filter A, he had to refuel the reducer of filter B. He should have got off the ladder of platform A and then climbed the ladder of B to refuel the reducer of B. This was foolproof.
However, in order to save trouble and take a shortcut, he had to cross the platform (the distance between the A and B equipment platforms is 800mm). At that time, Li only crossed the platform without paying attention to the beam above. When crossing, the head of the helmet hit the beam above. After rebounding on the beam, the person fell onto the calcium carbonate belt conveyor running below. At this critical moment, he was discovered by Yang, a colleague who was repairing the B filter. Yang quickly pulled the rope switch and stopped the belt conveyor. A major casualty accident was avoided and Li's life was saved.
Afterwards, the factory attached great importance to this near-miss accident, and carried out criticism throughout the whole factory. Analysis and discussion were carried out among all employees. Everyone wrote down how to learn from the accident. At the same time, Li was fined 100 yuan for illegal operations, and Yang was awarded 200 yuan for emergency shutdown to avoid accidents. Preventive measures were also formulated to lengthen and heighten the protective railings of the filter platform, and to separate the A and B platforms. The intervals between rooms were changed into aisles, and protective fences were added to make them intrinsically safe. Although this near-miss has passed, it reflects the urgency and importance of improving employee safety awareness.
First, we must strengthen education. The factory requires leaders and managers at all levels to pay attention to safety with emotion, educate employees from the perspective of protecting people's lives, take safety as their bounden duty when entering the workplace, and use regulations as the criterion to standardize the safety behavior of employees.
The second is to deepen on-site walking safety management. That is, take a walk, take a look, check, and talk to understand employees' ideological trends, work emotions, and production environment in a timely manner, and promptly eliminate hidden dangers such as thoughts, emotions, and environment, so that employees can truly "come to work happily." Come and go home in peace."
(Analysis of leadership safety production mentality from the top 10 "violation psychology" of employees)
5. Hanging under the back wheel without fastening clothes 7:35 am on July 29, 2003 At the end of the day, workers in the gravel workshop of Dongling Mine were cleaning their posts in preparation for the handover of their posts. Due to tight production tasks, belt conveyors are still transporting ore. Wu Haoqiang, the operator at the 11th belt post, washes the belt conveyor at the post as usual. In order to get off work on time, he habitually used rubber hoses to flush various parts of the belt conveyor, regardless of whether the belt was still running. While he was working, he thought: finish it quickly so that he can go home from work, take a shower, and then go to the city to attend a class reunion. After he rinses the platform on the south side of the belt, the water pipe must be collected to the north side of the belt. At this time, Wu Haoqiang approached the driving wheel of the belt and the back wheel of the reducer and swung the water pipe through the belt. Because the back wheel lacked a safety cover, Wu Haoqiang's shirt was not fastened. When he swung the water pipe hard, his shirt floated up. Wu Haoqiang was caught and rotated by the back wheel screw, and Wu Haoqiang was strangled under the back wheel of the belt reducer (the condition was horrific). At the age of 22, a young life was lost like this. The main reasons for the accident: First, Wu Haoqiang violated the regulations in the safety operating regulations that "it is strictly prohibited to wash the post and transfer tools and items across the machine during the operation of the equipment"; second, there was a hidden danger of accident on the post, that is, the back wheel of the reducer lacked a safety cover. , there was no timely rectification; third, Wu Haoqiang worked habitually, took chances, and was careless.