Through the analysis of some typical accidents, we can deepen our understanding of the law of accident occurrence and development, so as to effectively prevent and control accidents. The following are typical accident cases of safety production collected by me. For your reference
Case analysis of typical accidents in production safety
Case 1: Falling accident in X factory
1. Overview of the accident
At 15: 3 on X day, X month, 21x, X factory arranged a group of workers in the direct cyanide workshop to work overtime to assist the direct cyanide maintenance class to set up the sodium cyanide pipeline between the large sodium cyanide warehouse and the small sodium cyanide warehouse. At the after-work meeting, the squad leader Kou Moumou arranged the task of assisting the straight cyanide maintenance class to erect the pipeline, and appointed the cyanide post operator Wang Moumou to go to the aerial bridge between the large sodium cyanide warehouse and the small sodium cyanide warehouse to assist in hoisting the sodium cyanide delivery pipeline. At about 16: , Wang Mou ventured over the guardrail at the top of the acid leaching standby tank in the second stage of acid making, and went directly to the northern end of the aerial bridge to work without fastening the safety belt, causing him to fall from the bridge to the ground (the height of the bridge is 4 meters from the ground). After being sent to the Municipal Hospital of Traditional Chinese Medicine for treatment, after being diagnosed by the hospital, Wang was injured in the lumbar spine.
II. Causes and nature of the accident
(1) Direct cause of the accident
The direct cause of the accident was that Wang Mou ventured over the guardrail at the top of the acid leaching standby tank in the second stage of sulphuric acid production and went directly to the overhead bridge when his seat belt was not fastened.
(2) Indirect causes of the accident
1. Before the aerial work, the squad leader Kou Moumou did not handle the aerial work ticket according to the system and did not formulate the corresponding safety precautions;
2. Qu Moumou, the safety officer of the branch factory, failed to supervise the aerial work ticket of this unit;
3. The branch factory failed to implement the ticket management system and neglected the management of aerial work.
(3) Nature of the accident
This is a falling accident caused by illegal operation.
III. Accident prevention and rectification measures
(1) The X branch immediately organized the contents of the NoticeNo. xx issued by the Safety and Environmental Protection Department in 21x, and reported the organizational situation to the Safety and Environmental Protection Department before X, X, X;
(2)x branch immediately organized a special meeting on safety, in line with safety accidents? Four don't let go? Principle, notify the accident case and put forward preventive measures, and report the meeting to the security department before X.
(3) Each production unit should check the legacy and fill the leak in times of peace in times of peace, make use of the contents of the noticeNo. 21x issued by the Safety and Environmental Protection Department before and after work, and do a good job in handling, reviewing and filing the safety operation ticket in strict accordance with the system requirements.
(4) The branch factory should strengthen the training on the laws, regulations and operating rules of safety technology for employees.
multiple choice questions
1. The nature of the accident is (c)
A. Accident B. Criminal case C. Illegal operation D. Irresponsible accident
Case 2: Accident of calcium carbide slag polluting the road surface
I. Overview of the accident
On the morning of xx, 21x, the transport vehicle Yu U53xxx was loaded with calcium carbide slag because of its high water content. Guo Moumou and Zu Moumou, the chief of supply department, urged suppliers to take immediate measures to deal with this problem after they found it at work. Without taking any measures, the supplier and the driver of the transport vehicle walked through the factory road until the unloading position, resulting in a large number of paste-like carbide slag dripping from the trunk board, which caused road pollution in the factory area of xx Company.
II. Causes and nature of the accident
(I) Causes of the accident
1. The failure of the supplier to take measures to cross the factory road after the relevant personnel of the supply department pointed out the problems was the direct cause of the accident;
2. Although the Supply Department verbally dissuaded the supplier from dropping a large amount of paste-like carbide slag, the indirect cause of the accident was the ineffective measures.
(II) Nature of the accident
This accident is an environmental pollution accident caused by inadequate protective measures. Iii. accident prevention and rectification measures
1. the supply department should strengthen the management of suppliers and require suppliers to take effective measures in strict accordance with relevant requirements to prevent road pollution caused by the scattering of carbide slag;
2. the supply department and the security department should strengthen the daily inspection of carbide slag transport vehicles and roads in the factory area, and deal with related problems in a timely manner;
3. There is a lot of rain in the flood season, so calcium carbide slag suppliers and transport vehicles should take rainproof measures to prevent calcium carbide slag from scattering and polluting the environment due to rain.
Thinking questions
1. If you are the investigator of the accident, please tell me about your work process.
(1) set up an accident investigation team
(2) deal with the accident at the scene
(3) collect material evidence
(4) collect accident factual materials
(5) collect witness materials
(6) take photos at the scene
(7) draw accident maps
(8) cause of the accident. Compiling accident investigation report
Case 3: Object Strike Accident
1. Overview of the accident
At about 17: on the day of 21x, xx Branch arranged maintenance workers Zhu Moumou, Wang Moumou and Liu Moumou to repair the bucket of lime loading forklift. In the process of butt welding the fixed plate of the pin hole of the tipping bucket connecting rod, the fixed plate accidentally fell off, and Liu could not avoid the safety accident of breaking his left foot. After the accident, the branch immediately organized personnel to send it to the hospital for treatment.
II. Causes and nature of the accident
(1) Direct causes of the accident
Maintenance worker Liu's safety awareness is not strong, and he doesn't know enough about the potential safety hazards during the operation. Illegal operation and failure to wear labor protection articles as required are the direct causes of the accident.
(II) Indirect causes of the accident
1. Before the operation, Fan Moumou, the maintenance monitor, failed to identify the potential safety hazards and hazards during the operation, and the operators failed to implement effective communication, which was another cause of the accident.
2. The factory failed to supervise the safety measures and the wearing of labor protection articles when employees entered the confined space, which was another cause of the accident.
(III) Nature of the accident
According to the accident investigation, the accident category is a safety liability accident caused by illegal operation and failure to wear labor protection articles as required.
III. Accident prevention and rectification measures
(1) The branch immediately organized a special safety meeting to report the accident cases and preventive measures, and requested that the activities be reported to the Environmental Protection Department in writing before xx.
(2) The branch factory urges the maintenance class to revise and improve the safety operation rules according to the actual production situation, so as to prevent the alarm bell from sounding.
(3) The branch immediately organized all the staff to conduct a self-examination and self-correction activity for potential safety hazards, and reported the investigation of potential safety hazards in written form before xx.
question and answer
1. what is the accident type of the accident?
answer: the accident category is a safety liability accident caused by illegal operation and failure to wear labor protection articles as required.
Case 4 Electric shock accident
1. Overview of the accident
At about 21: 3 on X, 21x, Tang Moumou, the chief operator of the second section of the electric instrument class in X branch factory, got an electric shock due to an operation error when checking the air switch of the 1# power distribution cabinet in the electric dust operation room of acid making, and was rescued in time by Jing Moumou, the squad leader of the third class of acid making at the scene, and reported to the branch factory to send him to the hospital for treatment.
II. Causes and nature of the accident
(1) The direct cause of the accident
The chief electrician on duty, Tang Moumou, has a weak sense of safety. In the process of live working, his thoughts are not concentrated and there is no professional supervision. The direct cause of this accident is the risky illegal operation.
(2), the indirect cause of the accident
1, the electrical instrument section during the electrician's operation? The rule that a special person must be assigned for effective custody? Poor implementation; Usually, safety education and training is a mere formality, which is the main reason for this accident.
2. The factory's poor management of electricians on duty at night is the secondary cause of this accident.
(III) Nature of the accident
According to accident analysis and investigation, the accident category is a safety liability accident caused by illegal risky operation and violation of safety operation regulations.
III. Accident prevention and rectification measures
(1) The branch immediately organized a special meeting on safety, and carried out a self-examination and self-correction activity on potential safety hazards, which was reported to the Environmental Protection Department in writing before xx.
(2) The branch urged the whole staff of the electrical instrument section to learn the post safety operation procedures of * * and conduct strict examination, and reported it to the Environmental Protection Department in writing before xx.
multiple choice questions
1. The following (ABDE) factors will increase the risk of electric shock at the scene.
A. * * B. High temperature C. Wooden floor D. Mobile electrical equipment and mobile wires E. Metal equipment
Case 5 fire accident
1: What happened
At 8: a.m. on X, X, X, X, X, X, X post chemists Liu Moumou and Suo Moumou started to weigh samples for analysis at 8: 1. At 8: 13, Liu said the sample was finished and began to dissolve the sample in the west fume hood. At 8: 15, when the fume hood switch was turned on, the fume hood suddenly caught fire. Liu immediately cut off the power supply and called for help. After Suo arrived at the sample dissolving room, he found that the fume hood was on fire and the room was full of smoke. The two men evacuated from the scene after necessary disposal.
2: accident investigation
After the accident, the Safety and Environmental Protection Department, the Security Department and the Quality Inspection Department jointly investigated the accident, and initially determined that the flammable gas was accumulated in the fume hood for a long time, which was the main cause of the fire.
Fume hoods and pipes have been used for more than six years, causing combustible materials to accumulate and have not been cleaned, which is another main cause of fire.
The post operator failed to understand the subroutine of ventilation before starting the electric furnace, which was the secondary cause of fire.
3: accident prevention measures
1. Clean the exhaust cabinet regularly, check the power supply circuit and maintain the equipment.
2. Understand and discuss the operation rules of equipment, formulate feasible post operation procedures, strengthen staff business training, and put an end to preventable safety accidents.
multiple-choice questions
1. The following statement about the relationship between hazards and hidden dangers of accidents is correct (A).
a. The accident hidden danger must be a hazard
b. The hazard must be an accident hidden danger
c. The major hazard must be an accident hidden danger
d. The major hazard must be a major hazard
2. The correct way to escape by using the existing facilities in the building is (ABCE).
a. Evacuate and escape by using fire elevator
b. Escape by using indoor smoke-proof stairs, ordinary stairs and closed stairs
c. Use the balcony, corridor, refuge floor of the building and the descending device and life-saving bag set indoors. Escape with safety ropes, etc.
D. Use ordinary elevators or sightseeing elevators to take refuge and escape
E. Use wall-side downpipes to escape
Case 6 Falling accident
1. Accident course
At 16:4 on the day of 21x, the pressure indication of the drying pipeline in front of the second stage of the sulphuric acid plant in X branch was distorted. After the inspection of the pressure pipeline in front of the furnace, Jiao Moumou, the assistant operator, On the way back to the platform on the second floor of the third floor of the electric fog, the flue gas pipeline bracket fell from the bracket 2.8 meters away from the platform on the second floor, causing a right wrist fracture and a scalp scratch. When Zhao Moumou, the assistant operator, found it and reported it to the factory director, he was immediately sent to the city hospital for treatment.
Second, the cause and nature of the accident
(1) The direct cause of the accident
1. The operator Jiao Moumou violated the rules, did not wear all the safety protection articles for aerial work, and did not wear the safety belt and helmet as required;
2. Ji Moumou, the security officer of X branch, failed to supervise the aerial work ticket of his unit, and failed to handle the aerial work ticket when working at height.
(II) Indirect causes of accidents
The monitor did not pay attention to safety and did not formulate corresponding safety precautions when arranging inspection and leak-patching;
(3) Nature of the accident
This is a falling accident caused by illegal operation. Iii. accident prevention and rectification measures
x branch immediately organized a special meeting on safety, in line with safety accidents? Four don't let go? Principle, notify the accident case and put forward preventive measures, and report the meeting to the security department before X.
Case 7 Object Strike Accident Mechanical Injury Accident
Case 7.1:? x.x? Accident course:
On X, X, the maintenance worker of sulfuric acid branch was responsible for replacing the water tank in front of the furnace during the overhaul of X branch. After the water tank was unloaded, the cadres on duty left the scene and handed it over to four maintenance workers to transfer the water tank. During the transfer process, the right thumb of Peng Moumou, a roller replacement worker, was crushed due to the blind spots in the sight of the personnel pushing the water tank and replacing the roller.
Causes of the accident
1. The main reason for the accident is that the operator Peng Moumou has a weak sense of self-safety and operates illegally;
2. The direct cause of this accident is that the cadres of Baopian did not do a good job in the safety education of employees and did not monitor them all the time;
3. The indirect cause of the accident is that the safety management of xx branch factory is not in place and the safety production responsibility system, management system and operating procedures are not strictly implemented.
case 7.2:? x.x? The accident happened on the afternoon of
x month, xx Branch Company replaced the hose of the underflow hose pump of the acid leaching machine. During the reverse rotation of the hose pump, the maintenance worker He Moumou did not stand firm when he stood up and pressed his left hand into the observation hole of the hose pump cavity, and his left hand was injured by the rotating hose pump pressure stick, resulting in a fracture of his left palm.
Causes of the accident
1. The operator He Moumou's lack of safety awareness is the main cause of the accident
2. The damage of the safety protection facilities of the observation hole of the hose pump cavity is the direct cause of the accident;
3