The accident of electric shock death caused by unprotected grounding or zero connection measures:
Chen Mou cleaned the site after work, and the shell was charged due to the insulation damage of the welding machine, so it was also charged with the electrically integrated workbench. When Chen XX unloaded the welded steel formwork, his hand contacted the workbench, which was an electric shock accident. He was sent to the hospital and died after being rescued. Cause analysis:
1. Because the grounding wire of the welding machine is too long, it was disconnected when cleaning the site after work the day before, the insulation of the welding machine was damaged and the shell was charged, which caused a single-phase electric shock accident.
2. lax electrical management and lack of regular inspection. Accident lessons and preventive measures:
1. Grounding or neutral connection is the lifeline to ensure the safety of power users. When the mobile electrical appliance shell is charged, if protective grounding or protective grounding is adopted, the leakage protector, automatic switch or fuse on the line can be operated or blown, and automatically separated from the power supply, thus ensuring personal safety.
2. After installing the leakage protector, the mobile electrical appliances and lines cannot be removed from the protective grounding or protective grounding.
Case 2 of electrical safety accident:
Electric shock accident caused by moving electrical equipment with electricity. 1. Accident course
One day in a certain month of p>27, the working face of a certain team was extended to move electrical equipment. At the arrival meeting, electricians Zhang and Li were arranged to be responsible for the removal of electrical equipment. The electricians Zhang and Li pulled the cable forward without power failure. At this time, the shift leader passed by and asked if there was a power failure. Zhang said. Then I moved forward. When the equipment was moved in place and the cable was hung, Li, who was hanging the cable, was shocked because of the trauma of the cable, causing an accident. Second, the analysis of the cause of the accident
1. The electricians Zhang and Li had a weak sense of safety, moved the switch without power failure, and did not listen to dissuasion, which seriously violated the operating procedures, which was the direct cause of the accident;
2. The shift leader found that Zhang and Li violated the rules, failed to stop them in time, and the on-site safety management was not in place, which was the indirect cause of the accident. Third, the division of accident responsibility
1. Electricians Zhang and Li illegally moved equipment with electricity and were directly responsible for the accident; 2, the captain found violations did not stop in time, mainly responsible for the accident; 3, the captain leadership responsibility, the secretary of the safety education is not in place. Iv. accident prevention measures
1. the power supply must be cut off before overhaul or relocation of electrical equipment. 2, underground construction must formulate detailed construction safety technical measures. 3, strengthen business skills learning, improve their own quality. 4. Strengthen the awareness of mutual insurance and independent protection. V. Lessons and feelings of the accident
This is an electromechanical accident. The reason is that the employees on duty have seriously violated the "Coal Mine Safety Regulations" and the regulations on the prohibition of moving electrical equipment with electricity, and their safety awareness is weak. As electromechanical technicians, they should be cautious and operate according to the rules. Monitor and shift leader should actively play the role of on-site coordination and supervision, and strictly implement safety technical measures.
Case 3 of electricity safety accident:
Electric shock accident caused by live working
1. Accident course
On November 13th, 27, Wang found that two fluorescent lamps in the meeting room of the company were not on, so he repaired them himself. He pulled the table, ready to remove the fluorescent lamp to check what was wrong. During the process of removing the fluorescent lamp, his hand touched the charged phase line when holding the fluorescent lamp holder with his hand, and he was shocked. Because he was unstable, he fell off the table. Second, the analysis of the cause of the accident
1. Wang's lack of safety awareness, failure to take necessary preventive measures when maintaining electrical appliances, live working, and failure to use any tools are the direct causes of the accident;
2. Wang operated alone, and there was no guardian, which was the indirect cause of the incident. Third, the division of accident responsibility
1. Wang has a weak sense of safety, and he is mainly responsible for the accident when he repairs fluorescent lamps without maintenance tools and electricity; 2. The fluorescent lamp in the meeting room of the team site was damaged, and the team leader failed to find it in time and contact the service company for maintenance, so he was responsible for the accident. Iv. accident prevention measures
1. strengthen the study of safety knowledge and improve safety awareness;
2. When operating and maintaining electrical circuits and equipment, the system of stopping power transmission should be strictly implemented.
3. Use protective equipment and tools correctly, do not work independently, and do "one person for supervision and one person for operation".