1. Propagandize ppt courseware with common sense of electricity safety

Propagandize ppt courseware with common sense of electricity safety 1. How to use electricity safely pPt

safe voltage refers to the voltage that does not cause direct death or disability, and the "safe extra-low voltage" that allows continuous contact under general environmental conditions is 36V. According to industry regulations, the safe voltage is not higher than 36V, the continuous contact safe voltage is 24V, and the safe current is 11mA. The harm degree of electric shock to human body mainly depends on the current passing through human body and the length of electrifying time.

the greater the current intensity, the greater the fatal danger; The longer it lasts, the more likely it is to die. The minimum current that can cause people to feel is called perceived current, which is 1mA for AC and 5 mA for DC. The maximum current that people can get rid of by themselves after getting an electric shock is called getting rid of current, with an AC of 11mA and a DC of 51mA；. A life-threatening current in a short period of time is called a lethal current. For example, a current of 111mA passing through the human body for 1s can be fatal, so the lethal current is 51mA. In the case of electric shock protection device, the current allowed by human body can generally be considered as 31mA.

the duration of current passing through human body is an important factor affecting the degree of electric shock injury. The longer the human body passes through the current, the lower the human body resistance will be, and the greater the current will be, the more serious the consequences will be. On the other hand, every time the human heart contracts and expands, there is an interval of about 1.1 second, which is the most sensitive to current. If the current passes through the heart at this moment, even if the current is very small (a few milliamps), it will cause heart tremor; If the current does not pass through the heart at this moment, even if the current is large, it will not cause cardiac paralysis. Therefore, if the current lasts more than 1.1 seconds, it will inevitably coincide with the most sensitive gap of the heart and cause great danger.

The path of current passing through the heart will lead to nerve disorder, cardiac arrest and blood circulation interruption, which is the most dangerous. Among them, the path of current flowing from left hand to right foot is the most dangerous.

2. Instructions for safe use of electricity in chemical plants PPT version

Instructions for safe use of electricity in chemical plants to prevent electric shock accidents. Second, the electrical safety protection facilities are not perfect; Third, electrical safety education is not implemented.

therefore, in order to prevent the occurrence of electric shock accidents, we must do a good job in these three aspects, and we must not neglect the work. 2 improve the electrical safety organization electrician is a special type of work in chemical plants, and it is also one of the accident-prone types. Therefore, electricians must have rich knowledge of electrical safety.

electricians must go through formal study and training, pass the examination and obtain electrician's operation certificate before they can take up their posts. Both the safety technology department and the electrical department of the chemical plant should be equipped with experienced electricians as or concurrently as workshop safety officers.

the main duties of the electrical safety officer are: to implement various safety rules and regulations and various safety technical measures, and to contact the safety technical department and the electrical department to solve major electrical safety problems. 3 Electrical inspection includes the following contents: (1) Check whether the insulation of electrical lines and equipment is in good condition, and if necessary, measure whether the insulation resistance value is qualified; (2) Whether the protective grounding and zero connection of all kinds of electrical equipment are reliable and whether the protective device meets the requirements; (3) Check whether the electric shock protector and operating voltage of various mobile appliances (such as hand drills, low-voltage running lights, mobile fans, etc.) are qualified and meet the requirements; (4) Whether the installation position of the newly installed electrical equipment is reasonable, and whether it is safe and reliable (5) Whether the safety appliances such as insulating gloves, insulating boots and insulating pads are complete, and if necessary, the pressure resistance inspection shall be carried out; (6) Whether the electrical fire extinguishing equipment is complete and effective; (7) Check whether the implementation of the electrical safety system of each team has been implemented. 4. Improve the electrical safety protection facilities. The electrical safety protection facilities, including the safety shielding and safety protection of electrical equipment, and the selection of electrical equipment during design and installation, should meet the requirements of electrical safety technology.

therefore, if there is any unsafe factor in the inspection of electrical safety specialty, it should be rectified in time to eliminate hidden dangers. 5 Implement the safety education for employees. In addition to the special training for electricians, the employees of the whole factory should regularly carry out safety education for electricity use.

the purpose of electricity safety education is to make the broad masses of workers know the basic knowledge of electricity use and master the basic methods of safe electricity use. It is more important to know the importance of safe use of electricity.

6 The safety education for chemical workers should not only educate the basic knowledge of electricity, the safe operation of common gas in vehicles, and the seriousness of electric shock accidents, but also require "ten prohibitions" on electricity safety. (1) No one is allowed to play with electrical equipment and switches; (2) Non-electricians are not allowed to disassemble and repair electrical equipment and appliances. If damaged wires, switches, lamp holders and sockets are found, they should contact electricians for repair in time; (3) It is not allowed to connect the electrical equipment privately, and it is not allowed to directly insert the power cord of the electrical appliance into the socket. (4) Electrical equipment with damaged insulation is not allowed to be used; (5) No private use of electrical equipment and light bulbs for heating; (6) Don't flush the electrical equipment with water, and don't use wet hands and metal objects to pull the live electric gas switch; (7) The fuse is blown, and it is not allowed to change the fuse with inconsistent capacity; 8) Do not move safety facilities such as electrical safety signs and fences without authorization; (9) Electrical equipment of the machine under maintenance is not allowed to be used; (11) Do not use stoves or blowtorches near live wires and live equipment, and do not approach heating equipment or steam pipes.

steel tape and leather tape cannot be used for measurement around live equipment. 7 the law of electric shock accidents 1. seasonality of electric shock accidents Generally, electric shock accidents in summer are obviously more than those in other seasons.

According to statistics, among the electric shock accidents from June to September, low-voltage electric shock accidents accounted for about 81% of the annual low-voltage electric shock accidents. High-voltage electric shock accounts for 41% of high-voltage electric shock accidents in the whole year. In the dispute of high and low voltage electric shock accidents, August is the highest month of the year.

there are several reasons for seasonality. (1) The high temperature in summer, the thin clothes worn by workers, the large exposed area of human skin, and the part covered by clothes will increase the chance of electric shock and the consequences will be more serious.

(2) due to poor rest at night in summer, people get an electric shock due to lack of concentration in their work or mistakes in operation; (3) summer is also a season with high failure rate of electrical equipment. Often due to the influence of high temperature, humidity, heavy rain, lightning, hail and other factors, the probability of failure of equipment and lines increases; Therefore, the maintenance workload increases, which also increases the chance of electric shock; (4) Most chemical plants are scheduled for overhaul during June-October, so the chances of electricity contact increase.

2. The accident of low-voltage electric shock is higher than that of high-voltage electric shock (1) Because there are more opportunities for the use and maintenance of low-voltage equipment than high-voltage, the number of electric shock machines will increase; (2) Most people who use or operate low-voltage electrical equipment are non-electricians, and there are many people, so the chance of getting an electric shock increases; The operators of high-voltage equipment are mostly professional electricians, with a small number and low accident rate; (3) People who use low-voltage equipment often pay insufficient attention to safety protection, so the number of contact motors will also increase. 3. Non-electrician electric shock accident redundant electrician (1) Most of the people who directly operate electrical equipment are non-electricians, because there are many people and there are more opportunities for electric shock; (2) The electrical knowledge and safety awareness of non-electricians are relatively insufficient, which makes the consequences of electric shock more serious.

3. The failure rate of electric shock when using hand-held power tools and mobile electrical equipment is higher than that when using fixed electrical equipment. (1) When using hand-held power tools, there is a big shock, which is easy to cause insulation damage or structural damage, which leads to electric shock accidents. (2) The power cord of hand-held power tools is easy to wear at the lead-out part, which will cause electric shock accidents once the core conductor is exposed or touches the metal shell. (3) Many hand-held power tools have failed to really work with their metal shell grounding (zero connection) protection. If there is protective wiring at the plug part, there is no protective wire at the socket part, or the protective wire itself is broken or detached from the terminal, it is easy to cause electric shock accidents; (4) The power supply is not cut off when the tool is stopped or the mobile electrical equipment is moving, which causes an electric shock accident after the power cord is pulled off or crushed; (5) These tools or equipment are often held tightly when in use, and once they are shocked, they are not easy to shake off, and the consequences are even more severe.

3.18.3 Courseware "How to Use Electricity Safely"

1. Apply for electricity, find an electrician for installation and maintenance, and don't pick it up privately.

2. It is everyone's responsibility to use electricity safely, and consciously abide by the rules and regulations for safe use of electricity. Fuses should be selected reasonably for low-voltage electricity consumption, and copper, aluminum and iron wires are strictly prohibited to replace them. The switch should control the fire line. Household electricity should be equipped with leakage protectors.

3. Don't build houses, pile firewood, plant trees under wires, or show movies near wires and other equipment to prevent electric shock and fire.

4. When ships cross the river line, they should put down their masts as early as possible, drive motor vehicles or work in the field, and don't touch poles and stay wires.

5. Don't quarry and shoot near the electric wire, dig a hole or borrow soil near the electric pole, and don't tie animals to the electric pole, and don't destroy the stay wire to prevent the pole from being broken.

6. Power lines, communication lines and broadcasting lines should be clearly separated. When the wires are found to be connected with other lines, immediately cut off the power and find an electrician to handle it.

7. Educate children not to touch (collide with) electrical equipment, climb poles, transformers, shake cables, fly kites or shoot birds near wires, and do not throw things on wires, porcelain bottles and transformers.

8. Don't get close to the broken wire. Send someone to watch it and find an electrician to repair it quickly.

9. Temporary electrical equipment, such as small water pumps and threshers, are not allowed to move with electricity. Hooks are not allowed to connect with electricity. Broken strands, underground climbing lines and waist lines are not allowed to be used.

11. Touch the lamp holder, switch, socket and other metal casings of household appliances by hand, and the metal casings of household appliances should be properly grounded.

11, don't use unqualified lamp caps, light wires, switches, sockets and other electrical equipment.

12. Users should report to the electric power department in time when they find that the high-voltage and low-voltage electrical equipment is disconnected, flashover, smoking or other abnormal conditions.

Safety in rural electricity consumption

1. Rural users should install leakage protectors.

2. It is forbidden to pull temporary wires and use lamp holders with sockets for household electricity.

3. If the electrical appliance is abnormal, turn off the power switch first, and then repair it. If there is smoke, fire or explosion in the electrical appliance at the same time, don't turn off the power with your bare hands, and call an electrician as soon as possible.

4. check the insulation of newly purchased and long-term discontinued electrical equipment before use.

5. When the shell, handle switch and mechanical protection of electrical appliances are damaged or out of order, they should be repaired in time, and shall not be used without repair.

6. clothes are not allowed to be hung on the power line. The clothesline (rope) should keep a horizontal distance of more than 1.25m from the power line.

7. Communication lines, broadcasting lines and power lines are not allowed to be erected on the same pole. The communication line, broadcast line and power line should be clearly separated when entering the house. When the power line is found to overlap with other lines, you should immediately find an electrician to deal with it.

8. When using the electric hand drill, the following safety precautions should be paid attention to:

1) The power cord and the grounding wire of the shell shall be rubber sheathed flexible wires, and the shell shall be reliably grounded.

2) Operators should wear insulating gloves or shoes and stand on insulating mats or dry wooden boards and benches. Operators are forbidden to wear gloves.

9. don't approach the power line when it is found to be broken. Leave the landing point of the conductor 8 meters away, guard the scene and find an electrician to deal with it immediately.

11. After the action of the leakage protector, find out the action reason immediately. If there is no abnormal situation, you can try to send power once, and then trip again after the test. You must find out the fault point and deal with it before sending power.

11. If the electrical appliance is abnormal, such as the light is off, the TV is shadowless or silent, etc., turn off the power switch first, and then make repairs. If the electrical appliance is smoking, catching fire or exploding at the same time, don't turn off the power with your bare hands, and call an electrician as soon as possible.

4. illustrated power safety education wall chart

power safety education wall chartNo.: AN1991, each set of 6 sheets, specifications: 76X52cm. You can select one sheet

Real-time special science education products designed and developed based on the important events of power safety work and the key points of safety production. The content is easy to understand, easy to understand and illustrated, which not only pays attention to the popularization education of electricity safety knowledge, but also highlights the theme of this year's safety production publicity. It is the first choice for safety publicity and knowledge popularization.

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5. Safety education in kindergarten middle class, power safety teaching plan

The first-first Z courseware B network activity.

2. Cultivate children's independent thinking ability and interest in scientific exploration. 3. Educate children to pay attention to safe use of electricity in their daily lives.

activity preparation: dry batteries, 1.5V electric beads, long wood chips, copper wires, nails, plastic bags, cloth strips, paper strips, rubber tubes, plastic tubes, wool, sorting boxes, etc., the number of which is equal to that of children. Children have knowledge about the positive and negative electrodes of batteries.

Activity process: 1. Show materials to arouse children's hands-on interest. 2, children hands-on operation, explore the secret.

(1) explain the operation method. Children explore while operating. Put one end of everything on the negative electrode of the battery and the other end on the small light bulb at the positive electrode of the battery to see which can make the light bulb light up and which can't.

think about why, and separate the results with sorting boxes. (2) Children are free to study and operate, and teachers are guided by tour.

(3) Ask children to discuss the operation results with each other. (4) Please select children's representatives from each group to talk about their own operation.

3. Educate children to use electricity safely. A person's body can conduct electricity. When plugging in a plug, you can't touch the metal sheet of the plug, you can't put your hand into the socket, and you can't touch the power supply and wires casually.

6. Common sense of safe use of electricity

Common sense of safe use of electricity 1. The insulation of power lines and electrical equipment must be good, and the live parts such as lamp holders, sockets and switches must never be exposed to prevent electric shock.

2. Don't pull and connect wires randomly to prevent electric shock or fire. 3, don't stand on the wet ground to move charged objects or try to clean charged household appliances with a damp rag to prevent electric shock.

4. Guarantee