2. The electrical equipment and wiring facilities in the laboratory must be implemented in strict accordance with the requirements of safety regulations and equipment, and it is not allowed to connect and pull wires indiscriminately. The wall power supply shall not be removed or changed without permission.
3. When the laboratory uses a variety of electrical equipment at the same time, its total electricity consumption and branch electricity consumption should be less than the design capacity. The total power load connected to the terminal board cannot exceed the maximum capacity of the terminal board.
4. The laboratory should use air switch and be equipped with necessary leakage protector and overload protection; Electrical equipment and large instruments must be well grounded, and hidden dangers such as wire aging should be regularly checked and eliminated in time.
5. Don't touch plugs, live parts or equipment with wet hands and objects.
6. Knife switches, wooden switchboards and flower lines shall not be used.
7. The circuit board cannot be directly placed on the ground, and multiple circuit boards cannot be connected in series.
8. The power socket should be fixed; Do not use damaged power sockets; The air conditioner should have a special socket.
9. Matters needing attention in laboratory electricity utilization:
A. check the electrical equipment before the experiment, and then turn on the power supply; After the experiment, turn off the instruments and equipment first, and then turn off the power supply.
B. When the staff leaves the laboratory or suddenly loses power, the power supply, especially the power switch of heating appliances, should be turned off.
C the power cord shall not be placed on the channel at will, so as to avoid absolute damage and short circuit.
10. In the electrical open experiment or scientific research laboratory, more than two people are needed to carry out the experiment.
1 1. Electrical equipment is considered to have electricity without verification, and cannot be touched blindly.
12. Never bring power, dial or connect wires.
13. When trimming the electronic circuit board after welding, the trimming surface should be far away from the body, especially the face, so as to avoid the clamped pins from being damaged by bullets.
14. After testing or when idle, the high-voltage capacitor should be discharged in series with an appropriate resistor.
15. When the low-voltage circuit test needs live working, it is safer to work with one hand than with both hands.
16. When using the capacitor, pay attention to the polarity and withstand voltage of the capacitor. When the voltage of the capacitor is higher than the withstand voltage of the capacitor, it will cause the capacitor to burst and hurt people.
17. When using an electric soldering iron, you should pay attention to:
A. don't mess with solder;
B put the soldering iron back in time, and cut off the power supply in time after use;
C. inflammable articles shall not be placed around.
18. Electric equipment such as electric stove and oven are in use, and users are not allowed to leave.
19. It is forbidden to use electric kettles in the laboratory, which give off heat quickly.
20. Computers, air conditioners and drinking fountains should not be turned on all night without anyone.
2 1. Turn off the main power switch of the laboratory when you leave the laboratory every day.
22. Distribution, switches, transformers and other electrical equipment accessories shall not be stacked with inflammable, explosive, humid and other items that affect operation.
23. In order to prevent electric shock (electric shock), the metal shell of electrical equipment must be grounded.
24. Basic measures to prevent electrical fire;
A. It is forbidden to connect non-electrical power lines and pull temporary power lines indiscriminately;
B. Two or more people should be present when doing electrical experiments;
C. remove inflammable and explosive materials from the work site.
Electric shock first aid
In case of electric shock, we should calmly and decisively take corresponding first-aid measures, and race against time to rescue the electrocuted person until the arrival of medical staff. On-site first aid for electric shock victims is a key in the rescue process. If the treatment is timely and accurate, it is possible to save people who have faked their deaths due to electric shock; On the contrary, it will inevitably bring irreparable consequences.
1. Unplug when someone gets an electric shock, turn off the air switch or pull down the knife.
2. Choose electrician tongs with good insulation or sharp tools with dry wooden handles to cut wires, or use dry wooden sticks, bamboo poles and hard plastic pipes. Pull the wire away from the electrocuted person.
3. Wrap your hands in several layers of dry clothes, stand on the dry board, pull the clothes of the person who gets an electric shock and get rid of the power supply.
When the person who gets an electric shock is out of power supply, he should be treated in time according to the specific situation, and a doctor should be invited to rescue him.
(1) The person who gets an electric shock is conscious and should be cared for and observed by special personnel; In case of slight coma or weak breathing, you can acupuncture or pinch Renzhong, Xuan Shi, Yongquan and other points and send them to the hospital for treatment.
(2) When the person who gets an electric shock has no breathing and heartbeat, mouth-to-mouth artificial respiration should be carried out immediately; When the electrocuted person has no heartbeat, chest compressions should be taken immediately for rescue. (It must be carried out by first-aid trained or experienced personnel, otherwise the rescue effect may not be achieved or even secondary injuries may be caused. ) The answer comes from