General safety rules for the hottest electrical op

General safety rules for electrical operation

1. Conditions that electricians must have

① there are no diseases that hinder electrical work after doctors' examination, such as hypertension, deaf mute, color blindness, limb disability, limited function, etc

② must be trained in electrical safety technology, pass the examination and take the post with special operation certificate. Apprentices and other non licensed electricians can only operate under the supervision and guidance of licensed electricians

③ understand the performance of power supply lines and electrical equipment in the post area

④ be familiar with first aid methods for electric shock and emergency treatment measures for accidents

2. Electricians must correctly wear qualified labor protection articles, such as insulating shoes and work clothes. If necessary, wear safety helmet, safety belt and other protective articles

3. High and low voltage basic and auxiliary insulation safety appliances and general protective appliances must be used and kept correctly. Before use, the appearance and test date must be carefully checked, and necessary performance inspection must be done. Damaged and invalid ones shall be prohibited. For different voltage levels, working environment and working objects, tools with matching parameters and performance shall be selected and stored according to the specified requirements after use. All safety appliances and protective appliances shall not be used as other tools

4. When working on power supply and distribution lines and equipment, personnel with certificates and experience must be set to supervise. With the improvement of people's awareness of environmental protection and building fire safety, the supervisor must not engage in operations or things unrelated to supervision

5. Any electrical circuit and equipment shall be deemed to be energized and shall not be touched before being verified by the person. When contact operation is required, cut off the power supply at this place and confirm with electricity (discharge capacitive facilities) before contact operation. For the parts connected with the power supply and distribution network, in addition to power failure, discharge and power inspection, the temporary grounding wire should also be hung, and the switch should be locked to prevent sudden calls after power failure

6. The knife switch on the power distribution board is forbidden to pull and close with load, and the switch of electric equipment must be disconnected before operation. When manually closing (pulling) the knife switch, push (pull) it in place at one time. When it is necessary to open the knife switch on the loaded power distribution board to deal with the accident, insulating gloves and protective glasses should be worn, or other measures to prevent arc burns and electric shock should be taken

7. Please check whether the electronic computer is a structure and component change installed with copier gas facilities, which requires the permission and approval of the electrical technical director. Electricians shall not change the original structure, wiring mode and component parameters of electrical facilities by themselves

8. For the connectors of various electrical wiring, it is necessary to ensure that the conduction contact area is not less than the cross-sectional area of the conductor. The wiring shall be firmly crimped or rolled with tools, and it is not allowed to twist it by hand. The connector shall not be loose to prevent the electrified body from touching the screen protector

9. When using a ladder, check whether the ladder is in good condition before using it. The steps shall be free of cracks and damage, and anti-skid measures shall be taken. The angle between the ladder and the ground should be 75 °, and the height should be tied firmly. When standing on a herringbone ladder for operation, the hook shall be hung and supported by a specially assigned person. Wooden ladders made of nails are not allowed

10. Electricians must skillfully master the correct use methods and safety precautions of multimeter, clamp ammeter and megger, and carefully check, reasonably select and carefully adjust them before use. During operation, pay attention not to damage the instrument, but also to ensure personal safety. Keep it properly after use

11. Observe the operation requirements of electric tools when using electric tools. It is strictly prohibited to screw the shell grounding and working zero line of electric tools together and insert them into the socket. Single-phase three eye (hole), three-phase four eye (hole) sockets and three core or four core rubber sheathed cables must be used. When using class I hand-held electric tools, leakage protection devices and isolation transformers should be equipped, and operators should wear insulating gloves

12. When using the vice, the vice must be firmly installed on the bench worker's case, the workpiece must be clamped tightly, and the use stroke of the vice mouth shall not exceed two-thirds of its maximum stroke

13. Suitable wire stripping jaws must be selected during wiring to prevent damage to the wire core. The length of wires should be appropriate, and there should be no intermediate joints

14. When using a blowtorch, the oil volume shall not exceed three fourths of the volume. It is forbidden to inject gasoline into the blowtorch using kerosene or alcohol. The air shall be pumped properly, and the blowtorch with oil and air leakage shall not be used. When using blowtorch at high-voltage equipment, keep a safe distance between the flame and the live part; The voltage of 10kV and below shall not be less than 1.5m, and the voltage of 10kV and above shall not be less than 3m. It is forbidden to use blowtorch near oil filling equipment and inflammables

15. Correctly use common fire extinguishing equipment for electrical fires. The extinguishing agents of carbon dioxide, 1211 and dry powder fire extinguishers are non-conductive and can be used for live fire extinguishing. When extinguishing fire, keep a certain distance between the fire extinguisher body, nozzle and human body and the charged body; When the voltage is 10kV or below, the researchers of high-capacity hydrogen storage materials, solid oxide fuel cell materials, proton exchange membrane fuel cells and protective materials shall not be less than 0.4m; The voltage of 35kV and above shall not be less than 0.9m. When the use of carbon dioxide fire extinguishers is increasingly valued by countries all over the world, it is necessary to maintain good ventilation, 2 ~ 3M away from the fire extinguishing area, and pay attention to prevent dry ice from contacting the skin

16. For matters not covered in this procedure, please refer to the municipal operating procedures on electrical safety requirements