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General knowledge of fire prevention and electricity safety in construction sites
1. Common sense of building electricity safety

At least 0.27 yuan/day, members of Baidu Library can open it, and the complete content can be found in the Library > Original Publisher: My village only has electricity 1, consciously abide by the rules and regulations on safe electricity use, apply for electricity use, find an electrician to install and repair it, and do not connect the electrical equipment privately, and install a leakage protector to use electricity.

2. Don't throw things at power lines and transformers, don't shoot or set off fireworks near power lines, and don't quarry, repair houses, erect derricks or cut down trees. 3. Hooked wires, broken wires, ground climbing wires and wires with unqualified insulation cannot be used to connect electricity.

4. Don't mix telephone lines, broadcast lines and power lines and enter the room through the same hole. 5, can't climb, across the fence, fence of power facilities.

6, the electric light line should not be too long, to fix the lamp holder, don't pull the lamp holder, as a flashlight. 7. You can't set up a private power grid for theft prevention, fishing, hunting and rat catching.

8. Do not build houses, drill wells, pile firewood or plant trees under power lines. 9. The wire for drying clothes should be far away from the wire, and it is even more impossible to dry clothes on the wire.

This vine can't wind wires. 10, educate children not to climb transformers, poles, cables or fly kites under wires.

1 1, don't put flammable items near the light bulb switch and knife box. If you find an odor, you should immediately open the household knife and find out the reason.

In case of fire, cut off the power supply immediately. In case of fire, if it is too late to cut off the power supply, don't splash water to put out the fire. Cover the fire with earth and sand. 12, don't tie animals to poles, or shake poles with strong impact, and don't dig holes near poles to get soil.

13. The wires crossing the roof should be kept at a distance of more than 2.5m from the roof. 14, select qualified residual current action protector (leakage protector).

15. When replacing the light bulb, stand on an insulating material, such as a dry wooden stool. Please disconnect the power supply when wiping the light bulb or other electrical appliances. 16, when household appliances are abnormal, disconnect the power supply and then do maintenance.

Electrical equipment newly purchased or stopped for a long time should be checked for insulation before use. 17, temporary electricity, should go through the corresponding formalities, installed by an electrician.

2. Safety knowledge of safe electricity use

First, electricity is safe.

1. It is everyone's responsibility to use electricity safely and ensure the safety of personal equipment.

2. If you need to apply for electricity, find an electrician to install and maintain it: it is strictly forbidden to pull and connect electrical equipment without permission.

3, temporary electricity, to the local power supply station to apply for electricity; The installation of electrical equipment shall conform to the requirements of the regulations, and it can only be electrified after passing the acceptance; Power facilities should be watched by special personnel when using electricity, and should be dismantled in time after use. Long-term electrification is not allowed.

4. It is strictly forbidden to change the operation mode of low-voltage system without authorization, and use low-voltage lines to transmit broadcast or communication signals. It is strictly forbidden to use electricity in one phase and one place.

5. It is forbidden to set up a private power grid, use electricity to guard against theft, catch rats, hunt and fish.

6, it is forbidden to use TV antennas, telephone lines and other non-standard conductors instead of wires.

7. Hooks, broken wires, ground climbing wires and wires with unqualified insulation are strictly prohibited.

8. It is forbidden to climb or cross the fence or fence of power facilities.

9. It is forbidden to throw things at power lines, transformers and other power facilities.

10, blasting and quarrying are not allowed near power facilities such as power lines and power equipment.

1 1, it is forbidden to dig a hole or borrow soil near the pole; It is not allowed to tie animals to poles; Don't break the stay wire to prevent the rod from breaking.

12, clothes are not allowed to be hung on the power cord, and the horizontal distance between clothes (rope) and the power cord should be kept above1.25m..

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

14. It is forbidden to build houses, drill wells, play fields, pile firewood, plant trees and bamboo under high-voltage power lines.

15. When erecting a derrick, repairing houses and cutting down trees near power lines and other power facilities, preventive measures must be taken and approved by the power department.

16, acting, showing movies, * * * and other activities are far away from power equipment such as overhead power lines to prevent electric shock from hurting people.

17, educate children not to play with electrical equipment, climb poles, shake cables, climb substations, shoot birds near power lines, fly kites and engage in other behaviors that damage electrical equipment.

18. When the power cord is found to be disconnected, don't go near the landing site, let alone touch the power cord, and stay away from the conductor grounding point for 8 meters; And guard the scene, immediately find an electrician to deal with or report the power supply.

19. If someone gets an electric shock, don't pull the * * * part of the electrocuted person with your bare hands. Disconnect the power supply as soon as possible and carry out rescue according to the emergency rescue law.

20. Low-voltage power lines that must cross the room should keep a vertical distance of 2.5m or more from the roof; The horizontal distance from the building should be1.25m or more.

2 1. Stay away from power lines when erecting TV antennas; The minimum distance between the antenna mast and the nearest high and low voltage power lines shall be greater than 3.0m, and the clear distance between the antenna mast and the above power lines shall be greater than 3.0m.. ..

22. It is forbidden to connect the power supply randomly, and use the lamp holder with socket for household electricity.

23. Users should cut off the power supply before working when repairing electrical appliances or connecting indoor wires.

24. Users are not allowed to touch the equipment when they find that the loudspeaker is making a strange call. Turn off the broadcast power switch first, and then find an electrician to deal with it.

25, wipe the lamp holder, switch, electrical appliances, to disconnect the power switch; When replacing the light bulb, stand on an insulating material, such as a dry wooden bench.

26, found that power lines, equipment failure. Such as line disconnection, pole reversal, lightning arrester breakdown, transformer burning, etc., should be reported to the local power supply station or county dispatching room in time so as to repair and restore power supply as soon as possible.

Second, how to prevent electric shock in daily life

1, consciously abide by the safety rules and regulations.

2, the power cord and electrical equipment insulation must be good, lamp holder, socket, switch and other live parts shall not be exposed, to prevent the human body from touching live parts.

3. Don't touch or operate electrical equipment with wet hands, and don't wipe live electrical appliances with wet cloth.

4. Educate children not to play with electrical appliances.

5. Don't cut the wires that fall to the ground, and don't get close to the wires that fall to the ground.

6. Before electrical work, it is necessary to verify that there is no electricity.

7, can't touch the screw of the lamp holder, can't pull the bare ground wire by hand, don't play with charged equipment, can't pull the plug directly.

Third, how to deal with electric shock accidents in an emergency.

1, when someone is found to get an electric shock, first make the person who gets an electric shock quickly get rid of the power supply. Don't pull the person who gets an electric shock by hand, quickly pull down the switch and disconnect the power supply, or connect the wire with a dry stick or bamboo pole, or cut the wire with a tool with an insulating handle.

2. Quickly move the electric shock victim from the power supply to a ventilated and dry place to lie on his back, loosen his coat and belt, observe whether the electric shock victim breathes and touch the carotid artery for pulsation.

3. Use correct artificial respiration and chest compressions for on-site first aid. At the same time, call 120 emergency number in time, and call medical personnel to the scene for treatment as soon as possible. Before the medical personnel arrive, the on-site rescuers should not give up on-site rescue. It is forbidden to vaccinate people who get an electric shock.

3. What are the general fire protection requirements for power consumption at the construction site in common sense of power engineering?

The general fire protection requirements for power consumption on the construction site are: (1) Pay attention to ventilation and heat dissipation of electrical equipment.

Especially in hot summer, some electrical equipment, such as transformers and capacitors, will generate a lot of heat during operation. If the heat dissipation is not good, it will lead to high temperature and fire. (2) Prevent short circuit.

Line erection and equipment installation should be carried out according to the specifications, and regular inspection and maintenance. (3) control overload.

It is forbidden to pull and connect the power supply indiscriminately. (4) Control the generation of electric spark and arc.

Explosion-proof electrical equipment must be used in flammable and explosive areas. (5) The electrical connection parts should be kept in close contact.

(6) It is forbidden for non-electrical operators to engage in electrical operations. (7) Replace aging insulated lines in time.

(8) Deal with electrical equipment failure in time to prevent fire caused by accident sparks or overheating. (9) On-site electric heating equipment must be qualified products of professional manufacturers and can only be used after being approved by relevant departments. It is forbidden to build electric heating equipment privately or arbitrarily.

(10) In warehouses, especially warehouses with inflammable and explosive materials, the laying of power lines and the setting of electrical equipment must meet the relevant fire prevention requirements. The remaining cable sheath of $( 1 1) thermal control wiring must be cleaned in time.

4. The construction site temporary electricity safety points

Temporary power consumption:

1. 1, if there are five or more temporary power consumption equipment, or the total capacity of the equipment is above 50KW, the temporary power consumption organization design shall be prepared; When the temporary electricity consumption is less than 5 sets or the total capacity of the equipment is less than 50KW, measures for safe electricity consumption and electrical fire prevention should be taken.

1.2. Temporary power consumption on the construction site must be compiled by electrical engineering technicians, and the construction organization design or scheme can be implemented only after it is reviewed by the technical director and approved by the project director.

1.3. Electricians on the construction site must hold relevant certificates and participate in continuing education and safety technical training according to relevant regulations.

1.4. Safety technical files must be established for temporary electricity utilization on the construction site, including: the construction organization design scheme for temporary electricity utilization; Technical disclosure materials; Temporary electricity inspection and acceptance form; Inspection and debugging records of electrical equipment; Grounding resistance test record; Regularly check the review records; Electrical maintenance records, etc.

2. External protection

2. 1 If the transformer is within the revolving radius of the tower crane or the outer edge of scaffolding and tic-tac-toe frame is less than the minimum safe distance [6m], external protective measures must be formulated, guardrails, fences or protective nets should be set up, and warning signs should be hung at the site.

2.2, the erection of fences, fences or protective nets and other protective measures, should be in the construction site after the erection of high-voltage lines, installation of transformers, before sending, it is forbidden to live work. Insulating materials must be selected for external protection, and conductive materials are strictly prohibited.

3. Laying of temporary power lines

3. 1, the power supply line adopts concrete poles, which are erected with five blocks (the buried depth of concrete poles is110+0.6m) or buried through pipes. Overhead lines should be arranged in the order of yellow, green, red (phase line), blue (working zero line) and yellow/green line (protection zero line) from top to bottom. In order to meet the requirements of mechanical strength, the cross section of insulated copper wire of overhead line should not be less than 10mm2, the cross section of zero line of single-phase line is the same as that of phase line, and the cross sections of working zero line and protection zero line of three-phase five-wire system should not be less than 50% of that of phase line.

3.2. TN-S neutral protection system, namely "three-phase five-wire system", must be adopted for temporary power consumption on the construction site. The working zero line (N line) should be separated from the protection zero line (PE line) and cannot be mixed. The "PE line" shall be led out from the working grounding line of the transformer or the working zero line of the main distribution room or the working zero line of the power supply side of the primary leakage protector.

3.3, protect the zero line in addition to the distribution room or distribution box must be repeated grounding, also must be repeated grounding in the middle and end of the distribution line. The grounding resistance value of each repeated grounding device protecting the zero line shall not be greater than10Ω.

4. Power supply and distribution equipment

4. 1, the construction site must be set up with a main power distribution room, which is made of brick walls, with reinforced concrete or other fireproof insulation materials poured at the top. The room should be dry, ventilated and at room temperature, with a fire resistance rating of not less than Grade III. The rated current of the disconnector in the main power distribution box must be less than that of RT0 melt installed by the power supply department. The panel of the main distribution box shall be equipped with voltmeter, switch and ammeter for monitoring three-phase voltage, with the upper end not less than 0.5m from the ceiling, the width of the front operation channel not less than 1.5m, and the width of the rear and side maintenance channels not less than1m.. The door of the power distribution room is opened and locked outward, and a sand box and an insulating fire extinguisher are set.

4.2. "Three-level power distribution and two-level protection" must be implemented for temporary power consumption on the construction site. After the power cord is connected to the electrical box, it passes through the isolating switch and then enters the leakage switch. The primary and tertiary power distribution must be equipped with leakage protection devices.

5. What is the knowledge of building fire safety?

1. The construction unit shall strictly abide by the laws, regulations and rules on fire control, implement the fire control policy of "putting prevention first and combining prevention with elimination", perform fire control safety duties and ensure fire control safety.

2. The key units of fire safety shall establish or determine the centralized management departments of fire control work, and determine full-time or * * * fire management personnel; Other units shall determine full-time or * * * fire management personnel, and may determine the centralized management functional department of fire control work.

3. The construction unit shall establish and improve various fire safety systems, including fire safety education and training; Fire inspection and inspection; Management of safety evacuation facilities; Fire (control room) on duty; Maintenance and management of fire fighting facilities and equipment; Rectification of fire hazards; Safety management of using fire and electricity; Flammable and explosive dangerous goods and fire and explosion prevention in places.

4. Organize the formulation of fire fighting and emergency evacuation plans in line with the actual situation of the unit, and organize employees to conduct escape and self-help drills and initial fire fighting at least once every six months.

5. Regularly maintain the fire-fighting facilities, fire-fighting equipment and fire safety signs of this unit to ensure that they are in good condition and effective.

6. Ensure that evacuation routes and safety exits are unblocked. Do not occupy the evacuation passage or set obstacles on the evacuation passage and exit, do not close the exit during construction and operation, and do not block the safety evacuation sign.

7. It is forbidden to use open flames in places where there is a danger of fire and explosion; If it is necessary to carry out open flame operations such as electricity and gas welding due to special circumstances, the hot work department and personnel shall go through the examination and approval procedures in strict accordance with the fire control management system of the unit, implement the on-site guardian, allocate sufficient fire-fighting equipment, and remove flammable and combustible substances in the hot work area.

6. What is the content of the new specification for safe electricity use in construction sites?

The contents of the new code for the safe use of electricity on construction sites;

The 220/380V three-phase four-wire low-voltage power system with the neutral point of the special power supply directly grounded for the temporary power utilization project on the construction site must meet the following requirements:

1 adopt a three-level distribution system;

2 TN-S neutral point protection system is adopted;

3. Adopt secondary leakage protection system.

Temporary power consumption management

Organization design of temporary electricity consumption

1 If there are five or more temporary electrical equipment or the total capacity of the equipment is 50kW or above at the construction site, the electrical organization design shall be prepared.

2. When there are less than 5 temporary electrical equipment on the construction site and the total capacity of the equipment is less than 50kW, measures for safe electricity use and electrical fire prevention shall be formulated.

3 When designing and changing the temporary power consumption organization, the procedure of "preparation, review and approval" must be implemented, which is organized by electrical engineers and technicians, reviewed by relevant departments and approved by the technical director of the enterprise as a legal person. Relevant drawings should be supplemented when changing the design of power consumption organization.

4. The temporary power utilization project must be jointly accepted by the preparation, examination and approval departments and users, and can be put into use only after it is qualified.

Electricians and power users

Electricians must pass the examination according to the current national standards and hold relevant certificates; Other users of electricity must go through relevant safety education and training and technical disclosure, and can only take up their posts after passing the examination.

Safety technical archives

Temporary power utilization projects shall be inspected regularly according to partial projects, and potential safety hazards shall be handled in time, and re-inspection and acceptance procedures shall be performed.

Protection of external power cord and electrical equipment

External power line protection

1 The project under construction shall not be constructed directly under the overhead power line, and the work shed, living facilities or components, shelves, materials and other sundries shall not be erected.

2 The minimum safe operation distance between the periphery of the project under construction (including scaffolding) and the sideline of the overhead power line shall comply with the regulations.

3. It is forbidden for cranes to cross overhead wires without protective facilities. When hoisting near the power overhead line, the minimum safe distance between any part of the crane or the edge of the hoisted object and the sideline of the overhead line with maximum deflection shall comply with the regulations.

4 When the motor vehicle lane crosses the power overhead line on the construction site, the minimum vertical distance between the lowest point of the overhead line and the road surface shall comply with the regulations.

7. What measures are there for the safe use of electricity on the construction site?

2. 1 Measures for safe electricity utilization at the construction site. Temporary electricity consumption for construction shall be arranged overhead according to the provisions of the general plan. The poles shall be dry logs or cement poles with angle iron cross arms and insulators.

2.2, the construction of electricity management, must be held by an electrician who has obtained a license, must be carried out in strict accordance with the operating procedures, no special reasons and protective measures, are not allowed to be charged with work, the correct use of personal labor insurance supplies. 2.3, all mechanical equipment in this project should adopt grounding protection and site repeated grounding protection.

2.4, distribution box should be standard box, hanging height of 1.4M box before and after 1M range are not allowed to be placed, the door lock should be intact and flexible, and repeat protection and grounding according to regulations. 2.5, the distance of the mobile electric box is not more than 30M, do just one brake a protection.