As the temperature rises
Power fans, air conditioning, etc. Began to be used extensively
It's also in
The frequency and frequency of electrical fires
Chief here reminds you
Learn to prevent fire. Get away from fire
What's an electrical fire
Electrical fire generally refers to thermal energy released as a result of failure of electrical circuits, electrical equipment, appliances and distribution equipment; energy released such as high temperature, arc, electric sparks and non-obstructive energy; and fire caused by thermal surfaces of electro-heat devices, incendiary or other combustible materials, under conditions of combustion, including those caused by lightning and static power. The main causes of the household electrical fires are the electrical circuits and the electrical appliances and appliances。
Characteristics and causes of electrical fires
1. Ageing and overloading of lines
With the arrival of high-temperature weather, electrical equipment such as air conditioners, refrigerators and electric fans has increased significantly, the ageing of lines and overloading, and power insulation skin damage has caused short-circuit fires。
Poor quality
Electrical equipment is not properly installed or operated, and electrical products are of poor quality。
This situation is prone to electrical accidents
3. Disgracement
Interrupted power lines in violation of safety regulations, or lack of knowledge of safe use of electricity, are also important causes of electrical fires。
4. Dispersion of heat
Electrical or electrical heat spreads poorly, high temperatures reduce insulation and short circuits or electric engines burn fire. Entering the summer is also a period of frequent car fires, which, in hot temperatures, can result in a small oversight of the production, transport and storage of chemical dangerous goods。
5. Equipment, electrical hair harvesting hot
Some electrical equipment, such as transformers, electric appliances, capacitors, conductors and connections, are operating at higher heat levels, causing fires。
6. High temperature and rapid spread
Hot weather tends to create strong convection weather, increasing the rate at which fires spread. In the summer, hot and hot heat, low precipitation, high evaporation, dry and dry, low-burning spots, burning in the event of an open fire, spreading into adjacent buildings with a radioactive heat, creating a stereo or large fire。
How to prevent electrical fires
1. Improvement of short circuit and overload protection, installation of breakers and leak protections
2. Line-laying specifications, reliable connections and line paths that meet the requirements for use
3. Electrical equipment is intact, the equipment is reliablely connected to the power source and does not overload the electrical equipment
Installation of qualified electrical components and equipment
5. Periodic inspection of insulation performance, electrical element function and equipment condition, in particular the reliability of short circuit and overload protection。
What about the electrical fires
1. Cutting power
In the event of an electrical fire, if the power is not out of service at the site, the first step should be to find a way to cut the power, which is an important measure to prevent the expansion of the fire range and avoid electrical accidents. The following should be noted when cutting off power:
1 the power cut is a reliable insulation tool that must be used to prevent electrocution during operation。
The location of the power cut should be selected appropriately so as not to affect fire suppression。
3 when cutting the conductor, the non-similar guide shall be cut at different points to avoid artificial short circuits。
If the conductor is carrying loads, the load should be eliminated as far as possible before the power is cut。
2. Prevention of electrocution
In order to prevent electrocution during fire suppression, care should be taken to maintain the necessary safety distance from the electric body. Water and foam extinguishers should not be used to extinguish fires. Dry sand and carbon dioxide, dry powder extinguishers should be used to extinguish fires. Preventing direct contact with or excessive proximity to electrical components, such as body, hand, foot, or fire extinguishers, which are used, causes electrical accidents. Insulated rubber gloves should also be used to extinguish the fire。
3. Fire suppression of fuel filling equipment
The following should be noted when fighting fire within the fuel-filled equipment:
When an external fire occurs in a recharge unit, fire extinguishers can be used such as carbon dioxide, 1211, dry powder, etc.; if the fire is larger, the power should be cut immediately and water used to extinguish the fire。
In the event of a fire within the recharge equipment, the power source shall be cut immediately and the fire shall be extinguished by the use of spray guns and, if necessary, by sand, dirt, etc. Outbreaks of oil fires can be extinguished with foam extinguishers。
In case of a fire of rotary engines, such as generators, electric motors, in order to prevent the deformation of axes and bearings, they can be slowly rotated, extinguished with spray guns and helped to cool them. The fire can also be extinguished by co2, 1211, steam, etc。
