Recently, the video of the above voice has aroused tiktok. Some netizens sent a private message to brother fireman directly. Is the content on the video true? Is it necessary to replace the dry powder fire extinguisher at home with water-based fire extinguisher so as to be safe?
To this end, the fire brother did an experiment, let's see, water-based fire extinguisher and dry powder fire extinguisher in the end which is easy to use!
Experiments show that, under the same conditions, dry powder fire extinguisher and water-based fire extinguisher have the same effect, which is not as exaggerated as the online video shows. So for home use, is it water-based fire extinguisher or dry powder fire extinguisher? Today, let's talk about the precautions of choosing fire extinguisher at home.
01
What are the common types of family fire
Everything pays attention to the right medicine, so let's first understand the common causes of residential fire. According to the statistics of the fire department, 52% of the residential fires in 2019 were caused by electrical reasons, especially the fires caused by various household appliances, electric vehicles and electrical lines. Therefore, the fire caused by electricity is the key object of prevention and control in our home life (class E fire). In addition, the causes of family fire are gas fire (Class C fire), smoking (class a fire), cooking fire (Class F fire), and then ignite our curtains and furniture (class a fire).
Therefore, when we buy fire extinguisher at home, the first thing we should pay attention to is the instructions on the bottle, and the type of fire extinguishing will be marked in the eye-catching position.
Judging from the types of fire fighting, dry powder fire extinguisher can basically cover the whole scene in home fire. Therefore, in ordinary families, if you don't want to spend too much time, you can choose dry powder fire extinguisher. Of course, the dry powder fire extinguisher also has some disadvantages, such as poor re ignition resistance, damage to electrical appliances and trouble in later cleaning. Of course, it's all on fire. Who cares if it's damaged or polluted.
02
There are many kinds of water-based fire extinguishers
There are many types of water based fire extinguishers, which are mainly divided into two types. One is water based foam extinguisher, which is suitable for fighting the initial stage of AB fire. One is water based spray fire extinguisher, which is applicable to ABEF type fire and can extinguish electric fires. When you buy, you must see the product parameters clearly. When you use it at home, you must choose the water-based water mist fire extinguisher that can extinguish class E fire, otherwise it may cause electric shock!
When the water-based water mist fire extinguisher is used, a thin water film can be formed and extended on the surface of the combustibles to isolate the combustibles from the air and realize the fire extinguishing. Through the atomizing nozzle, water mist is sprayed to diffuse the fire and evaporate the heat, so as to quickly reduce the temperature of the fire and reduce the oxygen concentration in the air of the combustion area, so as to prevent re combustion. Because the spray is water mist, not water flow, the distance between water droplets of water mist is relatively large, and there is air between water droplets. Under the voltage of less than 3KV, the air can be regarded as a reliable insulator, so it can extinguish the live fire.
03
Dry powder or water-based, which is more suitable for home use?
To sum up, we can see that dry powder fire extinguisher can basically cover the whole scene in home fire. Therefore, in ordinary families, if you don't want to spend too much time, you can put all dry powder fire extinguishers. Of course, the dry powder fire extinguisher also has some disadvantages, such as poor re ignition resistance, damage to electrical appliances and trouble in later cleaning.
I'm really afraid that the pollution is not easy to take care of. I can learn from the high-speed railway. In the living room and other important places, water-based fire extinguisher and dry powder fire extinguisher are equipped at the same time. When the fire comes, first put out the fire with water base. If the fire goes out, it's best. There's no pollution. If you can't put it out in 20 seconds, apply dry powder. Of course, this is an ideal state. In a critical moment, there will be no time to think about what kind of fire extinguisher to use.
Class C fire (gas and natural gas fire) and class F fire (cooking fire) appear in the kitchen. Water based fire extinguisher can only cope with class F fire, but can not extinguish class C fire. Therefore, dry powder fire extinguisher is more safe near the kitchen to ensure no mistakes.
In order to take care of the elderly and children, it is not suitable for families to install fire extinguishers with too large capacity. Equipped with a number of small capacity fire extinguishers, placed in different locations of the home is very good.
04
How to purchase and use fire extinguisher correctly
We all know that we should keep fire extinguishers at home, but the problem of where to buy fire extinguishers puzzles many people. Fire brother can't tell you Amway specific brand, but can tell you: all units with fire extinguisher sales qualification can buy. Pay attention to audit the qualification of relevant units when purchasing fire extinguisher online. All those who buy and sell are liars!
When choosing a fire extinguisher, the first thing to observe is whether the bottle body, product information and instructions are complete, whether the pressure gauge, stainless steel nozzle and safety protection safety bolt are complete and undamaged, and whether the bottle body is damaged.
Secondly, anti-counterfeiting inspection is very important, no anti-counterfeiting label of the fire extinguisher, please do not buy! Then we need to check the fire certification code. There are two certification codes at the bottle body and pendant, and these two codes must be consistent. Second, you can log on the China fire protection product information network and enter the certification code for verification.
The fire extinguisher is not a vase, it is not an ornament, it is not put where you want. Many people know that the fire extinguisher should be placed in a conspicuous place and easy to use, so how to use the fire extinguisher correctly? We should remember the four key words of promotion!
Finally, I want to talk about the maintenance and inspection of fire extinguisher. Take the most common dry powder fire extinguisher as an example. A lot of people just look at the pressure gauge, the pressure gauge pointer in the green range is OK, the rest is no matter. In fact, the inspection of a fire extinguisher has many contents, and the pressure gauge is only one of them.
01
Check the validity of the fire extinguisher
The dry powder fire extinguisher has a validity period, because the dry powder in it will be invalid if it is put too long. The validity period of a new purchase is generally 5 years, and the production date is printed on the bottle. Assuming that the bottle is produced in May 2019, the validity period can reach may 2024. After 5 years, you can take the fire extinguisher and refill it. After the refilling, you will stick a certificate on the bottle body with the date of filling. The validity period after filling is generally 1 year or 2 years. If there is no explanation, it is 1 year.
02
Check the pressure gauge
This is basically understood by everyone. Green normal; red insufficient pressure, need to replace; yellow overpressure, can be used, but there is a risk of explosion.
03
Check the appearance of fire extinguisher
Check the bottle body, pressure handle, safety pin and nozzle for rust, aging and damage. The factory requires that the fire-fighting facilities be inspected every month. If the fire extinguisher is used in the family, it doesn't need to be so strict, but it still needs to be inspected regularly.
04
Fire extinguisher maintenance
It should be placed in a good, dry and ventilated place. It is not allowed to be exposed to the sun and rain. It is strictly forbidden to store in high temperature environment. These conditions are easy to meet at home. Some families often mop the floor. The bottom of the fire extinguisher is easy to rust when it is stained with water. For the convenience of maintenance, it can be packed with boxes or bases and marked. Of course, there are special boxes.
05
Fire extinguisher nozzle maintenance
Another thing to note is that most of the fire extinguishers have nozzles. Some people are smart enough to wind up the pipes, but the curled parts are easy to age and crack, and the service life of the fire extinguisher is greatly reduced. Therefore, when storing the fire extinguisher in daily life, do not curl the nozzle and place it naturally.
