Fire extinguisher is an important fire-fighting equipment for putting out a fire at the beginning. It is portable and flexible. You can master its operation and use method after a little training. You can carry it or push it to the fire point to put out the fire in time. It is an ideal first-line fire-fighting equipment in the process of fire fighting. What are the problems with such an important fire extinguisher? Here is a brief summary of common problems with fire extinguishers. Let's get to know them.

1、 Improper type of fire extinguisher

Some units and individuals are not very clear about the fire hazard level of their own units and the fire types of combustibles, resulting in unreasonable types of fire extinguishers, which often delays the time to extinguish the fire. For example, Class A fire places are equipped with Class BC dry powder fire extinguishers, and places with light metal potassium, sodium and other combustibles are equipped with CO2 fire extinguishers, which not only can not play a role in extinguishing fire, but also make the fire bigger and bigger.

2、 The training of the unit on the use of fire extinguishers by employees is not in place

The personnel in some places do not know the fire extinguishing performance of the fire extinguisher and will not use it. Although the initial fire was found in time, the small fire was not controlled because the employees did not use the fire extinguisher correctly.

3、 Measures for maintenance and management of fire extinguishers are not implemented

Many units and individuals mistakenly believe that the fire extinguisher is a one-time configuration for lifelong use, so there is no special person to manage and maintain it, resulting in serious contamination of many configured fire extinguishers, insufficient gas storage pressure, failure of fire extinguishing agent, tank corrosion, aging and damage of the spray hose, or due to human misuse, resulting in loosening of the connection of the pressure gauge and head, plugging and deformation of the nozzle, etc. When the fire is in urgent need of use, not only can the fire be extinguished, but even because the fire extinguisher is a pressure vessel after all, there may be fire extinguisher explosion accidents.

4、 What are the types of water-based fire extinguishers

There are three types of water-based fire extinguishers: water-based foam fire extinguisher MPZ, water-based water mist fire extinguisher MSWZ, water-based water mist fire extinguisher MQS. However, only water-based water mist fire extinguishers are safe and environmentally friendly, which can put out fires caused by live equipment. They are suitable for families and can be sprayed on people.

5、 Principle of water-based fire extinguisher

After spraying, water-based (water mist) fire extinguishers will become water mist, instantly vaporize a large amount of heat in the fire field, rapidly reduce the temperature of the fire field, inhibit thermal radiation, and quickly form a layer of water film on the surface of combustibles to isolate oxygen, cool down, and isolate. At the same time, they will participate in fire extinguishing, so as to achieve the goal of rapid fire extinguishing. Extinguishing agent can penetrate Class A fire, such as wood, cloth, etc. Extinguishing agent can penetrate the interior of combustibles. Even if the fire is large and cannot be completely extinguished, the part where the agent is sprayed can effectively block the fire source and control the spread speed of the fire; It can isolate Class B fires, such as gasoline and volatile chemical liquids. The agent can form a water film on its surface for a long time. Even if the water film is damaged by external factors, its unique fluidity can quickly heal, causing flame asphyxiation. Therefore, water-based (water mist) fire extinguishers have the flame retardancy that other fire extinguishers cannot match. It is not affected by indoor and outdoor environment, and the fire extinguishing agent can maximize the effect on the surface of combustor. It is widely used in oil fields, oil depots, ships, factories, shops and other places. It is a necessary fire-fighting equipment to prevent fire and protect people's lives and property. It has the advantages of simple operation, high fire extinguishing efficiency, no need to invert when using, long validity period, anti reburning, dual fire extinguishing, etc. It can extinguish the initial fire of combustible solids and liquids, and electrical fires less than 36 kV. It is a necessary fire-fighting product for the development, processing, storage and transportation of wood, bamboo, fabric, paper and oil materials.

6、 Scrap life of water-based extinguisher cylinder

The fire extinguishing agent of water-based fire extinguisher has obvious corrosion on the fire extinguisher cylinder, and its hydraulic test cycle and maintenance period are relatively short. The first maintenance shall be carried out 3 years after the expiration of the factory, and the maintenance shall be carried out every 1 year thereafter, but the total number of maintenance shall not exceed 3 times. That is, 3+1+1=5. The next year after 5 years, the scrapping period of water-based extinguishers is determined to be 6 years. Note: The steel seal at the bottom of each fire extinguisher cylinder is the production date rather than the scrapping period.