How to check the quality of large fire extinguishers?

Fire extinguishers are one of the commonly used fire-fighting equipment in daily life and work, and it is very important to regularly check the status and availability of fire extinguishers. A qualified fire extinguisher can save lives and property in the event of a fire.
What are the 7 standards for inspecting fire extinguishers?
1, Location marking inspection
When inspecting fire extinguishers, the first step is to check if their location markings are clear and visible. Fire extinguishers should be placed in areas prone to fire and accompanied by clear signs such as red fire extinguisher patterns, text, or arrows, so that people can quickly locate the fire extinguisher in the event of a fire.

2, Visual inspection
Visual inspection refers to checking whether the appearance of a fire extinguisher is intact and undamaged. Firstly, check if there are cracks, deformations, or damages on the outer shell. If there are any problems, they should be replaced in a timely manner. Secondly, it is necessary to check whether the nozzle, pressure gauge, control valve and other components of the fire extinguisher are normal, and whether there are any looseness, corrosion or other abnormal conditions.

3, Label inspection
The main purpose of label inspection is to check whether the labels on the fire extinguisher are complete and clear. The label on the fire extinguisher should contain important information about the use method, expiration date, capacity, and other related information of the fire extinguisher. If the label is blurry or missing, it should be replaced or repaired in a timely manner.

4, Pressure check
Pressure inspection is an important basis for determining whether the internal pressure of a fire extinguisher is normal. Generally speaking, the pressure inside a fire extinguisher should be within the standard range. By observing the pressure gauge on the fire extinguisher, it can be determined whether the pressure of the fire extinguisher is normal. If the pressure is too high or too low, corresponding repairs or replacements should be carried out.

5, Sealing inspection
Sealing inspection is a crucial step in checking the safety performance of fire extinguishers. The valves and nozzles of fire extinguishers should have good sealing. During the inspection process, wet hands can be used for sealing inspection. If it is found that the wet hands can stick to the valve or nozzle, it indicates that the sealing performance of the fire extinguisher is faulty and needs to be repaired or replaced.

6, Use inspection
Usage inspection refers to checking whether the use of fire extinguishers is correct. Fire extinguishers are generally divided into various types such as dry powder fire extinguishers, carbon dioxide fire extinguishers, etc. The usage methods of different types of fire extinguishers are slightly different. During the inspection process, it is necessary to check whether the instructions for using the fire extinguisher are clear, whether the operation is simple, and whether the trigger and spraying range of the fire extinguisher are normal.

7, Fire extinguishing effect inspection
Fire extinguishing effectiveness inspection is an evaluation of the effectiveness of a fire extinguisher based on its spraying and extinguishing of the fire source. During the inspection process, a spraying test can be conducted to observe whether the spraying range and spraying time of the fire extinguisher meet the requirements. At the same time, fire extinguishers can also be used to conduct fire suppression tests on simulated fire sources to verify their effectiveness in extinguishing fires.