According to the relevant national standards, the mandatory retirement period of dry powder fire extinguishers is 10 year, which is the 8-year validity period of the fire extinguisher cylinder; On the other hand, the extinguishing agent of dry powder fire extinguishers also has a validity period. Generally speaking, the validity period of the extinguishing agent is 1 to 2 years. Usually, when the fire extinguisher is reloaded, the manufacturer will affix the validity period of the extinguishing agent. That is to say, in most cases, dry powder fire extinguishers need to be reloaded every year within the validity period of 10 years. These two types of validity periods refer to the calculation of the fire extinguisher from the factory date. Scrapping life of dry powder fire extinguishers The fire extinguishers must be scrapped if they reach the following life from the date of manufacture:

1. Portable dry powder fire extinguisher (gas cylinder type) is 8 years.

2. The portable pressure storage type dry powder fire extinguisher is 10 year.

3. The cart type dry powder fire extinguisher (gas cylinder type) is 10 year.

4. The trolley pressure storage type dry powder fire extinguisher is 12 years.

The storage device of dry powder fire extinguishing system should be composed of dry powder storage container, container valve, safety pressure relief device, driving gas storage bottle, bottle head valve, collecting pipe, pressure reducing valve, pressure alarm and control device, etc. Pipe, pressure reducing valve, pressure alarm and control device.

Dry powder fire extinguisher mainly uses liquid carbon dioxide or nitrogen as power to spray dry powder in the extinguisher to put out the fire. There are two common types of dry powder fire extinguishers, ABC and BC. When equipped with fire extinguishers, the corresponding types of dry powder fire extinguishers should be selected according to the different burning conditions of combustible materials in the application site.

Dry powder often has residues after fire extinguishing, so attention should be paid to prevent damage to precision instruments; Check the gas cylinder pressure of dry powder fire extinguisher (vehicle) frequently, and replenish or replace it in time if the pressure drops; Dry powder must always be kept dry to prevent caking due to moisture. When using portable (cart-type) dry powder fire extinguisher, it is necessary to turn it upside down several times to make the dry powder loose in advance and easy to spray, so as to achieve the purpose of fire extinguishing.

legal ground

Article 5 of the Fire Protection Law All units and individuals have the obligation to maintain fire safety, protect fire control facilities, prevent fires and report fire accidents. All units and adults have the obligation to participate in organized fire fighting work.