What is the weighing inspection standard for carbon dioxide fire extinguishers?

Standard for weighing inspection of carbon dioxide fire extinguishers The carbon dioxide fire extinguishers shall be inspected once a month, and the leakage shall not exceed 5% or 50g of the rated weight. If the leakage exceeds the specified amount, it should be sent to a professional organization for maintenance, and then filled according to the specified filling amount. After each use or every five years, it should be sent to the maintenance unit for hydrostatic test.

Carbon dioxide fire extinguisher:

Carbon dioxide fire extinguishing agent is a kind of fire extinguishing agent with a history of 100 years, which is cheap and easy to obtain and prepare. Mainly rely on suffocation and local cooling to extinguish the fire. The density of carbon dioxide is high, which is about 1.5 times that of air.

At normal pressure, liquid carbon dioxide will vaporize immediately. Generally 1kg liquid carbon dioxide can produce about 0.5 cubic meters of gas. Therefore, when putting out a fire, carbon dioxide gas can exclude air and surround the surface of the combustion product or distribute in a relatively closed space, thus reducing the oxygen concentration around the combustible or in the protective space, causing suffocation and extinguishing the fire. In addition, when carbon dioxide is ejected from the storage container, it will quickly vaporize from the liquid into gas, and absorb some heat from the surrounding area to cool down.