How should carbon dioxide and nitrogen be stored and used after being purchased? Should it be classified as Category B?

Carbon dioxide and nitrogen are generally stored in high-pressure gas cylinders. It should be stored in a cool, dry, and well-ventilated place, away from direct sunlight and rain. Also, avoid collisions and drops to prevent damage to the high-pressure gas cylinder. When in use, it is essential to follow safety regulations; do not remove the gas directly from the cylinder – the gas pressure must be reduced using pressure-reducing equipment before it can be used. During use, ensure that the area is well-ventilated, as the gases may displace the oxygen in the air and cause suffocation. In China, carbon dioxide and nitrogen are colorless and odorless inorganic non-metallic gases. According to the Regulations on the Safety Management of Hazardous Chemicals, they are classified as Category 2 flammable liquids and can be treated as such. The storage of Class B hazardous chemicals must comply with the requirements of the \"Regulations on the Safety Management of Hazardous Chemicals\" and the \"Technical Standards for the Safe Storage of Hazardous Chemicals\". This includes having adequate fire-fighting facilities and lightning protection systems in the storage areas, maintaining appropriate distances between storage facilities and other structures, and prohibiting smoking, among other regulations. .

They are all cylinders filled with gas, and there are special requirements for storing them in cylinder rooms as well as for using them on-site.

Neither of these is a flammable gas, so how could they be classified as Category B?

“According to the Regulations on the Safety Management of Hazardous Chemicals, they are classified as Category 2 flammable liquids and can be treated as Category B substances. ”Did you write that sentence yourself or did you take it from the original text? It’s nonsense, right?

In Section 3.1 Classification of fire hazard in the Code for Fire Protection Design of Buildings GB50016-2014 (2018 edition), neither carbon dioxide nor nitrogen is classified as Category B. Storage is not required in accordance with Class B regulations. Others shall be stored in accordance with the requirements for gas cylinder use.