Although ABC dry powder fire extinguishing agent has a wide range of applicability, its use is prohibited or restricted in some specific occasions. Here are some occasions where ABC dry powder is prohibited:
1、Precision instruments and electronic equipment: ABC dry powder fire extinguishing agent will leave a large amount of white residue after extinguishing the fire, which may cause damage to precision instruments and electronic equipment, resulting in equipment failure or damage. Therefore, in these cases, other types of fire extinguishing agents, such as gas extinguishing agents, should be chosen.
2、Food and drug storage areas: Because ABC dry powder fire extinguishing agent may contain harmful chemicals to the human body, it should be prohibited in food and drug storage areas. In these areas, safer extinguishing methods should be used, such as the use of carbon dioxide extinguishing agents or water mist extinguishing systems.
3、High temperature and flammable and explosive environment: In high temperature environment, the performance of ABC dry powder fire extinguishing agent may be affected, resulting in poor fire extinguishing effect. At the same time, in flammable and explosive environments, the use of ABC dry powder fire extinguishing agent may cause more serious fire or explosion accidents. Therefore, in these cases, more suitable fire extinguishing methods or fire extinguishing agents should be used.
4、Confined space: The use of ABC dry powder fire extinguishing agent in a confined space may cause the concentration of dry powder to be too high, causing harm to human health. In these cases, you should choose to use other types of extinguishing agents or take other safety measures.
5、Special chemical fire: For some special chemical fire, ABC dry powder extinguishing agent may be ineffective or even aggravate the fire. For example, certain metal fires and active metal compound fires may require the use of specialized extinguishing agents. In these cases, a professional should be consulted to understand the correct method of extinguishing the fire.
In short, when selecting fire extinguishing agents, it is necessary to comprehensively consider the type of fire, environmental conditions and safety requirements, and choose the most suitable fire extinguishing tools to deal with different types of fires.
