Class A foam fire extinguishing agent is a new type of fire safety protection product, previous research mainly focused on the qualitative and semi-quantitative evaluation of fire extinguishing performance, and the quantitative evaluation of Class A foam fire extinguishing agent was carried out through the standard stake fire test. The effects of different ratio and foaming ratio on fire extinguishing performance were studied and compared with ordinary water.

Class A foam fire extinguishing agent can be divided into the following two categories according to the performance of the product:

The first category is Class A foam extinguishing agent for Class A fire prevention and thermal insulation protection, code-named MJAP. The second type of Class A foam is suitable for Class A fire protection, water-insoluble liquid fuel fire and insulation protection of Class A foam extinguishing agent, code-named MJABP.

The results show that under the condition of the same water supply intensity, the-level foam extinguishing agent is used to extinguish the-level fire in the compressed air foam system, and the fire extinguishing speed is 20% faster than that of ordinary water. When the mixing ratio is 0.2 to 0.5 and the foaming ratio is 5 to 15 times, the fire extinguishing effect is better. According to the suitable parameters of wood crib fire, this method is also effective after a large number of actual fire extinguishing tests.

Class A foam extinguishing agent (Class A Foam) is a new type of foam extinguishing agent mainly used for fighting solid fires (Class A fire). Compared with ordinary water to fight solid fires, Class A foam extinguishing agent combined with compressed air foam system (Compressed Air Foam Systems,CAFS) has the characteristics of low mixing ratio, fast fire extinguishing speed and low water damage loss. Therefore, the combination of compressed air foam fire engines (also known as Class A foam fire engines) and Class A foam extinguishing agents to fight common municipal fires has become a new technology that has been promoted and applied in many national fire forces, including China.

At present, domestic and foreign development has been able to carry out some enterprises for Class A foam fire extinguishing agent Class A fire extinguishing performance research, but the main content focuses on qualitative or semi-quantitative fire extinguishing performance analysis and evaluation, for Class A foam fire extinguishing agent Class A fire extinguishing performance standardization, quantitative management of fewer researchers. In addition, due to the main problems of China's current A- type foam extinguishing agent combined with the economic system design and use of data compressed air foam, the system is characterized by the foam liquid mixing ratio can be continuously adjusted within a certain time range, although the fire extinguishing technology can improve the students' ability to adapt to the society and applicability of different fire conditions, but also improve the complex impact of the use of information technology products, A more Chinese specific requirement is put forward for the appropriate use of these conditions such as mixing ratio, foaming multiple and other parameters under different fire conditions. Therefore, it is necessary to carry out quantitative risk assessment on the performance of Class A foam fire extinguishing agent, and put forward its appropriate application related parameters, so as to better play the comparative advantage of the performance of fire extinguishing equipment.