Abstract: Automatic fire alarm system is a common building fire protection facility in modern buildings. This paper summarized the fire supervision and inspection experience of automatic fire alarm systems in recent years, and deeply studied the types, distribution characteristics and search methods of hidden problems, and formed a set of inspection methods for automatic fire alarm systems. Based on a large number of sample data from fire supervision and inspection in many provinces and cities in recent years, the analysis and calculation of the correlation between the number of hidden dangers of the automatic fire alarm system and the per capita GDP have been carried out. Systematic statistics and analysis of the inspection situation was shown in this paper, and it was discovered that the automatic fire alarm system mainly has three types of hidden problems: fire protection control room equipment, field equipment, and system function. From the five aspects of initial design, installation and commissioning, equipment selection, maintenance and safety management, each category of hidden dangers was analyzed and researched, and reasonable suggestions were put forward. The research results can be directly applied to our country's fire protection supervision and management policy formulation, development planning and daily supervision and inspection work, providing scientific technical support and data foundation for fire protection supervision and inspection.

Key words: automatic fire alarm system, fire supervision, hidden problem, average equivalent failure rate