Abstract: The traditional training methods of emergency detection on the scene of chemical accident usually provides equipment use training and inspection operation process training for firefighters with detection equipment, but there are some problems in the actual training, such as insufficient equipment, expensive consumables and difficult to set up training fields. In view of the actual demand, research on chemical detection simulation training system was carried out. The system mainly consists of three modules: chemical detection information base, instrument training and actual combat training. The system framework, main function structure of each model and the implementation techique were introduced. The system enables the trainees to master the operation methods of various chemical detection and detection instruments and the specific procedures of chemical detection, so as to improve the ability of the fire rescue teams to detect chemical accidents at the scene.

Key words: fire safety, virtual simulation, detection training;unreal engine, hazardous chemicals