The safety instrumented system is a system that is independent of the petrochemical production process control system and can independently complete the safety interlock protection function. It can avoid significant hazards to production equipment caused by process production failures, field instrument failures, system power supply failures, etc., and ensure safe operation of production equipment. In petrochemical plants, it is imperative to configure a safe, reliable, and timely safety instrumented system. Combined with applying the burner management system of the heating furnace in a refinery, the paper focuses on the technical realization of the hardware structure, system configuration, logic programming, man-machine interface configuration system debugging of the TRICON system. Practical application shows that TRICON?s safety instrumented system is a set of safety instrumented systems with comprehensive functions, safety and reliability, and easy to learn.