Safety Reliability Method Applied to Evaluate Smoke Control System of Fire Accident in the Tunnel of Mass Rapid Transit System

This article utilizes CFD software to investigate the smoke control system of the safety reliability for the underground Mass Rapid Transit (MRT) system. The purpose of this research is to simulate the fire occurring lit the tunnel region where the smoke control system design, arc corresponding to the National Federation of Paralegal Associations 130 (NFPA130). Tire smoke control mode of the tunnel includes the Tunnel Ventilation Fan (TNT) and Jet Air Fan (JAF) in the station. The control strategies of the TVF, JAF, and the, flow phenomenon of tire smoke in the fire environment :ere simulated by commercial software, PHOENICS. In the numerical simulation, flee results show that tinder the conditions of turning on the TVF and JAF in 3 minutes later, if the fire in the tunnel region attains the criterion of temperature field (<60 degrees C), the concentration of carbon monoxide (<1500ppm), radiation intensity (<6.3kW/m(2)) and risibility (>= 10m), passengers., can evacuate from these safe passages. The smoke control system in this paper is very useful for fire accidents of the tunnel. The study verifies that simulation result is in good agreement with the standard of NFPA130.