The overall planning of the TIAA MRT safety strategy is based on Regulation NFPA130 of the United States National Fire Protection Association. The asylum principle of tunnel fire prevention is that when the train inside the tunnel caught fire, it should go as far as possible to the next stop and immediately implement station fire rescue measures. The train that has not entered underground sections should also avoid entering underground sections. If the train must stop in the tunnel due to special reasons, there are two evacuation ways according to personnel rescue procedures including rescue train evacuation and detrainment on to the track:
1.Rescue train evacuation: when the safety of the passengers is not immediately threatened (such as equipment failure or obstructions), the first priority is to use another train to pull the accident vehicle out of the accident site or to take the passengers back to the station in another empty train if there is still power supply in the rail.
2.Detrainment on to the track: when passengers must evacuate on the rail, the power of the conduct rails should first be cut off. Then, relevant staff should guide passengers to the nearest escape exit or station to evacuate. The tunnel ventilation system should also be turned on in line with the direction of passenger evacuation to start exhaust smoke.
In coordination with passenger needs, the configuration principles of security requirements of detrainment on to the track related facilities are shown in Figure 1. The most significant tunnel disaster prevention section of the TIAA MRT System is the Taoyuan Airport section. Therefore, according to configuration principles, using the configuration between A11 to A14 stations as an example, the communication channel configuration is also shown in Figure 1. In addition, other facilities include a security walkway (Figure 2), emergency lighting (Figure 3), evacuation direction indicator, emergency exit indicator, power-off facilities of the third rail (for use during emergency power off, Figure 4), emergency escape exit (to guide passengers to climb through the stairs to evacuate to the ground; take the emergency exit of China Airlines maintenance plant as an example, Figure 5), the tunnel ventilation system and smoke control system (the ventilation air direction is the opposite direction from the passenger escape route to ensure that passengers has fresh air in front of them, Figure 6), a communication channel (separated from the tunnel by 2-hour fire resistance safety door; a safe refuge to provide positive air supply, Figure 7) to coordinate with the overall disaster prevention mechanism to ensure passenger safety.