The elevators and escalators in TIAA MRT stations are important transport equipment mainly to assist those with limited mobility and transport the large number of passengers quickly in and out of the station so they play very important roles in system operation. The evaluation key points of the environment interface of installing the equipment are as follows:
The TIAA MRT crosses three jurisdictions including Taipei, New Taipei and Taoyuan City. Since Taiwan belongs in an island climate area where typhoons are frequent in summer and the northeast monsoon occurs in the winter, elevated stations are easily damp and unit pits may easily accumulate water during heavy rain. Therefore, installation of the equipment should consider building openings and route direction to reduce the impact from the environment and climate.
2.Building models and equipment configuration
The majority of TIAA MRT stations is elevated stations and adopted the green building model’s designs. Elevated stations are designed with large airy open spaces so equipment is susceptible to wind and rain causing moisture damage and malfunction. Although currently weatherproof facilities and intercepting drains are strengthened, it is still difficult to completely prevent rain from entering during typhoon weather and heavy rain. Equipment should consider full coverage or installing inside the station to reduce the damage and failure caused by the rain.
3.Drainage approach for unit pits
Currently, the drainage approach for unit pits of equipment is divided into gravity drainage and non-gravity drainage approaches according to whether the unit pit is on the ground floor or second floor. When using the gravity drainage approach, water accumulation does not occur often but the waterway needs to be regularly checked for blockage. As for the non-gravity drainage approach, there are the automatic drainage pump and water level detection with mobile pump according to whether the equipment can be observed externally or if it is reserved structure. When adopting the automatic drainage pump, the pump and float sensor switch should be regularly monitored; the water level detection with mobile pump requires an operator to utilize the mobile pump to extract water from the unit pit when the water level detection alarm rings. In addition, this protocol requires elevator/escalator maintenance staff to assist in opening the elevator door or unit pit cover.
4.Electrical outlet settings of unit pits
When affected by the rain, the pit sockets in the unit pit either on the side wall or embedded is likely to trip the protective switch. Currently, the station has enhanced wind and rain prevention measures so that rain should less likely enter the unit pit. In addition, channel steel can be installed at the bottom of the socket case to prevent rainwater from entering and triggering the failure switch.