Fire Doors for Metro Stations and Rail Transit
An underground station is a box with very few exits, so compartmentation there is not a formality — it defines how long the platform can be kept usable during an evacuation. Doors in passenger areas face a combination found nowhere else: continuous airflow from tunnel ventilation pushing against the leaf, thousands of passengers per hour in a surge, and a smoke control system that expects the door to close on command and signal that it did. Plant rooms, traction power rooms and tunnel cross-passages add another layer, where the leaf is specified for equipment access rather than for people. Most transit authorities buy these as one package with the smoke control contractor, because the interface between door, closer and control panel is where commissioning failures usually appear.
قيود موقع التركيب
- Tunnel ventilation pressure holds a leaf off the frame; a standard closer cannot overcome it and the door never fully latches.
- Passenger surge during a train arrival can exceed what a light-gauge leaf and standard hinges were designed for.
- Wide equipment openings in plant rooms need multi-leaf or oversized assemblies that most catalogue ranges do not cover.
- Smoke control panels need a volt-free contact from every door; missing interface wiring shows up only at integrated testing.
- Station finishes are cleaned aggressively and the platform is damp — coatings blister at the bottom rail first.
كيف نحدد المواصفات
- Installation: agree the closer force and the hold-open release logic with the smoke control contractor before frames are fixed.
- Documents: leaf-by-leaf interface matrix (door ID, closer type, contact type, panel address) is the document that saves the integrated test.
- Maintenance: tunnel-side doors need a quarterly closer and latch check; airflow hides a failing latch until the test.
فئات ذات صلة
- Oversized & Industrial Fire DoorsPlant rooms and traction power rooms where the opening is sized for equipment, not for people.
- Steel Fire DoorsPassenger corridors, staff areas and cross-passages: heavy-duty leaves with hardware sized for continuous use.
- Fire ShuttersConcourse openings and atrium line-of-travel where a swinging leaf would block passenger flow.
- Refuge Room Fire DoorsRefuge and safe-area rooms that must stay tenable while the platform is being evacuated.
Send the station door schedule, opening sizes and smoke control interface requirements.