The most modern equipment will be installed at the stations of the M3 metro
Metro fire, power outage - fortunately, such incidents occur only once every few years in the metro, yet they are unavoidable factors during installation and reconstruction. In a potential emergency, man high-pressure water mist extinguishing system, lighting fixtures, and directional lights can ensure the safe exit of passengers from the metro stations and their surroundings.
The chance of a complete system shutdown due to a power outage is practically very low, but the "Big Brother" is constantly watching: in the ÁDI – or the Station Dispatcher Service – room, the life of the station is monitored 24 hours a day through screens, and the technical duty officer also monitors the electrical and mechanical systems. The fire alarm intervention center is also located here, which sends and receives various signals in the event of a fire. For complete safety, each area is monitored by a separate unit.
In an evacuation situation - say in the case of a fire or power outage - the safe exit of passengers is assisted by various indicator lights. The exit indicator light fixtures are usually installed on the ceiling or door. The other indicator light that helps passengers navigate is the escape indicator arrows built into the stone pavement of the platform.
Regarding fire protection systems, it is also worth mentioning the water mist extinguishing system, which uses significantly less water compared to traditional sprinkler systems. The system, which operates at an extraordinary pressure (120 bar), atomizes the extinguishing agent into tiny droplets, making it a very advantageous and environmentally friendly technology that does not damage electrical surfaces, and the equipment remains operational even after extinguishing. Alongside the cable tunnel, the track area and the escalator slope pits are also protected by this system. The extinguishing heads are placed under the escalator, but in a critical situation, the main ventilation system is also called upon: if a fire breaks out on the platform level, air is blown down against the escape direction using JET (exhaust/inlet) fans from the surface entrance, allowing passengers to escape through a smoke-free corridor.
In the track area, the fire hazard also applies to the trains. Therefore, the extinguishing heads are installed on the tracks, specifically on the pipe running between the two rails. From here, the mist rises and extinguishes any fire that may have started on the train.
The photos and material were prepared by Magyar Építők
