The use of wildfire sensors in tunnels is needed to detect fires so that quick action can be taken to extinguish them.
Not only that, the importance of using fire detection sensors in tunnels includes several other things, such as minimizing traffic disruption, preventing greater losses, and ensuring user safety.
This article will inform you about the importance and examples of fire detection sensors in tunnels.
Fire Detection Sensor in Tunnels
Fire detection sensors in tunnels aim to identify and activate alarms when a vehicle, electrical, or structural fire is detected within or near the tunnel. These sensors play an important role in ensuring safety in tunnels, especially for public transportation or main lines.
The Benefits
With the benefits of fire detection in tunnels, installing them across tunnel infrastructure is essential. Here are some benefits of fire detection sensors in tunnels:
1. Minimizing Traffic Disruption
One of the main benefits of installing fire sensors in tunnels is their ability to minimize severe traffic congestion. This is due to the devices’ ability to detect fires in specific areas at an early stage.
As a result, emergency teams can quickly isolate and extinguish the threat. This prevents the tunnel from being closed for extended periods and helps maintain the smooth flow of urban traffic.
2. Preventing Infrastructure Damage and Financial Losses
Early-detection sensors enable the automatic fire suppression system to activate immediately. This protects the structural concrete, electrical wiring, and internal ventilation equipment from heat damage.
As a result, there is no need for costly structural repairs to tunnels damaged by fire. Furthermore, the transportation network is not disrupted for months due to repairs.
3. Ensuring User Safety and Safe Evacuation
A sealed tunnel quickly contains heat and toxic smoke in the event of a fire. Early-detection sensors trigger an automatic emergency alarm and the public address system.
From there, drivers and passengers are directed to safe evacuation routes. This way, they avoid inhaling smoke that could be life-threatening.
4. Rapid Emergency Response Dispatch
Modern tunnel sensors transmit real-time telemetry data directly to the central traffic management control room. This allows operators to pinpoint the exact location of a fire.
They can act within seconds and deploy specialized emergency response teams. Guidance based on accurate data ensures precise action.
The Types
Here are the types of tunnel implementations that are usually used:
- Optical Smoke Detector: Uses photoelectric technology to identify smoke particles suspended in the air during the early stages of combustion.
- Infrared Flame Detector: Monitors optical spectrum radiation (UV/IR) to detect active open flames.
- Linear Heat Detection Cable (LHD): Accurately measures temperature rises across the entire length of the tunnel.
Regulatory Compliance and Technical Standards for Tunnel Fire Sensors
Commercial and industrial fire detection systems installed in tunnels must comply with strict telecommunications and safety regulations. This applies to devices using both wired industrial data networks and wireless IoT communication modules.
Before marketing and distributing their devices, manufacturers and importers must obtain official type-approval certification in each target market. Laboratory testing and type-approval certification ensure compliance with international standards relating to Radio Frequency (RF) performance, Electromagnetic Compatibility (EMC), and electrical safety.
By obtaining this certificate, the device is guaranteed to be safe to use and will not interfere with other devices in its vicinity. This is vital to ensure that the device does not interfere with emergency radio communications, traffic control systems or critical tunnel infrastructure.
