Electromechanical and control installations in the Yesa and Liédena tunnels (Navarra)
Execution of electromechanical and safety and control installations for the Yesa and Liédena tunnels, forming part of the Pyrenees A-21 motorway (Navarra).
The electromechanical installations include:
- Ventilation
- Electrical power supply (medium and low voltage)
- Lighting (of the tunnel and outside)
- Extinguishing fires
- Tunnel signage and traffic control system
