Tunnel Electromechanical Systems

MC System establishes turnkey Tunnel Electromechanical Systems. Tunnel Electromechanical Systems are advanced systems running with integrated automatic scenarios via sub or main control centers

Security based solutions in tunnels are met main requirements of standards which are stated below.

  • PIARC, Fire and Smoke Control in Road Tunnels [l]
  • Pollution by Nitrogen Dioxide in Road Tunnel [2]
  • Classification of Tunnel Existing Guidelines and Experiences, Recommendations [3]
  • Directive of the European Parliament and of the Council [4],
  • NFPA Standard for Road Tunnel; Bridges and Other Limited Access Highways [5]
  • Fire in Tunnel Thematic Network [6]


Energy systems in tunnels are designed to meet the requirements of IEC, National Electrical Code (NEC), VDE, IEEE, ANSI, CE, IPS, and NPCS standards. Low-Voltage Panels are produced considering the existing situation of the facilities. Cabling is made conveniently to cross-section of tunnels construction with IPCEA, IEC, BS, VDE, IEEE, ANSI, CE, IPS, NPCS, NFPA, and API standards. Cables that are used for tunnels are unique pursuant to project

To prevent the system from power shutdowns, uninterruptible power supplies (UPS) and batteries are used. All emergency power supply units are integrated with SCADA.

Lighting is designed according to CIE 88-1990 and CEN CR14380: 2003 standards to provide safe driving. Entire lighting system is integrated with other systems.

Bidirectional, axial-flow fans are used for tunnel ventilation. Tunnel ventilation system designs and calculations are made according to PIARC 1995 ve PIARC 2004.

Fire extinguishing system designs are based on the NFPA, UL standards. Linear heat detection systems are installed in order to detect the fire in early stages. This system can detect the unusual heat increase instantly via fiber optic cables, which are placed on the ceiling. Linear heat detection system, which is a part of the Tunnel Control System, is automatically initiated in any fire emergency scenarios.

Event Detection System, integrated with cameras and traffic signs, is installed to provide safe driving. The system instantly detects any pedestrian, stationary vehicle, car on the opposite lane or drives slowly, unusual object on the road or smoke and sends signal the related emergency area and warns drivers and operator.

Variable Message Sign (VMS), Variable Traffic Signs (VTS), Traffic Lights, lighted barriers, Mechanical Plate identification systems and radar systems are installed in order to regulate interior and exterior traffic through SCADA simulated with fully automatic scenarios.