Mitsubishi Electric recently supported the International Tunneling Symposium organized by the Tunneling Association with a Silver Sponsorship. Mitsubishi Electric Turkey Factory Automation Systems Major Projects Business Development and Factory Automation Director Hüsnü Dökmeci described the solutions of the Marmaray Project, which has a daily passenger capacity of over 500,000. 

Dökmeci provided information about the control system designed by Mitsubishi Electric during the symposium in December. 

"The works of our brand in station and ventilation buildings include control and monitoring of common area and room fans, control and monitoring of low voltage distribution and UPS systems, monitoring of fire and extinguishing systems, control and monitoring of common area lighting, monitoring of clean water, polluted and wastewater system, control and monitoring of the stairs, monitoring of the elevators," he said. 

Dökmeci said that the Marmaray control system designed by Mitsubishi Electric was a 100% redundant system. 

"The Marmaray control system offers 37,000 hardware monitoring and control points, 107,000 software monitoring and control points, 750 operator screen control pages and 100 km communication cable operated 24/7. Therefore, for example, in the event of a fire in the tunnel, the operators can contact the train operator at the relevant incident point and can detect the air flow direction to evacuate the passengers and the smoke. Thus, the system can direct the operator to minimize the possibility of error and easily start the defined ventilation scenario.”

Dökmeci said that all electromechanical systems of the Marmaray BC1 Bosphorus Transition Project are monitored by a SCADA system called SIMS (Station Information Management System).

"Among these subsystems, tunnel and station ventilation, power distribution systems, lighting, flood gates, fire detection and extinguishing systems have a critical importance. All of this is controlled and monitored in full by Mitsubishi Electric's infrastructure. In the tunnel there is also a fully redundant fiber infrastructure. In each station, the control of the subsystems is provided continuously with redundant PLCs. The continuity of the systems, which is very important in underground subway systems, is an extremely sensitive issue when evaluated in terms of passenger safety," he added.