Projects
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Mersey Travel, Tunnel Control System
Morson Praxis supported Merseytravel with the modernisation of the tunnel control systems for the Kingsway and Queensway tunnels.
Client Brief
Modernising Critical Tunnel Control Infrastructure
Merseytravel required a single, unified SCADA system to replace five separate control systems operating across the Kingsway and Queensway tunnels. The project aimed to improve operational efficiency, increase system reliability, and provide a modern control platform capable of supporting the long-term operation of the tunnel network.
The upgrade also required the replacement of legacy PLC infrastructure while ensuring the tunnels remained operational throughout the implementation programme.
Project Overview
Delivering a Phased SCADA and PLC Upgrade
The project involved replacing the existing Modicon 984-145 PLC outstations with new Ethernet-enabled Schneider Electric outstations connected to the client’s converged IP network, replacing the legacy Modbus Plus communications infrastructure.
To minimise disruption to tunnel operations, the new SCADA platform and PLCs were introduced through a carefully managed phased migration. Each outstation panel was transferred individually, allowing operational functions to be progressively migrated from the existing FactoryLink SCADA system while maintaining the safe and reliable operation of the tunnels.
Image Gallery
Modernising the Kingsway and Queensway tunnel control systems through a unified SCADA platform.
Our Solutions
SCADA, PLC and Control Systems Engineering
Morson Praxis delivered specialist control systems engineering to support the transition from multiple legacy control systems to a single integrated SCADA solution.
Our team designed and coordinated the phased replacement of PLC outstations and communications infrastructure, ensuring seamless integration with the client’s IP network. By carefully planning each stage of the migration, we helped maintain operational continuity while delivering a modern, future-ready control system.
Results
A More Reliable and Integrated Tunnel Control System
The new SCADA platform provides a unified control environment for the Kingsway and Queensway tunnels, replacing multiple legacy systems with a modern, integrated solution.
Through a phased implementation approach, Morson Praxis helped improve the reliability, maintainability, and long-term resilience of the tunnel control infrastructure while minimising disruption to day-to-day operations.
