Siemens SCADA Specialist

Certified ISO 9001, ISO 45001 & ISO 14001

Mersey Tunnels

Tunnel Pollution Monitoring

MerseyTravel contracted AIS for the design and development of a pollution monitoring and SCADA system.

The system includes fourteen sensors in the two Mersey Tunnels that monitor levels of CO, NOx, Visibility and NO2. The data from these are sent back to a Siemens PLC that feeds information into the existing SCADA system as well as driving a new overview mimic for both tunnels.

The system involved a phased installation and transition from the existing sensors to the new sensors and from the existing SCADA system to the new SCADA system.

A Codel TunnelCraft 3 CO, NO & VIS Sensor in place in the Queensway Tunnel.
An example user interface screen showing the pollution levels from the fourteen sensors.