Clem Jones Tunnel Cross-Tunnel Panels and Roadside Cabinets

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Following on from NOJA Power’s success with recent works associated with the Abbot Point Coal Upgrade, John Holland contracted NOJA Power to design, manufacture and deliver the MCC for their Abbot Point X50 Expansion Marine Works and SL2 Shiploader Contract.

NOJA Power is pleased to be supplying United Group with a batch of roadside cabinets and cross-passage panels as part of the Clem Jones tunnel (formerly North South Bypass tunnel) project in our home city of Brisbane, Queensland.
United Group is a leading Australian diversified services company, with over 30 years experience in providing construction, engineering, and maintenance services for companies and governments worldwide.
NOJA Power will assemble and deliver 45 cross-passage panels for placement through the tunnel, and 46 roadside cabinets for placement near incoming and outgoing traffic.

Cross-Tunnel Panels being assembled for the
Clem Jones Tunnel

The cross-passage panels will be situated in cross-passages between the northbound and southbound sections of the tunnel, and will be responsible for power distribution, active monitoring and control of essential systems (ventilation, lighting, alarms), for relaying and controlling variable traffic signs, and for controlling the tunnel’s CCTV system. Each panel will be equipped with a PLC unit for intelligent relay control. Due to the enclosed nature of the environment, the PVC wiring and bracketing in the units have been replaced with LSZH thermoplastics.

The roadside cabinets are to-specification roadside cabinets with an active ventilation system designed to keep the cabinet internals within 1-2°C of the ambient temperature. They will be responsible for monitoring the traffic conditions outside the tunnels, and relaying this Information to the tunnel SCADA system as well as the cross-passage PLCs for automated control of the variable traffic signs.