We chose the Promax RR14 EVO rail-mounted MEWP for the job.  Over the coming weeks we worked closely with the TfL team to modify the plant so it met the special constraints needed for operation in LU’s tunnels.

With TRS, TfL and our suppliers working together to formulate, design and make the practical modifications, the MEWPs were approved in less than 3 months.

Four significant alterations were made:

1. Design and installation of a blind spot camera system
   When unrestricted by space MEWPs can swivel 180º, so the operator/driver faces the direction of travel. However, the machine cannot swivel fully in a tunnel and must be driven in reverse either to or from the work site.We therefore installed a camera on the far end of the machine from the driver and a monitor screen by the driver in the operating platform, so a clear path could be seen at all times.
2. Enhanced fire suppression
   To operate in LU’s tunnels, all plant must have a fire suppression system. We fitted patented Firetrace detection tubing and extinguishant.
3. Operator crush protection system
   A special anti-entrapment system was designed and installed by the MEWP manufacturer, Promax. This is an additional frame built over the platform’s operating controls with an automatic power cut-out. The frame prevents someone pushing against the levers if they get trapped between the platform and the tunnel and automatically cuts power to the controls.
4. Use of EcoPar fuel
   We used EcoPar fuel, a natural gas, low carbon fuel, to power our MEWPs. EcoPar contains no sulphur, no aromatics and no benzene, dramatically reducing the production of harmful diesel particulates.  This made it especially beneficial for use in LU’s tunnels where air ventilation is poor.