Bus duct replacement – 140 St Georges Terrace, Perth

Scope of the bus duct replacement project:

140 St Georges Terrace is an 30 storey A-grade commercial office tower located in the heart of the Perth CBD. In order to complete modernisation of the goods lift, consultants identified a requirement to remove and replace an existing 3200amp bus duct that had been installed in the lift shaft approximately 25 years earlier. Infrared Services participated in a competitive tender process and was awarded the project.

First it was necessary to create a pathway for the new bus duct, leaving the existing bus duct in-service to ensure reliable supply to the mechanical services equipment. This was achieved by working out of hours and clearing a reticulation space through the existing electrical riser. Secondly it was necessary to install approximately 150 metres of new Schneider i-Line II bus duct through the electrical riser, starting at the site main switchroom in the basement and terminating at the main mechanical services plantroom on the 30th floor. Then, utilising a brief shutdown window of less than 12 hours, the new bus duct was terminated at the site main switchboard and main mechanical services switchboard. Finally, in order to achieve compliance for the lift modernisation, our technicians removed the redundant bus duct from within the goods lift shaft.

As always this complex, difficult project was completed on time, on budget, and with zero safety incidents. The bus duct replacement project budget was approximately $270k.