The 132-kV circuit is routed through terrain that made access to tower positions difficult. Therefore, specialized cranes, mounted on an 8 by 8 chassis, had to be used to overcome the variety of sand and soil conditions. The initial phase of the work started in May 1998 and continued during June and July-a time that coincides with the start of winter in South Australia. Initially, the on-site team was able to replace two sections daily, but because of extremely wet weather and short daylight hours, progress slowed as the average daily replacement rate dropped to one conductor section. In view of the adverse working conditions and the need to minimize the possibility of environmental damage, TransGrid agreed with the customer to temporarily leave site after replacing 34 of the 82 sections of conductor.
The second phase of the work was carried out in March and April 1999 when the days were longer and the weather was generally good. During this period, it was common to replace three or four sections of conductor each day. What limited progress the most was the amount of time it took to get to the site and then set up the cranes.
The live-line team on this project was a self-managed work group, requiring minimal customer inspection of its work. Nevertheless, the team's experience, training and focus on safety ensured that the project was accomplished in accordance with the contract.