PROJECT: GOVE 22KV FEEDER UPGRADE
Date: Sept 2017 – Feb 2018
Client: PowerlinesPlus / Rio Tinto
Description: This project involves the replacement of 18km of steel tower line supplying the main mine and the township. A new line on steel poles will be constructed adjacent to the existing line and the old line dismantled. Wedcon’s scope included survey of the existing lines and infrastructure and selection of the best alignment for the new line. The new line was designed in PLS Cadd including modelling of the existing lines – some of which will remain in service. The design included the steel pole structures, assembly drawings, foundations earthing and stay anchors. The line is located very close to the coast in a cyclonic region and has to withstand very high winds as well as high pollution from mining activities.
PROJECT: OAKEY SOLAR FARM 33KV TRANSMISSION LINE
Date: Aug 2017-2018
Client: RCR Tomlinson
Description: Design of a 6.5km long double-circuit 33kV transmission line near Oakey in Southwest Queensland to connect a 80MW Solar Farm to the Electricity Grid. The line will be constructed on concrete poles and strung with SELENIUM conductor and OPGW earthwire. Wedcon’s scope included the line route survey, soil resistivity testing, PLS Cadd Layout Design, development of structures and assembly drawings. The line had to comply with Ergon Energy standards so the asset could be transferred in the future. Additional to the scope was a Low Frequency Induction study for two steel High-Pressure Gas Transmission pipelines that run parallel to the line.
PROJECT: QCOAL BYERWEN MINE 66KV & 11KV LINES
Date: Aug 2017 – March 2018
Client: Persal & Co
Description: Survey and design of a 14km of 66kV incoming line plus 2km of various 11kV lines for on-site reticulation for a new coal mine project in Central Queensland.
PROJECT: CURRAGH MINE 66KV LOW-WALL STUBLINE
Date: June 2017-18
Client: Persal & Co
Description: Survey and design of a 6.2km of 66kV line consisting of 4.4km on concrete poles and 1.8km on wood poles for a coal mine expansion project in Central Queensland. As a cost saving the client wanted to use a range of pre-used concrete poles stored on site that had been recovered from various line retractions and relocations over the past 30 years. While some of the poles were from jobs previously designed by ourselves, many were from an older period with limited records. This required carefully measuring the poles and working with the original manufacturer to determine the pole strength and moment capacities and designing hardware to suit to the layout of the tubes.