Victorian Northern Interconnect Expansion

Type of project: Gas Infrastructure

Client: APA Group
Location: Wollert (VIC), Wodonga (NSW), Australia
Completed in: 2018

Spiecapag was awarded the contract for the construction of 165 km of domestic gas looping pipelines comprising 95 km of DN400 pipe in Victoria and 70 km of DN450 pipe in NSW. Crossing hundreds of rural and semi-rural properties, the project included seven loops spread over 500 km, two of which were in NSW and five in Victoria. The entire pipeline was constructed within the easement of an existing live high-pressure pipeline. Detailed engineering analysis was undertaken, and strict processes put in place to guaranty the integrity of the existing line throughout the project.

As the loops were spread over 500 km, three offices and logistics yard were established in Young (NSW), Wangaratta (VIC), and in Cootamundra (NSW).

The full scope of the works included six Main Line Valves, scraper stations, pig launcher, receivers associated pipe supports, civils works and E&I works in the facilities compounds, eleven tie-ins, four railway crossings, and thirty-eight HDD road crossings.