APLNG appointed Nacap to for the construction and testing of 60km of varying DN300 to DN600 grade X70 steel gas pipelines and 57km of varying 630NB HDPE water pipelines and associated end-line facilities.
Nacap was responsible for the overall site management, health and safety, quality, design, procurement, project controls and reporting, construction, testing and commissioning. Nacap self-performed the Right of Way Earthworks, Dig Lay and Backfill as well as Welding elements.
There were a number of large subcontracts that included Horizontal Directional Drilling (HDD), Pipe Supply and Haulage, Camp and Facilities Building and Hydrotesting (NATA Testing).
The works were constructed through multiple State and local roads, farm properties, State park reserves, third party gas consortium properties, an active QCLNG gas plant and rivers and creeks (nine HDD crossings each 720m long), as well as operating gas pipelines. Nacap were responsible for the construction interface for all stakeholders during the project including the development and implementation of the Environmental Management Plan.
This project was undertaken in the centre of the Queensland gas upstream environment, which resulted in significant liaison being required with all of the major Australian gas supply organisations.
All air and scour valve fabrication was self-performed in a workshop enabling construction to continue during wet weather.
The project was completed within the agreed timeframe and budget meeting the client’s expectations, in a complex brownfields environment.