Arrow Energy’s Tipton Water Treatment Scheme consists of a water treatment facility, storage dams, water off takes and pipelines for the Tipton Gas Field.
The project allows for the processing of water produced from the Tipton Gas Fields and to facilitate draw-down of the existing water aggregation dams.
Nacap’s component of the works were the pipeline installation, and includes the preparation and rehabilitation of the ROW, construction, installation and testing of both water and gas polyethylene (HDPE) pipelines.
Associated works included installation of valves, valve pits, tie- ins to existing lines, dam discharge pipework and above ground metering skids.
The pipeline scope consisted of 13.4km of 8 HDPE pipelines ranging from DN160 to DN450 to transfer water (CSG water, RO plant product water and RO plant brine water) and 1.0km ofDN125 HDPE pipe to convey coal seam gas.
The Tipton site contained multiple head contractors performing simultaneous works for Arrow Energy. Significant coordination and liaison was required to ensure works were conducted safely and minimising impact upon other contractors.
Hydrostatic testing occurred concurrently on multiple pipelines (3no. lines) to optimise the project programme.
Installation of up to 7 pipelines within a 15m ROW, including a 3-way junction involving the installation of 7 pipelines at different depths.
Practical completion of the project was achieved ahead of schedule and on budget.