Solution & Implementation
Specially-developed subsea machining equipment and tooling was designed and fabricated by Furmanite Australia for TSEP, to machine RTJ joints on the new subsea pipeline at 120 metres depth.
The equipment was supplied to the Technip-Coflexip Subsea 7 joint venture for the project. Woodside Energy has installed a large diameter multiphase subsea trunkline to increase the production capacity from its gas condensate fields located off the North West coast. The new trunkline extends from the existing onshore facilities near Dampier to the North Rankin ‘A’ platform located 135km offshore.
Furmanite’s diver-operated equipment, based on an air-driven machine design and converted to hydraulic drive, was designed and delivered as a contingency measure for the project. The machine used has an operating range from 600mm to 2100mm and weighing 900kg. Automatic feeds and various other modifications were carried out to convert the machine from air operation to hydraulic drive, and make it suitable for operation at 120 metres.