A rope access technician working above water on an FPSO Riser turret mooring (RTM) offshore

OKHA, NGA, NY & NE Shutdowns

Between 2014 and 2020, Vertech was engaged to complete all shutdown and turnaround inspections across Woodside’s fleet of floating assets. Scopes of work included IRATA specialist trade and maintenance servicesRDVI, AICIP intrusive pressure vessels inspections, safety-critical inspections, Non-Destructive Testing (NDT), and coating remediation across all areas of the topsides.

Outages were often opportune times to complete flare structure inspections and composite applications to crude oil tanks. It was a great privilege for us and or teams to support the dedicated crews that man the assets and to ensure the ongoing high quality integrity management of the assets.

The Assets

A Woodside image of the Okha floating production storage and offloading (FPSO) vessel on station.


The Okha floating production storage and offloading (FPSO) vessel is an oil production facility moored to a riser turret located approximately 115 kilometres northwest of Dampier, Western Australia. The Cossack, Wanaea, Lambert and Hermes oil fields are connected by flexible flowlines. Crude oil is offloaded from the facility via a flexible line to bulk tankers, while a pipeline exports LPG-rich gas from the Cossack and Wanaea fields to the NRC, before being transferred to the Karratha Gas Plant for processing.

A Woodside supplied image of the Ngujima-Yin FPSO located over the Vincent oil field in Western Australia.

Ngujima-Yin (NY) FPSO

The Ngujima-Yin FPSO is an oil production facility located over the Vincent oil field in Western Australia, 50 kilometres northwest of Exmouth. Ngujima-Yin is a Thalanjyi word meaning “to dream”. The Greater Enfield Project was completed in 2018, developing the Laverda Canyon, Norton over Laverda, and Cimatti oil accumulations through a subsea tie back to Ngujima-Yin. The project scope included a major refit of the Ngujima-Yin FPSO, installation of subsea infrastructure, and 12 development wells.

A Woodside supplied Image of the Nganhurra (NGA) FPSO on station before it was decommissioned.

Nganhurra (NGA) FPSO

The Nganhurra was built in the Samsung shipyards on Geoje Island, South Korea, in 2006 with Its build and commissioning took 19 months, setting an industry record for a complete FPSO project. The asset was moored at a reservoir, about 50 km north, northwest of Exmouth on the Enfield Oil field until the curtain fell in Q4 2018 on Nganhurra’ s 13-year stint. The last three years of operation saw the asset deliver a top quartile performance with average reliability of more than 96 per cent.

The Northern Endeavour Floating Production Storage and Offloading (NE FPSO) facility before ceasing operations.

Northern Endeavor (NE) FPSO

The Northern Endeavour Floating Production Storage and Offloading (NE FPSO) facility started production since 1999. The NE FPSO is located offshore in the Timor Sea approximately 550 km West Northwest of Darwin and 250 km East Southeast of Kupang in West Timor. The Asset and associated fields were sold to Northern Oil and Gas Australia in 2016.

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A vertech IRATA Rope Access Technician hangs suspended from ropes as part of an NDT inspection.