Massive valves destined for WA’s Ichthys LNG Project

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  • Plant & Equipment

The world’s largest forged body specialty valves have been created by McDermott for use both offshore and onshore in the INPEX-operated Ichthys LNG Project in Western Australia.

Massive valves destined for WA’s Ichthys LNG Project
Representatives from the INPEX Ichthys Project and McDermott during a valve manufacturing inspection at a factory in Italy.

Nearly two years in the planning and development, each valve measures about 9 meters in length and 7 meters high, and weighs more than 100 tonnes.

"The Ichthys Project umbilical, riser and flowline infrastructure — which will be installed at the Ichthys Field offshore Western Australia — requires connection of the subsea riser base to the 42-inch gas export pipeline going to the onshore LNG processing facility," McDermott senior project director Jonathan Parkes says.

"This meant that six 42-inch valves had to be specially designed and fabricated to meet the 40-year design criteria. To our knowledge, these are the world’s largest, single-piece-forged, top-entry ball valves."

The first valve has been successfully built and tested, McDermott says, while the second is currently undergoing factory acceptance testing.

Once all six valves have passed factory testing, two will be installed offshore in 270m of water, while the remaining four will be installed onshore, one at the landfall block valve and three at the processing facility at Bladin Point.


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