Gorgon, NW Australia

A breakwater was built for the Gorgon LNG terminal in North West Australia. The breakwater was armoured by a large number of Xbloc armour units.

The production of the Xblocs was carried out by BAM Decorient, Indonesia. The Xblocs were produced in the port of Cigading, Java, and loaded onto barges which transport the Xblocs to Australia. The breakwater for the LNG terminal in NW Australia has two purposes, it is the causeway leading to the LNG jetty and it provides shelter for the tug berths. Xbloc placement was done by Thiess and Boskalis.

Location

Gorgon, NW Australia

Project milestones

  • Start of Xbloc mould fabrication: February 2010
  • Start of Xbloc production: March 2010
  • First Load Out 800 Xblocs: October 2010
  • Start placement: March 2011
  • All Xbloc units produced: October 2011
  • Xbloc breakwater completed: July 2012
  • All Xblocs placed: March 2013

Project details

  • Hs = 6.0 m
  • Water depth = 9.0 m at DWL
  • Length of breakwater = 2.5 km
  • Size of Xblocs = 1.5 and 6 m3
  • Number of units = 40,200

Xbloc placement on Barrow Island

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