McConnell Dowell was awarded the design and build contract by PT Saipem Indonesia for the marine works for BP’s LNG expansion project in Tangguh, located in the remote area of Bintuni Bay in West Papua. PT Saipem Indonesia was part of an EPC joint venture involving Chiyoda-Saipem -Tritati -SAE (CSTS consortium).

The marine works comprised of a 1.1 km long trestle, a loading platform and 10 mooring/berthing dolphins. The onshore expansion works contained a full additional natural gas liquefaction train, including an onshore receiving facility (ORF), an additional Boil of Gas (BOG) recovery, utilities, flares, and all infrastructure to support the facility

McConnell Dowell’s specific scope of works included:

• A 1056 m long access trestle, including decks for the local control room, substation and sea water intake
• 29 m x 42.5 m loading platform for the jetty with two gangways
• 4 breasting dolphins for the jetty
• 6 mooring dolphins for the jetty with 2 tugboat landings.
• Provision of the quick release hooks and docking assistance system
• Oil spill containment and catwalks
• Installation of loading arms and pipe racks supplied by PT Saipem Indonesia
• Bulk Off Loading Facility (BOF) consisting of a sheet pile retaining wall, anchor walls and concrete copings

PT Saipem Indonesia awarded the contract to McConnell Dowell due to our technical experience and in particular our ability to build the trestle with a crane traveler method that:

• Minimised offshore work near the existing LNG Loading facility
• Minimised the disturbance to the mangrove area
• Eliminated the impact on production during low tide in shallow waters
• Maximised prefabrication work off-site
• Minimised manpower on site

McConnell Dowell was awarded the “Best Performing Sub Contractor" award by British Petroleum (BP) for our safety and environmental management.