McDermott: Major milestone at Ichthys

McDermott International, Inc. announced today that it has successfully delivered the riser support structure (“RSS”) for the INPEX-operated Ichthys LNG Project’s subsea umbilical, riser, flowline development.

 

“The completion of the RSS fabrication, load-out and successful installation is a major milestone,” said Tony Duncan, Executive Vice President Subsea. “Few companies in the industry have the capability to deliver a full engineer, procure, construct and install of a subsea project of this scale and nature. The timely delivery of the RSS is testament to the effective project execution delivery model we have adopted for the Ichthys LNG Project highlighting the strong capabilities of McDermott’s team comprised of industry experts from key locations, including Singapore, Batam and Perth and significantly de-risks the project execution schedule.”

“The completion of the RSS fabrication, load-out and successful installation is a major milestone”

Through smart engineering, McDermott was able to optimize the design and constructability of the structure that translated into cost savings in both time and materials for the customer. The innovative design concept of the structure was brought to reality by the combined expertise of our in-house Singapore based engineering team and our fabrication facility located on Batam Island, Indonesia.

The 7,200-ton RSS connects the field’s subsea infrastructure to a semi-submersible central processing facility. The RSS structure is comprised of a tower, more than 328 feet tall, with an arch 410-foot long also designed and fabricated by McDermott to be installed at a later date, to support 25 large-diameter flexible risers and dynamic umbilicals.

“The RSS accounts for more than 25% of the total 28,700 ton of subsea structures we are fabricating for Ichthys,” explained Duncan. “It is an integral piece of the subsea field architecture as all other subsea structures will be installed and oriented relative to its location.”

In addition to the RSS, the facility is undertaking the fabrication of subsea structures including the Flow Line End Terminations, In Line Tees, manifolds and riser bases.

The Ichthys project awarded to McDermott in 2012 includes EPCI and pre-commissioning of product flowline systems, a Mono Ethylene Glycol injection system, start-up condensate transfer and fuel gas transfer flowline systems, control systems and other associated SURF elements in waters up to 900 feet. McDermott will also install mooring systems for the Floating Production, Storage and Offtake vessel and Central Processing Facility as well as engineering for future flowlines, risers and umbilicals.

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