Module Offloading Facility Ichthys, Darwin, Australia

INPEX Operations Australia Pty Ltd is the proponent for the construction and operation of hydrocarbon production and export facilities that are required for the development of the Ichthys gas field located off the northern coast of Western Australia.

As part of this development, extensive onshore facilities are required. A Module Offloading Facility (MOF) is built as part of the initial infrastructure to enable the delivery of modules and other materials required for the construction of the LNG plant. The MOF is located on Elizabeth River in Darwin (NT).

The Ichthys MOF project has been an example of close cooperation between Design, Engineering and Construction-teams. This cooperation allowed several important constructability optimizations that benefited the project.

Scope of Work

The main body of the Module Offloading Facility (MOF) is a cellular cofferdam structure, which serves as quay for 1 LoLo and 2 RoRo berths. The MOF also includes associated breasting and mooring dolphins, access catwalk, provisions for marine operations, cathodic protection systems and navigation aids. The causeway leading to the main body and dredging of berth pockets were done by others.

Role DMC

DMC was contracted by BAM Clough JV as their civil marine designer for the MOF and as such responsible for the design of the MOF structure throughout tender, basic and detailed design. DMC have performed all aspects of the design in-house, which besides marine and structural design also included geotechnical design, scour/revetment/slope protection and Dynamic Mooring Analyses.