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Public Information Booklet Construction Activities Question ñ How will Woodside build the plant? In general terms, key construction activities for the LNG Precinct may include: Activity Description Site preparation Road construction Roads around and within the LNG Precinct will need to be constructed and upgraded to support the development. Pioneer camp/facilities One of the first activities will be to create the pioneer facility to accommodate the workforce that will construct the construction camp and other facilities that are required early. Site clearing and levelling Storm water management Sourcing of fill - aggregate, road base etc. Onshore construction Transport of materials - terrestrial Transport of materials - marine (including modules) Foundations construction The area of the LNG facility and other supporting facilities will be levelled and cleared. This will require bulk earth works to get level areas and may also require activities to improve the foundations for the LNG plant. During construction storm water run off will require active management. Aggregates, road bases, etc. will need to be sourced and excavated for use within the LNG Precinct. Various materials will need to be transported via road to the LNG Precinct. This will include aggregates, supplies and equipment. The majority of the LNG facilities will be imported in the form of large modules by sea direct to the site via the materials offloading facility. Foundations will typically be constructed with concrete and will potentially include the use of piles due to the properties of pindan soils. Ground improvement will be required in some instances to support the foundation system. Tank construction The various tanks will be constructed on site utilising concrete and metal construction techniques. Plant construction (LNG and other) The majority of the LNG facilities will arrive as large modules. These will be transported from the integrated marine facility to their final location where they will be welded into place and the various services connected. 5279225 77
Public Information Booklet Activity Description Nearshore construction Dredging Dredging of the navigation channel, berth pockets and turning basins will be required. The spoil may be disposed of either onshore (for use as fill in the LNG Precinct) or by disposal at sea (in accordance with regulations). Export jetty The export jetty will require piling (likely to be via drilling) and construction of the deck. Breakwater A breakwater most likely using prefabricated concrete or rock may need to be constructed seaward of the berths. Final configuration will be a result of metocean and port studies. Integrated marine facility (IMF) Pipelines (product, MEG, CO2 etc) Installation of pipelines in state waters (3nm) The integrated marine facility is likely to be constructed via the use of dredging, fill, rocks and pre-cast concrete. This will be one of the earliest focus areas for construction to enable the import of material for the LNG Precinct. Pipelines will be laid via a pipelay vessel. Pipeline stabilisation is likely to require a combination of dredging, rock dumping and potentially stabilisation using pre-cast concrete plinths. Shore crossings The pipelines are likely to require a prepared area for the beach landing through to the LNG facility or onshore pipeline corridor depending on the finalised crossing location. The pipeline will be trenched and the crossing area rehabilitated following installation. Installation of pipelines onshore Supporting Infrastructure Onshore the pipelines will be buried in a pipeline corridor(s) through to the LNG facilities. Construction Camp The construction camp will require clearing, levelling, construction of supporting services and the various buildings required. Service Provider Facilities Clearing, levelling, fencing and construction of buildings, storage and hardstand areas as required by the various providers. Lay down area During construction cleared areas will be require for the temporary storage of various items of equipment prior to their installation. Crushing and screening Rock and aggregate obtained from onsite and offsite will need to be crushed and screened for use as aggregate and fill material. This will require a crushing and screening plant. 5279225 78
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