SCOPE OF WORKS

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1. Compressor Jacking Operations

Contractors and Technology:
ALS assisted Alevro on the project, executed the heavy lift operation. Enerpac EVO synchronous jack-down system was employed, designed for 3600-tonne modules. The system included:

• 44 climbing jacks on 1.2-meter stacks with 500 mm climbing jack frames
• Two EVO hydraulic power packs controlling 24 jacks on 12 hydraulic lines
• Enerpac 250T jacks capable of precise load transfer
• Tilting mode for smooth alignment during load transfer from Self-Propelled Modular Transporters (SPMTs)

2. Compressor Module Characteristics:

• Each compressor module weighed ~3600 tonnes
• Dimensions: 63 m long, 30 m wide, 30 m high
• Transported from the quayside using SPMTs with 168 axle lines and eight power packs
• Modules precisely positioned onto pre-prepared foundations

3. Operational Details:

• Jacking involved transferring the module from SPMTs to climbing jacks
• Electrical power requirement for the hydraulic system was ~7.5 kW
• Pre-planning ensured the operation avoided structural clashes via bespoke jacking frame design
• The process was recognized by the Crane Industry Council of Australia (CICA), winning awards for innovation

4. Project Scope:
ALS assisted with 3 modules weighing 3,600 tonnes each. Compressor modules were placed onto reinforced foundations embedded in concrete (~3600 m³ poured). Comprehensive safety planning ensured both module stability and personnel safety.

5. Significance:
The jack-down of 3600-tonne compressors represents one of the largest synchronous multi-point lifts in the LNG sector. It supports seamless processing of Scarborough gas to LNG, enhancing Western Australia’s energy exports.

MORE PROJECTS

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