HEAVY LIFTING Ӏ SECTOR ROUNDUP
sections (cans and cones) in the world –measuring up to 4.2 metres length, 15.5 metres in diameter, and weighing up to 125 tonnes. MultiSec will supply the C-hook to offshore monopile manufacturer SeAH Wind. MultiSec’s C-Hook design is
different to traditional designs – which only allow single directional tilt adjustment. By incorporating a dual gantry crane system into the hook itself, with motorised counterweights that can travel to either side of the lifting point, the hook can rotate both clockwise and counterclockwise. This means the same hook can be used to lift a range of cans and cones for offshore wind monopiles with varying sizes and centre of gravity. In addition, for added strength
and safety, MultiSec has ensured that the hook’s mechanical load path avoids transferring primary loads through welds. According to MultiSec the scale
and strength of the C-hook reflect its commitment to pushing the boundaries of lifting technology. The new C-hook attracted the attention of the Mayor of Middlesbrough, Chris Cooke, who visited MultiSec’s premises to see it in person. Multisec says that his visit celebrates not only a major achievement in heavy lifting innovation but also the strength and capability of local manufacturing in Teesside. Together, all these developments
showcase a sector that is both expanding and innovating – leveraging collaboration, advanced technology, and specialist expertise to tackle ever more complex projects. As energy transition, infrastructure growth and offshore expansion continue to accelerate worldwide the heavy lifting industry is adapting with new tools, stronger alliances, and smarter solutions – reaffirming the industry’s pivotal role in building the foundations of the future – one lift at a time.
20 CRANES TODAY
3600-TONNE LNG COMPRESSOR INSTALLATION BY ALEVR UTILISES ENERPAC EVO SYSTEM
Alevro, a joint venture between Australian engineering services provider Monadelphous, and Italian heavy lift specialist Fagioli, has used an Enerpac EVO System for the synchronous jack-down of three 3600-tonne LNG compressors at the Pluto LNG onshore facility near Karratha in Western Australia (WA). Pluto Train 2 will process gas from the Scarborough natural gas field located in the Carnarvon
Basin, approximately 375km off the coast of WA. Upon completion, Pluto Train 2 will have an LNG capacity of ~5 million tonnes per annum. Alevro transported the LNG compressors from the quayside via Self-Propelled Modular
Transporters (SPMTs) and, using a jack-down process, lowered the compressors onto the foundations with the Enerpac EVO System. The sheer size and weight of compressors meant that pre-planning was critical for the project.
Each compressor is approximately 63m long, 30m wide and 30m high. The site was prepared with a ground level concrete slab with an array of anchor points. 44
Enerpac climbing jacks were utilised, with each stack standing at 1.2 metres. The stacks were topped by 500mm of climbing jack frames, each holding Enerpac 250T jacks. The entire jack-down process was operated by two Enerpac EVO power packs, each operating 24 jacks on 12 hydraulic lines with a power requirement of only 7.5kw. To avoid clashes with the module structure a bespoke design was created for the jacking frames.
“Our first task was to perform the load in operation of the compressor module via SPMT transfer, and then transporting it from the quayside to the prepared on-site foundations which involved 168 Axle lines of SPMTs and eight powerpacks,” says Tomasz Milewski, engineering manager at Alevro. Massimiliano Vettrici, operations manager at Alevro, led the execution of the overall operation.
“Testing the jack-down system was crucial in building confidence for the next stage of the compressor installation, where the Enerpac cylinders would bear the full weight of the compressor module,” he says. “Additionally, we paid particular attention to module alignment while on SPMTs, as we did not anticipate any movement during the lowering phase, given the numerous jacking points. “The load transfer from SPMTs to Climbing Jacks utilised the Enerpac EVO ‘tilting mode’ to align
the module with its behaviour onto the SPMTs hydraulic bed. The entire jack-down operation, using the Enerpac climbing jacks and EVO systems, went very smoothly. The successful installation of all compressor modules has now established the framework for future jack-downs.” Alevro’s methodology and creative execution was recently recognised at the Crane Industry
Council of Australia (CICA) Awards, with the jack-down operation awarded ‘Best Innovation’ by the CICA judges and taking out the People’s Choice for innovation.
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