ALE jacks-up topside 14m and aids speedier load-out, Mexico

SECTOR:

Offshore

 

KEY BENEFITS:

Quick operations

Innovation

Reduced costs

Bespoke engineering

Reduced risk

 

PROJECT:

The time and cost efficiency of ALE’s Mega Jack system has been demonstrated while completing a 14m-high jack-up of a topside in Mexico. As the Mega Jack had its own starter beams, extensive time and cost savings were made as the client did not need to fabricate temporary beams.

For a cost-effective load-out onto the barge, the topside needed to be jacked-up over 10m so it could be placed on the a specially designed desk support frame (DSF) for the load-out. The Mega Jack was the most viable option as limited site space meant they needed to avoid any disruption to other site operations.

The topside, weighing over 13,000t, was jacked-up to 14m high in stages. Upon reaching the first jacking phase 5.5m high, the client could access the forklifts under the topside, which was a major advantage as they could continue operations and optimise the project schedule. Once at full height (14m), the DSF could then be installed underneath and jacked-down ready for the load-out.

For the jacking operation, ALE configured the Mega Jack with eight towers, each with 5,200t capacity. This provided the strength needed to lift such a heavy weight whilst evenly distributing the ground loading pressure.

Teun Van Gorp, Project Manager/Engineer for ALE who specialises in the Mega Jack system, said: “As the Mega Jack is much more efficient than other systems on the market, with quicker assembly and jacking speeds, it provided a smart solution that saved time and overall costs. The Mega Jack was also a safer option for us operating in a busy site, as its inherent contingencies reduced the overall ‘critical operation’ and no working at height or welding connections were required. By using a world-leading jacking structure such as this, the client saved money by not investing in fabrication, which also gave them the long-term competitive edge.”

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