According to Tommy Quik, project manager for Mammoet, due to the Mega Jack 800’s stroke-controlled system, no fixed connection to the modules would be required, allowing for a shorter execution window in the area, which is notorious for frequent and strong winds, and there is less need to add temporary steel to the modules for the integration operation.
For the seven-week operation, integration started with weighing of the MDSM module. This was then jacked up using the Mega Jack 800 so two modular jacking beams could be moved underneath it.
Next, the heavy skidding system, comprising six 800-t skid shoes and a skid track, was installed on top of the beams, with the entire combination subsequently positioned onto 120 axle lines of the SPMT, so it could be moved 100 m across the site from the fabrication location toward the platform.
The combination was then placed above the Mega Jack 800, pre-installed beside the platform, followed by jacking up to a height of 15 m, before the MDSM was skidded onto the platform.
An additional set of skidding equipment was employed to skid the module in a transverse direction toward its final position. The module was then transferred onto hydraulic jacks for final setdown. Once the operation was completed, the team repeated the process with the DES module.
Mammoet deployed its specialists from locations including the Netherlands, UK, Spain, UAE and Kazakhstan for the campaign.
The company also will support the project’s final stage next year, which will involve the jack-up and load-out of the complete PDQ platform (expected to weigh 20,750t, using the Mega Jack 5200 system.
