Massive module loaded out for Aibel

By Niamh Marriott27 September 2021

Mammoet loaded out a main support frame (MSF) module in Thailand, weighing more than 16,000 tonnes in total, using 604 axle lines of self propelled modular transporter (SPMT) at the Aibel Thailand yard in Leam Chabang.

This module was the largest ever fabricated by Aibel Thailand

This module was the largest ever fabricated by Aibel Thailand and the largest to be loaded-out in Thailand using SPMT. The mega MSF module weighed approximately 14,500 tones, and 16,258 tonnes with grillage.

Mammoet used a global network of engineers with specialists from Thailand and Mammoet’s Global Offshore Services division, who were in charge of weighing the module. Mechanics and supervisors from Australia, Malaysia, Netherlands and Thailand covered the site move and load-out execution using the SPMT.

The 604 axle lines of SPMT and 21 power pack units (PPU) were sourced from multiple depots in Asia-Pacific, Africa and the Middle East.

It was a logistical challenge for the team to bring in such a significant number of SPMT axle lines from different locations due to Covid-19 restrictions, which complicated shipping schedules.

All equipment was mobilised on time and all trailers were assembled several weeks before the load-out took place.

Weighing and adjusting

On site, weighing of the MSF module was completed using Mammoet’s weighing system and once the load cells were removed, the SPMT was driven in position under the MSF module.

The mega MSF module has since been shipped to Norway

With the SPMT in position and the hydraulic and electronic systems connected, the module was lifted up from its fabrication supports using the hydraulic suspension of the SPMT.

The site move was a distance of about 700 metres to the load out quay. It was completed the day before the load out onto the vessel took place.

The following day, Mammoet, Aibel and the crew of the vessel worked to ensure load-out of the module went smoothly onto the ship. It took a few hours before the module was rolled onto the vessel and accurately aligned with the grillage.

Shimming and adjusting procedures were undertaken before the MSF module could be completely set down on the vessel. After this, the SPMT trailers were removed from underneath the module.

The mega MSF module has since been shipped to Norway and is now part of Equinor’s fifth platform for the Johan Sverdrup oil field. The oil field is expected to have a daily production capacity of up to 535,000 barrels by the end of 2021.

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