Collett successfully transported a 234-tonne stator from Heysham Port to the Gretna Grid Stability Facility in Scotland, utilizing a 350-tonne capacity Scheuerle girder bridge trailer and a 16-axle self-propelled modular transporter (SPMT) for the final leg.
The project began when the stator, measuring 9.1m in length, 4.2m in width, and 3.9m in height, was unloaded from a coaster vessel at Heysham Port. Initially loaded onto a 12-row modular flattop trailer for temporary storage, the stator was later transferred onto a 24-axle girder bridge trailer to begin its 92-mile journey.
The convoy, escorted by Lancashire and Cumbria police, navigated complex road conditions, including a contraflow maneuver to bypass a weak bridge. The transport team conducted several strategic adjustments to ensure the stator’s safe passage, taking care around narrow roads and bridge structures.
Upon reaching Longtown, 88 miles into the journey, the stator was transferred onto temporary stools, and the girder bridge was demobilized. The 16-axle SPMT then self-loaded the stator, eliminating the need for a mobile crane. The final 4-mile stretch to the Gretna Grid Stability Facility was completed at a walking pace.
Collett’s pre-project planning included securing police permits, liaising with local councils, and conducting detailed route surveys. Structural assessments ensured that the historic bridges along the route could support the weight of the load.
Once at the facility, the stator was reconfigured to allow for a 90-degree turn and positioning inside the building. The successful completion of this project highlights Collett’s expertise in managing complex, high-value logistics projects, providing essential support for National Grid ESO’s efforts in enhancing grid stability through renewable energy integration.
