PICTURE OF THE WEEK: Collett Delivers 184Te Transformer to Corduff Substation, Dublin

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Heavy haulage experts, Collett & Sons have completed the delivery of an 184 Tonne transformer to Corduff Substation, North Dublin. The complex project was part of a collaborative effort with Wagenborg where Collett were responsible for the final leg of the project, encompassing the transportation of the transformer from Dublin Port to its ultimate destination at Corduff Substation.

Collett’s involvement in the project extended beyond the transportation itself and included critical tasks such as route surveys, transport logistics, offloading and final positioning. The transformer measured 9.3 metres in length, 3.6 metres in width, and 4.6 metres in height and had a total vehicle length of 65.4 metres when loaded.

To ensure a safe delivery, Collett’s Projects Department undertook preliminary work that encompassed a detailed route survey report. This meticulous process included a comprehensive swept path analysis report that analysed each turn along the route, guaranteeing the safe delivery of the oversized cargo. Additionally, a street furniture removal report was generated to identify and remove any obstacles or obstructions along the route. Collett also obtained the necessary permits for an alternative route, avoiding the motorway due to certain restrictions.

Prior to the transformer arriving at Dublin Port, Collett mobilised their 550 Tonne capacity girder frame trailer and heavy tractor units, which were transported from the UK to Ireland. Once the vessel arrived at Dublin Port from Rotterdam, Collett were responsible for navigating Wagenborg’s 22-axle trailer, loaded with the 184Te transformer, from the vessel to a designated transhipment area, where it was lowered onto stools using the trailer’s hydraulic suspension. Subsequently, Collett constructed the girder bridge trailer around the transformer in order to self-load the cargo. The transformer was then transported to a storage area, where it awaited its final delivery.

The delivery itself took place during nighttime movements, strategically planned to traverse through Dublin City Centre. Covering a 13.4-mile distance, the journey had a duration of four hours, with a maximum vehicle speed of 5 miles per hour. Police escorts and Collett’s in-house pilot cars accompanied the 65.4-metre-long load to the substation site.

Upon reaching Corduff Substation, Collett was challenged with navigating the site. To accommodate overhanging cables, the trailer’s suspension was lowered, allowing it to pass safely under the cables. Once alongside the bund area, the transformer was self-offloaded onto the skid track and skated 16 metres onto the final plinth. Hydraulic jacks were then employed to lower the transformer onto the plinth, where it was moved into its final position using specialised positioning plates. This extraordinary feat of engineering and logistics highlighted Collett & Sons’ expertise in handling oversized and intricate cargo deliveries.