Mammoet completes large 2-year construction project in Nigeria

With the installation of a 1,240-tonne propylene bullet, Mammoet has completed a large-scale construction project at the Dangote Refinery and Petrochemical complex in Nigeria. For two years, over 100 Mammoet engineers were on-site to transport and install hundreds of components, the heaviest weighing 3,000 tonnes.

In total, Mammoet moved 239 items (almost 85,000 tonnes) from a dedicated jetty to the construction site and installed 154 plant components (68,415 tonnes), including a 3,000-tonne regenerator and a 2,000-tonne crude column. The regenerator is the heaviest item transported over a public road in Africa to date.

The components were sourced globally and shipped to a purpose-built quay in Lagos, from where Mammoet moved the items to the construction site. Prior to installation, the components were stored temporarily on freshly paved Enviro-Mat, which is Mammoet’s solution to improve soil conditions in order to withstand heavy loads. In this case, it was deployed to provide the main crane hard stands.

Prior to installation, the components were stored temporarily on freshly paved Enviro-Mat which improves soil conditions. (Photo: Mammoet)

Mammoet deployed conventional trailers, trucks, SPMT’s and a number of mobile and crawler cranes ranging in capacity from 250 to 1,600 tonnes. The contractor also brought two of its largest super heavy-lift ring cranes with lifting capacities up to 5,000 tonnes, the PTC 200 DS and PT 50.

Mammoet and its Nigerian partner, Northridge Engineering, supported the local community with local employment, training and encouraging local businesses to be part of the supply chain. 54 local employees worked on the project, covering a range of skills including SPMT operators, crane riggers and drivers. Mammoet also subcontracted work to 43 Nigerian businesses throughout its two years on-site.

The Dangote refinery will have a capacity of 650,000 barrels per day (bpd) and is located in the Lekki Free Zone near Lagos, Nigeria. It will be Africa’s biggest petroleum refinery and the world’s biggest single-train facility.

Author: Tobias Pieffers

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