Mammoet recently completed the first scope of work that will lead to the construction of the propane dehydrogenation and polypropylene (PDH/PP) blocks of its client’s industrial-scale chemical plant in Police, Northwest Poland. The project involved the lifting and transport of more than 480 items from a small port to the construction site six kilometers away. Mammoet was contracted by Polish company Grupa Azoty, one of the main players in the European fertilizer and chemical market.
Among the items transported by Mammoet, five were extremely large with a weight between 600-800t, and the largest was around 900t. The size of many of those items required the company to look for efficient and sometimes creative ways to get them from the port to their final location.
While six kilometers might not sound like a long distance in day-to-day terms, when it comes to transporting oversized and heavy items, it can feel like quite the journey. Especially the part of getting ready for it. From the very beginning, the transport supervisors executing the transport were involved in the project. They performed surveys and together with engineering drafted the plans on how the items were to be delivered to the site.
“We are happy to announce the completion of the first stage of our collaboration with Grupa Azoty Polyolefins,” says Jakub Walasek, Branch Manager for Mammoet Poland. “This is one of the biggest projects in Poland in recent years and we were entrusted to deliver some of the largest items ever moved on Polish roads.”
As a big part of the trip took place on public roads, it was crucial to make sure that all the permits were in place and the route was ready to take the large weight of the transport. In quite a few areas, it was necessary to make modifications. A RoRo ramp was built, bypasses were created, roads were widened, electrical wires were taken down and placed underground, and lamp posts were removed and later replaced with newer ones, which was eventually “a nice improvement for the local infrastructure”, Jakub says.
Yet, perhaps the biggest achievement of all was to build a bridge that could hold 650t of weight.
“As part of the route, we had to cross a 20-meter-wide channel and for that, we needed to build a bridge. Seeing that bridge complete was one of the highlights for me,” Jakub says. “There is a lot of preparation and precision that goes into a project like this and building a bridge is no small task.”
There were multiple items to be moved, and many of them came in different shapes and sizes. Mammoet used PST’s and conventional axle lines for the transport. The largest item, called the polypropylene splitter, required the use of two times double 16 axle lines PST’s in dolly configuration with turntables.