Concrete Platform Draugen3/16/2024 ![]() ![]() ![]() Nevertheless, this proved yet another offshore development where the design drawings were less than perfect – as had been the case in several projects off Norway during the 1980s. With such intimate collaboration, the job should have presented no problems. Since both design and construction were to be carried out by companies in the same family, the prospects for a positive outcome looked promising.Ĭomputers at the engineering and fabrication firms talked the same language, allowing them to communicate. This pair also put their names to the construction and outfitting assignment for the topsides when it was awarded to MRV in early 1990. Fotnote: Interview with project director Mahdi Hasan, 11 August 2018. Like MRV, this company was a member of the Kværner fabrication group.Ĭovering the drawings used in tendering for and building the topsides, this contract was signed by project director Mahdi Hasan for Shell and senior executive Hans Jørgen Frank for Kværner. The detail engineering job for the Draugen topsides had been awarded in 1989 to Kværner Engineering. They could easily be removed to let the barges in (figure 2). Similar blocks were also spaced along the edge of the support frame to distribute the topside weight and thereby avoid damage. These stood immediately beneath the quarters section, and were supplemented by smaller concrete blocks supported by steel tubes and positioned on the seabed to imitate the top of the monotower. To accommodate barges to float the completed topsides to nearby Vats for mating with the GBS, two of the four concrete cylinders had to be placed at the seaward edge of the structure. The answer proposed was a kind of both-one-thing-and-another solution. That presented a challenge which had to be overcome before assembly work could begin. In addition, the top of this monotower was larger than earlier points of contact and virtually square. However, the Draugen platform only had one shaft. Standing in the water alongside the dock, these pillars were intended to imitate the shafts of the GBS which the topsides would rest on – as with the Statfjord and Gullfaks structures. Fotnote: Statfjord industrial heritage – Building the Statfjord B topside Their quarters section was almost 23 metres tall and contained 130 berths.ĭuring earlier projects, the Rosenberg yard – part of the Moss Rosenberg Verft (MRV) company – had used four specially built concrete cylinders to support the topsides structure. The topsides were 79 metres long, 59 metres wide and 15 metres high (figure 1). That in turn proved appropriate for a concrete gravity base structure (GBS) with a single support shaft, since it would keep stability during towout within safety requirements. The topsides were originally intended for a floating production platform, which meant they were much lighter than a traditional complex used on a fixed installation. ![]()
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