oa Civil Engineer in South Africa - Mossel Bay FA platform : installation of long vertical piles



The Mossgas FA gas and condensate platform is the first permanent offshore structure to be installed off the South African coast. Although the technology used for this platform was tested in such places as the North Sea, the lack of any field experience in South African waters posed particular problems for the offshore engineers involved. One such problem was that of installing the tubular piles, which are the longest vertical piles ever installed on an offshore platform. This vertical piled concept, which was chosen over an angled or battered system for cost reasons, required the development of a special installation procedure. This paper describes the development and successful implementation of this innovative procedure, with very significant cost savings, for the client Mossgas.


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