The paper deals with the several offshore floating units that have been installed in Campos basin, offshore Brazil, making use of polyester ropes in their mooring lines. A description is made of the technical specifications of these ropes, such as minimum breaking load, specific strength and dynamic modulus. A series of real-scale laboratory tests have been performed to obtain the approval and certification of the ropes. The paper describes the testing procedures adopted and discusses the results obtained. In sizing up the polyester installations, it has been observed that the loads on mooring lines reach levels somewhat lower than those obtained with traditional solutions (wire ropes and chain catenary systems). The paper points out and discusses this and other advantages that were observed when polyester ropes are employed. The paper highlights recommendations on how to handle the care for the polyester mooring lines, as well as the proper installations procedures to be followed. Finally, the paper points out some of the developments being sought to improve the performance of synthetic mooring structures while stressing the opportunities for new applications of man-made fiber ropes in the offshore industry.
Manmade fiber ropes in deepwater mooring applications
1999
9 Seiten, 16 Quellen
Conference paper
English
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