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Follow on Google News | Raising the Tension - Without the Stress - Tension Riser SystemsA UAE-based rig builder put Claxton’s flexibility to the test recently when it asked the company to provide modified riser tension systems for two new jackup drilling rigs at very short notice.
Robinson says, “We were asked to design and supply a tension system that could be installed on the drive deck beneath the drill floor without any serious structural changes to the rig to withstand the higher loads.” The system that Claxon devised uses four hydraulic jacks pushing upwards against one of the company’s proprietary slip-activated tension rings. This tension ring, which was of a larger diameter than usual and so required to be redesigned, was chosen over a positive-grip tension ring because of its ability to handle the asymmetrical loads that resulted from having to work within a prescribed jacking layout. Claxton received the initial enquiry in 2010 and engineers began to think about the design of the system. The firm order came some considerable time later, however, by which time the first system of the two was needed very quickly. Claxton carried out detailed design work and manufactured and delivered the first system, comprising tension cylinders, tension ring, (http://www.claxtonengineering.com/ “The project illustrates perfectly what Claxton is all about,” says Robinson. “MIS came to us with an enquiry that required not only a tailored engineering solution, (http://www.claxtonengineering.com/ Claxton is often asked to provide tailored and bespoke engineering solutions in response to their clients operating needs. These special projects often come about as a result of unforeseen challenges - Claxton's (http://www.claxtonengineering.com/ End
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