8 Legged Jacket & Piles
Early plans for development of the Scott Field were based upon installing a concrete gravity base structure (GBS) to support the Topsides facilities, with initial conceptual designs for such a solution being drawn up. After evaluation of this design approach however, proposals for steel Jacket structures were prepared, and after consideration a two Jacket arrangement was finally chosen by Amerada Hess as the preferred option. The drilling and production facilities were to be supported on an eight leg (JD) Jacket, and the Utilities and Accommodation supported on a four leg (JU) Jacket. Upon award of the Jacket contract the Yard entered into an EPCI (Engineering, Procurement Construction and Installation) contracting arrangement with Earl and Wright who were responsible for Engineering and Heerema who were responsible for offshore Installation.
Given the nature of the soils at the offshore platform site, the foundation piles for the Scott JD Jacket were the heaviest set to be fabricated at the Yard with each of the 20 No x 2.2 metre diameter Piles weighing 620 Tonnes each. Following completion and sail away of the Jacket in 1992 and subsequent offshore Jacket and Topsides installation the platform became operational in 1993.