Misplaced Pages

#248751

7-567: A 600-kilotonne gravity base structure (GBS) built after the Ocean Ranger disaster, it sits in 80 metres (44 fathoms) of water directly on the floor of the North Atlantic Ocean 315 kilometres (196 mi) off St. John's, Newfoundland at 46°45′1.57″N 48°46′58.54″W  /  46.7504361°N 48.7829278°W  / 46.7504361; -48.7829278 . This GBS is designed to resist iceberg forces and supports

14-447: A topsides weighing 39,000 tonnes at towout, increasing to 58,000 tonnes in operation. There were significant challenges faced by the engineering firms Doris Development Canada, Morrison Hershfield and Mobil Technology in developing a structural solution with adequate strength which was also constructible. In addition, unusual design situations resulted from the construction methods and the structural components used. The majority of

21-605: The construction was performed at a site in Bull Arm, Trinity Bay, Newfoundland and Labrador. A new community housing 3,500 workers was constructed, with its own cafeteria, gym and entertainment facilities. Many of the topsides modules were constructed locally, with some sourced internationally. The 550,000-ton slipform concrete GBS was built inside a drydock and mated with the topsides in the nearby deepwater construction site. Kiewit performed outfitting of equipment inside utility shafts and provided construction management services for

28-576: The gravity base structure. The assembled GBS was towed out on May 23, 1997, and installed in position on June 5. First oil was produced on November 17, 1997, four weeks ahead of schedule. Hibernia Gravity Base Structure Archived 2011-05-27 at the Wayback Machine This article about a building or structure in Newfoundland is a stub . You can help Misplaced Pages by expanding it . This article related to natural gas, petroleum or

35-425: The petroleum industry is a stub . You can help Misplaced Pages by expanding it . Gravity base structure A gravity-based structure ( GBS ) is a support structure held in place by gravity , most notably offshore oil platforms . These structures are often constructed in fjords due to their protected area and sufficient depth. Prior to deployment, a study of the seabed must be done to ensure it can withstand

42-548: The petroleum resources in the Gulf of Ob . Early deployments of offshore wind power turbines used these structures. As of 2010, 14 of the world's offshore wind farms had some of their turbines supported by gravity-based structures. The deepest registered offshore wind farm with gravity-based structures is the Blyth Offshore Wind Farm, UK, with a depth of approx. 40 m. This engineering-related article

49-399: The vertical load from the structure. It is then constructed with steel reinforced concrete into tanks or cells, some of which are used to control the buoyancy. When construction is complete, the structure is towed to its intended location. Notable GBSes include the 1997 Hibernia Gravity Base Structure off Newfoundland . Around 2020 GBSes became the fashion for Novatek 's exploitation of

#248751