SERIES PRODUCTION OF LIQUEFIED NATURAL GAS CARRIERS

For construction of the LNG ships, General Dynamics' Quincy Shipbuilding Division in Quincy, Massachusetts was transformed from a conventional, labour-intensive shipyard into a modernised facility with mechanized steel process lines, level-surface building basins to accommodate hull erection from prefabricated structural modules of up to 150 tons, and a sphere-loading/bow erection basin served by a 1200-ton Goliath crane (see Figure 2). This modernisation programme has enabled the Quincy shipyard to achieve the production capacity required for series production. For construction of the cargo spheres, a completely new facility was built at Charleston, South Carolina (see Figure 3). This facility has been equipped with automatic welding equipment and uniquely-designed jigs and fixtures which permit simultaneous assembly of six 120-ft diameter cargo spheres. The Charleston facility, developed in parallel with the ship construction programme, currently produces one sphere every 3 1/2 weeks, in phase with the ship construction sequence at Quincy. These facilities represent the successful application of mechanized production techniques and advanced manufacturing technology to serialised production of LNG tankers. This paper discusses the development of General Dynamics' LNG series production concept and the manufacturing processes by which the concept was translated into cost-effective production solutions.

Media Info

  • Pagination: p. 215-225

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Filing Info

  • Accession Number: 00197170
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Aug 28 1979 12:00AM