The world's longest sulphur submarine pipeline is made of steel, extends 9 mi from the $25 million Caminada offshore mine of Freeport Sulphur Co. to a mainland base at Grand Isle, La., and is protected by a coating system consisting of a primer and Bitumastic high temperature enamel incorporated with a single ply of 15 lb coal tar-saturated pipeline felt. The 14 in. dia steel casing encloses a 7 in. dia urethane foam insulated line carrying the molten sulfur, inside of which a 2.5 in. dia pipe carries superheated water to keep the sulfur at a flow temperature. The same coating system was also used on two 5 in. dia water lines strapped on opposite sides of the casing.

  • Corporate Authors:

    Scientific Surveys Limited

    11A Gloucester Road
    London SW7,   England 
  • Publication Date: 1968-5

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Filing Info

  • Accession Number: 00056060
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jun 24 1974 12:00AM