An offshore ship-loading system being constructed as part of an LNG installation in Brunei consists of two parallel 18 in. OD stainless steel pipelines, each 2.6 mi long, preinsulated with approximately 6 in. of polyurethane foam, reinforced with two layers of glass-fiber matting within the foam and protected by a glass-reinforced epoxy vapor barrier. The foam is Isonate CPR 385-2.5, a fire-retardant, fluorocarbon-blown rigid urethane spray system formulated by Upjohn Co., CPR Division. The urethane insulation, as applied, should pose few maintenance problems. For those repairs that may be needed, operators can be trained on-site to apply the foam. Of the various possible alternatives, vacujm jacketing was rejected because it involves too highly sophisticated technology for both maintenance and installation. Cellular-glass insulation was ruled out for the same reason. In the future, there may be other LNG installations involving underwater pipelines; it may be possible, by use of urethane foam, to insulate pipes of up to 50 in. OD.

  • Availability:
  • Corporate Authors:

    Petroleum Publishing Company

    211 South Cheyenne, P.O. Box 1260
    Tulsa, OK  United States  75221
  • Publication Date: 1972-4-17

Media Info

  • Features: Photos;
  • Pagination: 2 p.
  • Serial:
    • Oil and Gas Journal
    • Volume: 70
    • Issue Number: 16
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00056201
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM