A 20 in. dia pipeline owned by Tennessee Gas Pipeline Co., damaged by a ship's anchor 50 mi off the Louisiana coast, was repaired in place with the aid of a newly developed hyperbaric submarine welding "hut". The repair was completed in 4 days in extremely rough seas by Taylor Diving & Salvage Co., Inc. The chamber is postioned and sealed around the pipe and then blown dry and pressurized with a special blend of gases, in which the diver-welders must wear life-support systems. Hyperbaric welding is superior to surface welding because the absence of oxygen prevents oxidation, the increased pressure reduces the possibility of porosity, and the controlled environment with no extraneous cooling reduces the chances of crystallization. The chamber is provided with gas-sensing systems, hydraulic systems, X-ray equipment, cryogenics, closed-circuit television, and facilities for handling pipe of any diameter. Further details on the repair operation are given.

  • Availability:
  • Corporate Authors:

    Petroleum Publishing Company

    211 South Cheyenne, P.O. Box 1260
    Tulsa, OK  United States  75221
  • Publication Date: 1968-11-11

Media Info

  • Pagination: p. 61
  • Serial:
    • Oil and Gas Journal
    • Volume: 66
    • Issue Number: 46
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00056032
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jun 24 1974 12:00AM