UNDERWATER CONNECTION BY HYPERBARIC WELDING ON THE FRIGG TO SCOTLAND PIPELINE

The first underwater connection on the Frigg to Scotland pipeline was performed in July, 1975 in 380 ft of water, using the hyperbaric welding technique which consists of connecting by welding in a dry habitat two pipe sections laid by laybarges. In 1973, after reviewing the possible ways of connecting and repairing submarine pipelines, Total Oil Marine Ltd selected this technique. Since then a program of development was conducted with contractors and research organizations in order to apply this techniques to the particular conditions of the Frigg line up to the maximum depth of 550 ft. This first connection was carried out by Taylor Diving & Salvage and Brown & Root Offshore with the barge "Hugh W. Gordon". At least seven more connections are planned on the Frigg pipeline.

• Supplemental Notes:
  • Offshore Eur 75 Conference, Preprint, Aberdeen, Scotland, Sept 16-19, 1975.
• Corporate Authors:

  Spearhead Publications Limited

  Aberdeen, ZZ Scotland   
• Authors:
  • Lallier, L
• Publication Date: 1975

Media Info

• Pagination: 4 p.

Subject/Index Terms

• TRT Terms: Pipe; Underwater pipelines; Welding
• Old TRIS Terms: Hyperbaric welding; Pipe welding; Underwater welding
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00142329
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Pap OE-75 210 PrePrint
• Files: TRIS
• Created Date: Dec 15 1976 12:00AM