Share

ISOLATING PIPELINES FOR MAKING SUBSEA JUNCTIONS.

Author(s) : CROOK J.

Type of article: Periodical article

Summary

THE ARTICLE DESCRIBES METHODS OF SEALING PIPES ON THE SEABED BY FREEZING PLUGS OF WATER USING A SECONDARY REFRIGERANT SUPPLIED FROM A SUPPORT VESSEL. THE PIPE WALL TEMPERATURE IS REDUCED TO -50 DEG C FOLLOWING TRIALS IN TEST TANKS WITH A SEA WATER TEMPERATURE OF 15 DEG C. FREEZING THE PIPE WITH LIQUID NITROGEN WAS NOT ENTIRELY SUCCESSFUL DUE TO DIFFICULTIES IN FEEDING REFRIGERANT TO THE WORK SITE. A HEAT FLUX MONITORING SYSTEM IS USED TO MONITOR THE PROGRESS OF THE FREEZING FRONT. G.R.S.

Details

  • Original title: ISOLATING PIPELINES FOR MAKING SUBSEA JUNCTIONS.
  • Record ID : 1992-1930
  • Languages: English
  • Source: MER - 1991.12; 60-61.
  • Publication date: 1991
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing