ShareISOLATING 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
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Indexing
- Themes: Civil engineering
- Keywords: Civil engineering; Liquid nitrogen; Duct; Freezing; Sea water
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