EVALUATION OF LONG TERM DEEP SEA EFFECTS ON MOORING LINE COMPONENTS

The interpretation of environmental deterioration that occurs in oceanographic buoy systems is discussed. These single point taut-moored systems are used for the placement of instruments for long term measurements of oceanographic and meteorological data. A number of moorings have been lost necessitating an analysis of all components in the mooring line. Systematic examination of retrieved components has indicated the presence of corrosion at all stages in the mooring from the surface buoy to the anchor. This includes the various instrument housings and attachments, the mooring line and its terminations, and the interconnecting hardware such as shackles, links and chain. Pitting type corrosion, crevice corrosion, galvanic incompatibility, have been identified and design changes made. (Author Modified Abstract)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/NR0833004
• Supplemental Notes:
  • Prepared in cooperation with Woods Hole Oceanographic Institute, Mass.
• Corporate Authors:

  Massachusetts Institute of Technology

  Charles Stark Draper Laboratory
  Cambridge, MA  United States  02139
• Authors:
  • Morey, R L
• Publication Date: 1973-2

Media Info

• Pagination: 82 p.

Subject/Index Terms

• TRT Terms: Cables; Corrosion; Electrochemistry; Failure analysis; Fatigue (Mechanics); Galvanic corrosion; Loads; Marine fouling; Mechanical failure; Microstructure; Mooring cables; Moorings; Offshore structures; Pitting; Stresses; Structural parts
• Uncontrolled Terms: Degradation
• Old TRIS Terms: Cable failure; Cables mechanical; Corrosion fatigue; Deep water; Galvanic reactions; Loading mechanics
• Subject Areas: Bridges and other structures; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00047626
• Record Type: Publication
• Source Agency: National Technical Information Service
• ISBN: NR-0833-004
• Report/Paper Numbers: E-2748
• Contract Numbers: N0004-66-C-0241
• Files: TRIS
• Created Date: Oct 18 1973 12:00AM