COATINGS OF WATER BALLAST TANKS OF LNG TANKERS

The efficiency of the protection against seawater corrosion of the sea water ballast tanks of ships and, in particular, of LNG tankers (but also of the new type of double hull VLCC) is recognized as a key factor which determines their life span. The parameters which determine a successful protection are: dry film thickness, stripe coats, surveys and good conditions during the application work. This paper shows how these parameters are "built" by the two traditional techniques of the treatment of water ballast tanks used by the shipyards ie at the prefabrication stage on panels or blocks, or in situ after the ship erection. The advantages and drawbacks regarding schedules and quality of these 2 techniques are discussed. Finally, the specification air conditioning, surface preparation and paint application process selected by a French shipyard are outlined.

• Supplemental Notes:
  • RINA Intl Conf on Marine Corrosion Prevention a Re-appraisal for the Next Decade; 11-12 Oct 1994; London, UK. Pprs. Publ by RINA, London, UK. Ppr 11 [12 p, 12 ref, 12 fig]
• Authors:
  • Ollivier, Y
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Ballast (Ships); Ballast tanks; Carriers; Container tanks; Corrosion; Liquefied gases; Liquefied natural gas; Protective coatings; Seawater
• Candidate Terms: Seawater corrosion
• Old TRIS Terms: Tank coatings
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00718334
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 27 1996 12:00AM