CORROSION IN THE CANADIAN ARCTIC: M.V. 'ARCTIC' - THE ULTIMATE CHALLENGE

The author describes corrosion problems on icebreakers in the Canadian Beaufort Sea and the installation of an Impressed Current Cathodic Protection (ICCP) system on Molikpaq, an octagonal drilling caisson designed to withstand all first year ice and multi year ice loads up to 120,000 tons. Many valuable lessons were learned from these projects, particularly with respect to the behaviour of the potentials on the hulls of moving structures in ice and stationary structures in and out of ice. The variation of hull potentials under different conditions showed what level of protection to provide in different situations. The suitability of different materials under different conditions was reviewed. This led to the design of a ICCP system for the icebreaker M.V. Arctic. Because of the unique design of this vessel, ie double skinned, it was possible to install anodes in the side tanks along the length of the ship to ensure optimum current distribution. Additional reference electrodes were also fitted to ensure that the whole hull was being protected under all conditions.

• 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 4 [6 p]
• Authors:
  • PETERS, D
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Corrosion
• Geographic Terms: Arctic Regions
• Old TRIS Terms: Arctic waters; Canmar kigoriak
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00718329
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 27 1996 12:00AM