Corrosion Problems in the Canadian Maritime Forces

摘要

The wastage of metals due to corrosion is one of the most serious engineering problems today and is of great economic concern. The Canadian Navy is very sensitive to the problems of corrosion and the importance of corrosion control not only because of the costs incurred but also because of the potential detrimental effects on the operational capabilities of the ships and the safety of the crew. Investigations of corrosion related failures that have taken place on Canadian naval ships are described. The investigations are divided into three categories: Machinery, Seawater Systems and General. The Machinery category includes examples of corrosion problems with desuperheater tubes, gas turbine engine fuel manifolds, and waste heat and auxiliary boilers. The Seawater Systems category describes the erosion corrosion of copper nickel pipes and pump impellers, and the crevice corrosion of a pump shaft. The General category includes corrosion problems with hulls and fasteners. All of the corrosion problems described can be eliminated or reduced a significant degree using modern corrosion control practices.