Title
A field study of the effectiveness of sacrificial anodes in ballast tanks of merchant ships
Author
Faculty/Department
Faculty of Sciences. Physics
Faculty of Sciences. Bioscience Engineering
Publication type
article
Publication
Tokyo :Society of Naval Architects of Japan ,
Subject
Biology
Engineering sciences. Technology
Source (journal)
Journal of marine science and technology / Society of Naval Architects of Japan. - Tokyo
Volume/pages
19(2014) :1 , p. 116-123
ISSN
0948-4280
ISI
000332693300008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Sacrificial anodes have become a standard practice for the protection of ballast tanks of merchant vessels against corrosive damage. A well protected tank should extend the life span of a ship and consequently enhances its economic value. An in situ survey comprising more than 100 merchant vessels provided the opportunity to measure the impact of these anodes on the life expectancy of these vessels. Contrary to the general belief of these anodes beneficial effect, no significant difference was found in our observations in terms of corrosion occurrence between ship populations with and without sacrificial anodes, across all ship ages. This may be explained by the highly variable conditions and the complex geometry in a ballast tank severely impede optimal and straightforward installation of these anodes in these tanks. Also, poorly placed anodes in it may harm the integrity of the coating of the tank. We therefore plead for uniform and clear rules on anode installation and inspection.
E-info
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