A study was undertaken to determine causes and effects of corrosion processes in ballast tanks. The ballast tanks of 65 ships were visited and mud or slime samples were taken for subsequent laboratory analysis. Twenty ships were sampled while in dry- dock, 37 in port, and eight at sea. Before each entry, the atmosphere was tested for oxygen and toxic and flammable gases. For this study, a sample data sheet was produced to record all relevant information in a structured way. Ship ballast tanks can be divided into four types, including forepeak, after peak, double hull, and double bottom tanks. For each type, a schematic plan is included in the data sheet. Every tank was divided into a maximum of three levels, top, middle, and bottom. When more than three levels were present, the top and bottom level were considered separately while the intermediate levels were combined and regarded as one middle level. At each level, photos were taken of the forward, aft, top, bottom, starboard, and port sides of the tanks.
In situ study of ballast tank corrosion on ships-part 1
In-Situ-Studie der Ballasttank-Korrosion bei Schiffen - Teil I
Materials Performance ; 48 , 10 ; 48-51
2009
4 Seiten, 22 Quellen
Article (Journal)
English
A time-dependent corrosion wastage model for seawater ballast tank structures of ships
Tema Archive | 2004
|The Root Cause of Ballast Tank Corrosion Problems
British Library Conference Proceedings | 1995
|