From a corrosion point of view, seawater ballast tanks on steel ships are one of the most critical areas. Hence the following article deals mainly with the corrosion protection in these tanks. Specific corrosion problems and protections through coatings will be discussed with reference to a newly released, internationally valid standard for the corrosion protection of seawater ballast tanks on steel ships. The aim of the coating standard is to achieve a coating lifetime of 15 years in the seawater ballast tanks. The intention is that the lifetime shall be achieved by the definition of concrete requirements, limit values and control mechanisms during the construction phase. Accordingly, the coating standard indicates clearly defined limit values for he surface preparation concerning cleanliness, surface profile, salt level, dust grade, dry film thickness, etc. Precepts are also given with respect to the selection of an appropriate coating system, application methods and required pre-qualification tests of coating systems. Typical paint systems for ballast water tanks are epoxy based systems with a nominal dry film thickness of around 300 micrometer. The main coating is most commonly applied in two layers.
Improved ship's safety by corrosion protection?
Erhöhte Betriebssicherheit von Schiffen durch Korrosionsschutz?
2007
7 Seiten, 2 Bilder
Aufsatz (Konferenz)
Datenträger
Englisch
Korrosionsschutz , Schiffbau , Schiffstank , Meerwasser , internationale Normung , Schiffbaustahl , organischer Überzug , Epoxidharz , Lebensdauer , Oberflächenvorbehandlung , Schichtdicke , Laborversuch , Oberflächenprüfung , Inspektion , Dokumentation , Zertifizierung , Qualitätssicherung , Korrosionsgeschwindigkeit
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