Ship hull corrosion caused by default and lack of ...（船体腐蚀引起的违约和缺乏u2026）.pdfVIP

IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 Vol. 04, Issue 02 (February. 2014), ||V2|| PP 34-39 Ship hull corrosion caused by default and lack of maintenance on the impressed current cathodic protection 1 2 Fernando B. Mainier , Vitor Perassolli 1Escola de Engenharia, Universidade Federal Fluminense, Niterói, RJ, Brazil, 2Posgraduação em Engenharia Civil, Escola de Engenharia, Universidade Federal Fluminense, Niterói, RJ, Brazil, Abstract: - This article presents a case study of corrosion of a ship hull that began after continuous failure of the impressed current cathodic protection system. The purpose of this article is not to question or criticise the design, installation, maintenance, or operation of the cathodic protection system, but only to show through the inspection carried out that the main aspects of the corrosive process that occurred when it was anchored for more than six months. In order to leave the ship in normal operating conditions, repairs were conducted that consisted of cleaning with pressurised water blasting, welding repair of corroded plates, paint application, and installation of zinc anodes in cathodic protection replacement. Keywords: - Cathodic protection, corrosion,failure, ship hull, zinc anode I. INTRODUCTION The study of corrosion and anti-corrosion protection technique development began in the 19th century and continues to this day. However, corrosion and corrosion protection are known to be associated with a range of discipline