Visual Corrosion Inspection, Evaluation, and Repair Procedure for Ship Tanks Navigating the Mediterranean Sea

Abstract

This study addresses the formidable issue of corrosion faced by shipping companies, particularly in the Mediterranean Sea. Following the Spanish Legislation Royal Decree 1837/2000, a thorough visual inspection of various ship tanks was conducted, employing an inspection code for surface condition and repair prioritization. The predicament confronting shipping companies revolves around the detrimental impact of corrosion on vessels, leading to economic costs and safety concerns. Tanks such as the fore-peak, sanitary tank, center tank (1A), and double bottom tanks were scrutinized. The fore-peak exhibited significant corrosion (30%), necessitating an urgent epoxy coating. The sanitary tank, initially estimated at 6-25% corrosion, was revised to approximately 10%, requiring a high-pressure wash and epoxy coating. The center tank (1A) displayed localized corrosion (15%), emphasizing the need for prioritized repair with epoxy coating. Double bottom tanks 1 PT and 1 SD manifested corrosion (5%) and blisters (35%), necessitating repairs involving high-pressure washing and epoxy coating. Other tanks, such as freshwater tanks, demonstrated varying degrees of corrosion and required extensive repairs. The findings underscore the importance of customized maintenance strategies based on environmental factors. This study provides valuable insights for shipping companies navigating corrosive marine environments, underscoring the significance of timely detection and targeted repairs.