This paper highlights the importance of implementing a robust corrosion management program for copper-nickel tubes in seawater applications. Although these alloys are known for their natural resistance to seawater corrosion, failures can occur due to various factors such as inadequate corrosion management program and insufficient control of deposits accumulation and bacterial growth.

The investigation discussed in this paper focuses on the premature Microbiologically Influenced Corrosion (MIC) failure of copper-nickel tubes in a Trim-cooler equipment that operated for only seven (7) months. The findings suggest that the causal factors of the failure were related to the accumulation of deposits and the growth of bacteria in the seawater, which compromised the protective surface film on the tubes and accelerated the corrosion process.

To address this issue, the study recommends the implementation of an effective bacteria treatment and deposits filtration system to prevent the build-up of harmful materials in the seawater. This can be achieved through regular monitoring and cleaning of the equipment, as well as the use of adequate filtration and treatment technologies that are tailored to the specific needs of copper-nickel alloys in seawater applications.

Overall, this paper emphasizes the importance of a proactive approach to corrosion management in seawater applications, particularly when using copper-nickel alloys. By implementing the right corrosion control measures, it is possible to extend the service life of equipment, minimize downtime and maintenance costs, and ensure safe and reliable operations in harsh marine environments.