Abstract

It is known that internal microbiologically influenced corrosion (IMIC) is one of the main causes of natural gas pipeline failures. The peculiarity of pipeline IMIC was examined in this study through a critical evaluation that took into account the corrosive environment, biofilm development, mechanism, innovative research methodologies, and scientific gaps that need to be filled in future research efforts. A thin coating of water condensate that is present on the interior surface of the pipe wall causes the IMIC of gas pipelines to occur in corrosive situations. Gases like CO2 and H2S dissolve and cause corrosion. To protect the environment below the film from fluid movement and facilitate the growth of microorganisms, a biofilm forms. The biofilm is combined with corrosion products to harm the IMIC further due to a lack of aqueous solution. The confined nature of IMIC makes it difficult to monitor and define the bacterial activity beneath the biofilm. IMIC’s electron transfer process has remained a mystery since there isn’t enough solid proof to back up the suggested theories. In order to establish a mechanistic knowledge of IMIC and to effectively address the issue, novel research methods are recommended.