**6. Conclusions**

This paper deals with a narrative literature review on AC corrosion assessment, protection criteria and corrosion mechanisms for buried carbon steel structures in CP condition. Main conclusions can be summarized as follows:


**Author Contributions:** A.B. conceptualized and prepared the manuscript; M.O. and S.B. contributed to literature analysis and to the organization of the manuscript. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Conflicts of Interest:** The authors declare no conflicts of interest.
