I. WHY MONITOR CORROSION Corrosion costs process industries approximately $300 billion per year in lost production, equipment failures, and fines for environmental and safety violations (Avery, 2008). The losses of money, time and equipment have made it important to study corrosion and look for ways to stop or control it. But because corrosion is a natural problem, it means we can't completely stop it from happening, but we can try to control it. This fact led to corrosion monitoring technology which, on the other hand, started to develop by adopting different approaches, considerations and ideas to control the corrosion problem. The author of the book "Corrosion for All", Groysman, A. implies that it is impossible to prevent corrosion of many metals because they are thermodynamically unstable in the environment. And then he suggested studying the materials to see how long the equipment or structure will function safely and efficiently under particular conditions. In other words, knowing the corrosion rate and type of corrosion helps predict the longevity of your equipment and help you evaluate when to make shutdowns, repairs, or replace equipment (2009). Another source defines the word corrosion as the breakdown of an engineered material due to chemical reactions with the surrounding environment and in the most common use of the word corrosion means electrochemical oxidation of metals in reaction with oxygen or in general with a oxidizing. The formation of an iron oxide due to oxidation is an example of corrosion and is commonly known as rust. In other words, corrosion is the wear and tear of metals due to a chemical reaction. So, to stop the wear and tear of engineered metals, some m...... middle of paper...... Prestressed concrete structures in new construction. Washington DC: Federal Highway Administration.Stears, C. D., Degerstedt, R. M., Moghissi, O. C., & Bone, L. (1998). Field program on the use of coupons to monitor the cathodic protection of an underground pipeline. Alaska: Material Performance.Tullmin, M. (2003). Corrosion monitoring and control: history. Retrieved April 4, 2010, from Corrosion Club: http://www.corrosion-club.com/historyhome.htmTullmin, M. (2003). Corrosion monitoring, what is it? Retrieved October 4, 2010, from Corrosion Club: http://www.corrosion-club.com/whatis.htmYang, L. (Ed.). (n.d.). Corrosion monitoring techniques. Retrieved March 18, 2010, from Woodhead Publishing: http://www.woodheadpublishing.com/en/book.aspx?bookID=1257Yang, L. (Ed.). (2008). Corrosion monitoring techniques. Cambridge, UK: Woodhead Publishing Ltd.