Corrosion and Plugging Behavior of Carbon Steel Pipes with Special Reference to Microbial Corrosion

Various feed water pipes which were used for supplying cooling water to turbines in hydroelectric power stations for three to twenty years showed severe plugging problems because of tuberculation. Beneath tubercles, locally corroded large pits were observed.Results of water and corrosion product analysis suggest that bacteria might be associated with the tuberculation. Qualitical analysis of the tuberculation suggests the preventive ways of plugging or corrosion penetration.