This publication presents the proceedings of a technical meeting on water chemistry and clad corrosion/deposition including fuel failures, which was held in Kiev, Ukraine, in 2010. The outcome of the meeting is a summary report which provides state of the art information on the corrosion of reactor material, including fuel cladding, the causes of corrosion product deposition and the means in use to minimise the deleterious effects from these processes. There were 22 participants from 15 countries who attended the meeting. Nineteen papers were presented in three technical sessions, covering operational experience, corrosion and oxidation and clad deposition and its consequences.