Chemical dissolution tests and electrochemical tests were carried out on Alloy 600 specimens covered with synthetic deposit simulating the tube deposits in the steam generators at IndIao Point 2. The tests showed that the introduction of ETA and a moderate increase in pH gave rise to lower corrosion rates, but enhancement of hydrazine levels caused them to rise. In the case of brass, both types of tests showed that raisiig the pH caused the corrosion rates to increase, but the introduction of ETA led to mild decrease in these rates.