Electrochemical techniques provide a viable method for rapid prediction or evaluation of corrosion. Their applicability arises from the fact that most aqueous corrosion processes involving metals require the transfer of charge across the metal-solution interface. Electrochemical measurements in flowing solution can provide data on (a) the rate of general corrosion and the possibility of other forms of attack, (b) mechanism, (c) the characteristics hydrodynamic parameters, and (d) the composition of the solution by electroanalytically monitoring compositions or measuring red-ox potential, pH etc.4