The dynamic test study on corrosivity of re-utilizing water in power plants has been carried out by using the electro-chemical testing method

and a comparison with the traditional test specimen method being made.Results show that the application of the electro-chemical measurement method can timely and directly reflect the corrosivity of re-utilizing water to the pipeline in practical system

and can objectively and actually evaluate the corrosivity of the re-utilizing water

having practical significance for guiding the anti-corrosive treatment of re-utilizing water in the fields;whereas in traditional test specimen method

the result measured is the total corrosion

and during the time of test

the surface condition of the used specimen is not in consistancy with that in the pipeline of practical system

thus

the test results obtained can't fully reflect the actual corrosivity of re-utilizing water in the said system.