METHOD FOR CONTROLLING THE RATE OF CORROSION OF COOLANT LOOP EQUIPMENT IN NUCLEAR POWER PLANTS

A method for controlling the rate of corrosion of coolant loop equipment in nuclear power plants involves measuring the values of the electrochemical potential of the structural material of the heat transfer tubes (TOT) and the electrical conductivity of the steam generator blowdown water, measuring the values of the polarization resistance of the structural material of the condensate and feedwater system tubes and the electrical conductivity of the steam generator feedwater, and automatically averaging said parameters and comparing them with reference values. The values of the electrochemicalpotential and the electrical conductivity of the steam generator blowdown water are depicted in the form of points on a two-parameter nomogram having the coordinates "electrochemical potential-electrical conductivity of an H-cationized sample" of blowdown water, which is divided into separate zones A, B, D and F characterizing the different degrees of corrosiveness of the steam generator blowdownwater toward the material