The electrochemical corrosion potential (ECP) of stainless steel (SS)
was measured under simulated boiling-water reactor (BWR) coolant circu
it conditions using a rotating cylinder electrode (RCE). Based upon th
ose measurements, an empirical model was developed to predict ECP of s
tructure materials in a BWR primary circuit as a function of hydrogen
(H-2), oxygen (O-2), and hydrogen peroxide (H2O2) concentrations in th
e reactor coolant and of the waterflow velocity. Results of ECP modeli
ng using the H-2, O-2, and H2O2 concentrations calculated by the radio
lysis model were compared to internal ECP data obtained in an operatin
g reactor.