An Improved Model for Assessing the Effectiveness of Hydrogen Water Chemistry in Boiling Water Reactors

摘要

For nearly two decades, hydrogen water chemistry (HWC) has been used as a remedial mea- sure to protect boiling water reactor (BWR) structural components against intergranular stress corrosion cracking (IGSCC). In this paper, computer modeling is used to evaluate the effectiveness of HWC for BWRs. The DEMACE computer code, equipped with an updated chemical reaction set, G values, and a Sherwood number, is adopted to predict the chemical species concentration and electrochemical corrosion Potential (ECP) responses to HWC in the primary heat transport circuit of a typical BWR.