The author stressed that the risk of IGSCC (inter-granular stress corrosion cracking) in structure materials in BWR can be reduced by reducing the corrosion potential of the environment (ECP) below 230 mV. Two approaches suggested were:

(i) Addition of noble metal (e.g. Pt) followed by an excess H2 (0.20 - 0.40 ppm ) addition in the environment. These noble metals catalyze the reaction of H2 with O2 existing in the environment and thereby reduce the corrosion potential of the environment.

(ii) Second approach is to lower the ECP by coating the surface of the components by dielectric or insulating coating, e.g. TiO2 coating. Significant reduction in iron-oxide deposition on TiO2 coated (using CVD, around 1mm thick) 304 SS surface was observed in the laboratory.