[3G12-14] Corrosion & Electrochemistry at High Temperature 2

[3G12] The effects of hydrogen addition on the corrosive conditions of PWR primary coolant under irradiation

(1)Effects radiation quality and pH on water radiolysis

*Kuniki Hata¹, Satoshi Hanawa¹, Yasuhiro Chimi¹, Shunsuke Uchida¹ (1. JAEA)

Keywords:Pressurized Water Reactor, Radiolysis, Hydrogen addition, Water chemistry, ECP

The results of ECP measurements in STUDSVIK INCA in-pile loop under PWR primary coolant conditions were analyzed with a water radiolysis code and a ECP analysis code, and then, major technical subjects for ECP analysis were pointed out to apply both codes for evaluating the corrosive conditions of PWR primary coolant. In the presentation. the effects of radiation quality and high temperature pH on concentrations of corrosive radiolytic species, e.g., H₂O₂, are going to be discussed.