2021 Annual Meeting

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Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 503-1 Reactor Chemistry, Radiation Chemistry, Corrosion, Water Chemistry,Water Quality Control

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

Fri. Mar 19, 2021 3:45 PM - 4:45 PM Room G (Zoom room 7)

Chair: Koji Negishi (TOSHIBA ESS)

4:00 PM - 4:15 PM

[3G13] The effects of hydrogen addition on the corrosive conditions of PWR primary coolant under irradiation

(2)Effects of oxide film and hydrogen on ECP

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

Keywords:Water radiolysis, Electrochemical corrosion potential, H2 addition, PWR

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 oxide film developed on the specimen surface and hydrogen on ECP are going to be discussed.