2017 Annual Meeting

Presentation information

Oral presentation

IV. Nuclear Fuel Cycle and Nuclear Materials » 403-1 Reactor Chemistry, Radiation Chemistry, Corrosion, Water Chemistry,Water Quality Control

[2I01-04] Mitigation of corrosive environment/Dose rate reduction

Tue. Mar 28, 2017 9:30 AM - 10:35 AM Room I (16-304 Building No.16)

Chair: Yusa Muroya (Osaka Univ.)

9:30 AM - 9:45 AM

[2I01] ECPs behavior of various plant constituent materials in high purity water at middle and low temperature

*Masahiko Tachibana1, Kazushige Ishida1, Yoichi Wada1, Ryosuke Shimizu2, Nobuyuki Ota2 (1. Research & Development Group, 2. Hitachi-GE Nuclear Energy, Ltd.)

Keywords:Boiling water reactor, Electrochemical corrosion potential, Dissolved oxygen, Hydrogen peroxide, Stainless sttel, Ni-base alloy, Zirconium alloy, Carbon steel

Electrochemical corrosion potentials (ECPs) behavior of various plant constituent materials (Stainless steels, Ni-based alloys, Zirconium alloy, Carbon steel) were measured in high purity water at middle and low temperature. Those were obtained in both the H2O2 condition or the O2 condition in order to improve ECPs knowledge at the temperature range of from 30 to 180℃. It was found that the ECPs in both O2 condition and H2O2 condition remained at high value even at deaerated condition compared with the ECPs measured at rated temperature of BWR.