Work

Flow, chloride, and pH effects on carbon steel corrosion in BWR cold shutdown: Development of a 4-STEP corrosion model

Year: 2025

Type: article

Abstract: The corrosion behavior of carbon steel in Boiling Water Reactor (BWR) plants during cold shutdown was investigated under flow velocities of 0.1 and 2.0 m/s, chloride ion (Cl - ) concentrations of 0.01, 0.1, 1, and 10 mg/L, and pH of 6.3, 7.6, and 8.5. Experiments over 800 h demonstrated that a high flow velocity (2.0 m/s) promotes rapid passivation , while a low flow velocity (0.1 m/s) results in sustained corrosion. Cl - damaged protective films, accelerating corrosion, particularly under high flow velocity. Higher pH and/or electric conductivity increased uniform corrosion . The newly developed 4-STEP corrosion model successfully reproduced the experimental results.

Source: Corrosion Science

DOI: 10.1016/j.corsci.2025.112960

Authors: Gaku Yamazaki, Kazutoshi Fujiwara

Institution: Central Research Institute of Electric Power Industry

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,070

OpenAlex ID: W4409726322

FWCI: 2.072

Cites: 54

Cited by: 10

Related to: 10