2023 Fall Meeting

Presentation information

Oral presentation

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

[1A01-04] Radiolysis, Corrosion 1

Wed. Sep 6, 2023 2:45 PM - 3:50 PM Room A (IB Bildg.1F IB013)

Chair:Hiroshi Abe(Tohoku Univ.)

3:00 PM - 3:15 PM

[1A02] Effects of Oxygen Injection and Pt Deposition on Flow Accelerated Corrosion of Carbon Steel Piping

*Toshimasa Ohashi1, Hikari Murotani1, Yoichi Wada1, Ryosuke Shimizu2, Makoto Nagase2, Shinobu Okido2 (1. Hitachi, 2. HGNE)

Keywords:BWR, Carbon Steel, Flow Accelerated Corrosion, Oxygen Injection, Platinum, Clean Up Water System, Noble Metal Chemical Addition

Recently, reports of flow accelerated corrosion (FAC) of carbon steel (CS) piping in clean-up water system (CUW) are increasing at BWR plants in the U.S. Most of BWR plants in the U.S. have been operated with hydrogen injection (HWC) and Online NobleChem (OLNC) as a countermeasure against stress corrosion cracking. However, studies on the effects of noble metal on carbon steel corrosion are limited. We are investigating the effects of platinum deposition on CS corrosion and the FAC suppression effect of oxygen injection. In this presentation, we performed corrosion tests under simulated CUW conditions. Platinum deposition did not accelerate the FAC of CS under the condition without oxidants.

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