Effect of Ni/Fe ratio and Ni concentration on crud deposition behavior on heated zircaloy-4 surface in simulated pwr primary water

Hirotaka Kawamura*, Masahiro Furuya

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Crud deposition on fuel cladding surface would become significant issue in Japanese PWRs, because the large amounts of crud deposition has led to an increase of the dose rate in the primary coolant system and become a root cause of axial offset anomalies (AOA). In order to clarify the contribution factors of the deposition, the effects of heat flux, Ni/Fe ratio and nickel concentration in the test solution on the crud deposition were investigated in a simulated Japanese PWR fuel cycle chemistry at 325°C under sub-cooled boiling and non-irradiated condition. From the test results, it was revealed that the crud layer composed of NiFe2O4 and NiO was formed on the fuel cladding. The amounts of deposited crud layer increased with increase of heat flux and Ni/Fe ratio in the test solution. Ni contents in the crud layer increased with increase of Ni concentration in the test solution.

本文言語English
ホスト出版物のタイトル14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
ページ1124-1135
ページ数12
出版ステータスPublished - 2009 12月 1
外部発表はい
イベント714th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009 - Virginia Beach, VA, United States
継続期間: 2009 8月 232009 8月 27

出版物シリーズ

名前14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
2

Conference

Conference714th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
国/地域United States
CityVirginia Beach, VA
Period09/8/2309/8/27

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学
  • 環境工学

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