Evaluation of Iodine Pressure in Oxide Fuel Pins under Irradiation

Kenji Konashi, Michio Yamawaki

研究成果: Article査読

抄録

This review summarizes the published theoretical and experimental studies of Csl radiolysis in an operating fuel pin. The calculation method, which has been developed based on gas kinetic theory, is effective for the evaluation of the radiation effect on iodine pressure. The iodine partial pressures, which were calculated by the above method, are high enough to cause FCCI in FBR fuel pins and SCC in LWR fuel rods. The literature data of experiments exhibit that the iodine is liberated through γ-radiolysis of solid Csl, and the Csl vapor irradiated by electron beam also produced high iodine pressures. It has been also confirmed that the radiation effect in gas phase is still significant even in the case of existence of Cs pressure, which causes decrease of the iodine pressure by recombination. This review concludes that the radiation effect is important for understanding the chemical behavior of iodine in operating fuel pins.

本文言語English
ページ(範囲)1-10
ページ数10
ジャーナルjournal of nuclear science and technology
29
1
DOI
出版ステータスPublished - 1992 1 1
外部発表はい

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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