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Report No.

Study on improvement of safety for accident conditions in spent fuel pool, 13; Investigation of cladding oxidation model

Nemoto, Yoshiyuki  ; Kaji, Yoshiyuki  ; Ogawa, Chihiro*; Nakashima, Kazuo*; Kanazawa, Toru*; Tojo, Masayuki*

Concerning the severe accident analysis in spent fuel pools (SFPs), it is important to construct the high temperature oxidation model of the Zirconium claddings exposed in loss-of-coolant accident condition. In this study, an oxidation model of Zry2 in air environment was constructed by using these basic data. The constructed oxidation model was applied for simulation of oxidation tests using long cladding tubes of Zry2 in hypothetical SFP accident conditions. Reproducibility of the calculation was evaluated in comparison with the results of experiment to validate the oxidation model.



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