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Report No.

Study on improvement of safety for accident conditions in spent fuel pool, 7; Investigation for a modeling of the cladding air oxidation

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

It is necessary to develop oxidation models of the cladding materials in air environment to improve the severe accident code for spent fuel pool (SFP) accident investigation. High temperature oxidation tests in the dry air on the zircaloy-2 cladding were conducted in different temperature and air flow rate to develop oxidation models. Oxidation tests on cladding tubes in a length of 500mm and computational fluid dynamics (CFD) analysis using the developed oxidation model were processed and the results were compared for the evaluation of the oxidation models. Outline of the whole project will be presented in the session as well.



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