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Kinetic study on liquid sodium-silica reaction for safety assessment of sodium-cooled fast reactor

Kikuchi, Shin ; Koga, Nobuyoshi*; Seino, Hiroshi; Ohno, Shuji

In this study, the kinetic behavior of the sodium (Na)-silica (SiO$$_{2}$$) reaction was investigated for an assessment method of reactivity/stability of siliceous concrete against the sodium-concrete reaction (SCR) by postulating a severe accidental condition in the sodium-cooled fast reactor (SFR). The reaction behavior was tracked using a differential scanning calorimetry (DSC) equipped with a videoscope for viewing the changes in the sample during the reaction. From detail kinetic analysis, it was revealed that the kinetic results determined from the kinetic data at the maximum reaction rate can be interpreted as is for the major reaction stage. In addition, the k value at a constant temperature calculated using the Arrhenius parameters determined by the simplified Kissinger method can be used for the reactivity/stability assessment of the siliceous concrete in view of the kinetics of the major reaction stage of the Na-SiO$$_{2}$$ reaction.

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Category:Thermodynamics

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