Study on hydrogen stratification and erosion process in Chinese SMR containment under severe accident scenario

Study on hydrogen stratification and erosion process in Chinese SMR containment under severe accident scenario

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During postulated severe accident, large amount of hydrogen-vapor mixture will be released into the containment and inflammable gas mixture may form.Once the gas will be ignited, the generated pressure loads can jeopardize the integrity of the internal structures.As elliot pecan tree for sale the local accumulation of high content hydrogen related much to the stratification and erosion mechanism, it is therefore of interest whether a stratification of gas layers will form within small containment.In this study, a stratification/erosion experiment is performed and the criteria under which the steady stratification will be destroyed by steam jet discussed.

Then the simulation method is validated by the experimental data.At last, several severe accident scenarios socksmith santa cruz for Chinese SMR performed and one of them is adopted for containment hydrogen CFD analysis.It is shown that high content of hydrogen will form in the upper part of the containment, and clear gas stratification will form, such stratification will be enhanced due to the condensation effect of steel containment wall.