Abstract
An analysis to the hydrogen behavior in the Qinshan Phase II Unit 1 containment was performed by using GASFLOW based on a realistic three dimension containment model. Three cases were taken into consideration, i.e. one case without recombiners and two cases with passive automatic recombiners (PARs) of different arrangement. Results from these three cases were compared, in order to study the effects of the recombiners and their arrangement on the hydrogen distribution and transportation. The difference of the flow field in all the cases was discussed. The characteristics of the hydrogen distribution in different cases were analyzed and the influence of recombiners was presented. The recombiner efficiency in two different arrangements was investigated and discussed.
