Evaluation of integrated system dynamic responses during a SWR event in KALIMER-600

A sodium-water reaction (SWR) has been considered as one of the most important issues to be resolved for designing the steam generator and the related systems of a sodium-cooled fast reactor (SFR). Since the system dynamic responses during the SWR event obviously show different characteristics between the initial stage of the acoustic wave propagations and the long-term period of a bulk motion, its analysis should also be performed for both major events in general. In this study, the whole stage of a SWR event in KALIMER-600 including the very initial propagation and the long-term mass and energy transfer were evaluated with considerations of the fundamental features of the SWR phenomena and the guidelines for the pressure relief system design against a SWR event are also proposed