An evolution of molten core cooling strategies

Fundamental mechanisms behind the molten core cooling strategies are revisited to provide an insight for a proper implementation of severe accident management guideline (SAMG) and a development of an engineered safety feature. From the results of a qualitative evaluation and a quantitative plant analysis, weak points of the current severe accident management guideline for an operating plant are identified and a revision of the molten core cooling strategies is proposed. In addition, technical issues for various kinds of core catcher concepts are discussed.