Quantitative Evaluation of ECCS Capability during Refill-Reflood Phase for BWR LOCA

概要

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In this study, to evaluate the core cooling characteristics and water level transient more realistically during refill-reflood phase for a BWR LOCA, several separate effects tests have been carried out. Several correlations and physical models, based on this study, were utilized to develop a computer code SAFER03. The verification of SAFER03 by ROSA-III and FIST-ABWR tests showed that the SAFER03 predicted well the water level transient and the peak cladding temperature with some margin. This study enabled a realistic prediction of BWR emergency core cooling system performance during LOCA. This paper is a summary report on the study results.