volume 14, issue 5, P1504 2021
DOI: 10.3390/en14051504
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Il Suk Lee, Dong Hyeog Yoon, Young Seok Bang, Tae Hoon Kim, Yong Chan Kim

Abstract: Concern over the asymmetric phenomena in the core region has increased considering safety issues that are highly possible to reduce the thermal margin significantly in nuclear power plants. Since the seized reactor coolant pump (RCP) accident of an advanced power reactor 1400 (APR1400) can be regarded as a representative core asymmetric event with respect to core inlet flow, the departure from nucleate boiling ratio (DNBR), which is a regulatory acceptance criterion in nuclear safety, should be evaluated with …

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