A Review on Ex-Vessel Melt Retention Measures Adopted in Light Water Reactors

被引：0

作者：

Yuan, Yidan ^{[1
]}

Huo, Xiaodong ^{[1
]}

Li, Wei ^{[1
]}

Guo, Qiang ^{[1
]}

Zhang, Li ^{[1
]}

Guo, Yong ^{[1
]}

Pei, Jie ^{[1
]}

机构：

[1] CNNC Key Laboratory for Severe Accident Research in Nuclear Power Safety, China Nuclear Power Engineering Co., Ltd., 117 West 3rd Ring Road, Beijing

来源：

Energies | 2024年 / 17卷 / 24期

关键词：

core catcher; ex-vessel melt retention; severe accident;

D O I：

10.3390/en17246220

中图分类号：

学科分类号：

摘要：

As the cornerstone of severe accident management strategy, either in-vessel or ex-vessel retention of core melt (IVR or EVR) plays a pivotal role in the stabilization and termination of a severe accident and ultimately secures the safety goal of “Practical elimination of large radioactive release” for light water reactors. In contrast to the IVR measures that are more or less identical in reactor designs, the EVR measures are quite different from design to design. This study intended to give a critical review on the EVR measures adopted in the reactor designs of VVER-1000, EPR, ESBWR, EU-APR1400 and APWR. The review study began with a general description of the existing EVR measures, including their principles, operational procedures and research efforts. We then focused our discussions on the pros and cons of each EVR measure through the comparisons with the IVR and with the others in terms of simplicity, reliability and economy. We finally tried to identify the remaining issues and uncertainties in the qualification of the EVR measures, based on which potential design improvements and future research needs were recommended. © 2024 by the authors.

引用

共 64 条

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