华龙一号公众辐射风险评价

摘要/Abstract

摘要： 福岛核事故后,核电厂公众辐射风险评价受到越来越多的关注。随着我国自主设计的三代核电技术华龙一号“走出去”,阿根廷原子能委员会等国外监管机构明确提出要对核电厂开展三级概率安全评价(PSA)分析,将公众辐射风险评价作为衡量安全的重要指标。本文利用自主开发的三级PSA分析程序PSAL3DPP V1.0,结合源项、人口、气象、地形等数据,对多个厂址事故条件下公众可能受照剂量及风险进行了计算。结果表明,华龙一号严重事故后公众辐射风险均低于10^-8/a,满足阿根廷、美国、英国等国际上主流的风险验收准则。本文为华龙一号后续安全审评及海外市场推广提供了技术支撑,同时为我国监管部门制定定量化风险验收准则提供了参考。

关键词: 三级PSA, 风险评价, 事故后果, 华龙一号

Abstract: After the Fukushima nuclear accident, more and more attention has been paid to the public radiation risk assessment of NPPs. With the “going out” initiative of China’s independently developed GEN-III technology HPR1000, Argentine Atomic Energy Commission and other foreign regulatory agencies have clearly requested to carry out level-3 PSA for NPPs. Public radiation risk assessment has been an important indicator to judge whether the plant safe or not. Combined with the level-2 PSA source terms, demographic, meteorological and topographic data, using the self-developed accident consequence assessment code based on the CALPUFF model, personnel exposure dose and radiation risk at different distances from the NPP site are quantitatively simulated. The results show that the public radiation risk after serious accidents is lower than 10^-8/a, which meets the relevant requirements of criteria in Argentina, the United States and the United Kingdom, etc. This paper provides technical support for the safety review of HPR1000 technology, and promotes the safe and effective global deployment of HPR1000. Meanwhile, suggestions have been made for regulatory authorities to formulate quantitative risk acceptance criteria.

Key words: level-3 PSA, risk assessment, accident consequence, HPR1000

中图分类号:

TL364

王梦溪, 刘新建, 蔺洪涛, 薛娜, 邱林, 赵博. 华龙一号公众辐射风险评价[J]. 辐射防护, 2024, 44(4): 374-382.

WANG Mengxi, LIU Xinjian, LIN Hongtao, XUE Na, QIU Lin, ZHAO Bo. Acceptability analysis of public radiotion risk for HPR1000[J]. RADIATION PROTECTION, 2024, 44(4): 374-382.

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