摘要
气载放射性物质源模型是核电厂安全审评中的关键点之一。但是,目前大多数安全分析报告中,针对气载放射性物质源模型均采用了一种通用的简化模型进行假设,而这种简化模型无法适用于所有类别的气载放射性物质源。本文根据物理机制详细地推导出核电厂安全壳、燃料贮存厂房和辅助厂房中三大类气载放射性物质源的计算模型,并分别给出了审核计算这三类模型的关键点。
Background： The calculation model of airborne radioactive source term in Nuclear Power Plants is one of the key points of safety review. However, in most safety analysis reports, a general simplified model of airborne radioactive source terms has been used, which is not applicable for all cases. Purpose： The aim is to complete the review calculations quickly and accurately. Methods： The model was based on the physical diffusion mechanism of radionuclides and their diffusion behavior in different spaces. Results： We proposed three models which could be respectively used for airborne radioactive source terms in reactor building, fuel element building and auxiliary building. Meanwhile, the key points in review of airborne radioactive source terms were put forward. Conclusion： Three models were proposed and their corresponding review key points will play a significant role in review calculations.
出处
《核技术》
CAS
CSCD
北大核心
2013年第12期67-71,共5页
Nuclear Techniques
基金
国家科技重大专项课题(2011ZX06002-010
2013ZX06002001)资助
关键词
核电厂
气载放射性
源项
模型
审核
Nuclear Power Plants, Airborne radioactive, Source terms, Model, Review
